/* ===== CGArtLab Design System v1.0 — Tokens & Styles ===== */

:root {
  --ds-color-bg: oklch(97% 0.012 80);
  --ds-color-surface: oklch(99% 0.005 80);
  --ds-color-surface-raised: oklch(100% 0 0);
  --ds-color-surface-overlay: oklch(97% 0.008 80);
  --ds-color-border-subtle: oklch(92% 0.012 80);
  --ds-color-border: oklch(89% 0.012 80);
  --ds-color-border-strong: oklch(82% 0.015 75);
  --ds-color-muted: oklch(48% 0.015 60);
  --ds-color-fg-subtle: oklch(35% 0.018 60);
  --ds-color-fg: oklch(20% 0.02 60);
  --ds-color-fg-strong: oklch(14% 0.025 60);
  --ds-color-fg-inverse: oklch(97% 0.005 80);
  --ds-color-white: oklch(100% 0 0);
  --ds-color-black: oklch(0% 0 0);
  --ds-color-olive-50: oklch(90% 0.025 115);
  --ds-color-olive-100: oklch(82% 0.035 115);
  --ds-color-olive-200: oklch(72% 0.05 115);
  --ds-color-olive-300: oklch(62% 0.065 115);
  --ds-color-olive-400: oklch(52% 0.08 115);
  --ds-color-olive-500: oklch(45% 0.085 115);
  --ds-color-olive-600: oklch(38% 0.08 115);
  --ds-color-olive-700: oklch(30% 0.07 115);
  --ds-color-olive-800: oklch(22% 0.055 115);
  --ds-color-olive-900: oklch(15% 0.04 115);
  --ds-accent: var(--ds-color-olive-400);
  --ds-accent-hover: var(--ds-color-olive-500);
  --ds-accent-soft: var(--ds-color-olive-100);
  --ds-accent-muted: var(--ds-color-olive-50);
  --ds-color-success: oklch(55% 0.1 145);
  --ds-color-success-bg: oklch(93% 0.025 145);
  --ds-color-warning: oklch(65% 0.1 85);
  --ds-color-warning-bg: oklch(95% 0.025 85);
  --ds-color-error: oklch(50% 0.14 30);
  --ds-color-error-bg: oklch(93% 0.025 30);
  --ds-color-info: oklch(55% 0.08 240);
  --ds-color-info-bg: oklch(93% 0.02 240);
  --ds-font-display: "Iowan Old Style", "Charter", Georgia, "Noto Serif SC", "Source Han Serif SC", serif;
  --ds-font-body: "Noto Sans SC", "Source Han Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --ds-font-mono: "JetBrains Mono", "IBM Plex Mono", "Noto Sans Mono SC", ui-monospace, monospace;
  --ds-font-ui: "Noto Sans SC", "Source Han Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --ds-letter-spacing-cjk: 0.04em;
  --ds-letter-spacing-cjk-heading: 0.06em;
  --ds-letter-spacing-latin: 0.015em;
  --ds-letter-spacing-mono: 0;
  --ds-word-spacing-cjk: 0.05em;
  --ds-cjk-line-height: 1.7;
  --ds-text-caption: 0.75rem;
  --ds-text-body-sm: 0.875rem;
  --ds-text-body: 1rem;
  --ds-text-body-lg: 1.125rem;
  --ds-text-lead: 1.25rem;
  --ds-text-h5: 1.25rem;
  --ds-text-h4: 1.5rem;
  --ds-text-h3: 1.875rem;
  --ds-text-h2: 2.25rem;
  --ds-text-h1: 3rem;
  --ds-text-display: 3.75rem;
  --ds-text-hero: 4.5rem;
  --ds-weight-light: 300;
  --ds-weight-regular: 400;
  --ds-weight-medium: 500;
  --ds-weight-semibold: 600;
  --ds-weight-bold: 700;
  --ds-leading-tight: 1.1;
  --ds-leading-snug: 1.25;
  --ds-leading-body: 1.55;
  --ds-leading-relaxed: 1.7;
  --ds-leading-loose: 2;
  --ds-tracking-tight: -0.01em;
  --ds-tracking-normal: 0.02em;
  --ds-tracking-wide: 0.04em;
  --ds-tracking-wider: 0.08em;
  --ds-tracking-widest: 0.12em;
  --ds-tracking-mono: 0;
  --ds-tracking-cjk-body: 0.03em;
  --ds-tracking-cjk-heading: 0.06em;
  --ds-space-0: 0;
  --ds-space-1: 0.25rem;
  --ds-space-2: 0.5rem;
  --ds-space-3: 0.75rem;
  --ds-space-4: 1rem;
  --ds-space-5: 1.25rem;
  --ds-space-6: 1.5rem;
  --ds-space-7: 1.75rem;
  --ds-space-8: 2rem;
  --ds-space-9: 2.25rem;
  --ds-space-10: 2.5rem;
  --ds-space-11: 2.75rem;
  --ds-space-12: 3rem;
  --ds-space-14: 3.5rem;
  --ds-space-16: 4rem;
  --ds-space-18: 4.5rem;
  --ds-space-20: 5rem;
  --ds-space-24: 6rem;
  --ds-space-28: 7rem;
  --ds-space-32: 8rem;
  --ds-radius-none: 0;
  --ds-radius-sm: 2px;
  --ds-radius-md: 4px;
  --ds-radius-lg: 8px;
  --ds-radius-xl: 12px;
  --ds-radius-2xl: 16px;
  --ds-radius-full: 9999px;
  --ds-shadow-xs: 0 1px 2px oklch(0% 0 0 / 4%);
  --ds-shadow-sm: 0 1px 3px oklch(0% 0 0 / 6%), 0 1px 2px oklch(0% 0 0 / 4%);
  --ds-shadow-md: 0 4px 6px oklch(0% 0 0 / 6%), 0 2px 4px oklch(0% 0 0 / 4%);
  --ds-shadow-lg: 0 10px 15px oklch(0% 0 0 / 8%), 0 4px 6px oklch(0% 0 0 / 4%);
  --ds-shadow-xl: 0 20px 25px oklch(0% 0 0 / 10%), 0 8px 10px oklch(0% 0 0 / 6%);
  --ds-shadow-2xl: 0 25px 50px oklch(0% 0 0 / 12%);
  --ds-shadow-inner: inset 0 2px 4px oklch(0% 0 0 / 4%);
  --ds-duration-50: 50ms;
  --ds-duration-100: 100ms;
  --ds-duration-150: 150ms;
  --ds-duration-200: 200ms;
  --ds-duration-300: 300ms;
  --ds-duration-500: 500ms;
  --ds-duration-700: 700ms;
  --ds-duration-1000: 1000ms;
  --ds-ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ds-ease-in: cubic-bezier(0.4, 0, 1, 1);
  --ds-ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --ds-ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ds-bp-sm: 640px;
  --ds-bp-md: 768px;
  --ds-bp-lg: 1024px;
  --ds-bp-xl: 1280px;
  --ds-bp-2xl: 1536px;
  --ds-z-base: 0;
  --ds-z-above: 1;
  --ds-z-dropdown: 100;
  --ds-z-sticky: 200;
  --ds-z-overlay: 300;
  --ds-z-modal: 400;
  --ds-z-toast: 500;
  /* ===== Overlay & Glass ===== */
  --ds-color-overlay: oklch(0% 0 0 / 0.4);
  --ds-color-overlay-light: oklch(0% 0 0 / 0.12);
  --ds-glass-bg: oklch(97% 0.012 80 / 0.55);
  --ds-glass-border: oklch(89% 0.012 80 / 0.25);
  --ds-glass-shadow: 0 4px 24px oklch(0% 0 0 / 0.06);
  --ds-blur-sm: 4px;
  --ds-blur-md: 12px;
  --ds-blur-lg: 24px;
  --ds-blur-xl: 48px;
}

/* ===== Dark mode ===== */
[data-theme="dark"] {
  --ds-color-bg: oklch(15% 0.008 75);
  --ds-color-surface: oklch(19% 0.008 75);
  --ds-color-surface-raised: oklch(23% 0.01 75);
  --ds-color-surface-overlay: oklch(21% 0.008 75);
  --ds-color-border-subtle: oklch(27% 0.01 72);
  --ds-color-border: oklch(31% 0.012 72);
  --ds-color-border-strong: oklch(38% 0.015 72);
  --ds-color-muted: oklch(60% 0.012 70);
  --ds-color-fg-subtle: oklch(70% 0.01 70);
  --ds-color-fg: oklch(84% 0.008 72);
  --ds-color-fg-strong: oklch(92% 0.005 75);
  --ds-color-fg-inverse: oklch(15% 0.008 75);
  --ds-color-white: oklch(100% 0 0);
  --ds-color-black: oklch(0% 0 0);
  --ds-color-olive-50: oklch(22% 0.02 115);
  --ds-color-olive-100: oklch(27% 0.025 115);
  --ds-color-olive-200: oklch(35% 0.035 115);
  --ds-color-olive-300: oklch(45% 0.05 115);
  --ds-color-olive-400: oklch(57% 0.065 115);
  --ds-color-olive-500: oklch(64% 0.065 115);
  --ds-color-olive-600: oklch(71% 0.06 115);
  --ds-color-olive-700: oklch(79% 0.05 115);
  --ds-color-olive-800: oklch(87% 0.035 115);
  --ds-color-olive-900: oklch(94% 0.02 115);
  --ds-accent: var(--ds-color-olive-400);
  --ds-accent-hover: var(--ds-color-olive-500);
  --ds-accent-soft: var(--ds-color-olive-200);
  --ds-accent-muted: var(--ds-color-olive-100);
  --ds-color-success: oklch(60% 0.09 145);
  --ds-color-success-bg: oklch(22% 0.03 145);
  --ds-color-warning: oklch(72% 0.09 85);
  --ds-color-warning-bg: oklch(24% 0.03 85);
  --ds-color-error: oklch(55% 0.12 30);
  --ds-color-error-bg: oklch(22% 0.03 30);
  --ds-color-info: oklch(60% 0.07 240);
  --ds-color-info-bg: oklch(22% 0.025 240);
  --ds-shadow-xs: 0 1px 2px oklch(0% 0 0 / 30%);
  --ds-shadow-sm: 0 1px 3px oklch(0% 0 0 / 35%), 0 1px 2px oklch(0% 0 0 / 25%);
  --ds-shadow-md: 0 4px 6px oklch(0% 0 0 / 35%), 0 2px 4px oklch(0% 0 0 / 25%);
  --ds-shadow-lg: 0 10px 15px oklch(0% 0 0 / 40%), 0 4px 6px oklch(0% 0 0 / 25%);
  --ds-shadow-xl: 0 20px 25px oklch(0% 0 0 / 40%), 0 8px 10px oklch(0% 0 0 / 25%);
  --ds-shadow-2xl: 0 25px 50px oklch(0% 0 0 / 50%);
  --ds-shadow-inner: inset 0 2px 4px oklch(0% 0 0 / 25%);
  --ds-glass-bg: oklch(15% 0.008 75 / 0.55);
  --ds-glass-border: oklch(89% 0.012 80 / 0.08);
  --ds-glass-shadow: 0 4px 24px oklch(0% 0 0 / 0.25);
}

/* ===== Reset & Base ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px;scroll-behavior:smooth;scroll-padding-top:72px;-webkit-font-smoothing:antialiased;transition:background .4s,color .4s}
body{font-family:var(--ds-font-body);font-size:var(--ds-text-body);line-height:var(--ds-leading-body);letter-spacing:var(--ds-tracking-cjk-body);font-weight:var(--ds-weight-regular);color:var(--ds-color-fg);background:var(--ds-color-bg);transition:background .4s,color .4s}
/* CJK & mixed text optimizations */
body, p, li, .ds-wrapper, .ds-section-header p, .ds-component-label, .ds-form-label, .ds-timeline-content p, .ds-toast-text, .ds-navbar a{letter-spacing:var(--ds-tracking-cjk-body)}
h1, h2, h3, h4, h5, h6, .ds-h1, .ds-h2, .ds-h3, .ds-h4, .ds-h5, .ds-display, .ds-hero{letter-spacing:var(--ds-tracking-cjk-heading)}
.ds-caption, .ds-eyebrow, .ds-meta, .ds-toc-num{letter-spacing:var(--ds-tracking-wider)!important}
.ds-btn, .ds-input, .ds-form-input, .ds-form-textarea, .ds-label, .ds-badge, .ds-chip, .ds-toast-text{letter-spacing:var(--ds-tracking-normal)}

/* ===== Scrollbar ===== */
::-webkit-scrollbar{width:8px;height:8px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--ds-color-border);border-radius:var(--ds-radius-full);border:2px solid transparent;background-clip:content-box}
::-webkit-scrollbar-thumb:hover{background:var(--ds-color-border-strong);border:2px solid transparent;background-clip:content-box}
::-webkit-scrollbar-corner{background:transparent}
*{scrollbar-width:thin;scrollbar-color:var(--ds-color-border) transparent}

/* ===== Layout ===== */
.ds-wrapper{max-width:1200px;margin:0 auto;padding:0 var(--ds-space-6)}
.ds-display{font-family:var(--ds-font-display);font-weight:700;line-height:var(--ds-leading-tight);letter-spacing:var(--ds-tracking-tight);color:var(--ds-color-fg-strong)}
.ds-hero{font-size:var(--ds-text-hero)}.ds-h1{font-size:var(--ds-text-h1)}.ds-h2{font-size:var(--ds-text-h2)}.ds-h3{font-size:var(--ds-text-h3)}.ds-h4{font-size:var(--ds-text-h4)}
.ds-caption{font-size:var(--ds-text-caption);text-transform:uppercase;letter-spacing:var(--ds-tracking-wider);font-weight:600;color:var(--ds-color-muted)}
.ds-serif{font-family:var(--ds-font-display)}.ds-mono{font-family:var(--ds-font-mono)}
.ds-mt-12{margin-top:var(--ds-space-12)}.ds-mt-20{margin-top:var(--ds-space-20)}
.ds-mb-6{margin-bottom:var(--ds-space-6)}.ds-mb-8{margin-bottom:var(--ds-space-8)}.ds-mb-12{margin-bottom:var(--ds-space-12)}.ds-mb-16{margin-bottom:var(--ds-space-16)}
.ds-flex-row{display:flex;flex-wrap:wrap;gap:var(--ds-space-4);align-items:center}
.ds-grid-4{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:var(--ds-space-6)}
.ds-grid-6{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:var(--ds-space-4)}
.ds-grid-icons{display:grid;grid-template-columns:repeat(auto-fill,minmax(72px,1fr));gap:var(--ds-space-2)}
.ds-section{padding:var(--ds-space-20) 0;border-bottom:1px solid var(--ds-color-border)}
.ds-section:last-of-type{border-bottom:none}
.ds-section-header{margin-bottom:var(--ds-space-12);max-width:600px}
.ds-section-header .ds-h2{margin-bottom:var(--ds-space-3)}
.ds-section-header p{color:var(--ds-color-muted);font-size:var(--ds-text-body-lg)}

/* ===== Color Swatches ===== */
.ds-swatch{display:flex;flex-direction:column;gap:var(--ds-space-2)}
.ds-swatch-color{height:72px;border-radius:var(--ds-radius-lg);border:1px solid var(--ds-color-border-subtle);transition:transform .2s;cursor:pointer}
.ds-swatch-color:hover{transform:scale(1.03)}
.ds-swatch-info{font-size:var(--ds-text-body-sm);line-height:var(--ds-leading-snug)}
.ds-swatch-name{font-weight:600;color:var(--ds-color-fg)}
.ds-swatch-value{color:var(--ds-color-muted);font-family:var(--ds-font-mono);font-size:var(--ds-text-caption)}

/* ===== Component Preview ===== */
.ds-component-preview{padding:var(--ds-space-8);background:var(--ds-color-surface);border-radius:var(--ds-radius-xl);border:1px solid var(--ds-color-border-subtle);display:flex;flex-wrap:wrap;gap:var(--ds-space-4);align-items:center}
.ds-component-label{font-family:var(--ds-font-mono);font-size:var(--ds-text-caption);font-weight:600;text-transform:uppercase;letter-spacing:var(--ds-tracking-wider);color:var(--ds-accent);margin-bottom:var(--ds-space-4)}
.ds-component-group{margin-bottom:var(--ds-space-12)}
.ds-component-group:last-child{margin-bottom:0}

/* ===== Button ===== */
.ds-btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--ds-space-2);font-family:var(--ds-font-ui);font-size:var(--ds-text-body-sm);font-weight:600;line-height:1;letter-spacing:var(--ds-tracking-wide);padding:.625rem 1.25rem;border-radius:var(--ds-radius-md);border:1px solid transparent;cursor:pointer;transition:all .15s;text-decoration:none;white-space:nowrap}
.ds-btn--primary{background:var(--ds-accent);color:var(--ds-color-white);border-color:var(--ds-accent)}
.ds-btn--primary:hover{background:var(--ds-accent-hover);border-color:var(--ds-accent-hover)}
.ds-btn--secondary{background:transparent;color:var(--ds-color-fg);border-color:var(--ds-color-border)}
.ds-btn--secondary:hover{border-color:var(--ds-color-fg-subtle);background:var(--ds-color-surface)}
.ds-btn--ghost{background:transparent;color:var(--ds-color-muted);border-color:transparent}
.ds-btn--ghost:hover{color:var(--ds-color-fg);background:var(--ds-color-surface-overlay)}
.ds-btn--sm{padding:.375rem .75rem;font-size:var(--ds-text-caption)}
.ds-btn--lg{padding:.75rem 1.75rem;font-size:var(--ds-text-body)}
.ds-btn:disabled{opacity:.4;cursor:not-allowed}

/* ===== Card ===== */
.ds-card{background:var(--ds-color-surface-raised);border:1px solid var(--ds-color-border);border-radius:var(--ds-radius-xl);padding:var(--ds-space-6);transition:box-shadow .2s}
.ds-card--hoverable:hover{box-shadow:var(--ds-shadow-md)}
.ds-card--flat{border:none;box-shadow:var(--ds-shadow-xs)}

/* ===== Type Scale Label ===== */
.ds-type-label{font-size:var(--ds-text-body-sm);font-weight:600;letter-spacing:var(--ds-tracking-wide);color:var(--ds-color-fg);}

/* ===== Badge ===== */
.ds-badge{display:inline-flex;align-items:center;gap:4px;font-family:var(--ds-font-ui);font-size:11px;font-weight:600;line-height:1;letter-spacing:.02em;text-transform:uppercase;padding:4px 8px;border-radius:var(--ds-radius-sm)}
.ds-badge--default{background:var(--ds-color-surface-overlay);color:var(--ds-color-muted)}
.ds-badge--accent{background:var(--ds-accent-soft);color:var(--ds-accent)}
.ds-badge--success{background:var(--ds-color-success-bg);color:var(--ds-color-success)}
.ds-badge--warning{background:var(--ds-color-warning-bg);color:var(--ds-color-warning)}
.ds-badge--error{background:var(--ds-color-error-bg);color:var(--ds-color-error)}

/* ===== Input ===== */
.ds-input{font-family:var(--ds-font-ui);font-size:var(--ds-text-body-sm);color:var(--ds-color-fg);padding:.625rem .875rem;background:var(--ds-color-surface-raised);border:1px solid var(--ds-color-border);border-radius:var(--ds-radius-md);outline:none;width:100%;max-width:320px;transition:border-color .15s}
.ds-input::placeholder{color:var(--ds-color-muted)}
.ds-input:focus{border-color:var(--ds-accent);box-shadow:0 0 0 2px var(--ds-accent-soft)}
.ds-input--error{border-color:var(--ds-color-error)}
.ds-input--error:focus{box-shadow:0 0 0 2px var(--ds-color-error-bg)}
.ds-label{display:block;font-size:var(--ds-text-body-sm);font-weight:600;margin-bottom:var(--ds-space-2);color:var(--ds-color-fg)}
.ds-hint{font-size:var(--ds-text-caption);color:var(--ds-color-muted);margin-top:var(--ds-space-1)}

/* ===== Select ===== */
.ds-select{font-family:var(--ds-font-ui);font-size:var(--ds-text-body-sm);color:var(--ds-color-fg);padding:.625rem 2rem .625rem .875rem;background:var(--ds-color-surface-raised);border:1px solid var(--ds-color-border);border-radius:var(--ds-radius-md);outline:none;width:100%;max-width:320px;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236b6b6b' stroke-width='2'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right .625rem center}
.ds-select:focus{border-color:var(--ds-accent);box-shadow:0 0 0 2px var(--ds-accent-soft)}

/* ===== Checkbox / Radio ===== */
.ds-checkbox,.ds-radio{display:inline-flex;align-items:center;gap:var(--ds-space-2);cursor:pointer;font-size:var(--ds-text-body-sm)}
.ds-checkbox input,.ds-radio input{width:18px;height:18px;accent-color:var(--ds-accent);cursor:pointer}

/* ===== Toggle ===== */
.ds-toggle{position:relative;display:inline-flex;align-items:center;gap:var(--ds-space-3);cursor:pointer}
.ds-toggle-track{width:36px;height:20px;background:var(--ds-color-border-strong);border-radius:var(--ds-radius-full);transition:background .2s;position:relative}
.ds-toggle input{display:none}
.ds-toggle input:checked+.ds-toggle-track{background:var(--ds-accent)}
.ds-toggle-thumb{position:absolute;top:2px;left:2px;width:16px;height:16px;background:white;border-radius:50%;transition:transform .2s}
.ds-toggle input:checked+.ds-toggle-track .ds-toggle-thumb{transform:translateX(16px)}

/* ===== Chip ===== */
.ds-chip{display:inline-flex;align-items:center;gap:var(--ds-space-1);font-size:var(--ds-text-body-sm);color:var(--ds-color-fg);padding:6px 12px;background:var(--ds-color-surface);border:1px solid var(--ds-color-border);border-radius:var(--ds-radius-full);transition:all .15s}
.ds-chip:hover{border-color:var(--ds-color-fg-subtle)}
.ds-chip--active{background:var(--ds-accent-soft);border-color:var(--ds-accent);color:var(--ds-accent)}
.ds-chip-remove{display:inline-flex;cursor:pointer;opacity:.5;margin-left:var(--ds-space-1)}
.ds-chip-remove:hover{opacity:1}

/* ===== Alert ===== */
.ds-alert{display:flex;gap:var(--ds-space-3);align-items:flex-start;padding:var(--ds-space-4);border-radius:var(--ds-radius-lg);font-size:var(--ds-text-body-sm);line-height:var(--ds-leading-snug);max-width:480px}
.ds-alert--info{background:var(--ds-color-info-bg);border-left:3px solid var(--ds-color-info)}
.ds-alert--success{background:var(--ds-color-success-bg);border-left:3px solid var(--ds-color-success)}
.ds-alert--warning{background:var(--ds-color-warning-bg);border-left:3px solid var(--ds-color-warning)}
.ds-alert--error{background:var(--ds-color-error-bg);border-left:3px solid var(--ds-color-error)}
.ds-alert-icon{flex-shrink:0;width:20px;height:20px}
.ds-alert-title{font-weight:600;margin-bottom:var(--ds-space-1)}

/* ===== Modal ===== */
.ds-modal{background:var(--ds-color-surface-raised);border-radius:var(--ds-radius-xl);padding:var(--ds-space-8);max-width:480px;width:90%;box-shadow:var(--ds-shadow-2xl)}
.ds-modal-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--ds-space-4)}
.ds-modal-close{background:none;border:none;cursor:pointer;color:var(--ds-color-muted);font-size:1.25rem;padding:var(--ds-space-1)}
.ds-modal-close:hover{color:var(--ds-color-fg)}
.ds-modal-body{margin-bottom:var(--ds-space-6);color:var(--ds-color-muted);font-size:var(--ds-text-body-sm)}
.ds-modal-footer{display:flex;gap:var(--ds-space-3);justify-content:flex-end}

/* ===== Tooltip ===== */
.ds-tooltip-demo{position:relative;display:inline-flex}
.ds-tooltip-bubble{position:absolute;bottom:calc(100% + 6px);left:50%;transform:translateX(-50%);background:var(--ds-color-fg-strong);color:var(--ds-color-fg-inverse);font-size:var(--ds-text-caption);padding:6px 10px;border-radius:var(--ds-radius-md);white-space:nowrap;pointer-events:none;font-family:var(--ds-font-ui)}
.ds-tooltip-bubble::after{content:"";position:absolute;top:100%;left:50%;transform:translateX(-50%);border:4px solid transparent;border-top-color:var(--ds-color-fg-strong)}

/* ===== Accordion ===== */
.ds-accordion{max-width:480px;border:1px solid var(--ds-color-border);border-radius:var(--ds-radius-lg);overflow:hidden}
.ds-accordion-item{border-bottom:1px solid var(--ds-color-border-subtle)}
.ds-accordion-item:last-child{border-bottom:none}
.ds-accordion-header{display:flex;justify-content:space-between;align-items:center;padding:var(--ds-space-4);cursor:pointer;font-weight:600;font-size:var(--ds-text-body-sm);transition:background .15s}
.ds-accordion-header:hover{background:var(--ds-color-surface-overlay)}
.ds-accordion-arrow{transition:transform .2s;color:var(--ds-color-muted)}
.ds-accordion-item.open .ds-accordion-arrow{transform:rotate(180deg)}
.ds-accordion-content{padding:0 var(--ds-space-4) var(--ds-space-4);font-size:var(--ds-text-body-sm);color:var(--ds-color-muted);display:none}
.ds-accordion-item.open .ds-accordion-content{display:block}

/* ===== Tabs ===== */
.ds-tabs{display:inline-flex;border-radius:var(--ds-radius-xl);background:var(--ds-color-surface);padding:3px;border:1px solid var(--ds-color-border-subtle);gap:2px}
.ds-tab{padding:var(--ds-space-2) var(--ds-space-5);font-size:var(--ds-text-body-sm);font-weight:500;color:var(--ds-color-muted);cursor:pointer;border:none;border-radius:var(--ds-radius-lg);background:transparent;transition:all .2s;font-family:var(--ds-font-ui);white-space:nowrap}
.ds-tab:hover{color:var(--ds-color-fg)}
.ds-tab--active{background:var(--ds-accent-soft);color:var(--ds-accent);font-weight:600}
.ds-tab-content{display:none;padding:var(--ds-space-4) 0;font-size:var(--ds-text-body-sm);color:var(--ds-color-muted)}
.ds-tab-content--active{display:block}

/* ===== Progress ===== */
.ds-progress{max-width:320px}
.ds-progress-bar{height:4px;background:var(--ds-color-border-subtle);border-radius:var(--ds-radius-full);overflow:hidden;margin-top:var(--ds-space-2)}
.ds-progress-fill{height:100%;background:var(--ds-accent);border-radius:var(--ds-radius-full);transition:width .5s}
.ds-progress-label{display:flex;justify-content:space-between;font-size:var(--ds-text-caption);color:var(--ds-color-muted)}

/* ===== Avatar ===== */
.ds-avatar{width:40px;height:40px;border-radius:var(--ds-radius-full);background:var(--ds-accent-soft);color:var(--ds-accent);display:inline-flex;align-items:center;justify-content:center;font-family:var(--ds-font-display);font-weight:700;font-size:var(--ds-text-body);overflow:hidden}
.ds-avatar--sm{width:28px;height:28px;font-size:var(--ds-text-caption)}
.ds-avatar--lg{width:56px;height:56px;font-size:var(--ds-text-h4)}

/* ===== Breadcrumb ===== */
.ds-breadcrumb{display:flex;align-items:center;gap:var(--ds-space-2);font-size:var(--ds-text-body-sm)}
.ds-breadcrumb a{color:var(--ds-color-muted);text-decoration:none}
.ds-breadcrumb a:hover{color:var(--ds-color-fg)}
.ds-breadcrumb-sep{color:var(--ds-color-border-strong)}
.ds-breadcrumb-current{color:var(--ds-color-fg);font-weight:600}

/* ===== Table ===== */
.ds-table-wrap{overflow-x:auto;max-width:100%}
.ds-table{width:100%;border-collapse:collapse;font-size:var(--ds-text-body-sm)}
.ds-table th{text-align:left;padding:var(--ds-space-3) var(--ds-space-4);font-weight:600;color:var(--ds-color-muted);text-transform:uppercase;font-size:var(--ds-text-caption);letter-spacing:var(--ds-tracking-wider);border-bottom:1px solid var(--ds-color-border)}
.ds-table td{padding:var(--ds-space-3) var(--ds-space-4);border-bottom:1px solid var(--ds-color-border-subtle)}
.ds-table tr:last-child td{border-bottom:none}
.ds-table tr:hover td{background:var(--ds-color-surface-overlay)}

/* ===== Pagination ===== */
.ds-pagination{display:flex;align-items:center;gap:var(--ds-space-1)}
.ds-page-btn{display:inline-flex;align-items:center;justify-content:center;min-width:32px;height:32px;padding:0 var(--ds-space-2);font-size:var(--ds-text-body-sm);font-family:var(--ds-font-ui);border:1px solid var(--ds-color-border);border-radius:var(--ds-radius-md);background:var(--ds-color-surface-raised);color:var(--ds-color-fg);cursor:pointer;transition:all .15s}
.ds-page-btn:hover{border-color:var(--ds-color-fg-subtle)}
.ds-page-btn--active{background:var(--ds-accent);color:white;border-color:var(--ds-accent)}
.ds-page-btn:disabled{opacity:.3;cursor:not-allowed}

/* ===== Nav ===== */
.ds-nav{max-width:240px}
.ds-nav-item{display:flex;align-items:center;gap:var(--ds-space-3);padding:var(--ds-space-2) var(--ds-space-3);border-radius:var(--ds-radius-md);font-size:var(--ds-text-body-sm);color:var(--ds-color-muted);text-decoration:none;transition:all .15s}
.ds-nav-item:hover{background:var(--ds-color-surface);color:var(--ds-color-fg)}
.ds-nav-item--active{background:var(--ds-accent-soft);color:var(--ds-accent);font-weight:600}
.ds-nav-icon{width:20px;height:20px;flex-shrink:0}
.ds-nav-section-label{font-size:var(--ds-text-caption);text-transform:uppercase;letter-spacing:var(--ds-tracking-wider);color:var(--ds-color-muted);padding:var(--ds-space-2) var(--ds-space-3);margin-top:var(--ds-space-4)}

/* ===== Icon Button ===== */
.ds-icon-btn{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:var(--ds-radius-md);border:1px solid var(--ds-color-border);background:var(--ds-color-surface-raised);color:var(--ds-color-muted);cursor:pointer;transition:all .15s}
.ds-icon-btn:hover{border-color:var(--ds-color-fg-subtle);color:var(--ds-color-fg)}

/* ===== Skeleton ===== */
.ds-skeleton{background:linear-gradient(90deg,var(--ds-color-border-subtle) 25%,var(--ds-color-surface) 50%,var(--ds-color-border-subtle) 75%);background-size:200% 100%;animation:ds-shimmer 1.5s infinite;border-radius:var(--ds-radius-md)}
@keyframes ds-shimmer{0%{background-position:200% 0}100%{background-position:-200% 0}}

/* ===== Dropdown ===== */
.ds-dropdown{border:1px solid var(--ds-color-border);border-radius:var(--ds-radius-lg);background:var(--ds-color-surface-raised);box-shadow:var(--ds-shadow-lg);padding:var(--ds-space-2);min-width:180px}
.ds-dropdown-item{display:flex;align-items:center;gap:var(--ds-space-3);padding:var(--ds-space-2) var(--ds-space-3);border-radius:var(--ds-radius-md);font-size:var(--ds-text-body-sm);color:var(--ds-color-fg);cursor:pointer;transition:background .1s}
.ds-dropdown-item:hover{background:var(--ds-color-surface-overlay)}
.ds-dropdown-divider{height:1px;background:var(--ds-color-border-subtle);margin:var(--ds-space-1) 0}

/* ===== Icon Grid ===== */
.ds-icon-box{display:flex;flex-direction:column;align-items:center;gap:4px;padding:var(--ds-space-2);border-radius:var(--ds-radius-lg);border:1px solid var(--ds-color-border-subtle);background:var(--ds-color-surface);transition:all .15s;cursor:pointer}
.ds-icon-box:hover{border-color:var(--ds-accent);background:var(--ds-accent-soft)}
.ds-icon-box svg{width:22px;height:22px;stroke:var(--ds-color-fg);fill:none;stroke-width:1.5}
.ds-icon-box span{font-size:10px;color:var(--ds-color-muted);text-align:center;max-width:64px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ===== Cover ===== */
.ds-cover{padding:var(--ds-space-32) 0 var(--ds-space-20);text-align:center;border-bottom:1px solid var(--ds-color-border)}
.ds-cover .ds-eyebrow{font-family:var(--ds-font-mono);font-size:var(--ds-text-caption);text-transform:uppercase;letter-spacing:var(--ds-tracking-widest);color:var(--ds-accent);margin-bottom:var(--ds-space-6)}
.ds-cover h1{font-family:var(--ds-font-display);font-size:var(--ds-text-hero);font-weight:700;line-height:var(--ds-leading-tight);letter-spacing:var(--ds-tracking-tight);color:var(--ds-color-fg-strong);max-width:800px;margin:0 auto var(--ds-space-6)}
.ds-cover .ds-subtitle{font-size:var(--ds-text-h4);color:var(--ds-color-muted);max-width:520px;margin:0 auto var(--ds-space-8);font-weight:300}
.ds-cover .ds-meta{font-size:var(--ds-text-body-sm);color:var(--ds-color-muted);font-family:var(--ds-font-mono)}

/* ===== TOC Grid ===== */
.ds-toc-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:var(--ds-space-6)}
.ds-toc-item{padding:var(--ds-space-4);border-radius:var(--ds-radius-lg);border:1px solid var(--ds-color-border-subtle);text-decoration:none;color:inherit;transition:all .2s;display:flex;flex-direction:column;gap:var(--ds-space-1)}
.ds-toc-item:hover{border-color:var(--ds-accent);background:var(--ds-accent-soft)}
.ds-toc-num{font-family:var(--ds-font-mono);font-size:var(--ds-text-caption);color:var(--ds-accent)}
.ds-toc-item h3{font-size:var(--ds-text-body);font-weight:600}
.ds-toc-item p{font-size:var(--ds-text-body-sm);color:var(--ds-color-muted)}
.ds-spacing-vis{display:flex;align-items:center;gap:var(--ds-space-3)}
.ds-spacing-block{background:var(--ds-accent-soft);border-radius:var(--ds-radius-sm);flex-shrink:0}
.ds-shadow-vis{width:120px;height:80px;background:var(--ds-color-surface-raised);border-radius:var(--ds-radius-lg);display:flex;align-items:center;justify-content:center;font-size:var(--ds-text-caption);color:var(--ds-color-muted)}
.ds-radius-vis{width:60px;height:60px;background:var(--ds-accent-soft);border:1px solid var(--ds-color-border);display:flex;align-items:center;justify-content:center;font-size:10px;color:var(--ds-accent);font-family:var(--ds-font-mono)}

/* ===== Footer ===== */
.ds-footer{padding:var(--ds-space-12) 0;text-align:center;border-top:1px solid var(--ds-color-border);color:var(--ds-color-muted);font-size:var(--ds-text-body-sm)}

/* ===== Token Table ===== */
.token-table{width:100%;border-collapse:collapse;font-size:var(--ds-text-body-sm)}
.token-table th{text-align:left;padding:var(--ds-space-2) var(--ds-space-3);font-weight:600;color:var(--ds-color-muted);text-transform:uppercase;font-size:var(--ds-text-caption);letter-spacing:var(--ds-tracking-wider);border-bottom:1px solid var(--ds-color-border)}
.token-table td{padding:var(--ds-space-2) var(--ds-space-3);border-bottom:1px solid var(--ds-color-border-subtle);font-family:var(--ds-font-mono);font-size:var(--ds-text-caption);vertical-align:middle}
.token-table td:first-child{font-weight:600;font-family:var(--ds-font-ui);font-size:var(--ds-text-body-sm)}

/* ===== Slider ===== */
.ds-slider-group{max-width:320px;width:100%}
.ds-slider-label-row{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--ds-space-2)}
.ds-slider-label-row .ds-label{margin-bottom:0}
.ds-slider-value{font-size:var(--ds-text-body-sm);font-weight:600;color:var(--ds-color-fg);min-width:36px;text-align:right;font-variant-numeric:tabular-nums}
.ds-slider-track-wrap{position:relative;height:28px;display:flex;align-items:center}
.ds-slider-track{position:absolute;left:0;right:0;height:6px;background:var(--ds-color-border-subtle);border-radius:var(--ds-radius-full);top:50%;transform:translateY(-50%);pointer-events:none}
.ds-slider-fill{position:absolute;left:0;top:50%;transform:translateY(-50%);height:6px;background:var(--ds-accent);border-radius:var(--ds-radius-full);pointer-events:none}
.ds-slider{position:relative;width:100%;height:28px;-webkit-appearance:none;appearance:none;background:transparent;outline:none;cursor:pointer;margin:0;z-index:2}
.ds-slider::-webkit-slider-thumb{-webkit-appearance:none;width:24px;height:24px;border-radius:50%;background:var(--ds-color-surface-raised);border:3px solid var(--ds-accent);box-shadow:0 1px 4px oklch(0% 0 0 / 12%);cursor:pointer;transition:transform .15s,box-shadow .15s}
.ds-slider::-webkit-slider-thumb:hover{transform:scale(1.15);box-shadow:0 1px 8px oklch(0% 0 0 / 18%),0 0 0 6px color-mix(in oklch,var(--ds-accent) 15%,transparent)}
.ds-slider::-webkit-slider-runnable-track{height:28px;background:transparent;border:none}
.ds-slider::-moz-range-thumb{width:24px;height:24px;border-radius:50%;background:var(--ds-color-surface-raised);border:3px solid var(--ds-accent);box-shadow:0 1px 4px oklch(0% 0 0 / 12%);cursor:pointer}
.ds-slider::-moz-range-track{height:6px;background:transparent;border:none}
.ds-slider-labels{display:flex;justify-content:space-between;font-size:var(--ds-text-caption);color:var(--ds-color-muted);margin-top:var(--ds-space-1)}

/* ===== Date Picker ===== */
.ds-date-group{display:flex;flex-direction:column;gap:var(--ds-space-2)}
.ds-date-wrap{position:relative;width:100%;max-width:320px}
.ds-date-input{font-family:var(--ds-font-ui);font-size:var(--ds-text-body);color:var(--ds-color-fg);padding:.75rem 2.75rem .75rem 1rem;background:var(--ds-color-surface-raised);border:1px solid var(--ds-color-border);border-radius:var(--ds-radius-xl);outline:none;width:100%;transition:border-color .2s,box-shadow .2s;letter-spacing:.02em}
.ds-date-input:focus{border-color:var(--ds-accent);box-shadow:0 0 0 3px color-mix(in oklch,var(--ds-accent) 12%,transparent)}
.ds-date-input::placeholder{color:var(--ds-color-muted)}
.ds-date-icon{position:absolute;right:1rem;top:50%;transform:translateY(-50%);width:18px;height:18px;color:var(--ds-color-muted);pointer-events:none;opacity:.6}
.ds-date-calendar{width:100%;max-width:320px;background:var(--ds-color-surface-raised);border:1px solid var(--ds-color-border);border-radius:var(--ds-radius-2xl);box-shadow:var(--ds-shadow-xl);padding:var(--ds-space-4);margin-top:var(--ds-space-2)}
.ds-cal-header{display:flex;justify-content:space-between;align-items:center;padding:0;margin-bottom:var(--ds-space-4)}
.ds-cal-nav{background:none;border:none;color:var(--ds-color-muted);cursor:pointer;width:36px;height:36px;border-radius:var(--ds-radius-lg);display:flex;align-items:center;justify-content:center;transition:all .15s}
.ds-cal-nav:hover{color:var(--ds-color-fg);background:var(--ds-color-surface-overlay)}
.ds-cal-nav:focus-visible{outline:2px solid var(--ds-accent);outline-offset:1px}
.ds-cal-month-year{display:flex;flex-direction:column;align-items:center;gap:2px}
.ds-cal-month{font-family:var(--ds-font-body);font-size:var(--ds-text-body);font-weight:600;color:var(--ds-color-fg)}
.ds-cal-year{font-family:var(--ds-font-mono);font-size:var(--ds-text-caption);color:var(--ds-color-muted)}
.ds-cal-weekdays{display:grid;grid-template-columns:repeat(7,1fr);gap:0;text-align:center;margin-bottom:var(--ds-space-1);padding-bottom:var(--ds-space-2);border-bottom:1px solid var(--ds-color-border-subtle)}
.ds-cal-weekdays span{font-family:var(--ds-font-body);font-size:11px;font-weight:600;color:var(--ds-color-muted);text-transform:uppercase;letter-spacing:.05em;padding:6px 0}
.ds-cal-weekend{color:var(--ds-color-muted)!important}
.ds-cal-grid-new{display:grid;grid-template-columns:repeat(7,1fr);gap:2px;text-align:center}
.ds-cal-day{width:100%;aspect-ratio:1;min-height:38px;display:flex;align-items:center;justify-content:center;border-radius:var(--ds-radius-lg);font-family:var(--ds-font-body);font-size:var(--ds-text-body-sm);font-weight:500;color:var(--ds-color-fg);cursor:pointer;transition:all .12s;border:none;background:none}
.ds-cal-day:hover:not(.ds-cal-muted){background:var(--ds-color-surface-overlay);transform:scale(1.05)}
.ds-cal-day:focus-visible{outline:2px solid var(--ds-accent);outline-offset:1px}
.ds-cal-today{font-weight:700;color:var(--ds-accent);position:relative}
.ds-cal-today::after{content:'';position:absolute;bottom:5px;left:50%;transform:translateX(-50%);width:5px;height:5px;border-radius:50%;background:var(--ds-accent)}
.ds-cal-selected{background:var(--ds-accent)!important;color:var(--ds-color-white)!important;font-weight:700;border-radius:var(--ds-radius-lg);box-shadow:0 2px 8px color-mix(in oklch,var(--ds-accent) 30%,transparent)}
.ds-cal-selected:hover{background:var(--ds-accent)!important;transform:scale(1.05)!important}
.ds-cal-selected.ds-cal-today::after{background:var(--ds-color-white)}
.ds-cal-muted{color:var(--ds-color-border-strong)!important;cursor:not-allowed!important;font-weight:400}
.ds-cal-muted:hover{background:transparent!important;transform:none!important}
.ds-cal-muted:focus-visible{outline:none}
.ds-cal-weekend-col{color:var(--ds-color-muted)}
.ds-cal-footer{display:flex;justify-content:flex-end;gap:var(--ds-space-2);margin-top:var(--ds-space-4);padding-top:var(--ds-space-3);border-top:1px solid var(--ds-color-border-subtle)}
.ds-cal-btn{font-family:var(--ds-font-ui);font-size:var(--ds-text-body-sm);font-weight:500;background:none;border:none;padding:.5rem var(--ds-space-4);border-radius:var(--ds-radius-lg);cursor:pointer;color:var(--ds-color-muted);transition:all .15s;letter-spacing:0}
.ds-cal-btn:hover{background:var(--ds-color-surface-overlay);color:var(--ds-color-fg)}
.ds-cal-btn:focus-visible{outline:2px solid var(--ds-accent);outline-offset:1px}
.ds-cal-btn--primary{background:var(--ds-accent);color:var(--ds-color-white);font-weight:600}
.ds-cal-btn--primary:hover{background:color-mix(in oklch,var(--ds-accent) 85%,black)}


/* ===== Article Table of Contents ===== */
.ds-toc-article{max-width:320px;padding:var(--ds-space-5);background:var(--ds-color-surface);border:1px solid var(--ds-color-border-subtle);border-radius:var(--ds-radius-xl);font-size:var(--ds-text-body-sm)}
.ds-toc-article-title{font-size:var(--ds-text-caption);text-transform:uppercase;letter-spacing:var(--ds-tracking-wider);font-weight:600;color:var(--ds-color-muted);margin-bottom:var(--ds-space-4);padding-bottom:var(--ds-space-3);border-bottom:1px solid var(--ds-color-border)}
.ds-toc-list{list-style:none;display:flex;flex-direction:column;gap:var(--ds-space-1)}
.ds-toc-link{display:flex;align-items:center;gap:var(--ds-space-2);padding:var(--ds-space-1) var(--ds-space-3);border-radius:var(--ds-radius-md);color:var(--ds-color-muted);text-decoration:none;transition:all .15s;line-height:var(--ds-leading-snug)}
.ds-toc-link:hover{color:var(--ds-color-fg);background:var(--ds-color-surface-overlay)}
.ds-toc-link--active{color:var(--ds-accent);font-weight:600;background:var(--ds-accent-muted)}
.ds-toc-link--h3{padding-left:var(--ds-space-8);font-size:var(--ds-text-caption)}
.ds-toc-indicator{width:3px;height:3px;border-radius:50%;background:currentColor;flex-shrink:0;opacity:.4}
.ds-toc-link--active .ds-toc-indicator{width:6px;height:6px;opacity:1;background:var(--ds-accent)}
.ds-toc-badge{font-size:10px;background:var(--ds-accent-soft);color:var(--ds-accent);padding:1px 6px;border-radius:var(--ds-radius-sm);margin-left:auto}

/* ===== Theme Toggle ===== */
#theme-toggle{position:fixed;bottom:24px;right:24px;z-index:999;width:44px;height:44px;border-radius:50%;border:1px solid var(--ds-color-border);background:color-mix(in oklch,var(--ds-color-surface-raised),transparent 30%);color:var(--ds-color-muted);cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:var(--ds-shadow-lg);transition:all .2s;backdrop-filter:blur(8px)}
#theme-toggle:hover{color:var(--ds-color-fg);border-color:var(--ds-color-fg-subtle)}
#theme-toggle svg{width:18px;height:18px}
[data-theme="dark"] #theme-toggle .moon-icon{display:none}
[data-theme="dark"] #theme-toggle .sun-icon{display:block}
#theme-toggle .sun-icon{display:none}
#theme-toggle .moon-icon{display:block}

/* ===== Overlay & Glass Effects ===== */
.ds-overlay-sample{position:relative;width:100%;height:80px;border-radius:var(--ds-radius-lg);overflow:hidden;display:flex;align-items:center;justify-content:center}
.ds-overlay-bg{position:absolute;inset:0;background:linear-gradient(135deg,var(--ds-color-olive-200),var(--ds-color-info-bg),var(--ds-color-olive-300))}
.ds-overlay-layer{position:absolute;inset:0;display:flex;align-items:center;justify-content:center}
.ds-overlay-layer span{font-family:var(--ds-font-mono);font-size:var(--ds-text-caption);color:var(--ds-color-fg-inverse);background:var(--ds-color-fg);padding:2px 8px;border-radius:var(--ds-radius-sm);opacity:.85}
.ds-overlay-strong{background:var(--ds-color-overlay)}
.ds-overlay-light{background:var(--ds-color-overlay-light)}
.ds-overlay-label{font-size:var(--ds-text-caption);color:var(--ds-color-muted);margin-top:var(--ds-space-2);text-align:center}

.ds-glass-demo-bg{position:relative;padding:var(--ds-space-8);border-radius:var(--ds-radius-2xl);overflow:hidden;min-height:200px;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:var(--ds-space-4)}
.ds-glass-demo-bg::before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,var(--ds-color-olive-200),var(--ds-color-info-bg),var(--ds-color-olive-300),var(--ds-color-warning-bg));opacity:.6;z-index:0}
.ds-glass-card{background:var(--ds-glass-bg);-webkit-backdrop-filter:blur(var(--ds-blur-lg));backdrop-filter:blur(var(--ds-blur-lg));border:1px solid var(--ds-glass-border);border-radius:var(--ds-radius-xl);padding:var(--ds-space-6);box-shadow:var(--ds-glass-shadow),var(--ds-shadow-md);position:relative;z-index:1;max-width:360px;width:100%;transition:background .4s,border-color .4s}
.ds-glass-card h4{font-family:var(--ds-font-display);font-size:var(--ds-text-h4);margin-bottom:var(--ds-space-2);color:var(--ds-color-fg)}
.ds-glass-card p{font-size:var(--ds-text-body-sm);color:var(--ds-color-muted);margin-bottom:var(--ds-space-4)}
.ds-glass-card .ds-glass-meta{display:flex;justify-content:space-between;align-items:center;padding-top:var(--ds-space-3);border-top:1px solid var(--ds-glass-border);font-size:var(--ds-text-caption);color:var(--ds-color-muted)}
.ds-glass-card--sm{padding:var(--ds-space-4)}
.ds-glass-card--lg{padding:var(--ds-space-8)}
.ds-glass-card .ds-btn--ghost{position:relative;z-index:2}

.ds-frosted-nav{display:inline-flex;align-items:center;gap:var(--ds-space-6);padding:var(--ds-space-3) var(--ds-space-6);border-radius:var(--ds-radius-2xl);background:var(--ds-glass-bg);-webkit-backdrop-filter:blur(var(--ds-blur-lg));backdrop-filter:blur(var(--ds-blur-lg));border:1px solid var(--ds-glass-border);box-shadow:var(--ds-glass-shadow),var(--ds-shadow-sm);position:relative;z-index:1}
.ds-frosted-nav a{color:var(--ds-color-muted);text-decoration:none;font-size:var(--ds-text-body-sm);font-weight:500;transition:color .15s;letter-spacing:var(--ds-tracking-wide)}
.ds-frosted-nav a:hover{color:var(--ds-color-fg)}
.ds-frosted-nav a.ds-active{color:var(--ds-accent);font-weight:600}

.ds-toast-group{display:flex;flex-direction:column;gap:var(--ds-space-3);position:relative;z-index:1;width:100%}
.ds-toast{display:flex;align-items:center;gap:var(--ds-space-3);padding:var(--ds-space-3) var(--ds-space-5);border-radius:var(--ds-radius-xl);background:var(--ds-glass-bg);-webkit-backdrop-filter:blur(var(--ds-blur-lg));backdrop-filter:blur(var(--ds-blur-lg));border:1px solid var(--ds-glass-border);box-shadow:var(--ds-glass-shadow),var(--ds-shadow-md);font-size:var(--ds-text-body-sm);transition:background .4s,border-color .4s}
.ds-toast-icon{width:18px;height:18px;flex-shrink:0;color:var(--ds-accent)}
.ds-toast--error .ds-toast-icon{color:var(--ds-color-error)}
.ds-toast--success .ds-toast-icon{color:var(--ds-color-success)}
.ds-toast--warning .ds-toast-icon{color:var(--ds-color-warning)}
.ds-toast-text{flex:1;color:var(--ds-color-fg)}
.ds-toast-close{width:18px;height:18px;color:var(--ds-color-muted);cursor:pointer;opacity:.5;transition:opacity .15s;background:none;border:none;padding:0}
.ds-toast-close:hover{opacity:1}

.ds-glass-btn{background:var(--ds-glass-bg);-webkit-backdrop-filter:blur(var(--ds-blur-md));backdrop-filter:blur(var(--ds-blur-md));border:1px solid var(--ds-glass-border);border-radius:var(--ds-radius-xl);padding:var(--ds-space-3) var(--ds-space-6);font-family:var(--ds-font-ui);font-size:var(--ds-text-body-sm);font-weight:500;color:var(--ds-color-fg);cursor:pointer;transition:all .2s;box-shadow:var(--ds-glass-shadow);position:relative;z-index:1}
.ds-glass-btn:hover{background:color-mix(in oklch,var(--ds-glass-bg) 85%,var(--ds-accent) 15%);border-color:color-mix(in oklch,var(--ds-glass-border) 70%,var(--ds-accent) 30%);color:var(--ds-accent)}
.ds-glass-btn-row{display:flex;gap:var(--ds-space-3);flex-wrap:wrap;position:relative;z-index:1}

/* ===== Responsive Navbar ===== */
.ds-navbar{position:sticky;top:0;z-index:var(--ds-z-sticky);background:var(--ds-glass-bg);-webkit-backdrop-filter:blur(var(--ds-blur-lg));backdrop-filter:blur(var(--ds-blur-lg));border-bottom:1px solid var(--ds-glass-border);transition:box-shadow .3s,background .4s,border-color .4s}
.ds-navbar--scrolled{box-shadow:var(--ds-shadow-md);border-bottom-color:var(--ds-color-border)}
.ds-navbar-inner{max-width:1200px;margin:0 auto;padding:0 var(--ds-space-6);display:flex;align-items:center;justify-content:space-between;height:64px}
.ds-navbar-brand{font-family:var(--ds-font-display);font-size:var(--ds-text-h5);font-weight:700;color:var(--ds-color-fg-strong);text-decoration:none;letter-spacing:var(--ds-tracking-wide);display:flex;align-items:center;gap:var(--ds-space-2)}
.ds-navbar-brand:hover{color:var(--ds-accent)}
.ds-navbar-brand svg{width:24px;height:24px;color:var(--ds-accent)}
.ds-navbar-links{display:flex;align-items:center;gap:var(--ds-space-1)}
.ds-navbar-link{font-family:var(--ds-font-ui);font-size:var(--ds-text-body-sm);font-weight:500;color:var(--ds-color-muted);text-decoration:none;padding:var(--ds-space-2) var(--ds-space-3);border-radius:var(--ds-radius-lg);transition:all .2s}
.ds-navbar-link:hover{color:var(--ds-color-fg);background:var(--ds-accent-soft)}
.ds-navbar-link--active{color:var(--ds-accent);font-weight:600}
.ds-navbar-toggle{display:none;background:none;border:none;color:var(--ds-color-fg);cursor:pointer;width:40px;height:40px;border-radius:var(--ds-radius-lg);align-items:center;justify-content:center;transition:all .2s}
.ds-navbar-toggle:hover{background:var(--ds-accent-soft);color:var(--ds-accent)}
.ds-navbar-toggle svg{width:22px;height:22px}
.ds-navbar-overlay{display:none;position:fixed;inset:0;background:var(--ds-color-overlay);z-index:calc(var(--ds-z-modal) - 1);opacity:0;transition:opacity .3s}
.ds-navbar-overlay--open{display:block;opacity:1}

/* ===== Navbar mobile ===== */
@media(max-width:767px){
  /* Mobile: navbar uses solid background (no glass) for readability */
  .ds-navbar{background:var(--ds-color-surface-raised);-webkit-backdrop-filter:none;backdrop-filter:none;border-bottom:1px solid var(--ds-color-border)}
  /* Hamburger toggle: visible border + surface bg for clarity */
  .ds-navbar-toggle{display:flex;background:var(--ds-color-surface);border:1px solid var(--ds-color-border);color:var(--ds-color-fg)}
  .ds-navbar-toggle:hover,.ds-navbar-toggle:active{background:var(--ds-accent-soft);border-color:var(--ds-accent);color:var(--ds-accent)}
  /* Mobile drawer: solid opaque background, no transparency */
  .ds-navbar-links{position:fixed;top:0;right:0;bottom:0;width:280px;background:var(--ds-color-surface-raised);flex-direction:column;gap:var(--ds-space-2);padding:var(--ds-space-16) var(--ds-space-6) var(--ds-space-6);transform:translateX(100%);transition:transform .35s cubic-bezier(.16,1,.3,1);z-index:var(--ds-z-modal);align-items:stretch;box-shadow:var(--ds-shadow-2xl);border-left:1px solid var(--ds-color-border);-webkit-backdrop-filter:none;backdrop-filter:none}
  .ds-navbar-links--open{transform:translateX(0)}
  .ds-navbar-link{padding:var(--ds-space-3) var(--ds-space-4);font-size:var(--ds-text-body);border-radius:var(--ds-radius-lg);color:var(--ds-color-fg)}
  .ds-navbar-link:hover,.ds-navbar-link:active{background:var(--ds-accent-soft);color:var(--ds-accent)}
  .ds-navbar-link--active{background:var(--ds-accent-muted);color:var(--ds-accent);font-weight:600}
  /* Drawer header divider */
  .ds-navbar-links::before{content:"";display:block;position:absolute;top:0;left:0;right:0;height:var(--ds-space-14);background:var(--ds-color-surface);border-bottom:1px solid var(--ds-color-border-subtle)}
}
@media(min-width:768px){
  .ds-navbar-links{display:flex!important}
}

/* ===== Floating TOC ===== */
.ds-floating-toc{position:fixed;right:24px;top:50%;transform:translateY(-50%);z-index:var(--ds-z-dropdown);display:flex;flex-direction:column;gap:var(--ds-space-3);padding:var(--ds-space-4) var(--ds-space-3);background:var(--ds-glass-bg);-webkit-backdrop-filter:blur(var(--ds-blur-md));backdrop-filter:blur(var(--ds-blur-md));border:1px solid var(--ds-glass-border);border-radius:var(--ds-radius-2xl);box-shadow:var(--ds-glass-shadow),var(--ds-shadow-md);transition:opacity .4s,transform .4s}
.ds-floating-toc--hidden{opacity:0;pointer-events:none;transform:translateY(-50%) translateX(20px)}
.ds-floating-toc-label{font-size:10px;text-transform:uppercase;letter-spacing:var(--ds-tracking-widest);color:var(--ds-color-muted);font-weight:600;text-align:center;padding-bottom:var(--ds-space-2);border-bottom:1px solid var(--ds-color-border-subtle);margin-bottom:var(--ds-space-1)}
.ds-floating-toc-list{list-style:none;display:flex;flex-direction:column;gap:var(--ds-space-1)}
.ds-floating-toc-link{display:flex;align-items:center;gap:var(--ds-space-2);text-decoration:none;color:var(--ds-color-muted);font-size:var(--ds-text-caption);padding:var(--ds-space-1) var(--ds-space-2);border-radius:var(--ds-radius-lg);transition:all .2s;white-space:nowrap}
.ds-floating-toc-link:hover{color:var(--ds-color-fg);background:var(--ds-accent-soft)}
.ds-floating-toc-dot{width:6px;height:6px;border-radius:50%;background:var(--ds-color-border);flex-shrink:0;transition:all .3s}
.ds-floating-toc-link--active{color:var(--ds-accent);font-weight:600}
.ds-floating-toc-link--active .ds-floating-toc-dot{background:var(--ds-accent);box-shadow:0 0 0 3px color-mix(in oklch,var(--ds-accent) 20%,transparent)}
.ds-floating-toc-num{font-family:var(--ds-font-mono);font-size:10px;color:var(--ds-color-border-strong);min-width:16px;text-align:right}

@media(max-width:1023px){
  .ds-floating-toc{display:none}
}

/* ===== Timeline Component ===== */
.ds-timeline{position:relative;display:flex;flex-direction:column;gap:0;padding:var(--ds-space-6) 0}
.ds-timeline::before{content:'';position:absolute;left:20px;top:0;bottom:0;width:2px;background:var(--ds-color-border-subtle)}
.ds-timeline-item{position:relative;padding:0 0 var(--ds-space-8) var(--ds-space-14)}
.ds-timeline-item:last-child{padding-bottom:0}
.ds-timeline-dot{position:absolute;left:11px;top:4px;width:20px;height:20px;border-radius:50%;background:var(--ds-color-surface-raised);border:3px solid var(--ds-accent);box-shadow:0 0 0 4px color-mix(in oklch,var(--ds-accent) 12%,transparent),var(--ds-shadow-sm);z-index:1;transition:all .3s}
.ds-timeline-item:hover .ds-timeline-dot{background:var(--ds-accent);box-shadow:0 0 0 6px color-mix(in oklch,var(--ds-accent) 20%,transparent),var(--ds-shadow-md);transform:scale(1.1)}
.ds-timeline-content{background:var(--ds-color-surface);border-radius:var(--ds-radius-xl);padding:var(--ds-space-5) var(--ds-space-6);border:1px solid var(--ds-color-border-subtle);transition:all .2s}
.ds-timeline-item:hover .ds-timeline-content{border-color:var(--ds-color-border);box-shadow:var(--ds-shadow-sm)}
.ds-timeline-date{font-family:var(--ds-font-mono);font-size:var(--ds-text-caption);color:var(--ds-accent);font-weight:600;margin-bottom:var(--ds-space-2);letter-spacing:var(--ds-tracking-wide)}
.ds-timeline-title{font-family:var(--ds-font-display);font-size:var(--ds-text-h5);font-weight:600;color:var(--ds-color-fg-strong);margin-bottom:var(--ds-space-2)}
.ds-timeline-content p{font-size:var(--ds-text-body-sm);color:var(--ds-color-muted);line-height:var(--ds-leading-relaxed)}
.ds-timeline-tag{display:inline-block;padding:2px 10px;border-radius:var(--ds-radius-full);font-size:11px;font-weight:600;background:var(--ds-accent-soft);color:var(--ds-accent);margin-bottom:var(--ds-space-3);letter-spacing:var(--ds-tracking-wide)}

/* ===== Contact Form Component ===== */
.ds-contact-form{max-width:640px}
.ds-form-row{display:grid;grid-template-columns:1fr 1fr;gap:var(--ds-space-5)}
.ds-form-group{display:flex;flex-direction:column;gap:var(--ds-space-2)}
.ds-form-label{font-family:var(--ds-font-ui);font-size:var(--ds-text-body-sm);font-weight:600;color:var(--ds-color-fg)}
.ds-form-label .ds-form-required{color:var(--ds-color-error);margin-left:2px}
.ds-form-input,.ds-form-textarea,.ds-form-select{font-family:var(--ds-font-ui);font-size:var(--ds-text-body);color:var(--ds-color-fg);padding:.75rem 1rem;background:var(--ds-color-surface-raised);border:1px solid var(--ds-color-border);border-radius:var(--ds-radius-lg);outline:none;transition:all .2s;width:100%}
.ds-form-input:focus,.ds-form-textarea:focus,.ds-form-select:focus{border-color:var(--ds-accent);box-shadow:0 0 0 3px color-mix(in oklch,var(--ds-accent) 12%,transparent)}
.ds-form-input::placeholder,.ds-form-textarea::placeholder{color:var(--ds-color-muted)}
.ds-form-textarea{min-height:120px;resize:vertical;line-height:var(--ds-leading-relaxed)}
.ds-form-select{-webkit-appearance:none;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23828d9f' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 1rem center;padding-right:2.5rem;cursor:pointer}
.ds-form-select:hover{border-color:var(--ds-color-border-strong)}
.ds-form-hint{font-size:var(--ds-text-caption);color:var(--ds-color-muted);margin-top:2px}
.ds-form-hint--error{color:var(--ds-color-error)}
.ds-form-submit{margin-top:var(--ds-space-2)}
.ds-form-checkbox{display:flex;align-items:flex-start;gap:var(--ds-space-3);cursor:pointer}
.ds-form-checkbox input[type="checkbox"]{margin-top:3px;width:18px;height:18px;accent-color:var(--ds-accent);cursor:pointer}
.ds-form-checkbox label{font-size:var(--ds-text-body-sm);color:var(--ds-color-muted);cursor:pointer;line-height:var(--ds-leading-snug)}
.ds-form-checkbox label a{color:var(--ds-accent);text-decoration:underline}

@media(max-width:639px){
  .ds-form-row{grid-template-columns:1fr}
}

/* ===== Decorative Elements ===== */
.ds-edge-decor{position:fixed;pointer-events:none;z-index:0;opacity:.4}
.ds-edge-decor--tl{top:0;left:0;width:120px;height:120px}
.ds-edge-decor--tr{top:0;right:0;width:120px;height:120px;transform:scaleX(-1)}
.ds-edge-decor--bl{bottom:0;left:0;width:120px;height:120px;transform:scaleY(-1)}
.ds-edge-decor--br{bottom:0;right:0;width:120px;height:120px;transform:scale(-1)}
.ds-edge-decor svg{width:100%;height:100%;color:var(--ds-accent);opacity:.15}
[data-theme="dark"] .ds-edge-decor svg{opacity:.08}

.ds-bg-blob{position:fixed;pointer-events:none;z-index:0;border-radius:50%;filter:blur(80px);opacity:.06}
.ds-bg-blob--1{width:500px;height:500px;background:var(--ds-accent);top:-150px;right:-100px}
.ds-bg-blob--2{width:400px;height:400px;background:var(--ds-color-olive-300);bottom:-100px;left:-80px}
.ds-bg-blob--3{width:300px;height:300px;background:var(--ds-color-olive-200);top:50%;left:50%;transform:translate(-50%,-50%)}
[data-theme="dark"] .ds-bg-blob{opacity:.04}

/* ===== Responsive optimizations ===== */
@media(max-width:639px){
  .ds-cover h1{font-size:2.25rem;letter-spacing:0}.ds-cover .ds-subtitle{font-size:var(--ds-text-h5)}
  .ds-section{padding:var(--ds-space-12) 0}
  .ds-wrapper{padding:0 var(--ds-space-4)}
  .ds-h2{font-size:1.75rem}.ds-h3{font-size:1.375rem}
  .ds-grid-4{grid-template-columns:1fr}
  .ds-grid-6{grid-template-columns:repeat(2,1fr)}
  .ds-timeline-item{padding-left:var(--ds-space-12)}
  .ds-timeline::before{left:14px}.ds-timeline-dot{left:5px;width:16px;height:16px}
  .ds-form-row{grid-template-columns:1fr}
}
@media(min-width:640px)and(max-width:1023px){
  .ds-grid-4{grid-template-columns:repeat(2,1fr)}
  .ds-h2{font-size:2rem}
}
@media(min-width:1024px)and(max-width:1439px){
  .ds-wrapper{padding:0 var(--ds-space-8)}
}

/* ===== Print ===== */
@media print{
  .ds-navbar,.ds-floating-toc,.ds-edge-decor,.ds-bg-blob,#theme-toggle{display:none!important}
  .ds-section{break-inside:avoid;padding:var(--ds-space-12) 0}
}


/* =========================================================================
   CGArtLab Design System v1.1 — Site Shell, Motion & Extended Components
   Appended layer. Fully token-driven. Powers the showcase website
   (index / handbook / docs / prompts / downloads) and is the canonical
   reference any consumer can copy.
   ========================================================================= */

/* ===== Motion tokens ===== */
:root{
  --ds-reveal-distance:18px;
  --ds-reveal-duration:var(--ds-duration-700);
  --ds-reveal-ease:var(--ds-ease-out);
}

/* ===== Keyframes ===== */
@keyframes ds-fade-in{from{opacity:0}to{opacity:1}}
@keyframes ds-fade-up{from{opacity:0;transform:translateY(var(--ds-reveal-distance))}to{opacity:1;transform:none}}
@keyframes ds-fade-down{from{opacity:0;transform:translateY(calc(-1 * var(--ds-reveal-distance)))}to{opacity:1;transform:none}}
@keyframes ds-zoom-in{from{opacity:0;transform:scale(.94)}to{opacity:1;transform:none}}
@keyframes ds-rise{from{opacity:0;transform:translateY(40px)}to{opacity:1;transform:none}}
@keyframes ds-float{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
@keyframes ds-spin-slow{to{transform:rotate(360deg)}}
@keyframes ds-pulse-soft{0%,100%{opacity:.6;transform:scale(1)}50%{opacity:1;transform:scale(1.04)}}
@keyframes ds-pulse-ring{0%{box-shadow:0 0 0 0 color-mix(in oklch,var(--ds-accent) 45%,transparent)}70%{box-shadow:0 0 0 12px transparent}100%{box-shadow:0 0 0 0 transparent}}
@keyframes ds-gradient-pan{0%{background-position:0% 50%}50%{background-position:100% 50%}100%{background-position:0% 50%}}
@keyframes ds-draw{from{stroke-dashoffset:var(--ds-draw-len,240)}to{stroke-dashoffset:0}}
@keyframes ds-blink{0%,100%{opacity:1}50%{opacity:0}}

/* ===== Scroll reveal ===== */
.ds-reveal{opacity:0;transform:translateY(var(--ds-reveal-distance));transition:opacity var(--ds-reveal-duration) var(--ds-reveal-ease),transform var(--ds-reveal-duration) var(--ds-reveal-ease);transition-delay:var(--d,0ms);will-change:opacity,transform}
.ds-reveal--left{transform:translateX(calc(-1 * var(--ds-reveal-distance)))}
.ds-reveal--right{transform:translateX(var(--ds-reveal-distance))}
.ds-reveal--scale{transform:scale(.96)}
.ds-reveal.is-visible{opacity:1;transform:none}

/* ===== Continuous motion utilities ===== */
.ds-anim-float{animation:ds-float 6s var(--ds-ease-in-out) infinite}
.ds-anim-spin-slow{animation:ds-spin-slow 18s linear infinite}
.ds-anim-pulse{animation:ds-pulse-soft 3s var(--ds-ease-in-out) infinite}
.ds-anim-fade-in{animation:ds-fade-in var(--ds-duration-500) var(--ds-ease-out) both}
.ds-anim-rise{animation:ds-rise var(--ds-duration-700) var(--ds-ease-out) both}

/* ===== Brand logo ===== */
.ds-logo{display:inline-flex;align-items:center;gap:var(--ds-space-3);text-decoration:none;color:var(--ds-color-fg-strong)}
.ds-logo-mark{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:var(--ds-radius-lg);background:var(--ds-accent);color:var(--ds-color-white);flex-shrink:0;box-shadow:var(--ds-shadow-sm);transition:transform var(--ds-duration-300) var(--ds-ease-spring)}
.ds-logo:hover .ds-logo-mark{transform:rotate(-6deg) scale(1.05)}
.ds-logo-mark svg{width:24px;height:24px}
.ds-logo-text{display:flex;flex-direction:column;line-height:1}
.ds-logo-word{font-family:var(--ds-font-display);font-weight:var(--ds-weight-bold);font-size:var(--ds-text-body-lg);letter-spacing:var(--ds-tracking-tight);color:var(--ds-color-fg-strong)}
.ds-logo-sub{font-family:var(--ds-font-mono);font-size:9px;font-weight:600;letter-spacing:var(--ds-tracking-widest);text-transform:uppercase;color:var(--ds-color-muted);margin-top:3px}
.ds-logo--lg .ds-logo-mark{width:56px;height:56px;border-radius:var(--ds-radius-xl)}
.ds-logo--lg .ds-logo-mark svg{width:36px;height:36px}
.ds-logo--lg .ds-logo-word{font-size:var(--ds-text-h3)}
.ds-logo--lg .ds-logo-sub{font-size:var(--ds-text-caption)}

/* Animated hero mark (line draw) */
.ds-logo-hero{width:96px;height:96px;border-radius:var(--ds-radius-2xl);background:linear-gradient(135deg,var(--ds-accent),var(--ds-color-olive-600));color:var(--ds-color-white);display:inline-flex;align-items:center;justify-content:center;box-shadow:var(--ds-shadow-xl);position:relative}
.ds-logo-hero svg{width:60px;height:60px}
.ds-logo-draw path,.ds-logo-draw circle{stroke-dasharray:var(--ds-draw-len,120);stroke-dashoffset:var(--ds-draw-len,120);animation:ds-draw 1.4s var(--ds-ease-out) forwards}
.ds-logo-draw path:nth-child(2){animation-delay:.5s}
.ds-logo-draw path:nth-child(n+3){animation-delay:.8s;--ds-draw-len:30}

/* ===== Navbar enhancements (multi-page site) ===== */
.ds-navbar-actions{display:flex;align-items:center;gap:var(--ds-space-2)}
.ds-navbar-cta{display:inline-flex;align-items:center;gap:var(--ds-space-2);font-family:var(--ds-font-ui);font-size:var(--ds-text-body-sm);font-weight:600;padding:var(--ds-space-2) var(--ds-space-4);border-radius:var(--ds-radius-md);background:var(--ds-accent);color:var(--ds-color-white);text-decoration:none;transition:background var(--ds-duration-150)}
.ds-navbar-cta:hover{background:var(--ds-accent-hover)}
.ds-navbar-icon-link{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:var(--ds-radius-md);color:var(--ds-color-muted);transition:all var(--ds-duration-150)}
.ds-navbar-icon-link:hover{color:var(--ds-color-fg);background:var(--ds-accent-soft)}
.ds-navbar-icon-link svg{width:20px;height:20px}

/* ===== Generic eyebrow / section helpers ===== */
.ds-eyebrow{display:inline-block;font-family:var(--ds-font-mono);font-size:var(--ds-text-caption);text-transform:uppercase;letter-spacing:var(--ds-tracking-widest);font-weight:600;color:var(--ds-accent)}
.ds-section--alt{background:var(--ds-color-surface)}
.ds-section--tight{padding:var(--ds-space-16) 0}
.ds-section-head{max-width:680px;margin-bottom:var(--ds-space-12)}
.ds-section-head--center{margin-left:auto;margin-right:auto;text-align:center}
.ds-section-head .ds-eyebrow{margin-bottom:var(--ds-space-4)}
.ds-section-head h2{font-family:var(--ds-font-display);font-size:var(--ds-text-h2);font-weight:var(--ds-weight-bold);color:var(--ds-color-fg-strong);letter-spacing:var(--ds-tracking-tight);margin-bottom:var(--ds-space-4);line-height:var(--ds-leading-snug)}
.ds-section-head p{font-size:var(--ds-text-body-lg);color:var(--ds-color-muted);line-height:var(--ds-leading-relaxed)}
.ds-lead{font-size:var(--ds-text-lead);line-height:var(--ds-leading-relaxed);color:var(--ds-color-fg-subtle)}

/* ===== Landing hero ===== */
.ds-hero-section{position:relative;padding:var(--ds-space-28) 0 var(--ds-space-24);text-align:center;overflow:hidden}
.ds-hero-inner{position:relative;z-index:1;max-width:860px;margin:0 auto}
.ds-hero-badge{display:inline-flex;align-items:center;gap:var(--ds-space-2);padding:var(--ds-space-2) var(--ds-space-4);border-radius:var(--ds-radius-full);background:var(--ds-color-surface-raised);border:1px solid var(--ds-color-border);font-size:var(--ds-text-body-sm);color:var(--ds-color-fg-subtle);box-shadow:var(--ds-shadow-xs);margin-bottom:var(--ds-space-8)}
.ds-hero-badge .ds-dot{width:7px;height:7px;border-radius:50%;background:var(--ds-color-success);box-shadow:0 0 0 3px var(--ds-color-success-bg)}
.ds-hero-title{font-family:var(--ds-font-display);font-size:var(--ds-text-hero);font-weight:var(--ds-weight-bold);line-height:1.05;letter-spacing:var(--ds-tracking-tight);color:var(--ds-color-fg-strong);margin:0 auto var(--ds-space-6);max-width:14ch}
.ds-gradient-text{background:linear-gradient(110deg,var(--ds-color-olive-600),var(--ds-accent) 45%,var(--ds-color-olive-300));background-size:200% auto;-webkit-background-clip:text;background-clip:text;color:transparent;-webkit-text-fill-color:transparent;animation:ds-gradient-pan 8s var(--ds-ease-in-out) infinite}
.ds-hero-lead{font-size:var(--ds-text-h5);font-weight:var(--ds-weight-light);line-height:var(--ds-leading-relaxed);color:var(--ds-color-muted);max-width:42ch;margin:0 auto var(--ds-space-10)}
.ds-hero-actions{display:flex;flex-wrap:wrap;gap:var(--ds-space-4);justify-content:center;margin-bottom:var(--ds-space-10)}
.ds-hero-meta{font-family:var(--ds-font-mono);font-size:var(--ds-text-body-sm);color:var(--ds-color-muted);letter-spacing:var(--ds-tracking-wide)}
.ds-hero-mark-wrap{margin-bottom:var(--ds-space-8);display:flex;justify-content:center}

/* ===== Feature grid ===== */
.ds-feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:var(--ds-space-6)}
.ds-feature-card{background:var(--ds-color-surface-raised);border:1px solid var(--ds-color-border);border-radius:var(--ds-radius-2xl);padding:var(--ds-space-8);transition:transform var(--ds-duration-300) var(--ds-ease-out),box-shadow var(--ds-duration-300) var(--ds-ease-out),border-color var(--ds-duration-300)}
.ds-feature-card:hover{transform:translateY(-4px);box-shadow:var(--ds-shadow-lg);border-color:var(--ds-color-border-strong)}
.ds-feature-ico{display:inline-flex;align-items:center;justify-content:center;width:48px;height:48px;border-radius:var(--ds-radius-lg);background:var(--ds-accent-soft);color:var(--ds-accent);margin-bottom:var(--ds-space-5)}
.ds-feature-ico svg{width:24px;height:24px;stroke-width:1.75}
.ds-feature-card h3{font-family:var(--ds-font-display);font-size:var(--ds-text-h5);font-weight:var(--ds-weight-semibold);color:var(--ds-color-fg-strong);margin-bottom:var(--ds-space-3)}
.ds-feature-card p{font-size:var(--ds-text-body-sm);line-height:var(--ds-leading-relaxed);color:var(--ds-color-muted)}

/* ===== Stats ===== */
.ds-stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:var(--ds-space-6)}
.ds-stat{text-align:center;padding:var(--ds-space-6) var(--ds-space-4);border-radius:var(--ds-radius-xl);background:var(--ds-color-surface);border:1px solid var(--ds-color-border-subtle)}
.ds-stat-num{font-family:var(--ds-font-display);font-size:var(--ds-text-display);font-weight:var(--ds-weight-bold);line-height:1;color:var(--ds-accent);letter-spacing:var(--ds-tracking-tight)}
.ds-stat-label{display:block;margin-top:var(--ds-space-3);font-size:var(--ds-text-body-sm);color:var(--ds-color-muted)}

/* ===== Compatibility chips ===== */
.ds-compat-grid{display:flex;flex-wrap:wrap;gap:var(--ds-space-3);justify-content:center}
.ds-compat-item{display:inline-flex;align-items:center;gap:var(--ds-space-2);padding:var(--ds-space-3) var(--ds-space-5);border-radius:var(--ds-radius-full);background:var(--ds-color-surface-raised);border:1px solid var(--ds-color-border);font-size:var(--ds-text-body-sm);font-weight:500;color:var(--ds-color-fg-subtle);transition:all var(--ds-duration-200)}
.ds-compat-item:hover{border-color:var(--ds-accent);color:var(--ds-accent)}
.ds-compat-item svg{width:18px;height:18px;color:var(--ds-accent)}

/* ===== Steps ===== */
.ds-steps{display:flex;flex-direction:column;gap:var(--ds-space-6);counter-reset:ds-step}
.ds-step{display:flex;gap:var(--ds-space-5);align-items:flex-start}
.ds-step-num{flex-shrink:0;width:36px;height:36px;border-radius:50%;background:var(--ds-accent-soft);color:var(--ds-accent);display:inline-flex;align-items:center;justify-content:center;font-family:var(--ds-font-mono);font-weight:700;font-size:var(--ds-text-body-sm)}
.ds-step-body{flex:1;min-width:0;padding-top:var(--ds-space-1)}
.ds-step-body h4{font-family:var(--ds-font-display);font-size:var(--ds-text-h5);font-weight:var(--ds-weight-semibold);color:var(--ds-color-fg-strong);margin-bottom:var(--ds-space-2)}
.ds-step-body p{font-size:var(--ds-text-body-sm);color:var(--ds-color-muted);line-height:var(--ds-leading-relaxed)}

/* ===== Code block + copy ===== */
.ds-code{background:var(--ds-color-fg-strong);border-radius:var(--ds-radius-xl);overflow:hidden;border:1px solid var(--ds-color-border);box-shadow:var(--ds-shadow-sm);margin:0}
.ds-code-bar{display:flex;align-items:center;justify-content:space-between;padding:var(--ds-space-3) var(--ds-space-4);background:color-mix(in oklch,var(--ds-color-fg-strong) 88%,var(--ds-color-white));border-bottom:1px solid color-mix(in oklch,var(--ds-color-white) 12%,transparent)}
.ds-code-lang{font-family:var(--ds-font-mono);font-size:var(--ds-text-caption);text-transform:uppercase;letter-spacing:var(--ds-tracking-wider);color:color-mix(in oklch,var(--ds-color-fg-inverse) 70%,transparent);font-weight:600}
.ds-code pre{margin:0;padding:var(--ds-space-5);overflow-x:auto;font-family:var(--ds-font-mono);font-size:var(--ds-text-body-sm);line-height:var(--ds-leading-relaxed);color:oklch(90% 0.02 110)}
.ds-code code{font-family:var(--ds-font-mono);white-space:pre}
.ds-code .tok-c{color:oklch(62% 0.03 130)}/* comment */
.ds-code .tok-p{color:oklch(78% 0.09 60)}/* property */
.ds-code .tok-v{color:oklch(80% 0.07 200)}/* value */
.ds-code .tok-k{color:oklch(78% 0.1 25)}/* keyword */
.ds-code .tok-s{color:oklch(82% 0.1 130)}/* string */

/* Copy button (generic) */
.ds-copy-btn{display:inline-flex;align-items:center;gap:var(--ds-space-2);font-family:var(--ds-font-ui);font-size:var(--ds-text-caption);font-weight:600;padding:var(--ds-space-1) var(--ds-space-3);border-radius:var(--ds-radius-md);border:1px solid color-mix(in oklch,var(--ds-color-white) 18%,transparent);background:transparent;color:color-mix(in oklch,var(--ds-color-fg-inverse) 80%,transparent);cursor:pointer;transition:all var(--ds-duration-150);white-space:nowrap}
.ds-copy-btn:hover{background:color-mix(in oklch,var(--ds-color-white) 12%,transparent);color:var(--ds-color-fg-inverse)}
.ds-copy-btn svg{width:14px;height:14px}
.ds-copy-btn.is-copied{color:oklch(80% 0.12 145);border-color:oklch(60% 0.12 145)}
/* Copy button on light surfaces */
.ds-copy-btn--light{border-color:var(--ds-color-border);background:var(--ds-color-surface-raised);color:var(--ds-color-muted)}
.ds-copy-btn--light:hover{background:var(--ds-accent-soft);color:var(--ds-accent);border-color:var(--ds-accent)}

/* ===== Prompt card ===== */
.ds-prompt{background:var(--ds-color-surface-raised);border:1px solid var(--ds-color-border);border-radius:var(--ds-radius-2xl);overflow:hidden;box-shadow:var(--ds-shadow-sm)}
.ds-prompt-head{display:flex;align-items:center;justify-content:space-between;gap:var(--ds-space-4);padding:var(--ds-space-4) var(--ds-space-5);border-bottom:1px solid var(--ds-color-border-subtle);background:var(--ds-color-surface)}
.ds-prompt-title{font-family:var(--ds-font-ui);font-size:var(--ds-text-body-sm);font-weight:600;color:var(--ds-color-fg);display:flex;align-items:center;gap:var(--ds-space-2)}
.ds-prompt-title svg{width:18px;height:18px;color:var(--ds-accent)}
.ds-prompt-body{max-height:420px;overflow-y:auto;padding:var(--ds-space-5);margin:0;font-family:var(--ds-font-mono);font-size:var(--ds-text-body-sm);line-height:var(--ds-leading-relaxed);color:var(--ds-color-fg-subtle);white-space:pre-wrap;word-break:break-word;background:var(--ds-color-surface)}
.ds-prompt-foot{padding:var(--ds-space-3) var(--ds-space-5);border-top:1px solid var(--ds-color-border-subtle);font-size:var(--ds-text-caption);color:var(--ds-color-muted);display:flex;justify-content:space-between;align-items:center;gap:var(--ds-space-3)}

/* ===== Functional tab panels ===== */
.ds-tabpanel{display:none;animation:ds-fade-in var(--ds-duration-300) var(--ds-ease-out)}
.ds-tabpanel.is-active{display:block}

/* ===== Inline code base ===== */
.ds-prose code,.ds-inline-code{font-family:var(--ds-font-mono);font-size:.9em;padding:.12em .4em;background:var(--ds-accent-muted);color:var(--ds-accent);border-radius:var(--ds-radius-sm)}

/* ===== Docs layout ===== */
.ds-docs{display:grid;grid-template-columns:240px minmax(0,1fr);gap:var(--ds-space-12);align-items:start}
.ds-docs-aside{position:sticky;top:88px;align-self:start}
.ds-docs-aside-title{font-size:var(--ds-text-caption);text-transform:uppercase;letter-spacing:var(--ds-tracking-wider);font-weight:600;color:var(--ds-color-muted);margin-bottom:var(--ds-space-3);padding-left:var(--ds-space-3)}
.ds-docs-menu{list-style:none;display:flex;flex-direction:column;gap:2px;margin:0 0 var(--ds-space-6)}
.ds-docs-menu a{display:block;padding:var(--ds-space-2) var(--ds-space-3);border-radius:var(--ds-radius-md);font-size:var(--ds-text-body-sm);color:var(--ds-color-muted);text-decoration:none;border-left:2px solid transparent;transition:all var(--ds-duration-150)}
.ds-docs-menu a:hover{color:var(--ds-color-fg);background:var(--ds-color-surface)}
.ds-docs-menu a.is-active{color:var(--ds-accent);font-weight:600;border-left-color:var(--ds-accent);background:var(--ds-accent-muted)}
.ds-docs-main{min-width:0}
.ds-doc-block{scroll-margin-top:88px;margin-bottom:var(--ds-space-16)}
.ds-doc-block:last-child{margin-bottom:0}

/* ===== Prose (docs typography) ===== */
.ds-prose{max-width:72ch}
.ds-prose h2{font-family:var(--ds-font-display);font-size:var(--ds-text-h3);font-weight:var(--ds-weight-bold);color:var(--ds-color-fg-strong);letter-spacing:var(--ds-tracking-tight);margin-bottom:var(--ds-space-5);padding-bottom:var(--ds-space-3);border-bottom:1px solid var(--ds-color-border)}
.ds-prose h3{font-family:var(--ds-font-display);font-size:var(--ds-text-h4);font-weight:var(--ds-weight-semibold);color:var(--ds-color-fg-strong);margin:var(--ds-space-10) 0 var(--ds-space-4)}
.ds-prose h4{font-size:var(--ds-text-body-lg);font-weight:var(--ds-weight-semibold);color:var(--ds-color-fg);margin:var(--ds-space-6) 0 var(--ds-space-3)}
.ds-prose p{font-size:var(--ds-text-body);line-height:var(--ds-leading-relaxed);color:var(--ds-color-fg-subtle);margin-bottom:var(--ds-space-5)}
.ds-prose ul,.ds-prose ol{margin:0 0 var(--ds-space-5) var(--ds-space-6);display:flex;flex-direction:column;gap:var(--ds-space-2)}
.ds-prose li{font-size:var(--ds-text-body);line-height:var(--ds-leading-relaxed);color:var(--ds-color-fg-subtle)}
.ds-prose li::marker{color:var(--ds-accent)}
.ds-prose strong{color:var(--ds-color-fg-strong);font-weight:var(--ds-weight-semibold)}
.ds-prose a{color:var(--ds-accent);text-decoration:underline;text-underline-offset:2px}
.ds-prose a:hover{color:var(--ds-accent-hover)}
.ds-prose blockquote{border-left:3px solid var(--ds-accent);padding:var(--ds-space-1) 0 var(--ds-space-1) var(--ds-space-5);margin:0 0 var(--ds-space-5);color:var(--ds-color-muted);font-style:italic}
.ds-prose .ds-code{margin:var(--ds-space-2) 0 var(--ds-space-6)}
.ds-prose figure{margin:0 0 var(--ds-space-6)}

/* ===== Download cards ===== */
.ds-dl-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:var(--ds-space-6)}
.ds-dl-card{display:flex;flex-direction:column;gap:var(--ds-space-4);background:var(--ds-color-surface-raised);border:1px solid var(--ds-color-border);border-radius:var(--ds-radius-2xl);padding:var(--ds-space-7);transition:transform var(--ds-duration-300) var(--ds-ease-out),box-shadow var(--ds-duration-300)}
.ds-dl-card:hover{transform:translateY(-3px);box-shadow:var(--ds-shadow-md)}
.ds-dl-top{display:flex;align-items:flex-start;justify-content:space-between;gap:var(--ds-space-3)}
.ds-dl-ico{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:var(--ds-radius-lg);background:var(--ds-accent-soft);color:var(--ds-accent);flex-shrink:0}
.ds-dl-ico svg{width:22px;height:22px}
.ds-dl-card h3{font-family:var(--ds-font-display);font-size:var(--ds-text-h5);font-weight:var(--ds-weight-semibold);color:var(--ds-color-fg-strong)}
.ds-dl-card p{font-size:var(--ds-text-body-sm);line-height:var(--ds-leading-relaxed);color:var(--ds-color-muted);flex:1}
.ds-dl-meta{font-family:var(--ds-font-mono);font-size:var(--ds-text-caption);color:var(--ds-color-muted)}
.ds-dl-actions{display:flex;flex-wrap:wrap;gap:var(--ds-space-2);margin-top:auto}

/* ===== Rich footer ===== */
.ds-footer-rich{background:var(--ds-color-surface);border-top:1px solid var(--ds-color-border);padding:var(--ds-space-16) 0 var(--ds-space-8)}
.ds-footer-cols{display:grid;grid-template-columns:1.6fr repeat(3,1fr);gap:var(--ds-space-10);margin-bottom:var(--ds-space-12)}
.ds-footer-brand p{font-size:var(--ds-text-body-sm);color:var(--ds-color-muted);line-height:var(--ds-leading-relaxed);margin-top:var(--ds-space-4);max-width:32ch}
.ds-footer-col h4{font-size:var(--ds-text-caption);text-transform:uppercase;letter-spacing:var(--ds-tracking-wider);font-weight:600;color:var(--ds-color-muted);margin-bottom:var(--ds-space-4)}
.ds-footer-links{list-style:none;display:flex;flex-direction:column;gap:var(--ds-space-3)}
.ds-footer-links a{font-size:var(--ds-text-body-sm);color:var(--ds-color-fg-subtle);text-decoration:none;transition:color var(--ds-duration-150)}
.ds-footer-links a:hover{color:var(--ds-accent)}
.ds-footer-bottom{display:flex;flex-wrap:wrap;gap:var(--ds-space-4);justify-content:space-between;align-items:center;padding-top:var(--ds-space-8);border-top:1px solid var(--ds-color-border-subtle);font-size:var(--ds-text-body-sm);color:var(--ds-color-muted)}
.ds-footer-bottom .ds-mono{font-family:var(--ds-font-mono);font-size:var(--ds-text-caption)}

/* ===== Utilities (reduce inline styles) ===== */
.ds-text-center{text-align:center}
.ds-text-muted{color:var(--ds-color-muted)}
.ds-text-accent{color:var(--ds-accent)}
.ds-text-balance{text-wrap:balance}
.ds-text-pretty{text-wrap:pretty}
.ds-mx-auto{margin-left:auto;margin-right:auto}
.ds-measure{max-width:65ch}
.ds-narrow{max-width:760px}
.ds-narrow-sm{max-width:560px}
.ds-stack{display:flex;flex-direction:column;gap:var(--ds-stack-gap,var(--ds-space-4))}
.ds-stack--lg{--ds-stack-gap:var(--ds-space-8)}
.ds-stack--sm{--ds-stack-gap:var(--ds-space-2)}
.ds-cluster{display:flex;flex-wrap:wrap;gap:var(--ds-space-3);align-items:center}
.ds-cluster--center{justify-content:center}
.ds-grid-2{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:var(--ds-space-6)}
.ds-grid-3{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:var(--ds-space-5)}
.ds-divider{height:1px;background:var(--ds-color-border);border:none;margin:var(--ds-space-12) 0}
.ds-mt-0{margin-top:0}.ds-mt-2{margin-top:var(--ds-space-2)}.ds-mt-3{margin-top:var(--ds-space-3)}.ds-mt-4{margin-top:var(--ds-space-4)}.ds-mt-6{margin-top:var(--ds-space-6)}.ds-mt-8{margin-top:var(--ds-space-8)}.ds-mt-16{margin-top:var(--ds-space-16)}.ds-mt-24{margin-top:var(--ds-space-24)}
.ds-mb-0{margin-bottom:0}.ds-mb-2{margin-bottom:var(--ds-space-2)}.ds-mb-3{margin-bottom:var(--ds-space-3)}.ds-mb-4{margin-bottom:var(--ds-space-4)}.ds-mb-5{margin-bottom:var(--ds-space-5)}.ds-mb-10{margin-bottom:var(--ds-space-10)}.ds-mb-20{margin-bottom:var(--ds-space-20)}

/* ===== Responsive (extended) ===== */
@media(max-width:1023px){
  .ds-docs{grid-template-columns:1fr;gap:var(--ds-space-8)}
  .ds-docs-aside{position:static;top:auto;border:1px solid var(--ds-color-border-subtle);border-radius:var(--ds-radius-xl);padding:var(--ds-space-4);background:var(--ds-color-surface)}
  .ds-footer-cols{grid-template-columns:1fr 1fr}
}
@media(max-width:767px){
  .ds-hero-section{padding:var(--ds-space-20) 0 var(--ds-space-16)}
  .ds-hero-title{font-size:var(--ds-text-h1)}
  .ds-hero-lead{font-size:var(--ds-text-body-lg)}
  .ds-stat-num{font-size:var(--ds-text-h1)}
  .ds-footer-cols{grid-template-columns:1fr;gap:var(--ds-space-8)}
  .ds-navbar-cta span{display:none}
}
@media(max-width:639px){
  .ds-section-head h2{font-size:var(--ds-text-h3)}
  .ds-feature-card,.ds-dl-card{padding:var(--ds-space-6)}
}

/* ===== Reduced motion ===== */
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
  .ds-reveal{opacity:1!important;transform:none!important}
  .ds-gradient-text{animation:none}
}

/* ===== Print (extended) ===== */
@media print{
  .ds-hero-actions,.ds-navbar-actions,.ds-footer-rich .ds-footer-bottom,.ds-copy-btn,.ds-code-bar{display:none!important}
  .ds-reveal{opacity:1!important;transform:none!important}
  .ds-code{border:1px solid #ccc;box-shadow:none}
  .ds-code pre{color:#111}
}


/* ===== Extra utilities (v1.1) ===== */
.ds-block{display:block}
.ds-items-center{align-items:center}
.ds-gap-16{gap:var(--ds-space-16)}
a.ds-feature-card{text-decoration:none;color:inherit}
a.ds-feature-card:focus-visible{outline:2px solid var(--ds-accent);outline-offset:3px}
.ds-cta-h2{font-family:var(--ds-font-display);font-size:var(--ds-text-h2);font-weight:var(--ds-weight-bold);color:var(--ds-color-fg-strong);letter-spacing:var(--ds-tracking-tight);line-height:var(--ds-leading-snug)}

.ds-pt-0{padding-top:0}


/* ===== Brand constants (theme-independent) ===== */
:root{--ds-brand-paper:#f7f4ee;--ds-brand-ink:#211f1b}
.ds-brand-preview{display:flex;align-items:center;justify-content:center;padding:var(--ds-space-6);border-radius:var(--ds-radius-lg);border:1px solid var(--ds-color-border-subtle);min-height:104px}
.ds-brand-preview img{max-width:100%;height:auto;max-height:56px}
.ds-brand-preview--paper{background:var(--ds-brand-paper)}
.ds-brand-preview--ink{background:var(--ds-brand-ink)}

.ds-justify-start{justify-content:flex-start}


/* ===== Skip to content (a11y) ===== */
.ds-skip{position:absolute;top:-100%;left:var(--ds-space-4);padding:var(--ds-space-3) var(--ds-space-5);background:var(--ds-accent);color:var(--ds-color-white);border-radius:var(--ds-radius-md);font-size:var(--ds-text-body-sm);font-weight:600;z-index:9999;text-decoration:none;transition:top var(--ds-duration-200)}
.ds-skip:focus{top:var(--ds-space-4)}