/* ==========================================================================
   GEW AI Design System — Dust.tt (@dust-tt/sparkle) Friendly & Tactile Style
   Warm Stone Surfaces • 1px Hairline Borders • Clean Status Dots • Easy & Fun
   ========================================================================== */

:root {
  color-scheme: light;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  /* Dust.tt Warm Stone Daylight Palette */
  --background: #fcfbfa;
  --foreground: #1c1917;
  --text-secondary: #44403c;
  --muted: #f5f3ef;
  --muted-foreground: #78716c;
  --card: #ffffff;
  --card-foreground: #1c1917;
  --sidebar: #f5f3ef;
  --sidebar-foreground: #292524;
  --sidebar-border: #e7e5e4;
  --sidebar-accent: #ece8e1;
  --border: #e7e5e4;
  --border-strong: #d6d3d1;

  /* Single Brand Action + 3 Semantic Status Tokens */
  --primary: #2563eb;
  --primary-foreground: #ffffff;
  --primary-soft: rgba(37, 99, 235, 0.08);
  --success: #10b981;
  --success-soft: rgba(16, 185, 129, 0.10);
  --warning: #f59e0b;
  --warning-soft: rgba(245, 158, 11, 0.12);
  --danger: #e11d48;
  --danger-soft: rgba(225, 29, 72, 0.10);
  --ring: rgba(37, 99, 235, 0.25);

  /* Tactile Geometry */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --shadow-xs: 0 1px 2px rgba(28, 25, 23, 0.04);
  --shadow-sm: 0 2px 6px rgba(28, 25, 23, 0.06);
  --shadow-md: 0 8px 24px rgba(28, 25, 23, 0.08);

  accent-color: var(--primary);
}

html[data-theme="dark"] {
  color-scheme: dark;
  --background: #0c0a09;
  --foreground: #fafaf9;
  --text-secondary: #d6d3d1;
  --muted: #1c1917;
  --muted-foreground: #a8a29e;
  --card: #141210;
  --card-foreground: #fafaf9;
  --sidebar: #110f0d;
  --sidebar-foreground: #e7e5e4;
  --sidebar-border: #292524;
  --sidebar-accent: #1c1917;
  --border: #292524;
  --border-strong: #44403c;

  --primary: #3b82f6;
  --primary-foreground: #ffffff;
  --primary-soft: rgba(59, 130, 246, 0.15);
  --success: #10b981;
  --success-soft: rgba(16, 185, 129, 0.14);
  --warning: #f59e0b;
  --warning-soft: rgba(245, 158, 11, 0.16);
  --danger: #f43f5e;
  --danger-soft: rgba(244, 63, 94, 0.15);
  --ring: rgba(59, 130, 246, 0.35);

  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.5);
  --shadow-md: 0 12px 28px rgba(0, 0, 0, 0.65);
}

/* Optional Neutral Surface Presets */
html[data-neutral="zinc"]:not([data-theme="dark"]) {
  --background: #fafafa;
  --sidebar: #f4f4f5;
  --muted: #f4f4f5;
  --border: #e4e4e7;
  --border-strong: #d4d4d8;
  --sidebar-border: #e4e4e7;
  --sidebar-accent: #e4e4e7;
}

html[data-neutral="slate"]:not([data-theme="dark"]) {
  --background: #f8fafc;
  --sidebar: #f1f5f9;
  --muted: #f1f5f9;
  --border: #e2e8f0;
  --border-strong: #cbd5e1;
  --sidebar-border: #e2e8f0;
  --sidebar-accent: #e2e8f0;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 14px;
  font-family: var(--font-sans);
  background-color: var(--background);
  color: var(--foreground);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--background);
  color: var(--foreground);
  line-height: 1.6;
}

/* ==========================================================================
   1. STICKY HEADER BAR (CLEAN & FRIENDLY)
   ========================================================================== */

.ds-topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  height: 56px;
  background-color: var(--card);
  border-bottom: 1px solid var(--border);
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.ds-brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  color: var(--foreground);
  font-weight: 700;
  font-size: 0.95rem;
}

.ds-brand-mark {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-md);
  background-color: var(--primary);
  color: var(--primary-foreground);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
}

.ds-top-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.ds-nav-pill {
  appearance: none;
  border: none;
  background: transparent;
  color: var(--muted-foreground);
  font-family: inherit;
  font-size: 0.82rem;
  font-weight: 500;
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  text-decoration: none;
  transition: all 0.15s ease;
}

.ds-nav-pill:hover {
  color: var(--foreground);
  background-color: var(--muted);
}

.ds-nav-pill.active {
  color: var(--foreground);
  background-color: var(--muted);
  font-weight: 600;
}

.ds-toolbar-controls {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* ==========================================================================
   2. MAIN CONTAINER & SECTION RHYTHM
   ========================================================================== */

.ds-container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 5rem;
  display: flex;
  flex-direction: column;
  gap: 3.5rem;
}

.ds-hero {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border);
}

.ds-hero-title {
  margin: 0;
  font-size: 1.85rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  color: var(--foreground);
}

.ds-hero-lead {
  margin: 0;
  font-size: 1rem;
  color: var(--muted-foreground);
  max-width: 72ch;
}

.ds-section {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  scroll-margin-top: 76px;
}

.ds-section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.ds-section-title {
  margin: 0;
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.015em;
}

.ds-section-desc {
  margin: 0;
  font-size: 0.88rem;
  color: var(--muted-foreground);
}

/* ==========================================================================
   3. DUST SPARKLE PRIMITIVES (CARDS, BUTTONS, STATUS DOTS, INPUTS)
   ========================================================================== */

.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0.85rem; }

.ds-card {
  background-color: var(--card);
  color: var(--card-foreground);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.15rem;
  box-shadow: var(--shadow-xs);
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.ds-card.interactive:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow-sm);
}

.ds-btn {
  appearance: none;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  padding: 0.42rem 0.85rem;
  font-family: inherit;
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  transition: all 0.15s ease;
}

.ds-btn-primary {
  background-color: var(--primary);
  color: var(--primary-foreground);
}
.ds-btn-primary:hover { opacity: 0.92; }

.ds-btn-secondary {
  background-color: var(--card);
  color: var(--foreground);
  border-color: var(--border);
}
.ds-btn-secondary:hover {
  background-color: var(--muted);
  border-color: var(--border-strong);
}

.ds-btn-ghost {
  background-color: transparent;
  color: var(--muted-foreground);
}
.ds-btn-ghost:hover {
  background-color: var(--muted);
  color: var(--foreground);
}

.ds-btn-sm {
  padding: 0.28rem 0.65rem;
  font-size: 0.76rem;
}

/* Friendly Neutral Badges with 6px Status Dots (No Rainbow Backgrounds) */
.ds-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.38rem;
  padding: 0.16rem 0.55rem;
  border-radius: var(--radius-sm);
  font-size: 0.74rem;
  font-weight: 500;
  background-color: var(--muted);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  white-space: nowrap;
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 999px;
  display: inline-block;
  flex-shrink: 0;
}
.status-dot.primary { background-color: var(--primary); }
.status-dot.success { background-color: var(--success); }
.status-dot.warning { background-color: var(--warning); }
.status-dot.danger { background-color: var(--danger); }
.status-dot.neutral { background-color: var(--muted-foreground); }

/* Segmented Control (Dust Style) */
.segmented-bar {
  display: inline-flex;
  align-items: center;
  padding: 3px;
  border-radius: var(--radius-md);
  background-color: var(--muted);
  border: 1px solid var(--border);
  gap: 2px;
}

.seg-item {
  appearance: none;
  border: none;
  background: transparent;
  color: var(--muted-foreground);
  font-family: inherit;
  font-size: 0.78rem;
  font-weight: 500;
  padding: 0.3rem 0.7rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.12s ease;
}

.seg-item.active {
  background-color: var(--card);
  color: var(--foreground);
  font-weight: 600;
  box-shadow: var(--shadow-xs);
}

/* Swatches */
.swatch-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: var(--card);
}

.swatch-color {
  height: 52px;
  border-bottom: 1px solid var(--border);
}

.swatch-info {
  padding: 0.65rem 0.8rem;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.swatch-name {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 600;
}

.swatch-desc {
  font-size: 0.74rem;
  color: var(--muted-foreground);
}

/* Squircle Avatar */
.avatar-squircle {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-lg);
  background-color: var(--muted);
  border: 1px solid var(--border);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  flex-shrink: 0;
}

/* Inputs */
.ds-input,
.ds-select {
  width: 100%;
  background-color: var(--card);
  color: var(--foreground);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0.45rem 0.7rem;
  font-family: inherit;
  font-size: 0.82rem;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.ds-input:focus,
.ds-select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--ring);
}

.ds-label {
  display: block;
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.3rem;
}

/* ==========================================================================
   4. DUST WORKSPACE SHELL PREVIEW (CLEAN 2-PANE + OPTIONAL DRAWER)
   ========================================================================== */

.workspace-preview {
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-xl);
  background-color: var(--background);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr) 280px;
  height: 480px;
  transition: grid-template-columns 0.2s ease;
}

.workspace-preview.drawer-closed {
  grid-template-columns: 220px minmax(0, 1fr) 0px;
}

.wp-sidebar {
  background-color: var(--sidebar);
  border-right: 1px solid var(--sidebar-border);
  padding: 0.85rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.wp-nav-list {
  list-style: none;
  padding: 0;
  margin: 0.75rem 0 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.wp-nav-btn {
  width: 100%;
  appearance: none;
  border: none;
  background: transparent;
  color: var(--sidebar-foreground);
  font-family: inherit;
  font-size: 0.8rem;
  padding: 0.42rem 0.6rem;
  border-radius: var(--radius-md);
  text-align: left;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.wp-nav-btn:hover { background-color: var(--sidebar-accent); }
.wp-nav-btn.active {
  background-color: var(--card);
  font-weight: 600;
  box-shadow: var(--shadow-xs);
}

.wp-stage {
  display: flex;
  flex-direction: column;
  background-color: var(--background);
  min-width: 0;
}

.wp-header {
  height: 48px;
  padding: 0 1rem;
  border-bottom: 1px solid var(--border);
  background-color: var(--card);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.wp-messages {
  flex: 1;
  padding: 1.15rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.wp-composer {
  padding: 0.75rem 1rem;
  border-top: 1px solid var(--border);
  background-color: var(--background);
}

.composer-box {
  background-color: var(--card);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  padding: 0.6rem 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.composer-box:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--ring);
}

.wp-drawer {
  background-color: var(--sidebar);
  border-left: 1px solid var(--sidebar-border);
  padding: 0.9rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.workspace-preview.drawer-closed .wp-drawer {
  padding: 0;
  border-left: none;
  overflow: hidden;
}

/* ==========================================================================
   5. SPARKLE DISCLOSURE (<details>) & DO / DON'T COMPARISON
   ========================================================================== */

details.sparkle-step {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background-color: var(--muted);
  font-size: 0.78rem;
  overflow: hidden;
}

details.sparkle-step summary {
  padding: 0.42rem 0.7rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-weight: 500;
  color: var(--text-secondary);
  list-style: none;
}
details.sparkle-step summary::-webkit-details-marker { display: none; }

.sparkle-step-body {
  padding: 0.55rem 0.7rem;
  background-color: var(--card);
  border-top: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--muted-foreground);
}

.compare-card-do {
  border-top: 3px solid var(--success);
}

.compare-card-dont {
  border-top: 3px solid var(--danger);
}

/* Dark Code Block with mandatory re-specified inherited properties */
pre.code-export-box {
  color-scheme: dark;
  margin: 0;
  padding: 1rem;
  border-radius: var(--radius-lg);
  background-color: #141210;
  color: #fafaf9;
  accent-color: var(--primary);
  border: 1px solid #292524;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  overflow-x: auto;
  line-height: 1.55;
}

/* Provider Selector Grid */
.provider-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.5rem;
}

.provider-btn {
  appearance: none;
  background-color: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0.65rem;
  font-family: inherit;
  text-align: left;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  transition: all 0.15s ease;
}

.provider-btn:hover {
  background-color: var(--muted);
}

.provider-btn.active {
  border-color: var(--primary);
  background-color: var(--primary-soft);
}

@media (max-width: 900px) {
  .grid-2, .grid-3, .grid-4, .provider-grid { grid-template-columns: 1fr; }
  .workspace-preview { grid-template-columns: 1fr; height: auto; }
  .ds-top-nav { display: none; }
}