/* ==============================================================================
 * dev.ecs0.net Unified Design System & Token Framework (ecs-unified.css v2.0.0)
 * 100% Self-Contained — Zero External Font, CDN, or Network Dependencies
 * 4 Dynamic Color Profiles x 2 Modes (Light / Dark) + System Auto-Follow
 * Desktop Collapsible Siderail + Mobile Slide-Out Drawer (375px Verified)
 * ============================================================================== */

/* ------------------------------------------------------------------------------
 * 1. CSS Reset & Foundational Layout
 * ------------------------------------------------------------------------------ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Inter", "Segoe UI", Roboto, system-ui, sans-serif;
  color-scheme: light dark;
}

body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--bg);
  color: var(--text);
  background-image: var(--body-img, none);
  background-size: var(--body-size, auto);
  background-attachment: fixed;
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.55;
  letter-spacing: -0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  width: 100%;
  max-width: 100vw;
}

/* ------------------------------------------------------------------------------
 * 2. Typography & Native Font Stacks (Zero External Requests)
 * ------------------------------------------------------------------------------ */
:root {
  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Inter", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "JetBrains Mono Nerd Font", "JetBrains Mono", "SF Mono", Menlo, Consolas, "Liberation Mono", ui-monospace, monospace;

  --radius-xs: 2px;
  --radius-sm: 4px;
  --radius: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  --sidebar-w: 14rem;          /* 224px expanded desktop */
  --sidebar-collapsed-w: 3.5rem; /* 56px collapsed desktop */
  --sidebar-mobile-w: 280px;   /* off-canvas mobile */
  --header-h: 56px;
  --transition-speed: 0.2s;

  /* Standard Contract Aliases */
  --bg-primary: var(--bg);
  --bg-secondary: var(--surface-elevated);
  --bg-surface: var(--surface);
  --card-border: var(--border);
  --fg-primary: var(--text);
  --fg-muted: var(--text-muted);
  --fg-accent: var(--accent);
}

/* ------------------------------------------------------------------------------
 * 3. Color Profile 1: East Coast Slate (Default)
 * ------------------------------------------------------------------------------ */
:root,
:root[data-theme-profile="east-coast-slate"],
:root[data-profile="slate"],
:root[data-profile="east-coast-slate"],
[data-profile="slate"],
[data-profile="east-coast-slate"],
:root[data-palette="slate"],
:root[data-style="slate"],
html[data-palette="slate"] {
  /* HSL Triplet Tokens (Light Mode Default) */
  --background: 220 14% 97%;
  --surface: 0 0% 100%;
  --overlay: 220 14% 95%;
  --border: 220 13% 91%;
  --foreground: 222 47% 11%;
  --muted: 215 16% 47%;
  --brand: 201 96% 32%;
  --brand-fg: 0 0% 100%;
  --brand-text: 201 96% 32%;
  --up: 152 80% 25%;
  --down: 350 75% 45%;

  /* Direct Color Tokens for Legacy & Drop-in Compatibility */
  --bg: #f5f6f8;
  --surface: #ffffff;
  --surface-elevated: #eef1f6;
  --surface-hover: #e2e8f0;
  --border: #e5e7eb;
  --border-focus: #0284c7;
  --card-border: #e5e7eb;
  --text: #111827;
  --text-muted: #475569;
  --text-faint: #94a3b8;
  --accent: #0284c7;
  --accent-glow: rgba(2, 132, 199, 0.12);
  --success: #059669;
  --warning: #d97706;
  --danger: #e11d48;
  --code-bg: #eef2f6;

  --body-img: none;
}

/* East Coast Slate Dark Mode */
:root.dark,
:root[data-theme="dark"],
:root[data-theme-profile="east-coast-slate"].dark,
:root[data-theme-profile="east-coast-slate"][data-theme="dark"],
:root[data-profile="slate"].dark,
:root[data-profile="slate"][data-theme="dark"],
[data-theme="dark"][data-profile="slate"],
[data-profile="slate"].dark,
html[data-palette="slate"][data-theme="dark"],
@media (prefers-color-scheme: dark) {
  :root:not(.light):not([data-theme="light"]),
  :root[data-theme-profile="east-coast-slate"]:not(.light):not([data-theme="light"]),
  :root[data-profile="slate"]:not(.light):not([data-theme="light"]),
  html[data-palette="slate"]:not(.light):not([data-theme="light"]) {
    --background: 222 47% 5%;
    --surface: 222 35% 9%;
    --overlay: 222 25% 13%;
    --border: 223 20% 17%;
    --foreground: 218 27% 91%;
    --muted: 215 16% 57%;
    --brand: 199 89% 48%;
    --brand-fg: 222 47% 5%;
    --brand-text: 199 89% 48%;
    --up: 153 60% 53%;
    --down: 350 90% 68%;

    --bg: #0a0b0e;
    --surface: #12141a;
    --surface-elevated: #181b24;
    --surface-hover: #1e2330;
    --border: #232734;
    --border-focus: #38bdf8;
    --card-border: #232734;
    --text: #e5e7eb;
    --text-muted: #94a3b8;
    --text-faint: #64748b;
    --accent: #38bdf8;
    --accent-glow: rgba(56, 189, 248, 0.15);
    --success: #34d399;
    --warning: #fbbf24;
    --danger: #fb7185;
    --code-bg: #0d0f15;

    --body-img: radial-gradient(circle at 50% -20%, rgba(56, 189, 248, 0.08), transparent 70%);
  }
}

/* ------------------------------------------------------------------------------
 * 4. Color Profile 2: FrenzyCap Terminal
 * ------------------------------------------------------------------------------ */
:root[data-theme-profile="frenzycap-terminal"],
:root[data-theme-profile="terminal"],
:root[data-profile="terminal"],
:root[data-profile="frenzycap-terminal"],
[data-profile="terminal"],
[data-profile="frenzycap-terminal"],
:root[data-palette="terminal"],
:root[data-style="terminal"],
html[data-palette="terminal"] {
  --background: 42 38% 94.5%;
  --surface: 45 45% 98%;
  --overlay: 42 30% 90.5%;
  --border: 40 20% 81%;
  --foreground: 222 50% 14%;
  --muted: 222 16% 36%;
  --brand: 36 95% 46%;
  --brand-fg: 30 100% 8%;
  --brand-text: 30 90% 29%;
  --up: 188 90% 25%;
  --down: 350 75% 41%;

  --bg: #f7f3ec;
  --surface: #fcfbf7;
  --surface-elevated: #ebe5da;
  --surface-hover: #dfd7cb;
  --border: #d4ccc0;
  --border-focus: #e47e06;
  --card-border: #d4ccc0;
  --text: #121934;
  --text-muted: #4a5568;
  --text-faint: #718096;
  --accent: #e47e06;
  --accent-glow: rgba(228, 126, 6, 0.16);
  --success: #0d7a5f;
  --warning: #b45309;
  --danger: #b91c1c;
  --code-bg: #efe9de;

  --radius-sm: 1px;
  --radius: 2px;
  --radius-lg: 3px;
  --body-img: none;
}

/* FrenzyCap Terminal Dark Mode */
:root[data-theme-profile="frenzycap-terminal"].dark,
:root[data-theme-profile="terminal"].dark,
:root[data-theme-profile="frenzycap-terminal"][data-theme="dark"],
:root[data-theme-profile="terminal"][data-theme="dark"],
:root[data-profile="terminal"].dark,
:root[data-profile="terminal"][data-theme="dark"],
[data-theme="dark"][data-profile="terminal"],
[data-profile="terminal"].dark,
html[data-palette="terminal"][data-theme="dark"],
@media (prefers-color-scheme: dark) {
  :root[data-theme-profile="frenzycap-terminal"]:not(.light):not([data-theme="light"]),
  :root[data-theme-profile="terminal"]:not(.light):not([data-theme="light"]),
  :root[data-profile="terminal"]:not(.light):not([data-theme="light"]),
  html[data-palette="terminal"]:not(.light):not([data-theme="light"]) {
    --background: 226 52% 6%;
    --surface: 225 45% 9%;
    --overlay: 225 38% 13%;
    --border: 224 35% 18%;
    --foreground: 220 60% 90%;
    --muted: 222 24% 66%;
    --brand: 40 100% 50%;
    --brand-fg: 30 100% 8%;
    --brand-text: 40 100% 58%;
    --up: 187 85% 53%;
    --down: 350 95% 68%;

    --bg: #070a18;
    --surface: #0d1122;
    --surface-elevated: #14192f;
    --surface-hover: #1a223f;
    --border: #1e2540;
    --border-focus: #ffaa00;
    --card-border: #1e2540;
    --text: #d5e0f5;
    --text-muted: #94a1bc;
    --text-faint: #627191;
    --accent: #ffaa00;
    --accent-glow: rgba(255, 170, 0, 0.18);
    --success: #22e4ff;
    --warning: #ffaa00;
    --danger: #ff5c77;
    --code-bg: #050713;

    --radius-sm: 1px;
    --radius: 2px;
    --radius-lg: 3px;
    --body-img: repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.015) 0 1px, transparent 1px 3px);
  }
}

/* ------------------------------------------------------------------------------
 * 5. Color Profile 3: Supabase / Shadcn
 * ------------------------------------------------------------------------------ */
:root[data-theme-profile="supabase-shadcn"],
:root[data-theme-profile="supabase"],
:root[data-profile="supabase"],
:root[data-profile="supabase-shadcn"],
[data-profile="supabase"],
[data-profile="supabase-shadcn"],
:root[data-palette="supabase"],
:root[data-style="supabase"],
html[data-palette="supabase"] {
  --background: 0 0% 98.8%;
  --surface: 0 0% 100%;
  --overlay: 0 0% 95.3%;
  --border: 0 0% 88%;
  --foreground: 0 0% 9%;
  --muted: 0 0% 38%;
  --brand: 153 60% 53%;
  --brand-fg: 153 70% 10%;
  --brand-text: 155 85% 24%;
  --up: 152 80% 25%;
  --down: 0 70% 45%;

  --bg: #fcfcfc;
  --surface: #ffffff;
  --surface-elevated: #f3f3f3;
  --surface-hover: #e5e5e5;
  --border: #e0e0e0;
  --border-focus: #10b981;
  --card-border: #e0e0e0;
  --text: #171717;
  --text-muted: #616161;
  --text-faint: #8e8e8e;
  --accent: #10b981;
  --accent-glow: rgba(16, 185, 129, 0.16);
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --code-bg: #f4f4f5;

  --radius-sm: 4px;
  --radius: 6px;
  --radius-lg: 8px;
  --body-img: none;
}

/* Supabase / Shadcn Dark Mode */
:root[data-theme-profile="supabase-shadcn"].dark,
:root[data-theme-profile="supabase"].dark,
:root[data-theme-profile="supabase-shadcn"][data-theme="dark"],
:root[data-theme-profile="supabase"][data-theme="dark"],
:root[data-profile="supabase"].dark,
:root[data-profile="supabase"][data-theme="dark"],
[data-theme="dark"][data-profile="supabase"],
[data-profile="supabase"].dark,
html[data-palette="supabase"][data-theme="dark"],
@media (prefers-color-scheme: dark) {
  :root[data-theme-profile="supabase-shadcn"]:not(.light):not([data-theme="light"]),
  :root[data-theme-profile="supabase"]:not(.light):not([data-theme="light"]),
  :root[data-profile="supabase"]:not(.light):not([data-theme="light"]),
  html[data-palette="supabase"]:not(.light):not([data-theme="light"]) {
    --background: 0 0% 9%;
    --surface: 0 0% 11%;
    --overlay: 0 0% 15%;
    --border: 0 0% 18%;
    --foreground: 0 0% 93%;
    --muted: 0 0% 63%;
    --brand: 153 60% 53%;
    --brand-fg: 153 70% 8%;
    --brand-text: 153 60% 53%;
    --up: 153 60% 53%;
    --down: 0 91% 71%;

    --bg: #171717;
    --surface: #1c1c1c;
    --surface-elevated: #262626;
    --surface-hover: #303030;
    --border: #2e2e2e;
    --border-focus: #3ecf8e;
    --card-border: #2e2e2e;
    --text: #ededed;
    --text-muted: #a1a1a1;
    --text-faint: #717171;
    --accent: #3ecf8e;
    --accent-glow: rgba(62, 207, 142, 0.16);
    --success: #3ecf8e;
    --warning: #fbbf24;
    --danger: #f87171;
    --code-bg: #111111;

    --radius-sm: 4px;
    --radius: 6px;
    --radius-lg: 8px;
    --body-img: none;
  }
}

/* ------------------------------------------------------------------------------
 * 6. Color Profile 4: RTTy Spectrum
 * ------------------------------------------------------------------------------ */
:root[data-theme-profile="rtty-spectrum"],
:root[data-theme-profile="spectrum"],
:root[data-profile="spectrum"],
:root[data-profile="rtty-spectrum"],
[data-profile="spectrum"],
[data-profile="rtty-spectrum"],
:root[data-palette="rtty"],
:root[data-palette="spectrum"],
:root[data-style="spectrum"],
html[data-palette="rtty"],
html[data-palette="spectrum"] {
  --background: 228 25% 97%;
  --surface: 0 0% 100%;
  --overlay: 228 20% 93.5%;
  --border: 228 16% 86%;
  --foreground: 232 45% 10%;
  --muted: 228 14% 42%;
  --brand: 188 95% 35%;
  --brand-fg: 0 0% 100%;
  --brand-text: 188 95% 30%;
  --up: 155 70% 27%;
  --down: 355 70% 46%;

  --bg: #f4f6fb;
  --surface: #ffffff;
  --surface-elevated: #edf0f7;
  --surface-hover: #e0e6f3;
  --border: #d5dbe9;
  --border-focus: #058296;
  --card-border: #d5dbe9;
  --text: #0e1324;
  --text-muted: #5e677c;
  --text-faint: #8792a8;
  --accent: #058296;
  --accent-glow: rgba(5, 130, 150, 0.16);
  --success: #059669;
  --warning: #d97706;
  --danger: #e11d48;
  --code-bg: #e9edf6;

  --radius-sm: 5px;
  --radius: 8px;
  --radius-lg: 12px;
  --body-img: radial-gradient(circle at 1px 1px, rgba(0, 0, 0, 0.04) 1px, transparent 0);
  --body-size: 22px 22px;
}

/* RTTy Spectrum Dark Mode */
:root[data-theme-profile="rtty-spectrum"].dark,
:root[data-theme-profile="spectrum"].dark,
:root[data-theme-profile="rtty-spectrum"][data-theme="dark"],
:root[data-theme-profile="spectrum"][data-theme="dark"],
:root[data-profile="spectrum"].dark,
:root[data-profile="spectrum"][data-theme="dark"],
[data-theme="dark"][data-profile="spectrum"],
[data-profile="spectrum"].dark,
html[data-palette="rtty"][data-theme="dark"],
html[data-palette="spectrum"][data-theme="dark"],
@media (prefers-color-scheme: dark) {
  :root[data-theme-profile="rtty-spectrum"]:not(.light):not([data-theme="light"]),
  :root[data-theme-profile="spectrum"]:not(.light):not([data-theme="light"]),
  :root[data-profile="spectrum"]:not(.light):not([data-theme="light"]),
  html[data-palette="rtty"]:not(.light):not([data-theme="light"]),
  html[data-palette="spectrum"]:not(.light):not([data-theme="light"]) {
    --background: 240 18% 4%;
    --surface: 235 25% 7%;
    --overlay: 235 22% 11%;
    --border: 235 20% 16%;
    --foreground: 225 40% 95%;
    --muted: 225 18% 65%;
    --brand: 178 85% 55%;
    --brand-fg: 240 18% 4%;
    --brand-text: 178 85% 55%;
    --up: 153 60% 53%;
    --down: 350 90% 68%;

    --bg: #070709;
    --surface: #0e111d;
    --surface-elevated: #161a2c;
    --surface-hover: #1f253e;
    --border: #21263c;
    --border-focus: #2be6e0;
    --card-border: #21263c;
    --text: #edf1fc;
    --text-muted: #99a4c2;
    --text-faint: #647091;
    --accent: #2be6e0;
    --accent-glow: rgba(43, 230, 224, 0.2);
    --success: #22c55e;
    --warning: #f59e0b;
    --danger: #f43f5e;
    --code-bg: #040406;

    --radius-sm: 5px;
    --radius: 8px;
    --radius-lg: 12px;
    --body-img: radial-gradient(circle at 1px 1px, rgba(255, 255, 255, 0.05) 1px, transparent 0);
    --body-size: 22px 22px;
  }
}

/* ------------------------------------------------------------------------------
 * 7. Layout Shell & Main Container
 * ------------------------------------------------------------------------------ */
.app-shell {
  display: flex;
  min-height: 100vh;
  width: 100%;
  max-width: 100vw;
  overflow-x: hidden;
  position: relative;
}

.main-content {
  flex: 1;
  min-width: 0;
  max-width: 100%;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

.content-body {
  flex: 1;
  padding: 24px 20px 64px;
  max-width: 1280px;
  width: 100%;
  margin: 0 auto;
}

/* ------------------------------------------------------------------------------
 * 8. Top Navigation Bar (.bar) & Segmented Controls (.seg)
 * ------------------------------------------------------------------------------ */
.bar,
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 16px;
  height: var(--header-h);
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.bar-left,
.bar-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

.crumb {
  font-size: 13px;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  display: flex;
  align-items: center;
  gap: 6px;
}

.crumb a {
  color: var(--brand-text);
  text-decoration: none;
  font-weight: 500;
}

.crumb a:hover {
  text-decoration: underline;
}

.crumb-sep {
  color: var(--text-faint);
  opacity: 0.6;
}

/* Segmented Theme / Profile Switcher */
.seg {
  display: inline-flex;
  align-items: center;
  background: var(--surface-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2px;
  gap: 2px;
  flex: none;
}

.seg button,
.seg .seg-btn {
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 500;
  padding: 4px 9px;
  border: 0;
  background: transparent;
  color: var(--text-muted);
  border-radius: calc(var(--radius) - 2px);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  transition: all 0.15s ease;
  white-space: nowrap;
}

.seg button:hover,
.seg .seg-btn:hover {
  color: var(--text);
}

.seg button[aria-pressed="true"],
.seg .seg-btn.active {
  background: var(--surface);
  color: var(--text);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.08);
  font-weight: 600;
}

/* ------------------------------------------------------------------------------
 * 9. Responsive Siderail Component (.siderail / .sb)
 * ------------------------------------------------------------------------------ */
.siderail,
.sb {
  width: var(--sidebar-w);
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
  z-index: 100;
  flex-shrink: 0;
  transition: width var(--transition-speed) cubic-bezier(0.16, 1, 0.3, 1);
  overflow: hidden;
}

.siderail-header {
  padding: 14px 16px;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.brand-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  overflow: hidden;
  white-space: nowrap;
  text-decoration: none;
  color: var(--text);
}

.brand-icon {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  background: var(--accent-glow);
  border: 1px solid var(--border-focus);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-weight: 700;
  font-family: var(--font-mono);
  font-size: 13px;
  flex-shrink: 0;
}

.brand-title {
  font-weight: 600;
  font-size: 14px;
  letter-spacing: -0.01em;
  color: var(--text);
  transition: opacity 0.15s ease;
}

.collapse-btn,
.mobile-close-btn {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-muted);
  border-radius: var(--radius-sm);
  padding: 4px 6px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}

.collapse-btn:hover,
.mobile-close-btn:hover {
  color: var(--text);
  border-color: var(--accent);
  background: var(--surface-elevated);
}

.siderail-nav {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 12px 8px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.nav-section {
  padding: 10px 8px 4px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-faint);
  white-space: nowrap;
}

.nav-item a,
.siderail-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 10px;
  border-radius: var(--radius);
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  font-size: 13px;
  transition: background 0.15s, color 0.15s;
  white-space: nowrap;
}

.nav-item a:hover,
.siderail-link:hover {
  background: var(--surface-hover);
  color: var(--text);
}

.nav-item a.active,
.siderail-link.active {
  background: var(--accent-glow);
  color: var(--accent);
  font-weight: 600;
}

.nav-icon {
  font-family: var(--font-mono);
  font-size: 14px;
  width: 18px;
  text-align: center;
  flex-shrink: 0;
}

.nav-badge {
  margin-left: auto;
  font-size: 11px;
  font-family: var(--font-mono);
  padding: 1px 6px;
  border-radius: 999px;
  background: var(--surface-elevated);
  border: 1px solid var(--border);
  color: var(--text-muted);
}

.siderail-footer {
  padding: 12px 14px;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}

/* Desktop Collapsed Siderail State */
.siderail.collapsed,
.sb.collapsed,
html[data-sidebar="collapsed"] .siderail,
html[data-sidebar="collapsed"] .sb {
  width: 56px;
  width: var(--sidebar-collapsed-w);
}

.siderail.collapsed .brand-title,
.siderail.collapsed .nav-section,
.siderail.collapsed .nav-text,
.siderail.collapsed .nav-badge,
.siderail.collapsed .siderail-footer,
.sb.collapsed .sb-label,
html[data-sidebar="collapsed"] .siderail .brand-title,
html[data-sidebar="collapsed"] .siderail .nav-section,
html[data-sidebar="collapsed"] .siderail .nav-text,
html[data-sidebar="collapsed"] .siderail .nav-badge,
html[data-sidebar="collapsed"] .siderail .siderail-footer,
html[data-sidebar="collapsed"] .sb .sb-label {
  display: none !important;
}

.siderail.collapsed .brand-wrap,
html[data-sidebar="collapsed"] .siderail .brand-wrap {
  justify-content: center;
}

.siderail.collapsed .nav-item a,
html[data-sidebar="collapsed"] .siderail .nav-item a {
  justify-content: center;
  padding: 8px 0;
}

/* Siderail Backdrop (for mobile) */
.siderail-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 999;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.siderail-backdrop.active,
html[data-sidebar="mobile-open"] .siderail-backdrop {
  opacity: 1;
  pointer-events: auto;
}

/* Mobile Siderail Drawer (<900px) */
@media (max-width: 900px) {
  .siderail,
  .sb {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    height: 100vh;
    width: var(--sidebar-mobile-w);
    max-width: 85vw;
    z-index: 1000;
    transform: translateX(-100%);
    box-shadow: none;
    transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  }

  .siderail.mobile-open,
  .sb.mobile-open,
  html[data-sidebar="mobile-open"] .siderail,
  html[data-sidebar="mobile-open"] .sb {
    transform: translateX(0);
    box-shadow: 0 0 40px rgba(0, 0, 0, 0.5);
  }

  .siderail.collapsed,
  html[data-sidebar="collapsed"] .siderail {
    width: var(--sidebar-mobile-w) !important;
  }

  .siderail.collapsed .brand-title,
  .siderail.collapsed .nav-section,
  .siderail.collapsed .nav-text,
  .siderail.collapsed .nav-badge,
  .siderail.collapsed .siderail-footer {
    display: flex !important;
  }

  .collapse-btn {
    display: none;
  }
}

/* Mobile Hamburger Toggle Button */
.mobile-nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: var(--radius-sm);
  padding: 6px 8px;
  cursor: pointer;
  font-size: 14px;
}

@media (max-width: 900px) {
  .mobile-nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }
}

/* ------------------------------------------------------------------------------
 * 10. Airtable Chips & Pills Component (.chip / .pill)
 * ------------------------------------------------------------------------------ */
/* Square Category / Domain Chips */
.chip,
.chip-square {
  --h: var(--accent);
  --chip-bg-a: 12%;
  --chip-border-a: 30%;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 500;
  line-height: 1;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--h) var(--chip-bg-a), transparent);
  border: 1px solid color-mix(in srgb, var(--h) var(--chip-border-a), transparent);
  color: var(--h);
  text-decoration: none;
  white-space: nowrap;
  user-select: none;
  transition: transform 0.12s, box-shadow 0.15s, background 0.15s;
}

a.chip:hover,
button.chip:hover {
  transform: translateY(-1px);
  background: color-mix(in srgb, var(--h) 20%, transparent);
  box-shadow: 0 0 10px color-mix(in srgb, var(--h) 30%, transparent);
}

.chip.sm {
  padding: 2px 6px;
  font-size: 11px;
  gap: 4px;
  border-radius: 3px;
}

.chip.xl {
  padding: 8px 12px;
  font-size: 14px;
  gap: 8px;
  border-radius: 6px;
}

/* Pre-defined Hue Swatches for Chips */
.h-cyan { --h: #0284c7; }
.h-mag { --h: #c026d3; }
.h-lime { --h: #4d7c0f; }
.h-amber { --h: #b45309; }
.h-violet { --h: #6d28d9; }
.h-rose { --h: #e11d48; }
.h-blue { --h: #2563eb; }
.h-teal { --h: #0f766e; }

:root.dark .h-cyan,
@media (prefers-color-scheme: dark) {
  :root:not(.light) .h-cyan { --h: #22e4ff; }
  :root:not(.light) .h-mag { --h: #ff4fd8; }
  :root:not(.light) .h-lime { --h: #a3ff3c; }
  :root:not(.light) .h-amber { --h: #ffb020; }
  :root:not(.light) .h-violet { --h: #a78bfa; }
  :root:not(.light) .h-rose { --h: #ff4d6d; }
  :root:not(.light) .h-blue { --h: #4f8bff; }
  :root:not(.light) .h-teal { --h: #2dd4bf; }
}

/* Rounded Lifecycle Pills (.pill) */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11.5px;
  font-weight: 500;
  line-height: 1;
  padding: 4px 10px;
  border-radius: 9999px;
  border: 1px solid var(--border);
  background: var(--surface-elevated);
  color: var(--text);
  white-space: nowrap;
}

.pill-dot {
  width: 6px;
  height: 6px;
  border-radius: var(--radius-full);
  background: currentColor;
  flex-shrink: 0;
}

/* 8 Standard Lifecycle States */
.pill-working {
  background: color-mix(in srgb, #10b981 12%, transparent);
  border-color: color-mix(in srgb, #10b981 30%, transparent);
  color: #065f46;
}
:root.dark .pill-working,
@media (prefers-color-scheme: dark) {
  :root:not(.light) .pill-working {
    color: #34d399;
  }
}

.pill-qualified {
  background: color-mix(in srgb, #06b6d4 12%, transparent);
  border-color: color-mix(in srgb, #06b6d4 30%, transparent);
  color: #0e7490;
}
:root.dark .pill-qualified,
@media (prefers-color-scheme: dark) {
  :root:not(.light) .pill-qualified {
    color: #22d3ee;
  }
}

.pill-partial {
  background: color-mix(in srgb, #f59e0b 12%, transparent);
  border-color: color-mix(in srgb, #f59e0b 30%, transparent);
  color: #92400e;
}
:root.dark .pill-partial,
@media (prefers-color-scheme: dark) {
  :root:not(.light) .pill-partial {
    color: #fbbf24;
  }
}

.pill-foundation {
  background: color-mix(in srgb, #3b82f6 12%, transparent);
  border-color: color-mix(in srgb, #3b82f6 30%, transparent);
  color: #1e40af;
}
:root.dark .pill-foundation,
@media (prefers-color-scheme: dark) {
  :root:not(.light) .pill-foundation {
    color: #60a5fa;
  }
}

.pill-documented {
  background: color-mix(in srgb, #8b5cf6 12%, transparent);
  border-color: color-mix(in srgb, #8b5cf6 30%, transparent);
  color: #5b21b6;
}
:root.dark .pill-documented,
@media (prefers-color-scheme: dark) {
  :root:not(.light) .pill-documented {
    color: #a78bfa;
  }
}

.pill-planned {
  background: color-mix(in srgb, #6b7280 12%, transparent);
  border-color: color-mix(in srgb, #6b7280 30%, transparent);
  color: #374151;
}
:root.dark .pill-planned,
@media (prefers-color-scheme: dark) {
  :root:not(.light) .pill-planned {
    color: #9ca3af;
  }
}

.pill-blocked {
  background: color-mix(in srgb, #ef4444 12%, transparent);
  border-color: color-mix(in srgb, #ef4444 30%, transparent);
  color: #991b1b;
}
:root.dark .pill-blocked,
@media (prefers-color-scheme: dark) {
  :root:not(.light) .pill-blocked {
    color: #f87171;
  }
}

.pill-archived {
  background: color-mix(in srgb, #4b5563 12%, transparent);
  border-color: color-mix(in srgb, #4b5563 30%, transparent);
  color: #4b5563;
}
:root.dark .pill-archived,
@media (prefers-color-scheme: dark) {
  :root:not(.light) .pill-archived {
    color: #9ca3af;
  }
}

/* Lifecycle State Aliases (active, maintenance, archived) */
.pill-active, .status-active {
  background: color-mix(in srgb, #10b981 12%, transparent);
  border-color: color-mix(in srgb, #10b981 30%, transparent);
  color: #065f46;
}
:root.dark .pill-active, :root.dark .status-active,
@media (prefers-color-scheme: dark) {
  :root:not(.light) .pill-active, :root:not(.light) .status-active {
    color: #34d399;
  }
}

.pill-maintenance, .status-maintenance {
  background: color-mix(in srgb, #f59e0b 12%, transparent);
  border-color: color-mix(in srgb, #f59e0b 30%, transparent);
  color: #92400e;
}
:root.dark .pill-maintenance, :root.dark .status-maintenance,
@media (prefers-color-scheme: dark) {
  :root:not(.light) .pill-maintenance, :root:not(.light) .status-maintenance {
    color: #fbbf24;
  }
}

/* ------------------------------------------------------------------------------
 * 11. Syslog Activity Stream (.syslog-stream)
 * ------------------------------------------------------------------------------ */
.syslog-stream {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
  overflow: hidden;
  font-family: var(--font-mono), monospace;
}

.syslog-row {
  display: flex;
  flex-direction: column;
  border-bottom: 1px solid var(--border);
  transition: background 0.15s ease;
}

.syslog-row:last-child {
  border-bottom: 0;
}

.syslog-row:hover {
  background: var(--surface-elevated);
}

.syslog-line {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  cursor: pointer;
  user-select: none;
  font-size: 12.5px;
  min-width: 0;
}

.syslog-time {
  color: var(--text-muted);
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
  font-size: 11.5px;
  flex-shrink: 0;
}

.syslog-host,
.syslog-agent {
  padding: 1px 5px;
  border-radius: var(--radius-xs);
  background: var(--surface-elevated);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 11px;
  white-space: nowrap;
  flex-shrink: 0;
}

.syslog-level {
  font-size: 10.5px;
  font-weight: 700;
  padding: 1px 6px;
  border-radius: var(--radius-xs);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  white-space: nowrap;
  flex-shrink: 0;
}

.level-info {
  background: rgba(56, 189, 248, 0.12);
  color: #0284c7;
  border: 1px solid rgba(56, 189, 248, 0.3);
}
:root.dark .level-info,
@media (prefers-color-scheme: dark) {
  :root:not(.light) .level-info { color: #38bdf8; }
}

.level-pass {
  background: rgba(16, 185, 129, 0.12);
  color: #059669;
  border: 1px solid rgba(16, 185, 129, 0.3);
}
:root.dark .level-pass,
@media (prefers-color-scheme: dark) {
  :root:not(.light) .level-pass { color: #34d399; }
}

.level-warn {
  background: rgba(245, 158, 11, 0.12);
  color: #d97706;
  border: 1px solid rgba(245, 158, 11, 0.3);
}
:root.dark .level-warn,
@media (prefers-color-scheme: dark) {
  :root:not(.light) .level-warn { color: #fbbf24; }
}

.level-error {
  background: rgba(239, 68, 68, 0.12);
  color: #dc2626;
  border: 1px solid rgba(239, 68, 68, 0.3);
}
:root.dark .level-error,
@media (prefers-color-scheme: dark) {
  :root:not(.light) .level-error { color: #fb7185; }
}

.syslog-msg {
  flex: 1;
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--text);
  font-family: var(--font-mono);
}

.syslog-chevron {
  color: var(--text-faint);
  font-size: 10px;
  transition: transform 0.2s ease;
  flex-shrink: 0;
  margin-left: auto;
}

.syslog-row.expanded .syslog-chevron {
  transform: rotate(90deg);
  color: var(--accent);
}

.syslog-details {
  display: none;
  padding: 10px 14px 14px;
  background: var(--code-bg);
  border-top: 1px dashed var(--border);
  font-size: 12px;
  line-height: 1.5;
  color: var(--text);
  overflow-x: auto;
}

.syslog-row.expanded .syslog-details {
  display: block;
}

.syslog-details pre {
  margin: 0;
  padding: 0;
  background: transparent;
  border: 0;
  font-family: var(--font-mono);
  white-space: pre;
}

/* ------------------------------------------------------------------------------
 * 12. Master Project Table & Accordion Row
 * ------------------------------------------------------------------------------ */
.table-container {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 16px 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
}

.project-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
  text-align: left;
}

.project-table th {
  padding: 12px 14px;
  background: var(--surface-elevated);
  color: var(--text-muted);
  font-size: 11.5px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

.project-row {
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: background 0.15s ease;
}

.project-row:hover {
  background: var(--surface-elevated);
}

.project-row.expanded {
  background: var(--surface-hover);
}

.project-row td {
  padding: 12px 14px;
  vertical-align: middle;
}

.project-cell-name {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
  color: var(--text);
}

.project-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: var(--surface-elevated);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
  flex-shrink: 0;
}

.project-title {
  color: var(--text);
  font-size: 14px;
}

.drawer-row {
  display: none;
  background: var(--surface-elevated);
  border-bottom: 1px solid var(--border);
}

.drawer-row.open {
  display: table-row;
}

.drawer-cell {
  padding: 16px 20px;
}

.drawer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}

.drawer-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 14px;
}

.drawer-panel-title {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-faint);
  margin-bottom: 8px;
}

/* Heartbeat & Pulse Dots */
@keyframes sim-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.35; transform: scale(0.9); }
}

.sim-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  background: #10b981;
  animation: sim-pulse 2s ease-in-out infinite;
  box-shadow: 0 0 6px rgba(16, 185, 129, 0.4);
}

/* ------------------------------------------------------------------------------
 * 13. UI Cards, Grid, Buttons & Inputs
 * ------------------------------------------------------------------------------ */
.card {
  background: var(--surface);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  padding: 18px;
  color: var(--text);
  transition: border-color 0.15s, box-shadow 0.15s;
}

.card:hover {
  border-color: var(--border-focus);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  text-decoration: none;
  transition: all 0.15s ease;
}

.btn:hover {
  background: var(--surface-hover);
  border-color: var(--accent);
}

.btn-primary {
  background: var(--accent);
  color: var(--brand-fg);
  border-color: var(--accent);
  font-weight: 600;
}

.btn-primary:hover {
  filter: brightness(1.1);
  color: var(--brand-fg);
}

.input,
.select {
  font-family: var(--font-sans);
  font-size: 13.5px;
  padding: 8px 12px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.input:focus,
.select:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 2px var(--accent-glow);
}

/* ------------------------------------------------------------------------------
 * 14. Typography Styles, Headings, Pre & Code
 * ------------------------------------------------------------------------------ */
h1 {
  font-size: clamp(24px, 4vw, 32px);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
  color: var(--text);
}

h2 {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.015em;
  margin: 32px 0 12px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
}

h3 {
  font-size: 16px;
  font-weight: 600;
  margin: 20px 0 8px;
  color: var(--text);
}

p {
  margin-bottom: 12px;
  color: var(--text);
}

a {
  color: var(--brand-text);
  text-decoration: underline;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--accent);
}

code {
  font-family: var(--font-mono);
  font-size: 12.5px;
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  background: var(--code-bg);
  border: 1px solid var(--border);
  color: var(--text);
  word-break: break-word;
}

pre {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  overflow-x: auto;
  margin: 14px 0;
  max-width: 100%;
}

pre code {
  background: none;
  border: 0;
  padding: 0;
  font-size: 13px;
  white-space: pre;
}

.ver {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 18px;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  background: var(--surface);
}

blockquote {
  margin: 14px 0;
  padding: 10px 16px;
  border-left: 3px solid var(--accent);
  background: var(--surface-elevated);
  border-radius: var(--radius);
  color: var(--text-muted);
}