/* ShikshaTri — Design tokens
   Government / Digital India formal aesthetic
   Navy authority + saffron accent + technical blue */

:root {
  /* Core palette */
  --navy-900: #071a3d;
  --navy-800: #0b2a5b;
  --navy-700: #133c7a;
  --navy-600: #1e5fbf;
  --navy-500: #2f7ce6;
  --navy-100: #e6eefb;
  --navy-50:  #f2f6fd;

  --saffron-600: #d16712;
  --saffron-500: #e67514;
  --saffron-400: #f38b28;
  --saffron-100: #fde9d5;

  --green-600: #0d8a5a;
  --green-100: #d5f0e3;

  --red-600: #c1281c;
  --red-100: #fbe1de;

  /* Neutrals — subtly warm */
  --ink-900: #0d1220;
  --ink-800: #1e2436;
  --ink-700: #3a4256;
  --ink-600: #5a637a;
  --ink-500: #7d879e;
  --ink-400: #a4adc0;
  --ink-300: #ced3df;
  --ink-200: #e4e8ef;
  --ink-100: #f0f2f7;
  --ink-50:  #f7f8fb;
  --paper:   #ffffff;
  --canvas:  #f4f6fa;

  /* Type */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-serif: 'IBM Plex Serif', Georgia, serif;
  --font-mono: 'JetBrains Mono', 'IBM Plex Mono', ui-monospace, monospace;
  --font-devanagari: 'Noto Sans Devanagari', 'Inter', sans-serif;
  --font-tamil: 'Noto Sans Tamil', 'Inter', sans-serif;
  --font-telugu: 'Noto Sans Telugu', 'Inter', sans-serif;

  /* Radii */
  --r-xs: 4px;
  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 14px;
  --r-xl: 20px;

  /* Shadows — very subtle, official */
  --shadow-1: 0 1px 2px rgba(11, 42, 91, 0.06), 0 0 0 1px rgba(11, 42, 91, 0.05);
  --shadow-2: 0 4px 14px rgba(11, 42, 91, 0.08), 0 0 0 1px rgba(11, 42, 91, 0.06);
  --shadow-3: 0 12px 32px rgba(11, 42, 91, 0.12);

  --sidebar-w: 240px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-family: var(--font-sans);
  font-size: 14px;
  color: var(--ink-800);
  background: var(--canvas);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

button {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

a { color: inherit; text-decoration: none; }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: var(--ink-300); border-radius: 10px; border: 2px solid var(--canvas); }
::-webkit-scrollbar-track { background: transparent; }

/* Devanagari / Tamil / Telugu helpers */
.hi { font-family: var(--font-devanagari); }
.ta { font-family: var(--font-tamil); }
.te { font-family: var(--font-telugu); }

/* App layout */
.app-shell {
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  min-height: 100vh;
  background: var(--canvas);
}

/* Sidebar */
.sidebar {
  background: var(--navy-900);
  color: white;
  padding: 20px 14px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.sidebar::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.15); border-color: var(--navy-900); }

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 4px 8px 18px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  margin-bottom: 12px;
}
.brand-mark {
  width: 34px; height: 34px;
  display: grid; place-items: center;
  background: white;
  border-radius: var(--r-sm);
  flex-shrink: 0;
}
.brand-name {
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1;
}
.brand-sub {
  font-size: 10px;
  font-family: var(--font-mono);
  color: rgba(255,255,255,0.55);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-top: 3px;
}

.nav-section-label {
  font-size: 10px;
  font-weight: 600;
  color: rgba(255,255,255,0.4);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 14px 10px 6px;
}
.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: var(--r-sm);
  color: rgba(255,255,255,0.72);
  font-size: 13px;
  font-weight: 500;
  transition: background 0.12s, color 0.12s;
  width: 100%;
  text-align: left;
  cursor: pointer;
}
.nav-item:hover { background: rgba(255,255,255,0.06); color: white; }
.nav-item.active {
  background: linear-gradient(90deg, rgba(230,117,20,0.18) 0%, rgba(230,117,20,0.04) 100%);
  color: white;
  box-shadow: inset 3px 0 0 var(--saffron-500);
}
.nav-item .nav-icon {
  width: 18px; height: 18px;
  flex-shrink: 0;
  opacity: 0.9;
}
.nav-item .badge-count {
  margin-left: auto;
  font-size: 10px;
  font-family: var(--font-mono);
  background: rgba(255,255,255,0.12);
  padding: 2px 6px;
  border-radius: 20px;
}

.sidebar-footer {
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid rgba(255,255,255,0.08);
  font-size: 11px;
  color: rgba(255,255,255,0.5);
  display: flex;
  align-items: center;
  gap: 8px;
}
.avatar {
  width: 28px; height: 28px;
  border-radius: 999px;
  background: var(--saffron-500);
  color: white;
  display: grid; place-items: center;
  font-size: 11px;
  font-weight: 700;
}

/* Main pane */
.main {
  display: flex;
  flex-direction: column;
  min-width: 0;
}
.topbar {
  background: white;
  border-bottom: 1px solid var(--ink-200);
  padding: 12px 28px;
  display: flex;
  align-items: center;
  gap: 16px;
  position: sticky;
  top: 0;
  z-index: 10;
}
.crumbs {
  display: flex; align-items: center; gap: 8px;
  font-size: 13px; color: var(--ink-600);
}
.crumbs strong { color: var(--ink-900); font-weight: 600; }
.crumbs .sep { color: var(--ink-300); }

.topbar-actions { margin-left: auto; display: flex; align-items: center; gap: 10px; }

.lang-pill {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 10px;
  background: var(--ink-100);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  color: var(--ink-800);
  cursor: pointer;
}
.lang-pill:hover { background: var(--ink-200); }
.lang-pill .globe { width: 14px; height: 14px; }

.icon-btn {
  width: 34px; height: 34px;
  border-radius: var(--r-sm);
  display: grid; place-items: center;
  background: var(--ink-100);
  color: var(--ink-700);
  position: relative;
}
.icon-btn:hover { background: var(--ink-200); }
.icon-btn .dot {
  position: absolute;
  top: 6px; right: 6px;
  width: 8px; height: 8px;
  background: var(--saffron-500);
  border: 2px solid white;
  border-radius: 999px;
}

/* Content area */
.content {
  padding: 28px;
  max-width: 1400px;
  width: 100%;
}

/* Cards */
.card {
  background: white;
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-1);
  border: 1px solid var(--ink-200);
}
.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--ink-200);
  display: flex;
  align-items: center;
  gap: 12px;
}
.card-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--ink-900);
  letter-spacing: -0.01em;
}
.card-sub {
  font-size: 12px;
  color: var(--ink-600);
  margin-top: 2px;
}

.badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 3px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.01em;
}
.badge.navy { background: var(--navy-100); color: var(--navy-700); }
.badge.saffron { background: var(--saffron-100); color: var(--saffron-600); }
.badge.green { background: var(--green-100); color: var(--green-600); }
.badge.red { background: var(--red-100); color: var(--red-600); }
.badge.mono { font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.05em; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 9px 14px;
  border-radius: var(--r-sm);
  font-size: 13px;
  font-weight: 600;
  transition: all 0.12s;
  border: 1px solid transparent;
  cursor: pointer;
}
.btn-primary { background: var(--navy-800); color: white; }
.btn-primary:hover { background: var(--navy-700); }
.btn-saffron { background: var(--saffron-500); color: white; }
.btn-saffron:hover { background: var(--saffron-600); }
.btn-ghost { background: transparent; color: var(--ink-800); border-color: var(--ink-300); }
.btn-ghost:hover { background: var(--ink-100); }

.stat-num {
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: 32px;
  color: var(--ink-900);
  letter-spacing: -0.02em;
  line-height: 1;
}
.stat-label {
  font-size: 11px;
  color: var(--ink-600);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-top: 6px;
}

.progress-track {
  height: 6px;
  background: var(--ink-200);
  border-radius: 999px;
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  background: var(--navy-800);
  border-radius: 999px;
  transition: width 0.4s;
}
.progress-fill.saffron { background: var(--saffron-500); }
.progress-fill.green { background: var(--green-600); }

/* Section headers within screens */
.section-eyebrow {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--saffron-600);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-weight: 600;
}
.section-title {
  font-family: var(--font-serif);
  font-size: 26px;
  font-weight: 500;
  color: var(--ink-900);
  letter-spacing: -0.02em;
  margin: 6px 0 4px;
}
.section-sub {
  color: var(--ink-600);
  font-size: 14px;
}

/* Government-y accent bar */
.gov-stripe {
  display: flex;
  align-items: center;
  gap: 0;
  height: 4px;
  border-radius: 999px;
  overflow: hidden;
}
.gov-stripe > div { flex: 1; height: 100%; }
.gov-stripe .s1 { background: #ff671f; }
.gov-stripe .s2 { background: #ffffff; border-top: 1px solid var(--ink-200); border-bottom: 1px solid var(--ink-200); }
.gov-stripe .s3 { background: #046a38; }
.gov-stripe .chakra { background: #06038d; flex: 0 0 12px; }

/* Grid patterns / blueprint bg for 3D viewports */
.blueprint-bg {
  background-color: #0b1a3a;
  background-image:
    linear-gradient(rgba(255,255,255,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.05) 1px, transparent 1px),
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 80px 80px, 80px 80px, 16px 16px, 16px 16px;
}
.grid-bg {
  background-color: var(--paper);
  background-image:
    linear-gradient(var(--ink-100) 1px, transparent 1px),
    linear-gradient(90deg, var(--ink-100) 1px, transparent 1px);
  background-size: 24px 24px;
}

/* Utility */
.mono { font-family: var(--font-mono); }
.serif { font-family: var(--font-serif); }
.muted { color: var(--ink-600); }
.tiny { font-size: 11px; }
.small { font-size: 12px; }
.strong { font-weight: 600; }

.row { display: flex; align-items: center; }
.col { display: flex; flex-direction: column; }
.gap-4 { gap: 4px; } .gap-6 { gap: 6px; } .gap-8 { gap: 8px; }
.gap-12 { gap: 12px; } .gap-16 { gap: 16px; } .gap-20 { gap: 20px; }
.gap-24 { gap: 24px; }

/* Landing page specific */
.landing-hero {
  position: relative;
  padding: 80px 60px 60px;
  background: linear-gradient(180deg, #061634 0%, #0b2a5b 100%);
  color: white;
  overflow: hidden;
}
.landing-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  mask-image: radial-gradient(ellipse at 70% 40%, black 30%, transparent 70%);
}
.landing-hero > * { position: relative; z-index: 1; }

/* Blueprint annotation labels — technical readouts */
.annotation {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.9);
  pointer-events: none;
}
.annotation .dot-marker {
  width: 8px; height: 8px;
  border: 1.5px solid var(--saffron-400);
  border-radius: 999px;
  background: rgba(230,117,20,0.2);
  flex-shrink: 0;
}
.annotation .line {
  height: 1px;
  background: linear-gradient(90deg, var(--saffron-400), transparent);
  width: 40px;
}