/* ---------- TenderPilot AI · design tokens ---------- */
:root {
  --bg: #F6F7F3;
  --bg-elev: #FBFCF9;
  --surface: #FFFFFF;
  --surface-2: #F2F3EE;
  --border: #E5E7DE;
  --border-strong: #D5D8CC;
  --text: #0E1216;
  --text-2: #4B5560;
  --text-3: #7C8590;
  --text-inverse: #FFFFFF;

  --emerald: #047857;
  --emerald-2: #059669;
  --emerald-soft: #ECFDF5;
  --emerald-ink: #022C22;
  --navy: #0B1220;
  --navy-2: #142033;

  --amber: #B45309;
  --amber-soft: #FEF3C7;
  --red: #B91C1C;
  --red-soft: #FEE2E2;
  --blue: #1D4ED8;
  --blue-soft: #DBEAFE;
  --violet: #6D28D9;
  --violet-soft: #EDE9FE;

  --shadow-xs: 0 1px 2px rgba(15,20,25,.04);
  --shadow-sm: 0 1px 2px rgba(15,20,25,.04), 0 1px 3px rgba(15,20,25,.05);
  --shadow-md: 0 4px 12px -2px rgba(15,20,25,.06), 0 2px 4px rgba(15,20,25,.04);
  --shadow-lg: 0 18px 40px -16px rgba(15,20,25,.18), 0 8px 16px -8px rgba(15,20,25,.08);
  --shadow-glow: 0 0 0 1px rgba(4,120,87,.18), 0 8px 30px -8px rgba(4,120,87,.28);

  --radius-xs: 4px;
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 22px;

  --font-sans: "Geist", "Inter Display", system-ui, -apple-system, sans-serif;
  --font-mono: "Geist Mono", "JetBrains Mono", ui-monospace, monospace;
}

html[data-theme="dark"] {
  --bg: #0A0D0F;
  --bg-elev: #0E1214;
  --surface: #12161A;
  --surface-2: #181D22;
  --border: #1E252C;
  --border-strong: #2B333B;
  --text: #ECEEEA;
  --text-2: #9CA5AE;
  --text-3: #6B7480;
  --text-inverse: #0A0D0F;

  --emerald: #10B981;
  --emerald-2: #34D399;
  --emerald-soft: rgba(16,185,129,.12);
  --emerald-ink: #ECFDF5;
  --navy: #0B1220;

  --amber: #F59E0B;
  --amber-soft: rgba(245,158,11,.14);
  --red: #EF4444;
  --red-soft: rgba(239,68,68,.14);
  --blue: #60A5FA;
  --blue-soft: rgba(96,165,250,.14);
  --violet: #A78BFA;
  --violet-soft: rgba(167,139,250,.14);

  --shadow-sm: 0 1px 2px rgba(0,0,0,.4);
  --shadow-md: 0 4px 12px rgba(0,0,0,.45);
  --shadow-lg: 0 18px 40px -16px rgba(0,0,0,.6), 0 8px 16px -8px rgba(0,0,0,.45);
  --shadow-glow: 0 0 0 1px rgba(16,185,129,.3), 0 8px 30px -8px rgba(16,185,129,.4);
}

* { box-sizing: border-box; }
html, body, #root { height: 100%; }
body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-feature-settings: "ss01","cv11","tnum";
  font-size: 14px;
  line-height: 1.5;
  letter-spacing: -0.005em;
}

button { font-family: inherit; cursor: pointer; }
input, textarea, select { font-family: inherit; color: inherit; }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 999px; border: 2px solid var(--bg); }
::-webkit-scrollbar-thumb:hover { background: var(--text-3); }

/* ---------- Atom utilities ---------- */
.mono { font-family: var(--font-mono); font-feature-settings: "ss01","tnum"; }
.muted { color: var(--text-2); }
.muted-2 { color: var(--text-3); }
.row { display: flex; align-items: center; }
.col { display: flex; flex-direction: column; }
.gap-1 { gap: 4px; } .gap-2 { gap: 8px; } .gap-3 { gap: 12px; } .gap-4 { gap: 16px; }
.gap-5 { gap: 20px; } .gap-6 { gap: 24px; } .gap-8 { gap: 32px; }
.grow { flex: 1; }
.center { display: flex; align-items: center; justify-content: center; }
.between { display: flex; align-items: center; justify-content: space-between; }
.wrap { flex-wrap: wrap; }

.divider { height: 1px; background: var(--border); width: 100%; }
.vdivider { width: 1px; background: var(--border); align-self: stretch; }

.tnum { font-variant-numeric: tabular-nums; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 14px; border-radius: var(--radius-md);
  border: 1px solid var(--border-strong); background: var(--surface);
  color: var(--text); font-size: 13px; font-weight: 500;
  transition: all .14s ease; white-space: nowrap;
  box-shadow: var(--shadow-xs);
}
.btn:hover { background: var(--surface-2); border-color: var(--text-3); }
.btn-primary {
  background: var(--emerald); color: white; border-color: var(--emerald);
  box-shadow: 0 1px 0 rgba(255,255,255,.18) inset, 0 6px 14px -6px rgba(4,120,87,.5);
}
.btn-primary:hover { background: var(--emerald-2); border-color: var(--emerald-2); }
.btn-dark { background: var(--navy); color: white; border-color: var(--navy); }
.btn-dark:hover { background: var(--navy-2); }
.btn-ghost { background: transparent; border-color: transparent; box-shadow: none; color: var(--text-2); }
.btn-ghost:hover { background: var(--surface-2); color: var(--text); }
.btn-sm { padding: 5px 10px; font-size: 12px; border-radius: var(--radius-sm); }
.btn-lg { padding: 11px 18px; font-size: 14px; }
.btn-icon { padding: 6px; }

/* ---------- Card ---------- */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}
.card-pad { padding: 20px; }
.card-pad-sm { padding: 14px 16px; }

/* ---------- Chips & badges ---------- */
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 3px 9px; font-size: 11.5px; font-weight: 500;
  border-radius: 999px; border: 1px solid var(--border-strong);
  background: var(--surface-2); color: var(--text-2);
  white-space: nowrap; line-height: 1.4;
}
.chip-dot { width: 6px; height: 6px; border-radius: 999px; background: currentColor; }
.chip.emerald { background: var(--emerald-soft); color: var(--emerald); border-color: rgba(4,120,87,.2); }
.chip.amber { background: var(--amber-soft); color: var(--amber); border-color: rgba(180,83,9,.25); }
.chip.red { background: var(--red-soft); color: var(--red); border-color: rgba(185,28,28,.25); }
.chip.blue { background: var(--blue-soft); color: var(--blue); border-color: rgba(29,78,216,.25); }
.chip.violet { background: var(--violet-soft); color: var(--violet); border-color: rgba(109,40,217,.25); }
.chip.solid-navy { background: var(--navy); color: white; border-color: var(--navy); }

/* ---------- Form ---------- */
.input, .textarea, .select {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  border-radius: var(--radius-md);
  font-size: 13px;
  color: var(--text);
  transition: border-color .14s, box-shadow .14s;
}
.input:focus, .textarea:focus, .select:focus {
  outline: none; border-color: var(--emerald);
  box-shadow: 0 0 0 3px rgba(4,120,87,.12);
}
.label { font-size: 12px; font-weight: 500; color: var(--text-2); margin-bottom: 6px; display:block; }

/* ---------- AI shimmer / glow ---------- */
.ai-glow {
  background: linear-gradient(135deg, rgba(29,78,216,.06), rgba(4,120,87,.06));
  border: 1px solid rgba(29,78,216,.18);
}
html[data-theme="dark"] .ai-glow {
  background: linear-gradient(135deg, rgba(96,165,250,.08), rgba(16,185,129,.08));
  border-color: rgba(96,165,250,.22);
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}
.shimmer {
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.4), transparent);
  background-size: 200% 100%;
  animation: shimmer 1.6s linear infinite;
}

@keyframes pulse-dot {
  0%,100% { opacity: 1; transform: scale(1); }
  50% { opacity: .4; transform: scale(.85); }
}
.pulse-dot { animation: pulse-dot 1.6s ease-in-out infinite; }

@keyframes spin { to { transform: rotate(360deg); } }
.spin { animation: spin 1s linear infinite; }

@keyframes fade-in-up {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}
.anim-in { animation: fade-in-up .35s ease both; }

@keyframes ai-bar {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(400%); }
}

/* ---------- Grid utility ---------- */
.grid { display: grid; gap: 16px; }
.g-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.g-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.g-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

@media (max-width: 980px) {
  .g-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .g-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 640px) {
  .g-4, .g-3, .g-2 { grid-template-columns: 1fr; }
}

/* ---------- App shell ---------- */
.app {
  display: grid;
  grid-template-columns: 248px 1fr;
  height: 100vh;
  background: var(--bg);
}
.app.collapsed { grid-template-columns: 64px 1fr; }
@media (max-width: 900px) { .app, .app.collapsed { grid-template-columns: 1fr; } }

.sidebar {
  background: var(--bg-elev);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
  min-height: 0;
  overflow-y: auto;
}
@media (max-width: 900px) { .sidebar { display: none; } }

.main { display: flex; flex-direction: column; min-width: 0; min-height: 0; }
.main-scroll { flex: 1; overflow-y: auto; }

.topbar {
  height: 56px; flex-shrink: 0;
  border-bottom: 1px solid var(--border);
  background: color-mix(in oklab, var(--bg-elev) 80%, transparent);
  backdrop-filter: blur(12px);
  display: flex; align-items: center; padding: 0 20px; gap: 12px;
  position: sticky; top: 0; z-index: 10;
}

.page { padding: 28px 32px 80px; max-width: 1480px; margin: 0 auto; width: 100%; }
@media (max-width: 700px) { .page { padding: 20px 16px 60px; } }

.page-title { font-size: 22px; font-weight: 600; letter-spacing: -0.018em; margin: 0; }
.page-sub { font-size: 13.5px; color: var(--text-2); margin-top: 4px; }

/* ---------- Sidebar items ---------- */
.nav-section {
  padding: 14px 14px 6px;
  font-size: 10.5px; text-transform: uppercase; letter-spacing: .08em;
  color: var(--text-3); font-weight: 600;
}
.nav-item {
  display: flex; align-items: center; gap: 10px;
  padding: 7px 12px; margin: 1px 8px;
  border-radius: var(--radius-sm);
  color: var(--text-2); font-size: 13px; font-weight: 500;
  cursor: pointer; user-select: none;
  transition: background .14s, color .14s;
}
.nav-item:hover { background: var(--surface-2); color: var(--text); }
.nav-item.active { background: var(--surface); color: var(--text); box-shadow: var(--shadow-xs); border: 1px solid var(--border); margin: 0 7px; padding: 6px 11px; }
.nav-item .icon { width: 16px; height: 16px; flex-shrink: 0; opacity: .85; }
.nav-item.active .icon { color: var(--emerald); opacity: 1; }
.nav-item .count {
  margin-left: auto; font-size: 11px; padding: 1px 6px; border-radius: 999px;
  background: var(--surface-2); color: var(--text-2); font-family: var(--font-mono);
}
.nav-item.active .count { background: var(--emerald-soft); color: var(--emerald); }

/* ---------- KPI tiles ---------- */
.kpi { padding: 18px 20px; }
.kpi .label { font-size: 12px; color: var(--text-2); font-weight: 500; letter-spacing: 0; margin: 0; }
.kpi .value { font-size: 28px; font-weight: 600; letter-spacing: -0.025em; margin-top: 6px; line-height: 1.1; }
.kpi .delta { display: inline-flex; align-items: center; gap: 4px; font-size: 12px; margin-top: 8px; }
.kpi .delta.up { color: var(--emerald); }
.kpi .delta.down { color: var(--red); }
.kpi .spark { margin-top: 10px; }

/* ---------- Table ---------- */
.table { width: 100%; border-collapse: collapse; font-size: 13px; }
.table th, .table td { text-align: left; padding: 11px 14px; border-bottom: 1px solid var(--border); }
.table th { font-weight: 500; color: var(--text-2); font-size: 11.5px; text-transform: uppercase; letter-spacing: .06em; background: var(--surface-2); }
.table tr:last-child td { border-bottom: 0; }
.table tr:hover td { background: var(--surface-2); }

/* ---------- Command palette ---------- */
.cmd-backdrop {
  position: fixed; inset: 0; background: rgba(8,12,15,.45);
  backdrop-filter: blur(4px);
  z-index: 50; display: flex; align-items: flex-start; justify-content: center;
  padding-top: 14vh;
}
.cmd {
  width: 92%; max-width: 620px;
  background: var(--surface); border: 1px solid var(--border-strong);
  border-radius: 14px; box-shadow: var(--shadow-lg);
  overflow: hidden;
}

/* ---------- Progress ring ---------- */
.ring-wrap { position: relative; }
.ring-wrap .ring-label {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  flex-direction: column;
}

/* ---------- Avatar ---------- */
.avatar {
  width: 28px; height: 28px; border-radius: 999px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--emerald); color: white; font-weight: 600; font-size: 11.5px;
  letter-spacing: .02em;
  border: 2px solid var(--surface);
}

/* ---------- Hero gradient (landing) ---------- */
.hero-grad {
  background:
    radial-gradient(1100px 540px at 78% -10%, rgba(4,120,87,.10), transparent 60%),
    radial-gradient(800px 480px at 8% 8%, rgba(29,78,216,.07), transparent 60%),
    linear-gradient(180deg, var(--bg-elev), var(--bg));
}

/* ---------- Misc ---------- */
.kbd {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 18px; height: 18px; padding: 0 4px;
  border-radius: 4px; border: 1px solid var(--border-strong);
  background: var(--surface); font-size: 10.5px; font-family: var(--font-mono);
  color: var(--text-2);
}

.placeholder-img {
  background:
    repeating-linear-gradient(135deg, var(--surface-2) 0 8px, transparent 8px 16px),
    var(--bg);
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-md);
  color: var(--text-3); font-family: var(--font-mono); font-size: 11px;
  display: flex; align-items: center; justify-content: center;
}

.scrollx { overflow-x: auto; }
.no-scrollbar::-webkit-scrollbar { display: none; }

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

/* ---------- Mobile / Responsive overrides ---------- */
@media (max-width: 640px) {
  /* Grids collapse to 1 col on small mobile */
  .g-2, .g-3, .g-4 { grid-template-columns: 1fr !important; }

  /* Tables: allow horizontal scroll, don't shrink text unreadably */
  .table { font-size: 12px; }
  .scrollx { -webkit-overflow-scrolling: touch; }

  /* Page padding tighter on very small screens */
  .page { padding: 16px 12px 60px; }

  /* KPI cards: 2 cols on mobile instead of 4 */
  .grid.g-4 { grid-template-columns: repeat(2, 1fr) !important; }

  /* Hide kbd shortcuts in topbar on mobile */
  .topbar .kbd { display: none; }

  /* Full-bleed layouts (chat/analysis/builder) need min-height */
  .chat-grid, .ta-grid, .pb-grid { min-height: calc(100vh - 56px); }
}

@media (max-width: 480px) {
  /* Stack KPIs to single column on very small screens */
  .grid.g-4 { grid-template-columns: 1fr !important; }

  /* Hide non-essential table columns */
  .table th:nth-child(5),
  .table td:nth-child(5),
  .table th:nth-child(6),
  .table td:nth-child(6) { display: none; }
}

/* Topbar compact on mobile */
@media (max-width: 900px) {
  .topbar { padding: 0 12px; gap: 6px; }
  .topbar .vdivider { display: none; }
}