/* Leadvect design system — "a control room, not a dashboard" (§9). */
@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Sans+Arabic:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500;600&family=Inter:wght@400;500;600;700;800&display=swap');

:root {
  /* Same ground, surfaces and warm accent as the marketing site (site.css). */
  --ink: #0b0c0e;      /* ground */
  --panel: #141518;    /* rails, cards */
  --panel-2: #1b1d21;  /* raised */
  --line: #2a2c31;     /* hairlines */
  --text: #f6f5f2;
  --muted: #8b8880;
  --signal: #f5b544;   /* amber — accent, signals, primary action */
  --grad: linear-gradient(95deg, #fbbf24 0%, #f97316 55%, #ef4444 100%);
  color-scheme: dark;
  --verify: #3fb98f;   /* teal — verified */
  --warn: #e0574a;     /* dropped, risky, paused */
  --model: #7c8cf8;    /* AI-generated */

  --font-sans: 'Inter', 'IBM Plex Sans Arabic', system-ui, -apple-system, Segoe UI, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, SFMono-Regular, Menlo, monospace;

  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 14px;
  --sp: 8px;
  --maxw: 1120px;
}

/* Light theme (toggle in the app header; the page head applies the saved choice). */
:root[data-theme='light'] {
  --ink: #faf8f4;
  --panel: #ffffff;
  --panel-2: #f3f0ea;
  --line: #e4ded3;
  --text: #17140f;
  --muted: #776f61;
  --signal: #b45309;
  --verify: #047857;
  --warn: #c2410c;
  --model: #4f46e5;
  color-scheme: light;
}
:root[data-theme='light'] .btn-primary { color: #1d1003; }
body { transition: background-color .25s ease, color .25s ease; }

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--ink);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.55;
  letter-spacing: -0.01em;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { font-weight: 700; letter-spacing: -0.02em; margin: 0 0 0.4em; }
h1 { font-size: clamp(2rem, 5vw, 3.1rem); line-height: 1.05; }
h2 { font-size: clamp(1.3rem, 3vw, 1.8rem); }
p { margin: 0 0 1em; color: var(--muted); }
a { color: var(--signal); text-decoration: none; }
a:hover { text-decoration: underline; }

.mono { font-family: var(--font-mono); }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* Machine-derived values render in mono to separate evidence from prose (§9). */
.num { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-sans); font-weight: 600; font-size: 0.95rem;
  padding: 11px 20px; border-radius: var(--r-md);
  border: 1px solid transparent; cursor: pointer;
  transition: filter .15s ease, transform .05s ease;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--grad); color: #1d1003; box-shadow: 0 8px 24px -12px rgba(249, 115, 22, 0.7); }
.btn-primary:hover { filter: brightness(1.08); text-decoration: none; }
.btn-ghost { background: var(--panel); color: var(--text); border-color: var(--line); }
.btn-ghost:hover { background: var(--panel-2); text-decoration: none; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

.card {
  background: var(--panel); border: 1px solid var(--line);
  border-radius: var(--r-lg); padding: 20px;
}

.tag {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--font-mono); font-size: 0.72rem; font-weight: 500;
  padding: 3px 8px; border-radius: 999px; border: 1px solid var(--line);
  color: var(--muted); text-transform: uppercase; letter-spacing: 0.04em;
}
.tag-signal { color: var(--signal); border-color: color-mix(in srgb, var(--signal) 40%, var(--line)); }
.tag-verify { color: var(--verify); border-color: color-mix(in srgb, var(--verify) 40%, var(--line)); }
.tag-warn   { color: var(--warn);   border-color: color-mix(in srgb, var(--warn) 40%, var(--line)); }

/* Top nav */
.nav {
  position: sticky; top: 0; z-index: 20;
  background: color-mix(in srgb, var(--ink) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav .wrap { display: flex; align-items: center; justify-content: space-between; height: 60px; }
.brand { display: flex; align-items: baseline; gap: 10px; font-weight: 700; font-size: 1.2rem; letter-spacing: -0.02em; }
.brand { align-items: center; }
.brand::before { content: ''; width: 28px; height: 28px; border-radius: 8px; background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M8 16 16.5 7.5M10.5 7.5h6v6' fill='none' stroke='%231a0f02' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3Ccircle cx='7' cy='17' r='2.2' fill='%231a0f02'/%3E%3C/svg%3E") center / 18px no-repeat, var(--grad); display: inline-block; flex: none; box-shadow: 0 6px 18px -6px rgba(249, 115, 22, 0.6); }
.brand .ar { font-size: 1.05rem; color: var(--signal); order: 2; font-family: 'IBM Plex Sans Arabic', sans-serif; font-weight: 600; }

/* App menu: same on every tool page; the account chip (session.js) is appended at the end. */
.appnav { display: flex; gap: 4px; align-items: center; flex-wrap: wrap; }
.appnav > a { color: var(--muted); font-size: 0.9rem; padding: 6px 11px; border-radius: 9px; text-decoration: none; white-space: nowrap; }
.appnav > a:hover { color: var(--text); background: var(--panel); text-decoration: none; }
.appnav > a.on { color: var(--text); background: var(--panel-2); font-weight: 600; box-shadow: inset 0 0 0 1px var(--line); }
@media (max-width: 760px) {
  .nav .wrap { height: auto; min-height: 60px; flex-wrap: wrap; gap: 6px; padding-top: 8px; padding-bottom: 8px; }
  .appnav { overflow-x: auto; flex-wrap: nowrap; width: 100%; }
}

/* RTL: any element carrying dir="rtl" flips naturally. */
[dir='rtl'] { text-align: right; }

/* Accessibility: visible keyboard focus (§9 quality floor). */
:focus-visible { outline: 2px solid var(--signal); outline-offset: 2px; border-radius: 4px; }

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}