/* Rendezvous design system: tokens, base typography, buttons. Shared by the landing page and (later) the app. */

:root {
  /* Colour: one calm accent (the logo's blue); the logo's red is used only in the brand mark. */
  --ink: #0f172a;
  --text: #334155;
  --muted: #64748b;
  --line: #e2e8f0;
  --line-strong: #cbd5e1;
  --bg: #ffffff;
  --bg-soft: #f8fafc;
  --bg-sunken: #f1f5f9;
  --accent: #1d4ed8;
  --accent-strong: #1e3a8a;
  --accent-soft: #eef2ff;
  --accent-contrast: #ffffff;
  --success: #15803d;
  --success-soft: #ecfdf3;
  --warning: #b45309;
  --warning-soft: #fffbeb;
  --danger: #b91c1c;
  --brand-gradient: linear-gradient(120deg, #1d4ed8 0%, #6d28d9 55%, #c8102e 100%);

  /* Type */
  --font: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  /* Shape & depth */
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 18px;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
  --shadow: 0 1px 2px rgba(15, 23, 42, 0.06), 0 8px 24px rgba(15, 23, 42, 0.06);
  --shadow-lg: 0 2px 4px rgba(15, 23, 42, 0.05), 0 24px 48px rgba(15, 23, 42, 0.10);

  /* Layout */
  --container: 1120px;
  --gutter: clamp(16px, 4vw, 32px);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #f1f5f9;
    --text: #cbd5e1;
    --muted: #94a3b8;
    --line: #1e293b;
    --line-strong: #334155;
    --bg: #0b1120;
    --bg-soft: #0f172a;
    --bg-sunken: #111a2e;
    --accent: #7ea2ff;
    --accent-strong: #aac1ff;
    --accent-soft: #16213d;
    --accent-contrast: #0b1120;
    --success: #4ade80;
    --success-soft: #0f2a1c;
    --warning: #fbbf24;
    --warning-soft: #2a220c;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 24px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 24px 48px rgba(0, 0, 0, 0.45);
    color-scheme: dark;
  }
}

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

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { transition: none !important; animation: none !important; } }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 { color: var(--ink); line-height: 1.15; margin: 0 0 0.5em; letter-spacing: -0.02em; font-weight: 650; }
h1 { font-size: clamp(2.3rem, 5.2vw, 3.6rem); letter-spacing: -0.035em; }
h2 { font-size: clamp(1.7rem, 3.2vw, 2.4rem); }
h3 { font-size: 1.12rem; letter-spacing: -0.01em; }
p { margin: 0 0 1em; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
img, svg { display: block; max-width: 100%; }

:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 6px; }

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 var(--gutter); }
.muted { color: var(--muted); }
.eyebrow { display: inline-block; font-size: 0.8rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent); margin-bottom: 14px; }
[hidden] { display: none !important; }  /* component display rules must never override the hidden attribute */
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); border: 0; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 44px; padding: 0 20px; border-radius: 10px; border: 1px solid transparent;
  font: 600 0.95rem/1 var(--font); cursor: pointer; text-decoration: none; white-space: nowrap;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease, box-shadow 0.15s ease;
}
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--accent); color: var(--accent-contrast); box-shadow: var(--shadow-sm); }
.btn-primary:hover { background: var(--accent-strong); }
.btn-secondary { background: var(--bg); color: var(--ink); border-color: var(--line-strong); }
.btn-secondary:hover { border-color: var(--muted); }
.btn-ghost { background: transparent; color: var(--text); }
.btn-ghost:hover { color: var(--ink); background: var(--bg-sunken); }
.btn-sm { height: 36px; padding: 0 14px; font-size: 0.88rem; }

/* Brand mark */
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); font-weight: 700; font-size: 1.12rem; letter-spacing: -0.02em; }
.brand:hover { text-decoration: none; }
.brand img { width: 30px; height: 30px; border-radius: 22%; }

/* Chips */
.chip { display: inline-flex; align-items: center; gap: 6px; height: 24px; padding: 0 10px; border-radius: 999px; font-size: 0.78rem; font-weight: 600; background: var(--bg-sunken); color: var(--text); }
.chip-success { background: var(--success-soft); color: var(--success); }
.chip-accent { background: var(--accent-soft); color: var(--accent); }
.chip-warning { background: var(--warning-soft); color: var(--warning); }