@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root {
  /* Light Theme (PILOT brand from pilot-telematics.com) */
  --primary: #0284c7;
  --primary-hover: #0369a1;
  --primary-bg: #e0f2fe;
  --bg: #f1f5f9;
  --surface: #ffffff;
  --surface-alt: #f8fafc;
  --text-pr: #334155;
  --text-sec: #64748b;
  --text-dis: #cbd5e1;
  --line: #e2e8f0;
  --line-strong: #cbd5e1;

  --positive: #22c55e;
  --positive-bg: #dcfce7;
  --negative: #ef4444;
  --negative-bg: #fee2e2;
  --warning: #eab308;
  --warning-dim: #ca8a04;
  --warning-bg: #fef9c3;

  --nav-bg: rgba(255, 255, 255, 0.96);
  --nav-text: #334155;
  --nav-hover: rgba(0, 0, 0, 0.04);

  --mono: 'Courier New', ui-monospace, monospace;
  --sans: 'Inter', 'Segoe UI', system-ui, Arial, sans-serif;
  --transition: all 0.25s ease;
}

[data-theme="dark"] {
  /* Dark Theme */
  --primary: #38bdf8;
  --primary-hover: #7dd3fc;
  --primary-bg: #0c4a6e;
  --bg: #020617; /* Very dark slate */
  --surface: #0f172a; /* Slate 900 */
  --surface-alt: #1e293b; /* Slate 800 */
  --text-pr: #f8fafc;
  --text-sec: #94a3b8;
  --text-dis: #475569;
  --line: #1e293b;
  --line-strong: #334155;

  --positive: #4ade80;
  --positive-bg: #14532d;
  --negative: #f87171;
  --negative-bg: #7f1d1d;
  --warning: #facc15;
  --warning-dim: #b45309;
  --warning-bg: #713f12;

  --nav-bg: rgba(15, 23, 42, 0.96);
  --nav-text: #f8fafc;
  --nav-hover: rgba(255, 255, 255, 0.06);
}

/* Base resets */
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: var(--sans);
  color: var(--text-pr);
  background: var(--bg);
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* ─── SITE NAV ──────────────────────────────────── */
.topnav {
  position: sticky; top: 0; z-index: 100;
  background: var(--nav-bg);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: background-color 0.3s ease, border-color 0.3s ease;
}
.topnav-in {
  max-width: 1200px; margin: 0 auto; padding: 0 24px;
  display: flex; align-items: center; height: 54px; gap: 12px;
}
.topnav .logo-link {
  display: flex; align-items: center; gap: 10px;
  text-decoration: none; flex-shrink: 0;
}
.topnav .logo-link img { height: 24px; width: auto; }
/* Invert white logo in light mode if needed, or we'll swap the image source via JS/CSS */
[data-theme="light"] .topnav .logo-link img.pilot-logo {
  filter: brightness(0) invert(0.2); /* Make it slate-800 for light mode */
}
:root:not([data-theme="dark"]) .topnav .logo-link img.pilot-logo {
  filter: brightness(0) invert(0.2); /* Default light mode fallback */
}

.topnav .logo-text {
  font-family: var(--mono); font-size: 11px; letter-spacing: 2.5px;
  color: var(--primary); text-transform: uppercase; white-space: nowrap;
}
.topnav .logo-text b { color: var(--text-pr); letter-spacing: 1px; }
.topnav .nav-spacer { flex: 1; }
.topnav .nav-links { display: flex; gap: 4px; align-items: center; }
.topnav .nav-link {
  font-family: var(--mono); font-size: 11px; letter-spacing: 1.2px; text-transform: uppercase;
  text-decoration: none; color: var(--text-sec); padding: 7px 12px;
  border-radius: 5px; border: 1px solid transparent; transition: var(--transition);
  white-space: nowrap;
}
.topnav .nav-link:hover {
  color: var(--text-pr); background: var(--nav-hover); border-color: var(--line);
}
.topnav .nav-link.active {
  color: var(--surface); background: var(--primary); border-color: var(--primary); font-weight: 700;
}
[data-theme="dark"] .topnav .nav-link.active {
  color: #020617; /* Dark text on light blue primary for dark mode */
}

/* Theme Toggle Button */
.theme-toggle {
  background: none; border: 1px solid var(--line); color: var(--text-sec);
  border-radius: 5px; padding: 6px 8px; cursor: pointer;
  display: flex; align-items: center; justify-content: center; transition: var(--transition);
}
.theme-toggle:hover { color: var(--primary); border-color: var(--primary); }
.theme-toggle svg { width: 16px; height: 16px; fill: currentColor; }

/* Mobile Menu */
.topnav .hamburger {
  display: none; background: none; border: 1px solid var(--line); color: var(--text-sec);
  border-radius: 5px; padding: 7px 9px; cursor: pointer; font-size: 16px; line-height: 1;
}
.topnav .hamburger:hover { color: var(--text-pr); border-color: var(--text-pr); }

@media(max-width: 768px) {
  .topnav .nav-links {
    display: none; position: absolute; top: 54px; left: 0; right: 0;
    background: var(--nav-bg); border-bottom: 1px solid var(--line);
    flex-direction: column; padding: 10px 16px; gap: 4px;
    backdrop-filter: blur(14px); box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  }
  .topnav .nav-links.open { display: flex; }
  .topnav .hamburger { display: block; }
}

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