/* ═══════════════════════════════════════════
   DESIGN TOKENS
═══════════════════════════════════════════ */
:root {
  --primary: #1B365D;
  --primary-light: #2C5F9E;
  --primary-dark: #0F2340;
  --white: #FFFFFF;
  --off-white: #F8F9FA;
  --silver: #C0C0C0;
  --silver-light: #E8EAED;
  --charcoal: #333333;
  --text: #1A1A1A;
  --text-secondary: #6B7280;
  --border: #E5E7EB;
  --border-light: #F0F1F3;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.10);
  --radius: 6px;
  --radius-lg: 10px;
  --transition: all 0.2s ease;
}

/* ═══════════════════════════════════════════
   RESET & BASE
═══════════════════════════════════════════ */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.6;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: var(--primary);
  text-decoration: none;
}

a:hover {
  color: var(--primary-light);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ═══════════════════════════════════════════
   HEADER
═══════════════════════════════════════════ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 2px;
  color: var(--primary);
}

.logo span {
  color: var(--charcoal);
  font-weight: 300;
}

/* Navigation (shared across pages) */
.header-nav,
.desktop-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}
.header-nav a,
.desktop-nav a {
  font-size: 13px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--charcoal);
  transition: var(--transition);
}
.header-nav a:hover,
.header-nav a.active,
.desktop-nav a:hover,
.desktop-nav a.active {
  color: var(--primary);
}

/* Mobile Controls */
.header-mobile-controls {
  display: none;
  align-items: center;
  gap: 12px;
}
.hamburger-btn {
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  color: var(--charcoal);
}
.hamburger-btn svg { width: 24px; height: 24px; }

/* Mobile Nav Overlay + Panel */
.mobile-nav-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.4); z-index: 400;
  backdrop-filter: blur(4px); display: none; opacity: 0; transition: opacity 0.3s;
}
.mobile-nav-overlay.open { display: block; opacity: 1; }

.mobile-nav-panel {
  position: fixed; top: 0; left: -320px; width: 300px; max-width: 80vw; height: 100vh;
  background: var(--white); z-index: 401; transition: left 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 4px 0 20px rgba(0,0,0,0.1); display: flex; flex-direction: column;
  overflow-y: auto;
}
.mobile-nav-panel.open { left: 0; }

.mobile-nav-header {
  display: flex; justify-content: space-between; align-items: center;
  padding: 20px 24px; border-bottom: 1px solid var(--border); flex-shrink: 0;
}
.mobile-nav-close {
  background: none; border: none; cursor: pointer; padding: 4px; color: var(--text-secondary);
}
.mobile-nav-close:hover { color: var(--text); }
.mobile-nav-close svg { width: 24px; height: 24px; }

.mobile-nav-links {
  display: flex; flex-direction: column; padding: 24px; gap: 0;
}
.mobile-nav-links a {
  font-size: 15px; font-weight: 600; text-transform: uppercase; letter-spacing: 1px;
  color: var(--text); text-decoration: none; border-bottom: 1px solid var(--border-light);
  padding: 16px 0; transition: var(--transition);
}
.mobile-nav-links a:hover { color: var(--primary); }
.mobile-nav-links a.active { color: var(--primary); }

@media (max-width: 768px) {
  .header-nav > a,
  .desktop-nav > a { display: none !important; }
  .header-mobile-controls { display: flex; }
}