/* ============================================
   Blue Dawn Tech — Unified Design System
   Shared across all pages for consistent branding
   ============================================ */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@400;700;800&family=Inter:wght@400;500;600&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&display=swap');

/* --- Design Tokens (CSS Variables) --- */
:root {
  /* Primary palette */
  --primary: #08355f;
  --primary-container: #274c77;
  --primary-fixed: #d3e4ff;
  --primary-fixed-dim: #a6c9fb;

  /* Secondary palette */
  --secondary: #2a6485;
  --secondary-container: #a2d8ff;
  --secondary-fixed: #c7e7ff;
  --secondary-fixed-dim: #97cdf3;

  /* Tertiary palette */
  --tertiary: #003854;
  --tertiary-container: #214f6d;
  --tertiary-fixed: #cae6ff;

  /* Surfaces */
  --background: #faf9f6;
  --surface: #faf9f6;
  --surface-container: #eeeeea;
  --surface-container-low: #f4f4f0;
  --surface-container-lowest: #ffffff;
  --surface-container-high: #e8e8e5;
  --surface-variant: #e3e3df;

  /* Text colors */
  --on-surface: #1a1c1a;
  --on-background: #1a1c1a;
  --muted: #8B8C89;
  --nav-active: #274C77;
  --on-tertiary-container: #95c0e2;

  /* Borders */
  --outline: #73777f;
  --outline-variant: #c3c6d0;

  /* Status */
  --error: #ba1a1a;

  /* Border radius */
  --radius-sm: 2px;
  --radius-md: 4px;
  --radius-lg: 8px;
  --radius-xl: 12px;
}

/* --- Base Reset & Typography --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  color: var(--on-surface);
  background-color: var(--background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.6;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Manrope', system-ui, sans-serif;
  font-weight: 700;
  line-height: 1.2;
  color: var(--primary);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

@media (min-width: 768px) {
  h1 { font-size: 3.25rem; }
  h2 { font-size: 2.5rem; }
}

a {
  color: var(--secondary);
  text-decoration: none;
  transition: color 0.3s;
}

a:hover {
  color: var(--nav-active);
}

/* Material Symbols */
.material-symbols-outlined {
  font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
  vertical-align: middle;
}

/* --- Unified Header --- */
.site-header {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 50;
  background: rgba(250, 249, 246, 0.97);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.site-header nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  max-width: 80rem;
  margin: 0 auto;
  padding: 0.75rem 2rem;
}

.site-header .logo img {
  height: 44px;
  width: auto;
}

.site-header .nav-links {
  display: none;
  align-items: center;
  gap: 2rem;
}

@media (min-width: 768px) {
  .site-header .nav-links {
    display: flex;
  }
  .site-header .mobile-toggle {
    display: none;
  }
}

.site-header .nav-links a {
  font-family: 'Inter', sans-serif;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--muted);
  text-decoration: none;
  transition: all 0.3s;
}

.site-header .nav-links a:hover {
  color: var(--nav-active);
}

.site-header .nav-links a.active {
  color: var(--nav-active);
  border-bottom: 2px solid var(--nav-active);
  padding-bottom: 4px;
}


/* Header newsletter CTA */
.site-header .header-newsletter {
  display: none;
  align-items: center;
  gap: 0;
  background: #fff;
  border: 1px solid var(--outline-variant);
  border-radius: 999px;
  padding: 0.2rem 0.2rem 0.2rem 0;
  overflow: hidden;
}

@media (min-width: 768px) {
  .site-header .header-newsletter {
    display: flex;
  }
}

.site-header nav .header-newsletter input[type="email"] {
  -webkit-appearance: none;
  appearance: none;
  width: 180px;
  padding: 0.45rem 1rem !important;
  border: none !important;
  border-radius: 999px !important;
  font-family: 'Inter', sans-serif;
  font-size: 0.8125rem;
  color: var(--on-surface) !important;
  background: transparent !important;
  outline: none !important;
  box-shadow: none !important;
  margin: 0;
  line-height: 1.5;
}

.site-header nav .header-newsletter input[type="email"]::placeholder {
  color: var(--muted);
}

.site-header nav .header-newsletter input[type="email"]:focus {
  border: none !important;
  box-shadow: none !important;
}

.site-header nav .header-newsletter button[type="submit"] {
  -webkit-appearance: none;
  appearance: none;
  padding: 0.45rem 1.25rem;
  background: var(--primary-container) !important;
  color: #fff !important;
  border: none !important;
  border-radius: 999px !important;
  font-family: 'Inter', sans-serif;
  font-size: 0.8125rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.2s;
  letter-spacing: 0.01em;
  margin: 0;
  line-height: 1.5;
}

.site-header nav .header-newsletter button[type="submit"]:hover {
  background: var(--secondary) !important;
}

/* Mobile menu */
.site-header .mobile-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: none;
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius-lg);
  cursor: pointer;
  color: var(--primary);
}

@media (min-width: 768px) {
  .site-header .mobile-toggle {
    display: none;
  }
}

.site-header .mobile-menu {
  display: none;
  flex-direction: column;
  gap: 0;
  background: var(--surface-container-lowest);
  border-top: 1px solid var(--outline-variant);
  padding: 0.5rem 0;
}

.site-header .mobile-menu.open {
  display: flex;
}

.site-header .mobile-menu a {
  display: block;
  padding: 0.75rem 2rem;
  font-family: 'Inter', sans-serif;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--muted);
  text-decoration: none;
  transition: background 0.2s;
}

.site-header .mobile-menu a:hover {
  background: var(--surface-container-low);
  color: var(--nav-active);
}

.site-header .mobile-menu a.active {
  color: var(--nav-active);
}

/* --- Unified Footer --- */
.site-footer {
  background: var(--surface-container-low);
  width: 100%;
  padding: 3rem 0;
  border-top: 1px solid rgba(139, 140, 137, 0.15);
}

.site-footer .footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  max-width: 80rem;
  margin: 0 auto;
  padding: 0 2rem;
}

@media (min-width: 768px) {
  .site-footer .footer-inner {
    flex-direction: row;
    justify-content: space-between;
  }
}

.site-footer .footer-logo img {
  height: 36px;
  width: auto;
}

.site-footer .footer-links {
  display: flex;
  gap: 2rem;
}

.site-footer .footer-links a {
  font-family: 'Inter', sans-serif;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.3s;
}

.site-footer .footer-links a:hover {
  color: var(--nav-active);
}

.site-footer .footer-copy {
  font-family: 'Inter', sans-serif;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
}

/* --- Buttons --- */
.btn-primary {
  display: inline-block;
  background: var(--primary-container);
  color: #fff;
  padding: 1rem 2rem;
  border-radius: var(--radius-xl);
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-primary:hover {
  background: var(--secondary);
  color: #fff;
}

.btn-primary:active {
  transform: scale(0.95);
}

.btn-outline {
  display: inline-block;
  background: transparent;
  color: var(--primary);
  padding: 1rem 2rem;
  border-radius: var(--radius-xl);
  border: 1px solid var(--outline-variant);
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-outline:hover {
  background: var(--surface-container-low);
  color: var(--primary);
}

/* --- Cards --- */
.card {
  background: var(--surface-container-lowest);
  border-radius: var(--radius-xl);
  padding: 2rem;
  transition: all 0.4s;
  border-bottom: 4px solid transparent;
}

.card:hover {
  box-shadow: 0 20px 40px rgba(0,0,0,0.08);
  border-bottom-color: var(--secondary);
}

/* --- Page Content Container --- */
.page-content {
  padding-top: 5rem; /* Clear fixed header */
  min-height: 100vh;
}

/* --- Utility --- */
.container {
  max-width: 80rem;
  margin: 0 auto;
  padding: 0 2rem;
}

.section {
  padding: 4rem 0;
}

.text-muted {
  color: var(--muted);
}

/* --- Form Elements --- */
.form-input {
  width: 100%;
  padding: 0.625rem 1rem;
  background: var(--surface);
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius-lg);
  font-family: 'Inter', sans-serif;
  font-size: 0.875rem;
  color: var(--on-surface);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-input:focus {
  outline: none;
  border-color: var(--secondary);
  box-shadow: 0 0 0 3px rgba(42, 100, 133, 0.15);
}

textarea.form-input {
  resize: vertical;
  min-height: 120px;
}