/* ============================================================
   GLOBAL CSS — Best Antarctica Cruises
   Typography: Fraunces (headings) + DM Sans (body)
   Palette: Glacier Teal / Deep Navy / Champagne Gold
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,300;0,9..144,600;0,9..144,700;1,9..144,400&family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;1,9..40,400&display=swap');

/* ---- Design Tokens ---------------------------------------- */
:root {
  --color-primary:       #1B9AAA;
  --color-primary-dark:  #127885;
  --color-primary-xdark: #0D6070;
  --color-primary-light: #E8F7F9;
  --color-accent:        #D4A017;
  --color-accent-light:  #FDF6E3;
  --color-navy:          #0D1B2A;
  --color-navy-mid:      #1A2F42;
  --color-text:          #1A2332;
  --color-text-muted:    #5A6677;
  --color-text-light:    #8899AA;
  --color-bg:            #FFFFFF;
  --color-bg-alt:        #F5F8FA;
  --color-bg-ice:        #F0F7F9;
  --color-border:        #DDE3E9;
  --color-border-light:  #EEF2F5;

  --max-width:   1160px;
  --radius:      8px;
  --radius-lg:   14px;
  --shadow-sm:   0 1px 3px rgba(13,27,42,0.06), 0 1px 2px rgba(13,27,42,0.04);
  --shadow-md:   0 4px 12px rgba(13,27,42,0.08), 0 2px 4px rgba(13,27,42,0.04);
  --shadow-lg:   0 12px 32px rgba(13,27,42,0.10), 0 4px 8px rgba(13,27,42,0.06);
  --shadow-card: 0 2px 8px rgba(27,154,170,0.08), 0 1px 3px rgba(13,27,42,0.06);

  --transition: 0.2s ease;
  --transition-slow: 0.35s ease;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); text-decoration: none; }
ul, ol { list-style: none; }

/* ---- Typography ------------------------------------------- */
h1, h2, h3, h4 {
  font-family: 'Fraunces', Georgia, serif;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--color-navy);
}

h1 { font-size: clamp(2rem, 4vw, 3.25rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.25rem); margin-bottom: 1rem; }
h3 { font-size: clamp(1.1rem, 2vw, 1.35rem); }
h4 { font-size: 1rem; font-family: 'DM Sans', sans-serif; font-weight: 600; letter-spacing: 0; }

p { margin-bottom: 1rem; }
p:last-child { margin-bottom: 0; }

/* ---- Layout ----------------------------------------------- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 5rem 0;
}

.section--alt {
  background: var(--color-bg-alt);
}

.section--ice {
  background: var(--color-bg-ice);
}

.section--navy {
  background: var(--color-navy);
  color: #fff;
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-header h2 {
  margin-bottom: 0.75rem;
}

.section-header p {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  max-width: 640px;
  margin: 0 auto;
}

/* ---- Buttons ---------------------------------------------- */
.btn {
  display: inline-block;
  padding: 10px 22px;
  border-radius: 6px;
  font-family: 'DM Sans', sans-serif;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: opacity var(--transition), background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition);
  white-space: nowrap;
}

.btn:hover {
  opacity: 0.88;
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

.btn:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 3px;
}

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

.btn-primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: #fff;
  opacity: 1;
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary);
  color: #fff;
  opacity: 1;
}

.btn-navy {
  background: var(--color-navy);
  color: #fff;
  border-color: var(--color-navy);
}

.btn-white {
  background: #fff;
  color: var(--color-navy);
  border-color: #fff;
}

.btn-white:hover {
  background: var(--color-primary-light);
  border-color: var(--color-primary);
  color: var(--color-primary);
  opacity: 1;
}

.btn-lg {
  padding: 14px 32px;
  font-size: 1rem;
  border-radius: 8px;
}

/* ---- Header ----------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-sm);
}

.site-header .container {
  height: 68px;
  display: flex;
  align-items: center;
  gap: 2rem;
}

.site-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.site-logo__img {
  height: 52px;
  width: auto;
  display: block;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  margin-left: auto;
}

.site-nav a {
  font-family: 'DM Sans', sans-serif;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-muted);
  padding: 0.4rem 0.75rem;
  border-radius: 6px;
  text-decoration: none;
  transition: color var(--transition), background var(--transition);
  position: relative;
}

.site-nav a:hover {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

.site-nav a.active {
  color: var(--color-primary);
  font-weight: 600;
}

.site-nav a.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0.75rem;
  right: 0.75rem;
  height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
}

/* Hamburger */
.nav-toggle {
  display: none;
  margin-left: auto;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  border-radius: 6px;
  color: var(--color-navy);
  font-size: 1.4rem;
  line-height: 1;
  transition: background var(--transition);
}

.nav-toggle:hover { background: var(--color-bg-alt); }

/* ---- Footer ----------------------------------------------- */
.site-footer {
  background: var(--color-navy);
  color: rgba(255,255,255,0.75);
  padding: 3.5rem 0 2rem;
}

.site-footer .footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-bottom: 2.5rem;
}

.site-footer .footer-brand p {
  font-size: 0.875rem;
  line-height: 1.6;
  margin-top: 1rem;
  max-width: 300px;
}

.site-footer .footer-nav-group h4 {
  color: #fff;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 1rem;
  font-family: 'DM Sans', sans-serif;
}

.site-footer .footer-nav-group ul {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.site-footer .footer-nav-group a {
  color: rgba(255,255,255,0.65);
  font-size: 0.875rem;
  text-decoration: none;
  transition: color var(--transition);
}

.site-footer .footer-nav-group a:hover {
  color: var(--color-primary);
}

.site-footer .footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.site-footer .footer-disclosure {
  font-size: 0.78rem;
  line-height: 1.6;
  color: rgba(255,255,255,0.5);
  max-width: 720px;
}

.site-footer .footer-copyright {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.4);
}

/* ---- Mobile responsive ------------------------------------ */
@media (min-width: 640px) {
  .site-footer .footer-grid {
    grid-template-columns: 1.5fr 1fr 1fr;
  }

  .site-footer .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-start;
  }
}

@media (max-width: 767px) {
  .nav-toggle { display: flex; align-items: center; }

  .site-nav {
    display: none;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    background: #fff;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    padding: 1rem;
    gap: 0.25rem;
    margin-left: 0;
  }

  .site-nav.is-open { display: flex; }

  .site-nav a {
    padding: 0.75rem 1rem;
    font-size: 1rem;
  }

  .site-nav a.active::after { display: none; }
}

@media (min-width: 768px) {
  .site-header .container { height: 68px; }
}

/* ---- Utility classes -------------------------------------- */
.text-center { text-align: center; }
.text-muted { color: var(--color-text-muted); }
.text-primary { color: var(--color-primary); }
.font-serif { font-family: 'Fraunces', Georgia, serif; }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.3rem 0.75rem;
  border-radius: 100px;
}

.badge-primary {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
}

.badge-gold {
  background: var(--color-accent-light);
  color: #8B6914;
}

.badge-navy {
  background: rgba(13,27,42,0.08);
  color: var(--color-navy);
}

.pill {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.25rem 0.65rem;
  background: var(--color-bg-ice);
  color: var(--color-text-muted);
  border-radius: 100px;
  border: 1px solid var(--color-border-light);
}

.pill-primary {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  border-color: rgba(27,154,170,0.2);
}

.stars {
  color: var(--color-accent);
  letter-spacing: 0.05em;
  font-size: 0.9rem;
}

/* ---- Supporting page layout ------------------------------- */
.page-hero {
  background: var(--color-bg-ice);
  border-bottom: 1px solid var(--color-border);
  padding: 4rem 0 3rem;
}

.page-hero h1 {
  font-size: clamp(1.75rem, 3vw, 2.75rem);
  margin-bottom: 0.75rem;
}

.page-hero p {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  max-width: 600px;
}

.prose {
  max-width: 740px;
}

.prose h2 { margin: 2.5rem 0 1rem; font-size: 1.6rem; }
.prose h3 { margin: 2rem 0 0.75rem; font-size: 1.2rem; font-family: 'DM Sans', sans-serif; font-weight: 600; letter-spacing: 0; color: var(--color-navy); }
.prose p { color: var(--color-text); }
.prose ul { list-style: none; padding: 0; margin-bottom: 1.25rem; }
.prose ul li { padding-left: 1.5rem; position: relative; margin-bottom: 0.5rem; color: var(--color-text); }
.prose ul li::before { content: '→'; position: absolute; left: 0; color: var(--color-primary); font-weight: 600; }

.prose .criteria-list { margin: 1.5rem 0 2rem; }
.prose .criteria-item { display: flex; gap: 1rem; padding: 1.25rem; border: 1px solid var(--color-border); border-radius: var(--radius); margin-bottom: 0.75rem; align-items: flex-start; }
.prose .criteria-item .weight { font-family: 'Fraunces', Georgia, serif; font-size: 1.5rem; font-weight: 700; color: var(--color-primary); min-width: 50px; }
.prose .criteria-item .detail h4 { color: var(--color-navy); margin-bottom: 0.25rem; font-weight: 600; }
.prose .criteria-item .detail p { font-size: 0.9rem; margin: 0; color: var(--color-text-muted); }