/* Antarctica Packing Guide - utility gear-manual palette */

:root {
  --color-bg:         #F8F9FA;
  --color-surface:    #FFFFFF;
  --color-surface-2:  #EEF2F7;
  --color-border:     #D0D7E0;
  --color-text:       #1A2030;
  --color-muted:      #5A6678;
  --color-accent:     #1A4F8A;
  --color-accent-bg:  #E8F0FA;
  --color-warm:       #D4600A;
  --color-warm-bg:    #FEF3E8;
  --color-ok:         #1A5C38;
  --color-ok-bg:      #EDFAF3;
  --color-danger:     #9B1C1C;
  --color-danger-bg:  #FEF2F2;
  --color-brand:      #1B5E8F;
  --color-brand-bg:   #EBF4FC;
  --color-navy-deep:  #0E2A4A;
  --radius:           8px;
  --radius-sm:        5px;
  --font-display:     'Inter', sans-serif;
  --font-body:        'Inter', sans-serif;
  --font-mono:        'JetBrains Mono', monospace;
  --font-size-base:   16px;
  --line-height:      1.68;
  --max-width:        1120px;
  --shadow-sm:        0 1px 3px rgba(14, 42, 74, 0.08);
  --shadow-md:        0 6px 20px rgba(14, 42, 74, 0.10);
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  line-height: var(--line-height);
  color: var(--color-text);
  background: var(--color-bg);
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

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

a { color: var(--color-accent); }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.25;
  color: var(--color-text);
  scroll-margin-top: 130px;
}

h1 { font-size: 2.3rem; margin: 0 0 16px; }

h2 {
  font-size: 1.6rem;
  margin: 56px 0 18px;
  padding-top: 20px;
  position: relative;
}

h2::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 46px;
  height: 4px;
  border-radius: 4px;
  background: var(--color-warm);
}

h3 { font-size: 1.2rem; margin: 32px 0 12px; }

p { margin: 0 0 16px; }

table { border-collapse: collapse; width: 100%; font-size: 0.95rem; }

/* ---------- Header ---------- */

.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 50;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  padding-bottom: 14px;
  flex-wrap: wrap;
  gap: 12px;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--color-text);
  text-decoration: none;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.site-nav a {
  color: var(--color-muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--color-accent);
  background: var(--color-accent-bg);
}

.independence-bar {
  background: var(--color-navy-deep);
  color: #C9D8EA;
  font-size: 0.8rem;
  text-align: center;
  padding: 7px 0;
}

/* ---------- Hero band (full-bleed photo) ---------- */

.hero-band {
  position: relative;
  width: 100vw;
  left: 50%;
  right: 50%;
  margin-left: -50vw;
  margin-right: -50vw;
  background: linear-gradient(160deg, #0E2A4A 0%, #163f6d 55%, #1A4F8A 100%);
  overflow: hidden;
}

.hero-band__photo {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.42;
}

.hero-band::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(9,26,46,0.55) 0%, rgba(9,26,46,0.72) 60%, rgba(9,26,46,0.92) 100%);
}

.hero-band .container {
  position: relative;
  z-index: 2;
  padding-top: 56px;
  padding-bottom: 40px;
}

.hero-eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.75rem;
  font-weight: 700;
  color: #FFD9B8;
  background: rgba(212, 96, 10, 0.22);
  border: 1px solid rgba(212, 96, 10, 0.5);
  border-radius: 999px;
  padding: 5px 14px;
  margin-bottom: 18px;
}

.hero-band h1 {
  color: #FFFFFF;
  max-width: 820px;
  text-shadow: 0 2px 12px rgba(0,0,0,0.25);
}

.hero-band .lede {
  font-size: 1.12rem;
  color: #DCE6F2;
  max-width: 760px;
}

.hero-band.hero-band--sub .container {
  padding-top: 44px;
  padding-bottom: 32px;
}

.hero-band.hero-band--sub .lede { max-width: 680px; }

.photo-credit {
  font-size: 0.72rem;
  color: rgba(255,255,255,0.55);
  position: absolute;
  right: 14px;
  bottom: 10px;
  z-index: 2;
  font-family: var(--font-mono);
}

.photo-credit a { color: rgba(255,255,255,0.75); }

/* ---------- Key Takeaways band ---------- */

.takeaways-band {
  position: relative;
  width: 100vw;
  left: 50%;
  right: 50%;
  margin-left: -50vw;
  margin-right: -50vw;
  background: var(--color-surface-2);
  border-bottom: 1px solid var(--color-border);
  padding: 30px 0;
}

.key-takeaways { }

.takeaways-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.takeaway-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow-sm);
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.takeaway-icon {
  flex-shrink: 0;
  width: 38px;
  height: 38px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent-bg);
  color: var(--color-accent);
}

.takeaway-item:nth-child(2) .takeaway-icon { background: var(--color-ok-bg); color: var(--color-ok); }
.takeaway-item:nth-child(3) .takeaway-icon { background: var(--color-warm-bg); color: var(--color-warm); }
.takeaway-item:nth-child(4) .takeaway-icon { background: var(--color-danger-bg); color: var(--color-danger); }

.takeaway-icon svg { width: 20px; height: 20px; }

.takeaway-label {
  display: block;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 4px;
}

.takeaway-item p { margin: 0; font-size: 0.92rem; }

/* ---------- Anchor nav ---------- */

.anchor-nav-band {
  position: relative;
  width: 100vw;
  left: 50%;
  right: 50%;
  margin-left: -50vw;
  margin-right: -50vw;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.anchor-nav {
  display: flex;
  flex-wrap: nowrap;
  overflow-x: auto;
  gap: 8px;
  padding: 14px 0;
  scrollbar-width: thin;
}

.anchor-nav a {
  flex-shrink: 0;
  font-size: 0.85rem;
  font-weight: 500;
  text-decoration: none;
  color: var(--color-accent);
  background: var(--color-accent-bg);
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 7px 15px;
  transition: background 0.15s ease, color 0.15s ease;
}

.anchor-nav a:hover,
.anchor-nav a.active {
  background: var(--color-accent);
  color: #fff;
}

/* ---------- Main content spacing ---------- */

main.container { padding-top: 8px; }

/* ---------- Pro Tip ---------- */

.pro-tip {
  background: var(--color-warm-bg);
  border-left: 4px solid var(--color-warm);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
  margin: 20px 0;
  font-size: 0.95rem;
  display: flex;
  gap: 10px;
  align-items: flex-start;
}

.pro-tip::before {
  content: "\1F4A1";
  flex-shrink: 0;
  font-size: 1.1rem;
  line-height: 1.5;
}

.pro-tip strong {
  color: var(--color-warm);
  font-family: var(--font-mono);
  text-transform: uppercase;
  font-size: 0.78rem;
  letter-spacing: 0.02em;
  margin-right: 6px;
}

/* ---------- Checklists ---------- */

ul.checklist {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 10px;
}

ul.checklist li {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 10px 14px 10px 36px;
  position: relative;
  font-size: 0.95rem;
  box-shadow: var(--shadow-sm);
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}

ul.checklist li:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

ul.checklist li::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 12px;
  width: 15px;
  height: 15px;
  border: 2px solid var(--color-accent);
  border-radius: 4px;
}

ul.checklist li.danger-item {
  border-color: #F0C2C2;
  background: var(--color-danger-bg);
  padding-left: 16px;
}

ul.checklist li.danger-item::before {
  content: none;
}

ul.luggage-limits,
ul.seasickness-list {
  padding-left: 20px;
  margin: 0 0 20px;
}

ul.luggage-limits li,
ul.seasickness-list li {
  margin-bottom: 8px;
  font-size: 0.96rem;
}

/* ---------- Interactive checklist ---------- */

.checklist-counter {
  font-family: var(--font-mono);
  font-weight: 700;
  color: #fff;
  background: var(--color-accent);
  border-radius: var(--radius-sm);
  display: inline-block;
  padding: 10px 18px;
  margin-bottom: 22px;
  box-shadow: var(--shadow-sm);
}

.checklist-category {
  margin-bottom: 26px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 18px 18px 6px;
  box-shadow: var(--shadow-sm);
}

.checklist-category h4 {
  font-family: var(--font-mono);
  text-transform: uppercase;
  font-size: 0.85rem;
  letter-spacing: 0.03em;
  color: var(--color-accent);
  margin: 0 0 12px;
}

ul.checklist-interactive {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 8px;
}

ul.checklist-interactive li {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 10px 14px 10px 36px;
  position: relative;
  font-size: 0.95rem;
  cursor: pointer;
  user-select: none;
  transition: background 0.15s ease, opacity 0.15s ease;
}

ul.checklist-interactive li::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 12px;
  width: 15px;
  height: 15px;
  border: 2px solid var(--color-accent);
  border-radius: 4px;
}

ul.checklist-interactive li.checked {
  text-decoration: line-through;
  opacity: 0.6;
  background: var(--color-ok-bg);
}

ul.checklist-interactive li.checked::before {
  background: var(--color-ok);
  border-color: var(--color-ok);
}

/* ---------- Tables ---------- */

.table-wrap {
  overflow-x: auto;
  margin: 0 0 24px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

table.data-table {
  min-width: 560px;
}

table.data-table th,
table.data-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

table.data-table thead th {
  background: var(--color-navy-deep);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: #C9D8EA;
  cursor: pointer;
  white-space: nowrap;
}

table.data-table thead th:hover {
  color: #fff;
  background: var(--color-accent);
}

table.data-table thead th.sort-asc::after { content: " \25B2"; }
table.data-table thead th.sort-desc::after { content: " \25BC"; }

table.data-table tbody tr:nth-child(even) { background: var(--color-surface-2); }

table.data-table tbody tr:last-child td { border-bottom: none; }

table.data-table tbody tr:hover { background: var(--color-accent-bg); }

/* ---------- Brand spotlight ---------- */

.brand-spotlight {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-top: 5px solid var(--color-brand);
  border-radius: var(--radius);
  padding: 30px;
  margin: 32px 0;
  box-shadow: var(--shadow-md);
}

.brand-spotlight__badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--color-brand);
  background: var(--color-brand-bg);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 4px 12px;
  margin-bottom: 14px;
}

.brand-spotlight__header h3 { margin: 0 0 6px; }

.brand-spotlight__sub {
  color: var(--color-muted);
  font-size: 0.95rem;
  margin-bottom: 22px;
}

.brand-spotlight__triplet {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
  margin-bottom: 22px;
}

.triplet-item {
  background: var(--color-brand-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 18px 18px;
}

.triplet-icon {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: var(--color-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-brand);
  margin-bottom: 10px;
  box-shadow: var(--shadow-sm);
}

.triplet-icon svg { width: 18px; height: 18px; }

.triplet-item strong {
  display: block;
  color: var(--color-brand);
  font-size: 0.95rem;
  margin-bottom: 6px;
}

.triplet-item p { margin: 0; font-size: 0.9rem; }

.brand-spotlight__meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 22px;
}

.brand-spotlight__meta-row span {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-brand);
  background: var(--color-brand-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 5px 10px;
}

.brand-spotlight__cta {
  display: inline-block;
  background: var(--color-brand);
  color: #fff !important;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 12px 22px;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
}

.brand-spotlight__cta:hover { opacity: 0.9; }

/* ---------- FAQ ---------- */

.faq-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  margin-bottom: 10px;
  padding: 4px 18px;
  box-shadow: var(--shadow-sm);
}

.faq-item summary {
  cursor: pointer;
  font-weight: 600;
  padding: 15px 0;
  list-style: none;
  position: relative;
  padding-right: 24px;
}

.faq-item summary::-webkit-details-marker { display: none; }

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 13px;
  font-size: 1.3rem;
  color: var(--color-accent);
}

.faq-item[open] summary::after { content: "\2212"; }
.faq-item[open] { box-shadow: var(--shadow-md); }

.faq-item p {
  padding-bottom: 16px;
  color: var(--color-muted);
  margin: 0;
}

/* ---------- Figures ---------- */

.figure {
  margin: 26px 0;
}

.figure img {
  margin: 0 auto;
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
}

.figure figcaption {
  font-size: 0.85rem;
  color: var(--color-muted);
  margin-top: 10px;
  text-align: center;
}

.figure figcaption .credit {
  display: block;
  font-size: 0.75rem;
  color: #94A0B2;
  margin-top: 2px;
}

/* ---------- Footer ---------- */

.site-footer {
  background: var(--color-navy-deep);
  color: #B9C6D9;
  margin-top: 64px;
  padding: 40px 0 28px;
  font-size: 0.9rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 28px;
  margin-bottom: 24px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-family: var(--font-display);
  font-weight: 700;
  margin-bottom: 10px;
}

.footer-col h4 {
  color: #fff;
  font-family: var(--font-mono);
  text-transform: uppercase;
  font-size: 0.78rem;
  letter-spacing: 0.03em;
  margin: 0 0 12px;
}

.footer-col ul { list-style: none; margin: 0; padding: 0; }
.footer-col li { margin-bottom: 8px; }

.site-footer a { color: #B9C6D9; text-decoration: none; }
.site-footer a:hover { color: #fff; text-decoration: underline; }

.site-footer .footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding-top: 18px;
  font-size: 0.82rem;
  color: #8FA0B8;
}

/* ---------- Utility ---------- */

.section-note {
  color: var(--color-muted);
  font-size: 0.9rem;
}

.verify-flag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-warm);
  background: var(--color-warm-bg);
  border-radius: 4px;
  padding: 1px 6px;
}

@media (max-width: 700px) {
  h1 { font-size: 1.7rem; }
  h2 { font-size: 1.32rem; }
  .site-nav { display: none; }
  .brand-spotlight { padding: 20px; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .hero-band .container { padding-top: 40px; padding-bottom: 30px; }
}