/* ============================================================
   Thailand Studio — Design System
   Shared CSS for all guide sub-sites
   (living, expat, visit, retire, remote)
   ============================================================ */

/* --- Google Fonts ------------------------------------------ */
@import url('https://fonts.googleapis.com/css2?family=Nunito:wght@400;600;700;800&display=swap');

/* --- Custom Properties ------------------------------------- */
:root {
  /* Brand palette */
  --navy:        #0e2f44;
  --teal:        #0D7377;
  --teal-light:  #11999E;
  --teal-dark:   #065355;
  --gold:        #C4A635;
  --green:       #06D6A0;

  /* Surfaces */
  --bg:          #FFFFFF;
  --bg-alt:      #F7F9FC;
  --text:        #1A202C;
  --text-muted:  #718096;
  --border:      #E2E8F0;

  /* Elevation */
  --shadow:      0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
  --shadow-md:   0 4px 12px rgba(0,0,0,.1), 0 2px 4px rgba(0,0,0,.06);

  /* Radii */
  --radius:      12px;
  --radius-sm:   8px;

  /* Layout */
  --sidebar-w:   240px;

  /* Motion */
  --transition:  0.2s ease;

  /* Typography */
  --font-body:   'Nunito', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono:   'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

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

a:hover { color: var(--teal-dark); }

ul, ol { list-style: none; }

table {
  border-collapse: collapse;
  width: 100%;
}

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

button { cursor: pointer; }

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.25;
  color: var(--navy);
}

h1 { font-size: 2.25rem; }
h2 { font-size: 1.75rem; }
h3 { font-size: 1.35rem; }
h4 { font-size: 1.15rem; }

p + p { margin-top: 1rem; }

/* --- Skip Link --------------------------------------------- */
.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  background: var(--navy);
  color: #fff;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  z-index: 9999;
  font-weight: 600;
  transition: top var(--transition);
}

.skip-link:focus {
  top: 1rem;
  color: #fff;
}

/* --- Super-nav (Cross-property bar) ------------------------ */
.super-nav {
  background: var(--navy);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  white-space: nowrap;
  scrollbar-width: none;
}

.super-nav::-webkit-scrollbar { display: none; }

.super-nav__inner {
  display: flex;
  align-items: center;
  gap: 0;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

.super-nav__link {
  color: rgba(255,255,255,.65);
  padding: 0.55rem 0.85rem;
  display: inline-block;
  transition: color var(--transition), background var(--transition);
  border-bottom: 2px solid transparent;
}

.super-nav__link:hover,
.super-nav__link--active {
  color: #fff;
  background: rgba(255,255,255,.07);
  border-bottom-color: var(--gold);
}

.super-nav__link--active { color: var(--gold); }

/* --- Main Navbar ------------------------------------------- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: box-shadow var(--transition);
}

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
  height: 60px;
}

.navbar__logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--navy);
  text-decoration: none;
}

.navbar__logo img {
  height: 32px;
  width: auto;
}

.navbar__links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.navbar__link {
  padding: 0.5rem 0.75rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
  border-radius: var(--radius-sm);
  transition: background var(--transition), color var(--transition);
}

.navbar__link:hover,
.navbar__link--active {
  background: var(--bg-alt);
  color: var(--teal);
}

.navbar__link--active {
  color: var(--teal-dark);
  font-weight: 700;
}

/* Dropdown */
.navbar__dropdown {
  position: relative;
}

.navbar__dropdown-toggle::after {
  content: '';
  display: inline-block;
  width: 0; height: 0;
  margin-left: 0.35rem;
  vertical-align: 0.15em;
  border-top: 4px solid;
  border-right: 4px solid transparent;
  border-left: 4px solid transparent;
  transition: transform var(--transition);
}

.navbar__dropdown.open .navbar__dropdown-toggle::after {
  transform: rotate(180deg);
}

.navbar__dropdown-menu {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  min-width: 200px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  padding: 0.5rem 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
  z-index: 1001;
}

.navbar__dropdown.open .navbar__dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.navbar__dropdown-menu a {
  display: block;
  padding: 0.5rem 1rem;
  color: var(--text);
  font-size: 0.88rem;
  font-weight: 600;
  transition: background var(--transition);
}

.navbar__dropdown-menu a:hover {
  background: var(--bg-alt);
  color: var(--teal);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: none;
  border: none;
  padding: 4px;
  cursor: pointer;
  z-index: 1100;
}

.hamburger span {
  display: block;
  height: 2.5px;
  width: 100%;
  background: var(--navy);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.hamburger.active span:nth-child(1) {
  transform: translateY(7.5px) rotate(45deg);
}

.hamburger.active span:nth-child(2) { opacity: 0; }

.hamburger.active span:nth-child(3) {
  transform: translateY(-7.5px) rotate(-45deg);
}

/* --- Mobile Menu ------------------------------------------- */
.mobile-menu {
  position: fixed;
  top: 0;
  right: -100%;
  width: 280px;
  height: 100vh;
  background: var(--bg);
  box-shadow: -4px 0 20px rgba(0,0,0,.15);
  z-index: 1050;
  padding: 5rem 1.5rem 2rem;
  transition: right 0.3s ease;
  overflow-y: auto;
}

.mobile-menu.open { right: 0; }

.mobile-menu__overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.4);
  z-index: 1040;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.mobile-menu__overlay.open {
  opacity: 1;
  visibility: visible;
}

.mobile-menu__link {
  display: block;
  padding: 0.75rem 0;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  border-bottom: 1px solid var(--border);
}

.mobile-menu__link:hover { color: var(--teal); }

/* --- Hero Section ------------------------------------------ */
.hero {
  background: linear-gradient(135deg, var(--navy) 0%, var(--teal-dark) 50%, var(--teal) 100%);
  color: #fff;
  padding: 3.5rem 1rem 2.5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(196,166,53,.15) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero__inner {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.hero__badge {
  display: inline-block;
  background: rgba(255,255,255,.15);
  border: 1px solid rgba(255,255,255,.2);
  color: var(--gold);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 0.3rem 0.85rem;
  border-radius: 100px;
  margin-bottom: 1rem;
}

.hero h1 {
  color: #fff;
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 0.75rem;
}

.hero__subtitle {
  font-size: 1.1rem;
  color: rgba(255,255,255,.85);
  max-width: 600px;
  margin: 0 auto 1.5rem;
  line-height: 1.6;
}

/* Stats bar */
.hero__stats {
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,.15);
}

.hero__stat {
  text-align: center;
}

.hero__stat-value {
  display: block;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--gold);
}

.hero__stat-label {
  font-size: 0.75rem;
  color: rgba(255,255,255,.7);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* --- Container --------------------------------------------- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

.container--narrow { max-width: 800px; }

/* --- Main Layout with Sidebar ------------------------------ */
.layout {
  display: flex;
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1rem;
}

.layout__sidebar {
  width: var(--sidebar-w);
  flex-shrink: 0;
  position: sticky;
  top: 80px;
  align-self: flex-start;
  max-height: calc(100vh - 100px);
  overflow-y: auto;
}

.layout__content {
  flex: 1;
  min-width: 0;
}

/* Sidebar navigation */
.sidebar-nav__group { margin-bottom: 1.25rem; }

.sidebar-nav__title {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  padding: 0.25rem 0.75rem;
  margin-bottom: 0.25rem;
}

.sidebar-nav__link {
  display: block;
  padding: 0.35rem 0.75rem;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-muted);
  border-left: 3px solid transparent;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  transition: all var(--transition);
}

.sidebar-nav__link:hover {
  color: var(--teal);
  background: var(--bg-alt);
}

.sidebar-nav__link--active {
  color: var(--teal-dark);
  border-left-color: var(--teal);
  background: rgba(13,115,119,.06);
}

/* --- Section ----------------------------------------------- */
.section {
  padding: 3rem 0;
}

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

.section__header {
  text-align: center;
  margin-bottom: 2.5rem;
}

.section__header h2 { margin-bottom: 0.5rem; }

.section__header p {
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto;
}

/* --- Cards Grid -------------------------------------------- */
.cards-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

/* --- Card -------------------------------------------------- */
.card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: transform var(--transition), box-shadow var(--transition);
  position: relative;
  overflow: hidden;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: rgba(13,115,119,.08);
  border-radius: var(--radius-sm);
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--teal);
}

.card__title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 0.5rem;
}

.card__text {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.card__link {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  margin-top: 0.75rem;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--teal);
}

.card__link:hover { color: var(--teal-dark); }

.card__link::after {
  content: '\2192';
  transition: transform var(--transition);
}

.card__link:hover::after {
  transform: translateX(3px);
}

/* Card accent strip */
.card--accent {
  border-top: 3px solid var(--teal);
}

.card--gold { border-top-color: var(--gold); }
.card--green { border-top-color: var(--green); }
.card--navy { border-top-color: var(--navy); }

/* --- Accordion --------------------------------------------- */
.accordion { margin-bottom: 1.5rem; }

.accordion-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 0.5rem;
  overflow: hidden;
  background: var(--bg);
}

.accordion-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 1rem 1.25rem;
  background: none;
  border: none;
  font-size: 1rem;
  font-weight: 700;
  color: var(--navy);
  text-align: left;
  cursor: pointer;
  transition: background var(--transition);
  gap: 0.75rem;
}

.accordion-header:hover { background: var(--bg-alt); }

.accordion-header__icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  position: relative;
  transition: transform var(--transition);
}

.accordion-header__icon::before,
.accordion-header__icon::after {
  content: '';
  position: absolute;
  background: var(--text-muted);
  border-radius: 1px;
  transition: transform var(--transition);
}

.accordion-header__icon::before {
  top: 50%;
  left: 2px;
  right: 2px;
  height: 2px;
  transform: translateY(-50%);
}

.accordion-header__icon::after {
  left: 50%;
  top: 2px;
  bottom: 2px;
  width: 2px;
  transform: translateX(-50%);
}

.accordion-item.open .accordion-header__icon::after {
  transform: translateX(-50%) rotate(90deg);
  opacity: 0;
}

.accordion-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
}

.accordion-item.open .accordion-body {
  max-height: 2000px;
  padding: 0 1.25rem 1.25rem;
}

.accordion-body__inner {
  font-size: 0.94rem;
  color: var(--text);
  line-height: 1.7;
}

/* --- Section Accordion ------------------------------------- */
.section-accordion {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 1rem;
  background: var(--bg);
  overflow: hidden;
}

.section-accordion__header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  width: 100%;
  padding: 1.1rem 1.25rem;
  background: var(--bg-alt);
  border: none;
  border-bottom: 1px solid transparent;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--navy);
  text-align: left;
  cursor: pointer;
  transition: background var(--transition);
}

.section-accordion__header:hover { background: #EDF2F7; }

.section-accordion__icon {
  font-size: 1.3rem;
  flex-shrink: 0;
}

.section-accordion__chevron {
  margin-left: auto;
  width: 18px;
  height: 18px;
  border: 2px solid var(--text-muted);
  border-top: none;
  border-left: none;
  transform: rotate(45deg);
  transition: transform var(--transition);
  flex-shrink: 0;
}

.section-accordion.open .section-accordion__chevron {
  transform: rotate(-135deg);
}

.section-accordion.open .section-accordion__header {
  border-bottom-color: var(--border);
}

.section-accordion__body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.section-accordion.open .section-accordion__body {
  max-height: 5000px;
}

.section-accordion__content {
  padding: 1.5rem 1.25rem;
}

/* --- Info Boxes -------------------------------------------- */
.info-box {
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.25rem;
  font-size: 0.92rem;
  line-height: 1.6;
  border-left: 4px solid;
}

.info-box--tip {
  background: #F0FFF4;
  border-color: var(--green);
  color: #22543D;
}

.info-box--warning {
  background: #FFFBEB;
  border-color: var(--gold);
  color: #744210;
}

.info-box--info {
  background: #EBF8FF;
  border-color: var(--teal-light);
  color: #2A4365;
}

.info-box--danger {
  background: #FFF5F5;
  border-color: #E53E3E;
  color: #742A2A;
}

.info-box strong {
  display: block;
  margin-bottom: 0.25rem;
}

/* --- Tables ------------------------------------------------ */
.table-wrap {
  overflow-x: auto;
  margin-bottom: 1.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.table-wrap table { margin: 0; }

table th,
table td {
  padding: 0.75rem 1rem;
  text-align: left;
  font-size: 0.9rem;
  border-bottom: 1px solid var(--border);
}

table th {
  background: var(--bg-alt);
  font-weight: 700;
  color: var(--navy);
  white-space: nowrap;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

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

table tbody tr:hover { background: rgba(13,115,119,.03); }

/* Table collapse */
.table-collapsed tbody tr.table-hidden { display: none; }

.table-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  margin-top: 0.5rem;
  padding: 0.4rem 0.85rem;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--teal);
  background: rgba(13,115,119,.06);
  border: 1px solid rgba(13,115,119,.15);
  border-radius: 100px;
  cursor: pointer;
  transition: background var(--transition);
}

.table-toggle:hover { background: rgba(13,115,119,.12); }

/* --- Lists ------------------------------------------------- */
.styled-list {
  margin-bottom: 1.25rem;
}

.styled-list li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.5rem;
  font-size: 0.94rem;
  line-height: 1.6;
}

.styled-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55rem;
  width: 7px;
  height: 7px;
  background: var(--teal);
  border-radius: 50%;
}

.styled-list--check li::before {
  content: '\2713';
  background: none;
  color: var(--green);
  font-weight: 700;
  font-size: 0.9rem;
  top: 0;
  width: auto;
  height: auto;
}

.styled-list--ordered {
  counter-reset: list-counter;
}

.styled-list--ordered li {
  counter-increment: list-counter;
}

.styled-list--ordered li::before {
  content: counter(list-counter);
  background: var(--teal);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  top: 0.2rem;
}

/* --- Collapsible Content ----------------------------------- */
.collapsible {
  margin-bottom: 1rem;
}

.collapsible__toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1rem;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--teal);
  background: rgba(13,115,119,.06);
  border: 1px solid rgba(13,115,119,.12);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--transition);
}

.collapsible__toggle:hover { background: rgba(13,115,119,.12); }

.collapsible__toggle::before {
  content: '\25B6';
  font-size: 0.65rem;
  transition: transform var(--transition);
}

.collapsible.open .collapsible__toggle::before {
  transform: rotate(90deg);
}

.collapsible-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}

.collapsible.open .collapsible-content {
  max-height: 3000px;
}

.collapsible-content__inner {
  padding: 1rem 0;
}

/* --- Buttons ----------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.6rem 1.25rem;
  font-size: 0.9rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

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

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

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

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

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

.btn--sm {
  padding: 0.4rem 0.85rem;
  font-size: 0.82rem;
}

/* --- Back to Top ------------------------------------------- */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 44px;
  height: 44px;
  background: var(--teal);
  color: #fff;
  border: none;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity var(--transition), visibility var(--transition), transform var(--transition), background var(--transition);
  z-index: 900;
  cursor: pointer;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover { background: var(--teal-dark); }

/* --- Search Box -------------------------------------------- */
.search-box {
  position: relative;
  margin-bottom: 1.5rem;
}

.search-box__input {
  width: 100%;
  padding: 0.65rem 1rem 0.65rem 2.5rem;
  font-size: 0.9rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.search-box__input:focus {
  outline: none;
  border-color: var(--teal);
  box-shadow: 0 0 0 3px rgba(13,115,119,.1);
}

.search-box__icon {
  position: absolute;
  left: 0.85rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 0.9rem;
  pointer-events: none;
}

.search-results {
  margin-top: 0.5rem;
}

.search-highlight {
  background: rgba(196,166,53,.3);
  border-radius: 2px;
  padding: 0 2px;
}

/* --- Footer ------------------------------------------------ */
.footer {
  background: var(--navy);
  color: rgba(255,255,255,.7);
  padding: 3rem 1rem 1.5rem;
  margin-top: 3rem;
}

.footer__inner {
  max-width: 1200px;
  margin: 0 auto;
}

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

.footer__col-title {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--gold);
  margin-bottom: 0.75rem;
}

.footer__link {
  display: block;
  padding: 0.25rem 0;
  color: rgba(255,255,255,.6);
  font-size: 0.88rem;
  transition: color var(--transition);
}

.footer__link:hover { color: #fff; }

.footer__bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding-top: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.78rem;
  color: rgba(255,255,255,.45);
}

/* --- Badges & Tags ----------------------------------------- */
.badge {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  border-radius: 100px;
  background: rgba(13,115,119,.1);
  color: var(--teal-dark);
}

.badge--gold { background: rgba(196,166,53,.15); color: #8B7A1A; }
.badge--green { background: rgba(6,214,160,.12); color: #047857; }
.badge--navy { background: rgba(14,47,68,.1); color: var(--navy); }

/* --- Breadcrumbs ------------------------------------------- */
.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.82rem;
  color: var(--text-muted);
  padding: 0.75rem 0;
  flex-wrap: wrap;
}

.breadcrumbs a { color: var(--teal); font-weight: 600; }
.breadcrumbs a:hover { color: var(--teal-dark); }

.breadcrumbs__sep { color: var(--border); }

/* --- Tooltip ----------------------------------------------- */
.tooltip {
  position: relative;
  cursor: help;
  border-bottom: 1px dotted var(--text-muted);
}

.tooltip::after {
  content: attr(data-tip);
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--navy);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.35rem 0.65rem;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition), visibility var(--transition);
  z-index: 100;
  pointer-events: none;
}

.tooltip:hover::after {
  opacity: 1;
  visibility: visible;
}

/* --- Copy Button ------------------------------------------- */
.copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.3rem 0.6rem;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-muted);
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
}

.copy-btn:hover {
  color: var(--teal);
  border-color: var(--teal);
}

.copy-btn.copied {
  color: var(--green);
  border-color: var(--green);
}

/* --- Utility Classes --------------------------------------- */
.text-center { text-align: center; }
.text-muted  { color: var(--text-muted); }
.text-teal   { color: var(--teal); }
.text-gold   { color: var(--gold); }
.text-navy   { color: var(--navy); }
.text-sm     { font-size: 0.88rem; }
.font-bold   { font-weight: 700; }
.font-extra  { font-weight: 800; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.gap-3 { gap: 1.5rem; }

.hidden { display: none !important; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* --- Responsive: Tablet (640px+) --------------------------- */
@media (min-width: 640px) {
  .cards-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero h1 { font-size: 2.75rem; }
}

/* --- Responsive: Desktop (960px+) -------------------------- */
@media (min-width: 960px) {
  .cards-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .footer__grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .hero { padding: 4.5rem 2rem 3rem; }
  .hero h1 { font-size: 3rem; }
}

/* --- Responsive: Mobile (<768px) --------------------------- */
@media (max-width: 767px) {
  .hamburger { display: flex; }

  .navbar__links { display: none; }

  .layout {
    flex-direction: column;
  }

  .layout__sidebar {
    width: 100%;
    position: static;
    max-height: none;
    border-bottom: 1px solid var(--border);
    padding-bottom: 1rem;
    margin-bottom: 1rem;
  }

  .hero__stats { gap: 1.25rem; }

  h1 { font-size: 1.75rem; }
  h2 { font-size: 1.4rem; }
}

/* --- Responsive: Large Desktop (1200px+) ------------------- */
@media (min-width: 1200px) {
  .container { padding: 0 2rem; }
}

/* --- Print Styles ------------------------------------------ */
@media print {
  *,
  *::before,
  *::after {
    background: transparent !important;
    color: #000 !important;
    box-shadow: none !important;
    text-shadow: none !important;
  }

  body { font-size: 11pt; line-height: 1.5; }

  .super-nav,
  .navbar,
  .hamburger,
  .mobile-menu,
  .mobile-menu__overlay,
  .back-to-top,
  .search-box { display: none !important; }

  .hero {
    padding: 1rem 0;
    border-bottom: 2px solid #000;
  }

  .layout { display: block; }
  .layout__sidebar { display: none; }

  .card {
    border: 1px solid #ccc;
    break-inside: avoid;
    page-break-inside: avoid;
  }

  .accordion-body,
  .section-accordion__body,
  .collapsible-content {
    max-height: none !important;
    overflow: visible !important;
  }

  a[href]::after {
    content: " (" attr(href) ")";
    font-size: 0.8em;
    color: #555;
  }

  .footer { border-top: 1px solid #ccc; padding-top: 1rem; }
}

/* --- Dark Mode --------------------------------------------- */
@media (prefers-color-scheme: dark) {
  :root {
    --bg:         #1A202C;
    --bg-alt:     #2D3748;
    --text:       #E2E8F0;
    --text-muted: #A0AEC0;
    --border:     #4A5568;
    --shadow:     0 1px 3px rgba(0,0,0,.3), 0 1px 2px rgba(0,0,0,.2);
    --shadow-md:  0 4px 12px rgba(0,0,0,.4), 0 2px 4px rgba(0,0,0,.2);
  }

  h1, h2, h3, h4, h5, h6,
  .card__title,
  .accordion-header,
  .section-accordion__header { color: #E2E8F0; }

  .navbar {
    background: #2D3748;
    border-bottom-color: #4A5568;
  }

  .navbar__logo,
  .navbar__link { color: #E2E8F0; }

  .navbar__link:hover,
  .navbar__link--active { background: #4A5568; }

  .navbar__dropdown-menu {
    background: #2D3748;
    border-color: #4A5568;
  }

  .navbar__dropdown-menu a { color: #E2E8F0; }
  .navbar__dropdown-menu a:hover { background: #4A5568; }

  .mobile-menu { background: #2D3748; }

  .hamburger span { background: #E2E8F0; }

  .card {
    background: #2D3748;
    border-color: #4A5568;
  }

  .accordion-item {
    background: #2D3748;
    border-color: #4A5568;
  }

  .section-accordion {
    background: #2D3748;
    border-color: #4A5568;
  }

  .section-accordion__header {
    background: #1A202C;
  }

  .section-accordion__header:hover { background: #4A5568; }

  .info-box--tip   { background: rgba(6,214,160,.1);   color: #6EE7B7; }
  .info-box--warning { background: rgba(196,166,53,.1); color: #FCD34D; }
  .info-box--info  { background: rgba(17,153,158,.1);   color: #67E8F9; }
  .info-box--danger { background: rgba(229,62,62,.1);   color: #FCA5A5; }

  table th { background: #1A202C; color: #E2E8F0; }
  table tbody tr:hover { background: rgba(255,255,255,.03); }

  .search-box__input {
    background: #2D3748;
    border-color: #4A5568;
    color: #E2E8F0;
  }

  .sidebar-nav__link:hover { background: #4A5568; }
  .sidebar-nav__link--active { background: rgba(13,115,119,.15); }

  .badge { background: rgba(13,115,119,.2); }
}