/* 1. Variables */
:root {
  --bg-primary: #09090b;
  --bg-secondary: #111116;
  --bg-tertiary: #17151f;
  --bg-card: #15131c;
  --bg-card-hover: #1c1926;
  --purple-dark: #4520b8;
  --purple: #6d3bff;
  --purple-bright: #8b63ff;
  --purple-soft: #b9a5ff;
  --purple-pale: #d8d0ff;
  --text-primary: #f5f3ff;
  --text-secondary: #c9c4d8;
  --text-muted: #85818f;
  --border: rgba(109, 59, 255, 0.24);
  --border-soft: rgba(255, 255, 255, 0.08);
  --success: #6faf8a;
  --danger: #c96a7a;
  --sans: "IBM Plex Sans Thai", "Leelawadee UI", "Tahoma", sans-serif;
  --serif: "Noto Serif Thai", "Leelawadee UI", "Georgia", serif;
  --header-h: 4.5rem;
  --content: 72rem;
  --shadow: 0 18px 40px rgba(0, 0, 0, 0.28);
  --radius: 1.1rem;
}

/* 2. Base */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg-primary);
  color: var(--text-secondary);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.75;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
}

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

a {
  color: var(--purple-soft);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--purple-pale);
}

a[href="https://grandyachtclub.com/"] {
  color: var(--purple-soft);
  text-decoration: none;
}

a[href="https://grandyachtclub.com/"]:hover {
  color: var(--purple-pale);
  text-decoration: none;
}

button,
input {
  font: inherit;
}

p,
ul,
ol,
dl {
  margin: 0;
}

h1,
h2,
h3 {
  margin: 0;
  color: var(--text-primary);
  font-family: var(--serif);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.02em;
  overflow-wrap: break-word;
}

.wrap {
  width: min(var(--content), calc(100% - 2rem));
  margin-inline: auto;
}

.skip {
  position: absolute;
  left: 1rem;
  top: 0.6rem;
  z-index: 80;
  transform: translateY(-140%);
  background: var(--purple);
  color: #fff;
  padding: 0.55rem 0.8rem;
  border-radius: 0.6rem;
}

.skip:focus {
  transform: none;
}

/* 3. Typography */
.eyebrow {
  margin-bottom: 0.75rem;
  color: var(--purple-soft);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.lede {
  font-size: 1.12rem;
  color: var(--text-secondary);
}

.prose,
.stack {
  display: grid;
  gap: 1rem;
}

.note {
  color: var(--text-muted);
  font-size: 0.94rem;
}

/* 4. Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  height: var(--header-h);
  background: rgba(9, 9, 11, 0.88);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
}

.site-header.is-scrolled {
  border-bottom-color: var(--border-soft);
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-primary);
  text-decoration: none;
  min-width: 0;
}

.brand-mark {
  width: 2.4rem;
  height: 2.4rem;
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: 0.7rem;
  background: var(--bg-tertiary);
  color: var(--purple-soft);
}

.brand-name {
  display: block;
  font-family: var(--serif);
  font-size: 1.2rem;
  line-height: 1.15;
  white-space: nowrap;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.header-nav a:not(.btn) {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
}

.header-nav a:not(.btn):hover {
  color: var(--text-primary);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  min-height: 2.75rem;
  padding: 0.55rem 1rem;
  border-radius: 999px;
  border: 1px solid transparent;
  background: transparent;
  text-decoration: none;
  cursor: pointer;
  line-height: 1.2;
  appearance: none;
}

.btn-primary {
  background: var(--purple);
  color: #fff;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.08);
}

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

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

.btn-ghost:hover {
  background: rgba(109, 59, 255, 0.12);
  color: var(--text-primary);
}

/* 5. Hero */
.hero {
  position: relative;
  padding: 2.5rem 0 3.5rem;
  background:
    radial-gradient(ellipse 55% 70% at 85% 20%, rgba(109, 59, 255, 0.16), transparent 62%),
    var(--bg-primary);
}

.hero-grid {
  display: grid;
  gap: 2rem;
  align-items: center;
}

.hero h1 {
  font-size: clamp(2.7rem, 7vw, 5rem);
  letter-spacing: -0.04em;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.5rem;
  padding: 0;
  list-style: none;
}

.chip-row a {
  display: inline-flex;
  align-items: center;
  min-height: 2.2rem;
  padding: 0.2rem 0.75rem;
  border: 1px solid var(--border-soft);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.02);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.92rem;
}

.chip-row a:hover {
  border-color: var(--border);
  color: var(--text-primary);
}

.hero-frame {
  border-radius: 1.25rem;
  overflow: hidden;
  border: 1px solid var(--border);
  background: #050507;
  box-shadow: var(--shadow);
}

.hero-frame img,
.figure img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background: #0c0b10;
}

.hero-caption {
  margin-top: 0.7rem;
  color: var(--text-muted);
  font-size: 0.88rem;
}

/* 6. TOC */
.toc {
  padding: 1rem 0 3rem;
}

.toc-head {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: end;
  margin-bottom: 1.25rem;
}

.toc-grid {
  display: grid;
  gap: 0.7rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

.toc-grid a {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.85rem;
  align-items: center;
  min-height: 3.4rem;
  padding: 0.7rem 0.9rem;
  border-radius: 0.9rem;
  border: 1px solid var(--border-soft);
  background: var(--bg-card);
  color: var(--text-primary);
  text-decoration: none;
}

.toc-grid a:hover,
.toc-grid a.is-active {
  background: var(--bg-card-hover);
  border-color: var(--border);
}

.toc-grid a.is-active {
  box-shadow: inset 3px 0 0 var(--purple);
}

.toc-num {
  color: var(--purple-soft);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  letter-spacing: 0.04em;
}

/* 7. Sections */
.section {
  padding: 3.25rem 0;
  scroll-margin-top: 5.2rem;
}

.section.band {
  background: linear-gradient(180deg, rgba(17, 17, 22, 0.72), rgba(9, 9, 11, 0));
}

.section-index {
  margin: 0 0 0.35rem;
  color: var(--purple-soft);
  font-weight: 600;
  letter-spacing: 0.16em;
  font-size: 0.82rem;
}

.section h2 {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  max-width: 18ch;
}

.section-intro {
  max-width: 68ch;
  margin: 1rem 0 1.5rem;
}

.split {
  display: grid;
  gap: 1.5rem;
  align-items: start;
}

.figure {
  margin: 0;
}

.figure figcaption {
  margin-top: 0.65rem;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.callout {
  margin-top: 1.25rem;
  padding: 1rem 1.1rem;
  border-left: 3px solid var(--purple);
  background: var(--bg-tertiary);
  border-radius: 0 0.9rem 0.9rem 0;
}

.callout h3 {
  font-family: var(--sans);
  font-size: 1rem;
  margin-bottom: 0.4rem;
}

.fact-list {
  margin: 0.8rem 0 0;
  padding-left: 1.1rem;
  display: grid;
  gap: 0.35rem;
}

.pair {
  display: grid;
  gap: 1.15rem;
}

.panel h3 {
  font-size: 1.25rem;
  margin-bottom: 0.45rem;
}

@media (min-width: 800px) {
  .pair {
    grid-template-columns: 1fr 1fr;
  }
}

/* 8. Cards */
.card-grid,
.provider-grid,
.game-grid,
.choice-grid,
.feature-grid {
  display: grid;
  gap: 1.2rem;
  align-items: stretch;
}

.card,
.provider-card,
.game-card,
.choice-card,
.feature-card,
.dir-card {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  height: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  padding: 1.25rem 1.3rem 1.2rem;
}

.card:hover,
.provider-card:hover,
.game-card:hover,
.choice-card:hover,
.feature-card:hover,
.dir-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border);
}

.card h3,
.provider-card h3,
.game-card h3,
.choice-card h3,
.feature-card h3,
.dir-card h3 {
  font-size: 1.2rem;
  margin: 0;
}

.card > p,
.provider-card > p:not(.kicker),
.choice-card > p,
.feature-card > p {
  line-height: 1.7;
}

.icon-badge {
  width: 2.4rem;
  height: 2.4rem;
  display: grid;
  place-items: center;
  border-radius: 0.7rem;
  color: var(--purple-soft);
  background: rgba(109, 59, 255, 0.12);
  border: 1px solid var(--border);
}

.icon {
  width: 1.25rem;
  height: 1.25rem;
  display: block;
}

.meta {
  display: grid;
  gap: 0.75rem;
  margin-top: auto;
  padding-top: 0.85rem;
  border-top: 1px solid var(--border-soft);
  font-size: 0.95rem;
}

.meta div {
  display: grid;
  gap: 0.12rem;
}

.meta dt {
  color: var(--text-muted);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.meta dd {
  margin: 0;
  color: var(--text-primary);
  line-height: 1.55;
}

.badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  min-height: 1.5rem;
  padding: 0.05rem 0.5rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(109, 59, 255, 0.14);
  color: var(--purple-pale);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
}

/* 9. Tables */
.table-scroll {
  overflow-x: auto;
  margin-top: 1.35rem;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  background: var(--bg-card);
}

.scroll-hint {
  margin: 0 0 0.55rem;
  color: var(--text-muted);
  font-size: 0.85rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 44rem;
}

th,
td {
  padding: 0.9rem 1rem;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--border-soft);
}

th {
  background: #12101a;
  color: var(--purple-pale);
  font-weight: 600;
  font-size: 0.92rem;
}

tr:last-child td {
  border-bottom: 0;
}

.compare td:first-child {
  color: var(--text-primary);
  font-weight: 600;
  white-space: nowrap;
}

/* 10. Provider cards */
.provider-abstract {
  height: 0.35rem;
  margin: -1.25rem -1.3rem 0.2rem;
  border-radius: var(--radius) var(--radius) 0 0;
  background: linear-gradient(90deg, transparent, var(--purple), transparent);
  opacity: 0.85;
}

.provider-card:nth-child(2n) .provider-abstract {
  background: linear-gradient(90deg, var(--purple-dark), transparent 80%);
}

.provider-card:nth-child(3n) .provider-abstract {
  background: linear-gradient(90deg, transparent, var(--purple-bright));
}

.provider-card .kicker {
  color: var(--purple-soft);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* 11. Game directory */
.dir-tools {
  display: grid;
  gap: 0.8rem;
  margin-bottom: 1rem;
}

.search-label {
  display: block;
  margin-bottom: 0.35rem;
  color: var(--text-primary);
  font-size: 0.92rem;
}

#game-search {
  width: 100%;
  min-height: 2.9rem;
  padding: 0.55rem 0.8rem;
  border-radius: 0.8rem;
  border: 1px solid var(--border-soft);
  background: var(--bg-primary);
  color: var(--text-primary);
}

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.filters button {
  min-height: 2.3rem;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  border: 1px solid var(--border-soft);
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
}

.filters button[aria-pressed="true"] {
  background: rgba(109, 59, 255, 0.18);
  border-color: var(--border);
  color: var(--text-primary);
}

.dir-count {
  color: var(--text-muted);
  font-size: 0.92rem;
}

.dir-letter {
  margin: 1.2rem 0 0.55rem;
  color: var(--purple-soft);
  font-family: var(--serif);
  font-size: 1.4rem;
}

.dir-list {
  display: grid;
  gap: 1rem;
}

.dir-empty {
  padding: 1.2rem;
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  color: var(--text-secondary);
}

/* 12. FAQ */
.faq-list {
  display: grid;
  gap: 0.8rem;
}

.faq-item {
  border: 1px solid var(--border-soft);
  border-radius: 0.9rem;
  background: var(--bg-card);
  overflow: hidden;
}

.faq-item h3 {
  font-family: var(--sans);
  font-size: 1.02rem;
  font-weight: 500;
}

.faq-item button {
  width: 100%;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
  padding: 0.95rem 1rem;
  text-align: left;
  color: var(--text-primary);
  background: transparent;
  border: 0;
  cursor: pointer;
}

.faq-item button .chev {
  flex: 0 0 auto;
  transition: transform 0.2s ease;
}

.faq-item.is-open button .chev {
  transform: rotate(180deg);
}

.faq-panel {
  padding: 0 1rem 1rem;
  color: var(--text-secondary);
}

.faq-panel[hidden] {
  display: none;
}

/* 13. Modals */
dialog {
  width: min(40rem, calc(100vw - 2rem));
  max-height: min(82vh, 46rem);
  margin: auto;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 1.15rem;
  background: var(--bg-secondary);
  color: var(--text-secondary);
  box-shadow: var(--shadow);
}

dialog[open] {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

dialog::backdrop {
  background: rgba(0, 0, 0, 0.84);
}

.modal-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex: 0 0 auto;
  padding: 1rem 1rem 1rem 1.25rem;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-soft);
}

.modal-top h2 {
  flex: 1;
  min-width: 0;
  font-size: 1.28rem;
  line-height: 1.35;
}

.modal-close {
  flex: 0 0 2.5rem;
  width: 2.5rem;
  height: 2.5rem;
  display: grid;
  place-items: center;
  margin: 0;
  padding: 0;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg-tertiary);
  color: var(--text-primary);
  cursor: pointer;
  line-height: 0;
}

.modal-close .icon {
  width: 1rem;
  height: 1rem;
}

.modal-body {
  padding: 1rem 1.1rem 1.3rem;
  display: grid;
  gap: 0.8rem;
  overflow: auto;
}

.modal-body h3 {
  font-family: var(--sans);
  font-size: 1.02rem;
  margin-top: 0.4rem;
}

/* 14. Footer */
.site-footer {
  padding: 2.75rem 0 1.35rem;
  border-top: 1px solid var(--border-soft);
  background: #0c0c10;
}

.footer-grid {
  display: grid;
  gap: 1.5rem;
}

.footer-brand p {
  margin-top: 0.7rem;
  max-width: 36ch;
}

.footer-links {
  display: grid;
  gap: 0.45rem;
  list-style: none;
  padding: 0;
}

.footer-links a,
.footer-links button:not(.btn) {
  color: var(--text-secondary);
  text-decoration: none;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
  text-align: left;
}

.footer-links .btn {
  margin-top: 0.85rem;
}

.footer-links a:hover,
.footer-links button:not(.btn):hover {
  color: var(--text-primary);
}

.footer-label {
  margin-bottom: 0.55rem;
  color: var(--text-primary);
  font-weight: 600;
}

.legal-note {
  margin-top: 1.6rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-soft);
  color: var(--text-muted);
  font-size: 0.88rem;
}

@media (max-width: 1280px) {
  .legal-note {
    padding-right: 3.75rem;
  }
}

/* 15. Floating button */
.to-top {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 30;
  width: 2.75rem;
  height: 2.75rem;
  display: grid;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(21, 19, 28, 0.94);
  color: var(--purple-pale);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.2s ease, visibility 0.2s ease;
}

.to-top.is-visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

/* 16. Responsive */
@media (min-width: 700px) {
  .toc-grid,
  .card-grid,
  .feature-grid,
  .choice-grid,
  .dir-list {
    grid-template-columns: 1fr 1fr;
  }

  .footer-grid {
    grid-template-columns: 1.4fr 1fr 1fr;
  }
}

@media (min-width: 960px) {
  .hero-grid,
  .split {
    grid-template-columns: 1.05fr 0.95fr;
  }

  .split.reverse {
    grid-template-columns: 0.95fr 1.05fr;
  }

  .split.reverse .figure {
    order: -1;
  }

  .provider-grid,
  .game-grid {
    grid-template-columns: 1fr 1fr;
  }

  .scroll-hint {
    display: none;
  }
}

@media (min-width: 1200px) {
  .card-grid {
    grid-template-columns: 1fr 1fr 1fr;
  }
}

@media (max-width: 520px) {
  .header-nav a:not(.btn) {
    display: none;
  }

  .brand-name {
    font-size: 1.02rem;
  }

  .btn {
    padding-inline: 0.75rem;
    font-size: 0.92rem;
  }
}

/* 17. Accessibility */
:focus-visible {
  outline: 2px solid var(--purple-bright);
  outline-offset: 3px;
}

.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;
}

@media (hover: hover) and (pointer: fine) {
  .card,
  .provider-card,
  .game-card,
  .choice-card,
  .feature-card,
  .dir-card,
  .toc-grid a,
  .btn {
    transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease, color 0.2s ease;
  }

  .card:hover,
  .provider-card:hover,
  .game-card:hover,
  .choice-card:hover,
  .dir-card:hover {
    transform: translateY(-2px);
  }
}

/* 18. Reduced motion */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  .card:hover,
  .provider-card:hover,
  .game-card:hover,
  .choice-card:hover,
  .dir-card:hover {
    transform: none;
  }
}