/* ==========================================================================
   BRITISHGABION DESIGN SYSTEM — ISOMETRIC DEEP OCEAN THEME
   Prefix: bia-
   WCAG Contrast: Compliant (>= 5.5:1 on primary buttons)
   ========================================================================== */

:root {
  --bia-bg: #051011;
  --bia-surface: #0d2226;
  --bia-surface-border: rgba(15, 191, 124, 0.22);
  --bia-primary: #0fbf7c;
  --bia-primary-hover: #15dd83;
  --bia-btn-text: #0b0f17;
  --bia-accent: #0876ca;
  --bia-text-main: #f0fcf8;
  --bia-text-muted: #7ea3a6;
  --bia-card-shadow: 0 10px 30px rgba(0, 0, 0, 0.5), 0 0 15px rgba(15, 191, 124, 0.12);
  --bia-radius: 14px;
  --bia-header-bg: rgba(5, 16, 17, 0.94);
  --bia-font-heading: 'Bebas Neue', sans-serif;
  --bia-font-body: 'Montserrat', sans-serif;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--bia-bg);
  color: var(--bia-text-main);
}

body {
  font-family: var(--bia-font-body);
  font-weight: 400;
  line-height: 1.65;
  background-color: var(--bia-bg);
  color: var(--bia-text-main);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography Headings */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--bia-font-heading);
  letter-spacing: 0.04em;
  font-weight: 400;
  line-height: 1.15;
  color: var(--bia-text-main);
  text-transform: uppercase;
}

p {
  margin-bottom: 1rem;
}

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

a {
  color: var(--bia-primary);
  text-decoration: none;
  transition: color 0.2s ease, opacity 0.2s ease;
}

a:hover {
  color: var(--bia-primary-hover);
}

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

/* Containers */
.bia-shell {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

.bia-sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* Buttons */
.bia-btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 28px;
  background: var(--bia-primary);
  color: var(--bia-btn-text) !important;
  font-family: var(--bia-font-body);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  border-radius: var(--bia-radius);
  border: 1px solid var(--bia-primary);
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 4px 14px rgba(15, 191, 124, 0.3);
  text-align: center;
  text-decoration: none;
}

.bia-btn-primary:hover {
  background: var(--bia-primary-hover);
  border-color: var(--bia-primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(15, 191, 124, 0.45);
}

.bia-btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 28px;
  background: transparent;
  color: var(--bia-text-main) !important;
  font-family: var(--bia-font-body);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  border-radius: var(--bia-radius);
  border: 1px solid var(--bia-surface-border);
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: center;
  text-decoration: none;
}

.bia-btn-outline:hover {
  border-color: var(--bia-primary);
  background: rgba(15, 191, 124, 0.08);
  color: var(--bia-primary) !important;
  transform: translateY(-2px);
}

.bia-btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 16px;
  background: transparent;
  color: var(--bia-text-muted);
  font-family: var(--bia-font-body);
  font-weight: 600;
  font-size: 0.85rem;
  border: none;
  cursor: pointer;
  border-radius: calc(var(--bia-radius) - 4px);
  transition: color 0.2s ease, background 0.2s ease;
}

.bia-btn-ghost:hover {
  color: var(--bia-text-main);
  background: rgba(255, 255, 255, 0.05);
}

.bia-btn-sm {
  padding: 8px 16px;
  font-size: 0.82rem;
}

.bia-btn-lg {
  padding: 16px 34px;
  font-size: 1.05rem;
}

/* Badges & Tags */
.bia-eyebrow {
  display: inline-block;
  font-family: var(--bia-font-body);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--bia-primary);
  margin-bottom: 10px;
}

.bia-badge-mini {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--bia-primary);
  background: rgba(15, 191, 124, 0.12);
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--bia-surface-border);
}

.bia-section-heading {
  font-size: clamp(2rem, 3.8vw, 3rem);
  margin-bottom: 14px;
}

.bia-section-subheading {
  font-size: 1.05rem;
  color: var(--bia-text-muted);
  max-width: 680px;
  margin-bottom: 32px;
}

.bia-section-head {
  margin-bottom: 48px;
}

.bia-section-head.bia-text-center {
  text-align: center;
}

.bia-section-head.bia-text-center .bia-section-subheading {
  margin-left: auto;
  margin-right: auto;
}

.bia-section {
  padding: 84px 0;
  position: relative;
}

/* Header & Nav */
.bia-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--bia-header-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--bia-surface-border);
  transition: background 0.3s ease;
}

.bia-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.bia-brand-link {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.bia-brand-emblem {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.bia-brand-emblem img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.bia-brand-text {
  font-family: var(--bia-font-heading);
  font-size: 1.8rem;
  letter-spacing: 0.06em;
  color: var(--bia-text-main);
  line-height: 1;
}

.bia-accent-text {
  color: var(--bia-primary);
}

.bia-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.bia-nav-list {
  display: flex;
  align-items: center;
  gap: 24px;
  list-style: none;
}

.bia-nav-link {
  font-family: var(--bia-font-body);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--bia-text-muted);
  transition: color 0.2s ease;
  padding: 6px 0;
  position: relative;
}

.bia-nav-link:hover,
.bia-nav-link.bia-active {
  color: var(--bia-primary);
}

.bia-nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--bia-primary);
  transition: width 0.2s ease;
}

.bia-nav-link:hover::after,
.bia-nav-link.bia-active::after {
  width: 100%;
}

.bia-header-cta {
  display: flex;
  align-items: center;
  gap: 16px;
}

.bia-burger-btn {
  display: none;
  background: transparent;
  border: 1px solid var(--bia-surface-border);
  border-radius: 8px;
  padding: 8px;
  cursor: pointer;
  flex-direction: column;
  gap: 5px;
  width: 40px;
  height: 40px;
  justify-content: center;
  align-items: center;
}

.bia-burger-btn span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--bia-text-main);
  transition: all 0.3s ease;
}

.bia-burger-btn.bia-is-active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.bia-burger-btn.bia-is-active span:nth-child(2) {
  opacity: 0;
}

.bia-burger-btn.bia-is-active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Nav Drawer */
.bia-mobile-menu {
  display: none;
  background: var(--bia-surface);
  border-bottom: 1px solid var(--bia-surface-border);
  padding: 24px;
}

.bia-mobile-menu.bia-open {
  display: block;
}

.bia-mobile-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.bia-mobile-link {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--bia-text-main);
  display: block;
  padding: 8px 0;
}

.bia-mobile-link:hover {
  color: var(--bia-primary);
}

/* Hero Section */
.bia-hero-section {
  padding: 96px 0 80px;
  background: radial-gradient(circle at 80% 20%, rgba(8, 118, 202, 0.15) 0%, transparent 50%),
              radial-gradient(circle at 10% 80%, rgba(15, 191, 124, 0.12) 0%, transparent 45%);
  border-bottom: 1px solid var(--bia-surface-border);
  position: relative;
}

.bia-hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 56px;
  align-items: center;
}

.bia-hero-badge-wrap {
  margin-bottom: 20px;
}

.bia-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: rgba(15, 191, 124, 0.1);
  border: 1px solid var(--bia-surface-border);
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--bia-primary);
  text-transform: uppercase;
}

.bia-hero-headline {
  font-size: clamp(2.4rem, 5vw, 4rem);
  line-height: 1.06;
  margin-bottom: 20px;
  color: var(--bia-text-main);
}

.bia-hero-subline {
  font-size: 1.12rem;
  color: var(--bia-text-muted);
  line-height: 1.7;
  margin-bottom: 32px;
  max-width: 580px;
}

.bia-hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 36px;
}

.bia-trust-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.bia-trust-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--bia-text-main);
  background: rgba(255, 255, 255, 0.03);
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.07);
}

.bia-trust-dot {
  width: 8px;
  height: 8px;
  background: var(--bia-primary);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--bia-primary);
}

.bia-hero-stats-panel {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.bia-hero-stat-card {
  background: var(--bia-surface);
  border: 1px solid var(--bia-surface-border);
  border-radius: var(--bia-radius);
  padding: 28px;
  box-shadow: var(--bia-card-shadow);
  position: relative;
  overflow: hidden;
}

.bia-hero-stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--bia-primary);
}

.bia-stat-card-accent::before {
  background: var(--bia-accent);
}

.bia-stat-label {
  display: block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--bia-text-muted);
  text-transform: uppercase;
  margin-bottom: 8px;
}

.bia-stat-value {
  display: block;
  font-family: var(--bia-font-heading);
  font-size: 2.6rem;
  line-height: 1.1;
  color: var(--bia-text-main);
  margin-bottom: 8px;
}

.bia-stat-note {
  font-size: 0.9rem;
  color: var(--bia-text-muted);
  line-height: 1.5;
}

.bia-hero-mini-telemetry {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  background: rgba(13, 34, 38, 0.6);
  border: 1px dashed var(--bia-surface-border);
  border-radius: var(--bia-radius);
  padding: 18px 24px;
}

.bia-telemetry-key {
  display: block;
  font-size: 0.78rem;
  color: var(--bia-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 4px;
}

.bia-telemetry-val {
  font-family: var(--bia-font-heading);
  font-size: 1.25rem;
  color: var(--bia-primary);
}

/* Advantages / Features Grid */
.bia-advantages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.bia-adv-card {
  background: var(--bia-surface);
  border: 1px solid var(--bia-surface-border);
  border-radius: var(--bia-radius);
  padding: 32px 28px;
  transition: transform 0.25s ease, border-color 0.25s ease;
  position: relative;
}

.bia-adv-card:hover {
  transform: translateY(-4px);
  border-color: var(--bia-primary);
}

.bia-adv-num {
  font-family: var(--bia-font-heading);
  font-size: 2rem;
  color: var(--bia-primary);
  margin-bottom: 12px;
  opacity: 0.85;
}

.bia-adv-title {
  font-size: 1.35rem;
  margin-bottom: 12px;
  color: var(--bia-text-main);
}

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

/* Catalog Filter Bar */
.bia-catalog-head {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.bia-filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 12px;
}

.bia-filter-btn {
  padding: 9px 20px;
  background: var(--bia-surface);
  border: 1px solid var(--bia-surface-border);
  border-radius: 999px;
  color: var(--bia-text-muted);
  font-family: var(--bia-font-body);
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.03em;
  cursor: pointer;
  transition: all 0.2s ease;
}

.bia-filter-btn:hover {
  color: var(--bia-text-main);
  border-color: var(--bia-primary);
}

.bia-filter-btn.bia-active {
  background: var(--bia-primary);
  color: var(--bia-btn-text);
  border-color: var(--bia-primary);
  font-weight: 700;
}

/* Games Grid */
.bia-games-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.bia-game-card {
  background: var(--bia-surface);
  border: 1px solid var(--bia-surface-border);
  border-radius: var(--bia-radius);
  overflow: hidden;
  box-shadow: var(--bia-card-shadow);
  display: flex;
  flex-direction: column;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.bia-game-card:hover {
  transform: translateY(-5px);
  border-color: var(--bia-primary);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.6), 0 0 20px rgba(15, 191, 124, 0.2);
}

.bia-card-media {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #020808;
}

.bia-card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.bia-game-card:hover .bia-card-img {
  transform: scale(1.05);
}

.bia-card-badges {
  position: absolute;
  top: 14px;
  left: 14px;
  display: flex;
  gap: 8px;
  z-index: 2;
}

.bia-badge-top {
  background: var(--bia-primary);
  color: var(--bia-btn-text);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 6px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
}

.bia-badge-score {
  background: rgba(5, 16, 17, 0.85);
  backdrop-filter: blur(4px);
  color: var(--bia-text-main);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 6px;
  border: 1px solid var(--bia-surface-border);
}

.bia-badge-players {
  position: absolute;
  bottom: 12px;
  right: 12px;
  background: rgba(5, 16, 17, 0.85);
  backdrop-filter: blur(4px);
  color: var(--bia-primary);
  font-size: 0.74rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 6px;
  border: 1px solid var(--bia-surface-border);
}

.bia-card-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.bia-card-meta {
  margin-bottom: 8px;
}

.bia-card-genre {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--bia-primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.bia-card-title {
  font-size: 1.5rem;
  margin-bottom: 10px;
  color: var(--bia-text-main);
}

.bia-card-desc {
  font-size: 0.9rem;
  color: var(--bia-text-muted);
  line-height: 1.55;
  margin-bottom: 18px;
  flex-grow: 1;
}

.bia-card-features {
  list-style: none;
  margin-bottom: 22px;
  padding-top: 14px;
  border-top: 1px solid rgba(126, 163, 166, 0.15);
}

.bia-card-features li {
  font-size: 0.82rem;
  color: var(--bia-text-main);
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.bia-card-features li::before {
  content: '✓';
  color: var(--bia-primary);
  font-weight: 800;
}

.bia-card-footer {
  margin-top: auto;
}

.bia-btn-play {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 12px 20px;
  background: var(--bia-primary);
  color: var(--bia-btn-text) !important;
  font-family: var(--bia-font-body);
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border-radius: calc(var(--bia-radius) - 4px);
  text-align: center;
  transition: all 0.2s ease;
  text-decoration: none;
}

.bia-btn-play:hover {
  background: var(--bia-primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(15, 191, 124, 0.35);
}

/* Essay Cards (Intro & Architecture) */
.bia-essays-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.bia-essay-card {
  background: var(--bia-surface);
  border: 1px solid var(--bia-surface-border);
  border-radius: var(--bia-radius);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
}

.bia-essay-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(15, 191, 124, 0.12);
  color: var(--bia-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 20px;
}

.bia-essay-title {
  font-size: 1.4rem;
  margin-bottom: 12px;
  color: var(--bia-text-main);
}

.bia-essay-focus {
  font-size: 0.92rem;
  color: var(--bia-text-muted);
  line-height: 1.6;
  margin-bottom: 20px;
  flex-grow: 1;
}

.bia-essay-points {
  list-style: none;
  border-top: 1px solid rgba(126, 163, 166, 0.15);
  padding-top: 16px;
}

.bia-essay-points li {
  font-size: 0.84rem;
  color: var(--bia-text-main);
  margin-bottom: 8px;
  padding-left: 18px;
  position: relative;
}

.bia-essay-points li::before {
  content: '▸';
  color: var(--bia-primary);
  position: absolute;
  left: 0;
  top: 0;
}

/* Methodology & Approach */
.bia-approach-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-bottom: 40px;
}

.bia-step-card {
  background: var(--bia-surface);
  border: 1px solid var(--bia-surface-border);
  border-radius: var(--bia-radius);
  padding: 32px 28px;
  position: relative;
}

.bia-step-num {
  font-family: var(--bia-font-heading);
  font-size: 3rem;
  line-height: 1;
  color: var(--bia-primary);
  opacity: 0.6;
  margin-bottom: 14px;
}

.bia-step-title {
  font-size: 1.35rem;
  margin-bottom: 12px;
}

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

.bia-alert-banner {
  background: rgba(13, 34, 38, 0.9);
  border: 1px solid var(--bia-primary);
  border-radius: var(--bia-radius);
  padding: 24px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.bia-alert-text strong {
  color: var(--bia-primary);
  display: block;
  margin-bottom: 4px;
  font-size: 1.05rem;
}

.bia-alert-text p {
  color: var(--bia-text-main);
  font-size: 0.92rem;
  margin: 0;
}

/* 6 Pillars / Metrics */
.bia-pillars-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.bia-pillar-card {
  background: var(--bia-surface);
  border: 1px solid var(--bia-surface-border);
  border-radius: var(--bia-radius);
  padding: 28px;
  display: flex;
  gap: 20px;
}

.bia-pillar-badge {
  font-family: var(--bia-font-heading);
  font-size: 1.8rem;
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: rgba(15, 191, 124, 0.12);
  color: var(--bia-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.bia-pillar-title {
  font-size: 1.25rem;
  margin-bottom: 8px;
}

.bia-pillar-desc {
  font-size: 0.88rem;
  color: var(--bia-text-muted);
  line-height: 1.55;
}

/* Spotlight Section */
.bia-spotlight-box {
  background: var(--bia-surface);
  border: 1px solid var(--bia-primary);
  border-radius: var(--bia-radius);
  padding: 48px;
  box-shadow: var(--bia-card-shadow);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.bia-spotlight-visual {
  border-radius: var(--bia-radius);
  overflow: hidden;
  border: 1px solid var(--bia-surface-border);
  aspect-ratio: 16 / 10;
}

.bia-spotlight-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.bia-spotlight-score-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bia-primary);
  color: var(--bia-btn-text);
  font-weight: 800;
  font-size: 0.85rem;
  padding: 6px 14px;
  border-radius: 6px;
  margin-bottom: 16px;
  text-transform: uppercase;
}

.bia-spotlight-title {
  font-size: clamp(2rem, 3.5vw, 2.8rem);
  margin-bottom: 16px;
}

.bia-spotlight-desc {
  font-size: 1rem;
  color: var(--bia-text-muted);
  line-height: 1.7;
  margin-bottom: 24px;
}

.bia-spotlight-highlights {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 32px;
}

.bia-spotlight-item {
  background: rgba(5, 16, 17, 0.6);
  padding: 14px 18px;
  border-radius: 8px;
  border: 1px solid var(--bia-surface-border);
}

.bia-spotlight-item strong {
  display: block;
  font-size: 0.82rem;
  color: var(--bia-primary);
  text-transform: uppercase;
  margin-bottom: 4px;
}

.bia-spotlight-item span {
  font-size: 0.88rem;
  color: var(--bia-text-main);
}

/* Mechanics / Styles (6 Cards) */
.bia-mechanics-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.bia-mech-card {
  background: var(--bia-surface);
  border: 1px solid var(--bia-surface-border);
  border-radius: var(--bia-radius);
  padding: 28px;
  transition: transform 0.2s ease;
}

.bia-mech-card:hover {
  transform: translateY(-3px);
  border-color: var(--bia-primary);
}

.bia-mech-tag {
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--bia-accent);
  margin-bottom: 8px;
  display: block;
}

.bia-mech-title {
  font-size: 1.3rem;
  margin-bottom: 10px;
}

.bia-mech-desc {
  font-size: 0.88rem;
  color: var(--bia-text-muted);
  line-height: 1.55;
}

/* Platforms & Sessions (3-Column Grids) */
.bia-tri-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.bia-info-card {
  background: var(--bia-surface);
  border: 1px solid var(--bia-surface-border);
  border-radius: var(--bia-radius);
  padding: 32px 28px;
}

.bia-info-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.bia-info-badge {
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--bia-primary);
  background: rgba(15, 191, 124, 0.1);
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--bia-surface-border);
}

.bia-info-title {
  font-size: 1.35rem;
  margin-bottom: 12px;
}

.bia-info-desc {
  font-size: 0.9rem;
  color: var(--bia-text-muted);
  line-height: 1.6;
}

/* About Section */
.bia-about-box {
  background: var(--bia-surface);
  border: 1px solid var(--bia-surface-border);
  border-radius: var(--bia-radius);
  padding: 48px;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 48px;
}

.bia-about-title {
  font-size: 2.2rem;
  margin-bottom: 16px;
}

.bia-about-text {
  font-size: 0.98rem;
  color: var(--bia-text-muted);
  line-height: 1.7;
  margin-bottom: 20px;
}

.bia-about-stats {
  display: flex;
  flex-direction: column;
  gap: 16px;
  justify-content: center;
}

.bia-about-stat-row {
  background: rgba(5, 16, 17, 0.6);
  padding: 18px 24px;
  border-radius: var(--bia-radius);
  border: 1px solid var(--bia-surface-border);
}

.bia-about-stat-row strong {
  display: block;
  font-family: var(--bia-font-heading);
  font-size: 1.8rem;
  color: var(--bia-primary);
  line-height: 1;
  margin-bottom: 4px;
}

.bia-about-stat-row span {
  font-size: 0.85rem;
  color: var(--bia-text-muted);
}

/* FAQ Accordion */
.bia-faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.bia-faq-item {
  background: var(--bia-surface);
  border: 1px solid var(--bia-surface-border);
  border-radius: var(--bia-radius);
  overflow: hidden;
  transition: border-color 0.2s ease;
}

.bia-faq-item.bia-open {
  border-color: var(--bia-primary);
}

.bia-faq-question {
  width: 100%;
  padding: 22px 28px;
  background: transparent;
  border: none;
  color: var(--bia-text-main);
  font-family: var(--bia-font-body);
  font-size: 1.05rem;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.bia-faq-icon {
  font-size: 1.4rem;
  font-weight: 400;
  color: var(--bia-primary);
  transition: transform 0.3s ease;
  flex-shrink: 0;
}

.bia-faq-item.bia-open .bia-faq-icon {
  transform: rotate(45deg);
}

.bia-faq-answer {
  padding: 0 28px 24px;
  color: var(--bia-text-muted);
  font-size: 0.95rem;
  line-height: 1.65;
  display: none;
}

.bia-faq-item.bia-open .bia-faq-answer {
  display: block;
}

/* Bottom CTA Banner */
.bia-cta-banner {
  background: linear-gradient(135deg, #0d2226 0%, #06191d 100%);
  border: 1px solid var(--bia-surface-border);
  border-radius: var(--bia-radius);
  padding: 56px 48px;
  text-align: center;
  box-shadow: var(--bia-card-shadow);
  position: relative;
  overflow: hidden;
}

.bia-cta-banner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--bia-accent), var(--bia-primary));
}

.bia-cta-title {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 14px;
}

.bia-cta-desc {
  font-size: 1.05rem;
  color: var(--bia-text-muted);
  max-width: 620px;
  margin: 0 auto 28px;
}

/* Contact Section & Form */
.bia-contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 48px;
  align-items: flex-start;
}

.bia-contact-info-panel {
  background: var(--bia-surface);
  border: 1px solid var(--bia-surface-border);
  border-radius: var(--bia-radius);
  padding: 40px;
}

.bia-contact-info-item {
  margin-bottom: 24px;
}

.bia-contact-info-item:last-child {
  margin-bottom: 0;
}

.bia-contact-info-label {
  display: block;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--bia-primary);
  margin-bottom: 6px;
}

.bia-contact-info-val {
  font-size: 1rem;
  color: var(--bia-text-main);
  line-height: 1.5;
}

.bia-contact-form-box {
  background: var(--bia-surface);
  border: 1px solid var(--bia-surface-border);
  border-radius: var(--bia-radius);
  padding: 40px;
}

.bia-form-group {
  margin-bottom: 20px;
}

.bia-form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--bia-text-main);
}

.bia-form-control {
  width: 100%;
  padding: 13px 16px;
  background: rgba(5, 16, 17, 0.8);
  border: 1px solid var(--bia-surface-border);
  border-radius: calc(var(--bia-radius) - 6px);
  color: var(--bia-text-main);
  font-family: var(--bia-font-body);
  font-size: 0.95rem;
  transition: border-color 0.2s ease;
}

.bia-form-control:focus {
  outline: none;
  border-color: var(--bia-primary);
  box-shadow: 0 0 0 2px rgba(15, 191, 124, 0.2);
}

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

.bia-form-checkbox {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.85rem;
  color: var(--bia-text-muted);
}

.bia-form-checkbox input[type="checkbox"] {
  margin-top: 3px;
  accent-color: var(--bia-primary);
  width: 16px;
  height: 16px;
}

.bia-form-success {
  display: none;
  background: rgba(15, 191, 124, 0.15);
  border: 1px solid var(--bia-primary);
  color: var(--bia-primary);
  padding: 14px 18px;
  border-radius: 8px;
  margin-top: 16px;
  font-size: 0.9rem;
}

/* Footer */
.bia-site-footer {
  background: #020808;
  border-top: 1px solid var(--bia-surface-border);
  padding: 64px 0 32px;
  margin-top: 48px;
}

/* Bulletin Newsletter Panel in Footer */
.bia-newsletter-panel {
  background: var(--bia-surface);
  border: 1px solid var(--bia-surface-border);
  border-radius: var(--bia-radius);
  padding: 36px 40px;
  margin-bottom: 48px;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 32px;
  align-items: center;
}

.bia-newsletter-heading {
  font-size: 1.8rem;
  margin-bottom: 8px;
}

.bia-newsletter-sub {
  font-size: 0.92rem;
  color: var(--bia-text-muted);
  margin: 0;
}

.bia-newsletter-input-row {
  display: flex;
  gap: 10px;
}

.bia-newsletter-input-row input {
  flex-grow: 1;
  padding: 12px 16px;
  background: var(--bia-bg);
  border: 1px solid var(--bia-surface-border);
  border-radius: calc(var(--bia-radius) - 6px);
  color: var(--bia-text-main);
  font-family: var(--bia-font-body);
  font-size: 0.9rem;
}

.bia-newsletter-input-row input:focus {
  outline: none;
  border-color: var(--bia-primary);
}

.bia-newsletter-error {
  color: #ff4757;
  font-size: 0.82rem;
  margin-top: 6px;
}

/* Fixed Newsletter Toast Notification */
#DetxgY66zqCiIQ3wSzj {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  display: none;
  max-width: 360px;
  background: var(--bia-surface);
  border: 1px solid var(--bia-primary);
  border-radius: var(--bia-radius);
  padding: 16px 20px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.6);
}

.bia-toast-inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.bia-toast-title {
  display: block;
  font-size: 0.95rem;
  color: var(--bia-primary);
  margin-bottom: 4px;
}

.bia-toast-desc {
  font-size: 0.82rem;
  color: var(--bia-text-muted);
  line-height: 1.4;
  margin: 0;
}

.bia-toast-close {
  background: transparent;
  border: none;
  color: var(--bia-text-muted);
  font-size: 1.4rem;
  cursor: pointer;
  line-height: 1;
}

.bia-toast-close:hover {
  color: var(--bia-text-main);
}

/* Footer Main Grid */
.bia-footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.bia-footer-brand-col .bia-brand-link {
  margin-bottom: 16px;
}

.bia-footer-about {
  font-size: 0.88rem;
  color: var(--bia-text-muted);
  line-height: 1.6;
  margin-bottom: 20px;
}

.bia-footer-contact-list {
  font-size: 0.85rem;
  color: var(--bia-text-muted);
  line-height: 1.7;
}

.bia-footer-contact-list strong {
  color: var(--bia-text-main);
}

.bia-footer-heading {
  font-size: 1.3rem;
  margin-bottom: 18px;
  color: var(--bia-text-main);
}

.bia-footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.bia-footer-links li a {
  font-size: 0.88rem;
  color: var(--bia-text-muted);
  transition: color 0.2s ease;
}

.bia-footer-links li a:hover {
  color: var(--bia-primary);
}

.bia-footer-link-btn {
  background: transparent;
  border: none;
  color: var(--bia-text-muted);
  font-family: var(--bia-font-body);
  font-size: 0.88rem;
  cursor: pointer;
  padding: 0;
  text-align: left;
  transition: color 0.2s ease;
}

.bia-footer-link-btn:hover {
  color: var(--bia-primary);
  text-decoration: underline;
}

.bia-footer-disclosure {
  border-top: 1px solid rgba(126, 163, 166, 0.12);
  padding: 24px 0;
  font-size: 0.82rem;
  color: var(--bia-text-muted);
  line-height: 1.65;
}

.bia-footer-bottom {
  border-top: 1px solid rgba(126, 163, 166, 0.12);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.82rem;
  color: var(--bia-text-muted);
}

.bia-footer-badges {
  display: flex;
  gap: 10px;
}

.bia-tech-pill {
  font-size: 0.72rem;
  background: var(--bia-surface);
  border: 1px solid var(--bia-surface-border);
  padding: 4px 10px;
  border-radius: 999px;
  color: var(--bia-primary);
}

/* Panel Overlay */
.bia-panel-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(6px);
  z-index: 9998;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.bia-panel-backdrop.bia-panel-open {
  display: flex;
}

.bia-panel-card {
  background: var(--bia-surface);
  border: 1px solid var(--bia-surface-border);
  border-radius: var(--bia-radius);
  max-width: 640px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.8);
  padding: 32px;
}

.bia-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--bia-surface-border);
}

.bia-panel-title {
  font-size: 1.6rem;
  margin: 0;
}

.bia-panel-close {
  background: transparent;
  border: none;
  color: var(--bia-text-muted);
  font-size: 1.8rem;
  cursor: pointer;
  line-height: 1;
}

.bia-panel-close:hover {
  color: var(--bia-text-main);
}

.bia-panel-body {
  font-size: 0.92rem;
  color: var(--bia-text-muted);
  line-height: 1.7;
}

.bia-panel-list {
  list-style: none;
  margin-top: 16px;
}

.bia-panel-list li {
  margin-bottom: 12px;
  padding-left: 20px;
  position: relative;
}

.bia-panel-list li::before {
  content: '✓';
  color: var(--bia-primary);
  font-weight: 700;
  position: absolute;
  left: 0;
  top: 0;
}

.bia-panel-footer {
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--bia-surface-border);
  text-align: right;
}

/* Cookie Dock Banner */
.bia-cookie-dock {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 9990;
  background: rgba(5, 16, 17, 0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid var(--bia-primary);
  box-shadow: 0 -10px 30px rgba(0, 0, 0, 0.7);
  padding: 24px 0;
  display: none;
  opacity: 0;
  visibility: hidden;
  transform: translateY(100%);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.bia-cookie-active {
  display: block !important;
  opacity: 1 !important;
  visibility: visible !important;
  transform: translateY(0) !important;
}

.bia-cookie-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.bia-cookie-tag {
  display: block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--bia-primary);
  text-transform: uppercase;
  margin-bottom: 4px;
}

.bia-cookie-title {
  font-size: 1.3rem;
  margin-bottom: 6px;
}

.bia-cookie-text {
  font-size: 0.85rem;
  color: var(--bia-text-muted);
  line-height: 1.5;
  margin: 0;
  max-width: 780px;
}

.bia-cookie-actions {
  display: flex;
  gap: 10px;
  flex-shrink: 0;
}

/* Scroll To Top Button */
.bia-scroll-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--bia-surface);
  border: 1px solid var(--bia-surface-border);
  color: var(--bia-primary);
  font-size: 1.2rem;
  font-weight: 700;
  display: none;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 900;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
  transition: all 0.2s ease;
}

.bia-scroll-top:hover {
  background: var(--bia-primary);
  color: var(--bia-btn-text);
  transform: translateY(-2px);
}

/* Legal Pages Styling */
.bia-legal-page {
  padding: 64px 0 96px;
}

.bia-legal-header {
  margin-bottom: 48px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--bia-surface-border);
}

.bia-legal-title {
  font-size: clamp(2.4rem, 4.5vw, 3.5rem);
  margin-bottom: 12px;
}

.bia-legal-meta {
  font-size: 0.88rem;
  color: var(--bia-text-muted);
}

.bia-legal-body {
  max-width: 880px;
  background: var(--bia-surface);
  border: 1px solid var(--bia-surface-border);
  border-radius: var(--bia-radius);
  padding: 48px;
  box-shadow: var(--bia-card-shadow);
}

.bia-legal-section {
  margin-bottom: 36px;
}

.bia-legal-section:last-child {
  margin-bottom: 0;
}

.bia-legal-section h2 {
  font-size: 1.6rem;
  margin-bottom: 16px;
  color: var(--bia-primary);
}

.bia-legal-section p, .bia-legal-section li {
  font-size: 0.95rem;
  color: var(--bia-text-muted);
  line-height: 1.7;
  margin-bottom: 12px;
}

.bia-legal-section ul {
  padding-left: 20px;
  margin-bottom: 16px;
}

.bia-legal-box {
  background: rgba(5, 16, 17, 0.6);
  border: 1px solid var(--bia-surface-border);
  border-radius: 8px;
  padding: 20px 24px;
  margin-top: 16px;
}

.bia-legal-box strong {
  color: var(--bia-text-main);
}

/* 404 Page */
.bia-error-hero {
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 80px 20px;
}

.bia-error-code {
  font-family: var(--bia-font-heading);
  font-size: clamp(6rem, 15vw, 10rem);
  color: var(--bia-primary);
  line-height: 1;
  margin-bottom: 16px;
}

.bia-error-sub {
  font-size: 1.1rem;
  color: var(--bia-text-muted);
  max-width: 500px;
  margin: 0 auto 32px;
}

/* Responsive Media Queries */
@media (max-width: 1024px) {
  .bia-games-grid,
  .bia-essays-grid,
  .bia-approach-steps,
  .bia-pillars-grid,
  .bia-mechanics-grid,
  .bia-tri-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .bia-hero-grid,
  .bia-spotlight-box,
  .bia-about-box,
  .bia-contact-grid,
  .bia-newsletter-panel {
    grid-template-columns: 1fr;
    gap: 36px;
  }

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

@media (max-width: 768px) {
  .bia-nav {
    display: none;
  }

  .bia-burger-btn {
    display: flex;
  }

  .bia-games-grid,
  .bia-essays-grid,
  .bia-approach-steps,
  .bia-pillars-grid,
  .bia-mechanics-grid,
  .bia-tri-grid {
    grid-template-columns: 1fr;
  }

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

  .bia-cookie-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .bia-cookie-actions {
    width: 100%;
    flex-direction: column;
  }

  .bia-newsletter-input-row {
    flex-direction: column;
  }

  .bia-hero-mini-telemetry {
    grid-template-columns: 1fr;
  }

  .bia-spotlight-highlights {
    grid-template-columns: 1fr;
  }

  .bia-legal-body {
    padding: 28px 20px;
  }

  .bia-spotlight-box,
  .bia-about-box,
  .bia-contact-info-panel,
  .bia-contact-form-box {
    padding: 28px 20px;
  }
}