/* ==========================================================================
   games.utility.forum - Modern Arcade & Retro Game Portal Design System
   Night Mode (Default) & Day Mode Support
   ========================================================================== */

/* --------------------------------------------------------------------------
   Theme: Night Mode (Default)
   -------------------------------------------------------------------------- */
:root {
  --theme: dark;

  /* Color Palette */
  --bg-dark: #0a0c14;
  --bg-card: rgba(18, 22, 38, 0.75);
  --bg-card-hover: rgba(28, 35, 60, 0.85);
  --bg-surface: #121626;
  --border-glass: rgba(255, 255, 255, 0.08);
  --border-neon: rgba(0, 240, 255, 0.35);

  /* Vibrant Accents */
  --cyan-neon: #00f0ff;
  --cyan-glow: rgba(0, 240, 255, 0.4);
  --magenta-neon: #ff007f;
  --magenta-glow: rgba(255, 0, 127, 0.4);
  --purple-neon: #8a2be2;
  --amber-neon: #ffb703;
  --emerald-neon: #00f59b;

  /* Typography */
  --text-main: #f0f4fc;
  --text-muted: #8e9bb5;
  --text-dim: #5c6882;
  --font-heading: 'Orbitron', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Surface Overlays */
  --header-bg: rgba(10, 12, 20, 0.85);
  --footer-bg: #07090f;
  --grid-line-color: rgba(255, 255, 255, 0.02);
  --ambient-radial-1: rgba(138, 43, 226, 0.12);
  --ambient-radial-2: rgba(0, 240, 255, 0.12);
  --ambient-radial-3: rgba(255, 0, 127, 0.08);

  /* Gradients */
  --gradient-hero: linear-gradient(135deg, #ffffff 0%, var(--cyan-neon) 50%, var(--magenta-neon) 100%);
  --btn-primary-bg: linear-gradient(135deg, var(--cyan-neon), #0099ff);
  --btn-primary-text: #050811;

  /* Transitions & Shadows */
  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.7);
  --shadow-neon: 0 0 20px var(--cyan-glow);
  --blur-glass: blur(16px);
}

/* --------------------------------------------------------------------------
   Theme: Day Mode (Light Theme)
   -------------------------------------------------------------------------- */
[data-theme="light"] {
  --theme: light;

  /* Clean White / Slate Palette */
  --bg-dark: #f8fafc;
  --bg-card: rgba(255, 255, 255, 0.85);
  --bg-card-hover: rgba(255, 255, 255, 1);
  --bg-surface: #ffffff;
  --border-glass: rgba(15, 23, 42, 0.08);
  --border-neon: rgba(2, 132, 199, 0.35);

  /* Refined High-Contrast Accents */
  --cyan-neon: #0284c7;
  --cyan-glow: rgba(2, 132, 199, 0.2);
  --magenta-neon: #c026d3;
  --magenta-glow: rgba(192, 38, 211, 0.2);
  --purple-neon: #7c3aed;
  --amber-neon: #d97706;
  --emerald-neon: #059669;

  /* Typography for Light Mode */
  --text-main: #0f172a;
  --text-muted: #475569;
  --text-dim: #94a3b8;

  /* Light Surfaces */
  --header-bg: rgba(248, 250, 252, 0.88);
  --footer-bg: #f1f5f9;
  --grid-line-color: rgba(15, 23, 42, 0.03);
  --ambient-radial-1: rgba(124, 58, 237, 0.05);
  --ambient-radial-2: rgba(2, 132, 199, 0.06);
  --ambient-radial-3: rgba(192, 38, 211, 0.04);

  /* Light Gradients */
  --gradient-hero: linear-gradient(135deg, #0f172a 0%, #0284c7 50%, #c026d3 100%);
  --btn-primary-bg: linear-gradient(135deg, #0284c7, #2563eb);
  --btn-primary-text: #ffffff;

  --shadow-card: 0 10px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
  --shadow-neon: 0 0 15px rgba(2, 132, 199, 0.15);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  transition: background-color var(--transition-smooth), color var(--transition-smooth);
  background-image: 
    radial-gradient(circle at 15% 15%, var(--ambient-radial-1) 0%, transparent 45%),
    radial-gradient(circle at 85% 25%, var(--ambient-radial-2) 0%, transparent 45%),
    radial-gradient(circle at 50% 80%, var(--ambient-radial-3) 0%, transparent 55%),
    linear-gradient(var(--grid-line-color) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line-color) 1px, transparent 1px);
  background-size: 100% 100%, 100% 100%, 100% 100%, 48px 48px, 48px 48px;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-dark);
}
::-webkit-scrollbar-thumb {
  background: var(--text-dim);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--cyan-neon);
}

/* Layout Container */
.container {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: var(--blur-glass);
  -webkit-backdrop-filter: var(--blur-glass);
  background: var(--header-bg);
  border-bottom: 1px solid var(--border-glass);
  transition: background var(--transition-smooth), border-color var(--transition-smooth);
}

.site-header .nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.5rem;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: 0.05em;
  color: var(--text-main);
}

.brand-icon {
  width: 2.2rem;
  height: 2.2rem;
  background: linear-gradient(135deg, var(--cyan-neon), var(--magenta-neon));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 15px var(--cyan-glow);
  color: #fff;
  font-weight: 900;
  font-size: 1.1rem;
}

.brand-subdomain {
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--cyan-neon);
  letter-spacing: 0.15em;
  display: block;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.8rem;
  list-style: none;
}

.nav-link {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: color var(--transition-fast), text-shadow var(--transition-fast);
  position: relative;
  padding: 0.25rem 0;
}

.nav-link:hover, .nav-link.active {
  color: var(--cyan-neon);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--cyan-neon);
  box-shadow: 0 0 8px var(--cyan-neon);
  border-radius: 2px;
}

/* Header Action Buttons (Day/Night Mode & Audio HUD) */
.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Theme Toggle Button */
.theme-toggle-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-glass);
  color: var(--text-main);
  padding: 0.45rem 0.85rem;
  border-radius: 30px;
  font-size: 0.85rem;
  font-family: var(--font-body);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.theme-toggle-btn:hover {
  background: rgba(2, 132, 199, 0.1);
  border-color: var(--cyan-neon);
  color: var(--cyan-neon);
}

/* Audio Player HUD in Header */
.audio-hud-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-glass);
  color: var(--text-main);
  padding: 0.45rem 0.85rem;
  border-radius: 30px;
  font-size: 0.85rem;
  font-family: var(--font-mono);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.audio-hud-btn:hover {
  background: rgba(0, 240, 255, 0.1);
  border-color: var(--cyan-neon);
  color: var(--cyan-neon);
}

.audio-hud-btn.playing {
  border-color: var(--emerald-neon);
  color: var(--emerald-neon);
}

.audio-pulse {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-dim);
}

.audio-hud-btn.playing .audio-pulse {
  background: var(--emerald-neon);
  animation: pulseGlow 1.4s infinite;
}

@keyframes pulseGlow {
  0% { transform: scale(0.9); opacity: 0.7; }
  50% { transform: scale(1.3); opacity: 1; box-shadow: 0 0 8px var(--emerald-neon); }
  100% { transform: scale(0.9); opacity: 0.7; }
}

.btn-mobile-toggle {
  display: none;
  background: transparent;
  border: none;
  color: var(--text-main);
  font-size: 1.5rem;
  cursor: pointer;
}

/* ==========================================================================
   Clean & Simple Hero Section
   ========================================================================== */
.hero {
  padding: 6rem 0 4rem;
  position: relative;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(2, 132, 199, 0.08);
  border: 1px solid var(--border-neon);
  color: var(--cyan-neon);
  padding: 0.4rem 1.1rem;
  border-radius: 20px;
  font-size: 0.85rem;
  font-family: var(--font-mono);
  font-weight: 700;
  letter-spacing: 0.06em;
  margin-bottom: 1.5rem;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(2.4rem, 5.5vw, 4.2rem);
  font-weight: 900;
  line-height: 1.18;
  margin-bottom: 1.4rem;
  letter-spacing: -0.02em;
}

.gradient-text {
  background: var(--gradient-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 1.25rem;
  color: var(--text-muted);
  max-width: 660px;
  margin: 0 auto 2.5rem;
  font-weight: 400;
  line-height: 1.7;
}

.hero-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.9rem 2rem;
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--btn-primary-bg);
  color: var(--btn-primary-text);
  box-shadow: var(--shadow-neon);
}

.btn-primary:hover {
  transform: translateY(-2px);
  filter: brightness(1.1);
}

.btn-secondary {
  background: var(--bg-card);
  border-color: var(--border-glass);
  color: var(--text-main);
  backdrop-filter: var(--blur-glass);
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-neon);
  transform: translateY(-2px);
}

/* ==========================================================================
   Clean Highlights / Feature Cards
   ========================================================================== */
.simple-features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin: 4rem 0 5rem;
}

.feature-box {
  background: var(--bg-card);
  backdrop-filter: var(--blur-glass);
  border: 1px solid var(--border-glass);
  border-radius: 18px;
  padding: 2rem;
  text-align: left;
  transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.feature-box:hover {
  transform: translateY(-4px);
  border-color: var(--border-neon);
  box-shadow: var(--shadow-card);
}

.feature-box-icon {
  font-size: 2.2rem;
  margin-bottom: 1rem;
  display: inline-block;
}

.feature-box-title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.5rem;
}

.feature-box-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ==========================================================================
   Content & Policy Pages (About, Privacy, Terms)
   ========================================================================== */
.page-header {
  padding: 4rem 0 2rem;
  text-align: center;
}

.page-title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  margin-bottom: 0.75rem;
}

.page-lead {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 650px;
  margin: 0 auto;
}

.content-box {
  background: var(--bg-card);
  backdrop-filter: var(--blur-glass);
  border: 1px solid var(--border-glass);
  border-radius: 24px;
  padding: 3rem;
  margin-bottom: 5rem;
  box-shadow: var(--shadow-card);
}

.prose {
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.8;
}

.prose h2 {
  font-family: var(--font-heading);
  color: var(--text-main);
  font-size: 1.5rem;
  margin: 2.5rem 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-glass);
}

.prose h2:first-of-type {
  margin-top: 0;
}

.prose h3 {
  font-family: var(--font-heading);
  color: var(--cyan-neon);
  font-size: 1.2rem;
  margin: 1.8rem 0 0.75rem;
}

.prose p {
  margin-bottom: 1.25rem;
}

.prose ul, .prose ol {
  margin-bottom: 1.5rem;
  padding-left: 1.5rem;
}

.prose li {
  margin-bottom: 0.5rem;
}

.prose a {
  color: var(--cyan-neon);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.prose a:hover {
  color: var(--text-main);
}

.policy-callout {
  background: rgba(2, 132, 199, 0.06);
  border-left: 4px solid var(--cyan-neon);
  padding: 1.25rem;
  border-radius: 0 12px 12px 0;
  margin: 1.5rem 0;
  color: var(--text-main);
}

/* ==========================================================================
   Full Semantic Heading Hierarchy (H1 - H6)
   ========================================================================== */
h1, .h1 {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  font-weight: 900;
  line-height: 1.2;
  color: var(--text-main);
  letter-spacing: -0.02em;
}

h2, .h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 800;
  line-height: 1.3;
  color: var(--text-main);
  margin-top: 2.5rem;
  margin-bottom: 1rem;
}

h3, .h3 {
  font-family: var(--font-heading);
  font-size: clamp(1.2rem, 2.2vw, 1.5rem);
  font-weight: 700;
  line-height: 1.4;
  color: var(--cyan-neon);
  margin-top: 1.8rem;
  margin-bottom: 0.75rem;
}

h4, .h4 {
  font-family: var(--font-body);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
  margin-top: 1.4rem;
  margin-bottom: 0.5rem;
}

h5, .h5 {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--magenta-neon);
  margin-top: 1.2rem;
  margin-bottom: 0.4rem;
}

h6, .h6 {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  margin-top: 1rem;
  margin-bottom: 0.3rem;
}

/* ==========================================================================
   Breadcrumb Navigation (On-Page SEO)
   ========================================================================== */
.breadcrumbs {
  padding: 1.5rem 0 0.5rem;
  font-size: 0.85rem;
  font-family: var(--font-mono);
  color: var(--text-dim);
}

.breadcrumbs ol {
  list-style: none;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 0;
  margin: 0;
}

.breadcrumbs li {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.breadcrumbs li:not(:last-child)::after {
  content: '/';
  color: var(--text-dim);
}

.breadcrumbs a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.breadcrumbs a:hover {
  color: var(--cyan-neon);
}

.breadcrumbs li[aria-current="page"] {
  color: var(--cyan-neon);
  font-weight: 600;
}

/* ==========================================================================
   Rich Content & SEO Themed Sections
   ========================================================================== */
.seo-section {
  padding: 3.5rem 0;
  border-top: 1px solid var(--border-glass);
}

.section-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--cyan-neon);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.6rem;
}

.seo-grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
  margin-top: 1.5rem;
}

.seo-card {
  background: var(--bg-card);
  backdrop-filter: var(--blur-glass);
  border: 1px solid var(--border-glass);
  border-radius: 20px;
  padding: 2rem;
  transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.seo-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-neon);
  box-shadow: var(--shadow-card);
}

.seo-card p {
  color: var(--text-muted);
  font-size: 0.98rem;
  line-height: 1.7;
  margin-bottom: 1rem;
}

.seo-card p:last-child {
  margin-bottom: 0;
}

.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: rgba(2, 132, 199, 0.12);
  color: var(--cyan-neon);
  padding: 0.25rem 0.65rem;
  border-radius: 12px;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  font-weight: 700;
  margin-right: 0.4rem;
  margin-bottom: 0.4rem;
}

.badge-pill.hot {
  background: rgba(255, 0, 127, 0.15);
  color: var(--magenta-neon);
}

/* ==========================================================================
   FAQ Grid & Cards
   ========================================================================== */
.faq-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.faq-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: 18px;
  padding: 1.8rem;
  transition: border-color var(--transition-fast), transform var(--transition-fast);
}

.faq-card:hover {
  border-color: var(--border-neon);
  transform: translateY(-2px);
}

.faq-q {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.75rem;
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
}

.faq-q-icon {
  color: var(--cyan-neon);
  font-size: 1.25rem;
  line-height: 1;
}

.faq-a {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  margin-top: auto;
  background: var(--footer-bg);
  border-top: 1px solid var(--border-glass);
  padding: 3.5rem 0 2rem;
  color: var(--text-muted);
  transition: background var(--transition-smooth);
}

.footer-simple {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border-glass);
}

.footer-nav {
  display: flex;
  gap: 1.5rem;
  list-style: none;
  flex-wrap: wrap;
}

.footer-nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.95rem;
  transition: color var(--transition-fast);
}

.footer-nav a:hover {
  color: var(--cyan-neon);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1.5rem;
  font-size: 0.85rem;
  color: var(--text-dim);
  flex-wrap: wrap;
  gap: 1rem;
}

/* ==========================================================================
   Modal Dialog (For playing / previewing games directly)
   ========================================================================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(12px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-smooth);
  padding: 1rem;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-neon);
  box-shadow: 0 0 50px rgba(0, 0, 0, 0.5);
  border-radius: 20px;
  width: 100%;
  max-width: 860px;
  overflow: hidden;
  transform: scale(0.95);
  transition: transform var(--transition-smooth);
}

.modal-overlay.active .modal-box {
  transform: scale(1);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-glass);
}

.modal-title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
}

.modal-close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.modal-close:hover {
  color: var(--magenta-neon);
}

.modal-iframe-container {
  width: 100%;
  height: 520px;
  background: #000;
}

.modal-iframe-container iframe {
  width: 100%;
  height: 100%;
  border: none;
}

/* ==========================================================================
   Responsive Queries
   ========================================================================== */
@media (max-width: 768px) {
  .btn-mobile-toggle {
    display: block;
  }
  .nav-links {
    position: fixed;
    top: 4.5rem;
    left: 0;
    right: 0;
    background: var(--bg-surface);
    flex-direction: column;
    padding: 2rem;
    gap: 1.5rem;
    border-bottom: 1px solid var(--border-glass);
    display: none;
    box-shadow: var(--shadow-card);
  }
  .nav-links.open {
    display: flex;
  }
  .footer-simple {
    flex-direction: column;
    align-items: flex-start;
  }
  .content-box {
    padding: 1.75rem;
  }
}