/* 
=============================================
  1. VARIABLES (KUNG FU DOJO THEME)
=============================================
*/
:root {
  /* Colors */
  --ink-black: #080a0e;
  --charcoal: #13171f;
  --dark-jade: #0a1f18;
  --jade: #1eb556;
  --jade-glow: rgba(30, 181, 86, 0.3);
  --crimson: #8b1818;
  --soft-gold: #cfaa61;
  --gold-glow: rgba(207, 170, 97, 0.2);
  
  /* Text */
  --text-primary: #f1f5f9;
  --text-secondary: #8b9bb4;
  
  /* Glassmorphism */
  --glass-bg: rgba(19, 23, 31, 0.65);
  --glass-border: rgba(30, 181, 86, 0.2);
  --glass-blur: blur(16px);
  
  /* Layout */
  --max-width: 1400px;
  --game-max-width: 1280px;
  --radius-lg: 20px;
  --radius-md: 12px;
  --radius-sm: 8px;
  
  /* Transitions */
  --transition-smooth: all 0.4s cubic-bezier(0.25, 1, 0.5, 1);
}

/* 
=============================================
  2. RESET & BASE
=============================================
*/
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background-color: var(--ink-black);
  color: var(--text-primary);
  line-height: 1.6;
}

body {
  overflow-x: hidden;
  background-image: radial-gradient(circle at 50% 0%, var(--dark-jade) 0%, var(--ink-black) 60%);
  background-attachment: fixed;
  position: relative;
}

ul {
  list-style: none;
}

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

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

h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

/* 
=============================================
  3. LAYOUT & TYPOGRAPHY
=============================================
*/
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section-padding {
  padding: 100px 0;
}

.text-center { text-align: center; }
.text-gold { color: var(--soft-gold); }
.text-jade { color: var(--jade); }

.title-xl {
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: linear-gradient(180deg, var(--text-primary) 0%, var(--text-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 24px;
}

.title-lg {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 20px;
}

.subtitle {
  font-size: clamp(1.1rem, 2vw, 1.25rem);
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto 40px;
}

/* 
=============================================
  4. COMPONENTS
=============================================
*/
/* Glass Panels */
.glass-panel {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 16px 36px;
  font-size: 1.1rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition-smooth);
  border: none;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: linear-gradient(135deg, var(--jade) 0%, var(--dark-jade) 100%);
  color: var(--text-primary);
  border: 1px solid var(--jade);
  box-shadow: 0 0 20px var(--jade-glow);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 0 30px var(--jade-glow), 0 10px 20px rgba(0,0,0,0.5);
  border-color: var(--soft-gold);
}

.btn-secondary {
  background: transparent;
  color: var(--soft-gold);
  border: 1px solid var(--soft-gold);
}

.btn-secondary:hover {
  background: var(--soft-gold);
  color: var(--ink-black);
  box-shadow: 0 0 20px var(--gold-glow);
}

/* Disclaimer Badge */
.disclaimer-badge {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: rgba(139, 24, 24, 0.15);
  border: 1px solid rgba(139, 24, 24, 0.4);
  padding: 10px 20px;
  border-radius: 30px;
  font-size: 0.85rem;
  color: #ffb3b3;
  margin-bottom: 30px;
}

.age-icon {
  background: var(--crimson);
  color: white;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  font-weight: bold;
  font-size: 0.75rem;
}

/* 
=============================================
  5. SPECIFIC SECTIONS
=============================================
*/

/* Header / Navigation */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  transition: var(--transition-smooth);
  padding: 20px 0;
  border-bottom: 1px solid transparent;
}

.header.scrolled {
  padding: 12px 0;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--glass-border);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 10px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.logo span {
  color: var(--jade);
}

.nav-links {
  display: flex;
  gap: 32px;
  align-items: center;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 8px 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--jade);
  transition: var(--transition-smooth);
  box-shadow: 0 0 10px var(--jade);
}

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

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

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

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding-top: 100px;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -2;
  /* Abstract mist/lantern gradient fallback if image is missing */
  background: radial-gradient(circle at 50% 30%, rgba(30, 181, 86, 0.15) 0%, rgba(8, 10, 14, 1) 70%),
              radial-gradient(circle at 80% 20%, rgba(207, 170, 97, 0.1) 0%, transparent 40%);
}

.hero-content {
  text-align: center;
  max-width: 900px;
  z-index: 1;
}

/* Game Section */
.game-section {
  position: relative;
  z-index: 5;
  margin-top: -10vh;
  padding-bottom: 100px;
}

.game-wrapper {
  max-width: var(--game-max-width);
  margin: 0 auto;
  padding: 8px;
  border: 1px solid var(--jade);
  box-shadow: 0 0 40px var(--jade-glow);
  transition: var(--transition-smooth);
  position: relative;
  border-radius: 24px;
}

.game-wrapper::before {
  content: '';
  position: absolute;
  top: -2px; left: -2px; right: -2px; bottom: -2px;
  background: linear-gradient(45deg, var(--jade), transparent, var(--soft-gold));
  z-index: -1;
  border-radius: 26px;
  opacity: 0.5;
  animation: pulse-border 4s linear infinite;
}

.game-wrapper:hover {
  transform: scale(1.01);
  box-shadow: 0 0 60px rgba(30, 181, 86, 0.4);
}

.game-frame-container {
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: 18px;
  overflow: hidden;
  background: var(--charcoal);
  position: relative;
}

iframe {
  width: 100%;
  height: 100%;
  border: none;
  display: block;
}

/* Features / Info Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 60px;
}

.feature-card {
  padding: 40px 30px;
  text-align: center;
}

.feature-icon {
  font-size: 2.5rem;
  color: var(--jade);
  margin-bottom: 20px;
  text-shadow: 0 0 15px var(--jade-glow);
}

.feature-title {
  font-size: 1.5rem;
  margin-bottom: 15px;
  color: var(--soft-gold);
}

/* Forms */
.form-group {
  margin-bottom: 24px;
  text-align: left;
}

.form-label {
  display: block;
  margin-bottom: 8px;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.form-control {
  width: 100%;
  padding: 16px;
  background: rgba(19, 23, 31, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 1rem;
  transition: var(--transition-smooth);
}

.form-control:focus {
  outline: none;
  border-color: var(--jade);
  box-shadow: 0 0 15px var(--jade-glow);
}

textarea.form-control {
  min-height: 150px;
  resize: vertical;
}

/* Content Pages (Terms, Privacy, etc) */
.page-hero {
  padding: 150px 0 60px;
  text-align: center;
  background: linear-gradient(to bottom, rgba(10, 31, 24, 0.8), var(--ink-black));
  border-bottom: 1px solid var(--glass-border);
}

.content-box {
  padding: 60px;
  margin-top: -30px;
  margin-bottom: 100px;
}

.content-box h2 {
  color: var(--soft-gold);
  margin: 40px 0 20px;
}

.content-box p {
  margin-bottom: 20px;
  color: var(--text-secondary);
}

.content-box ul {
  margin-bottom: 20px;
  padding-left: 20px;
  color: var(--text-secondary);
  list-style: disc;
}

/* Footer */
.footer {
  border-top: 1px solid var(--glass-border);
  padding: 60px 0 30px;
  background: var(--charcoal);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 50px;
  margin-bottom: 50px;
}

.footer-brand p {
  color: var(--text-secondary);
  margin-top: 20px;
  font-size: 0.95rem;
}

.footer-title {
  color: var(--soft-gold);
  margin-bottom: 24px;
  font-size: 1.2rem;
}

.footer-links li {
  margin-bottom: 12px;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.footer-links a:hover {
  color: var(--jade);
  text-shadow: 0 0 10px var(--jade-glow);
}

.footer-bottom {
  text-align: center;
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  color: var(--text-secondary);
  font-size: 0.85rem;
}

/* 
=============================================
  6. ANIMATIONS & EFFECTS
=============================================
*/
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes pulse-border {
  0% { opacity: 0.3; }
  50% { opacity: 0.8; }
  100% { opacity: 0.3; }
}

/* Ambient Particles Container */
#ambient-particles {
  position: fixed;
  top: 0; left: 0; width: 100%; height: 100%;
  pointer-events: none;
  z-index: -1;
  overflow: hidden;
}

.particle {
  position: absolute;
  background: var(--jade);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--jade);
  opacity: 0;
  animation: float-up infinite linear;
}

@keyframes float-up {
  0% { transform: translateY(100vh) scale(0); opacity: 0; }
  20% { opacity: 0.6; }
  80% { opacity: 0.6; }
  100% { transform: translateY(-100px) scale(1.5); opacity: 0; }
}

/* 
=============================================
  7. RESPONSIVE DESIGN
=============================================
*/
@media (max-width: 1024px) {
  .section-padding { padding: 70px 0; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .game-section { margin-top: 0; padding-top: 40px; }
  .game-wrapper { border-radius: 16px; }
  .game-frame-container { border-radius: 12px; }
}

@media (max-width: 768px) {
  .section-padding { padding: 50px 0; }
  .nav-links {
    position: fixed;
    top: 0; right: -100%;
    width: 280px; height: 100vh;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-left: 1px solid var(--glass-border);
    flex-direction: column;
    justify-content: center;
    transition: var(--transition-smooth);
    padding: 40px;
  }
  .nav-links.active { right: 0; }
  .mobile-toggle { display: block; z-index: 1001; }
  
  .game-frame-container { aspect-ratio: 4 / 3; }
  
  .footer-grid { grid-template-columns: 1fr; gap: 40px; }
  .content-box { padding: 30px 20px; }
  
  .title-xl { font-size: 2.2rem; }
  .hero { padding-top: 120px; min-height: 80vh; }
}

@media (max-width: 480px) {
  .game-wrapper { padding: 4px; border-radius: 12px; }
  .game-frame-container { border-radius: 8px; aspect-ratio: 1 / 1.2; }
  .btn { padding: 14px 24px; font-size: 1rem; width: 100%; }
  .disclaimer-badge { flex-direction: column; text-align: center; }
}