:root {
  --bg-color: #0f172a;
  --surface-color: #1e293b;
  --primary-color: #06b6d4;
  --secondary-color: #ec4899;
  --accent-color: #eab308;
  --text-color: #f8fafc;
  --text-dim: #94a3b8;
  --glass-bg: rgba(30, 41, 59, 0.7);
  --glass-border: rgba(255, 255, 255, 0.1);
}

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

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
  overflow-x: hidden;
}

h1,
h2,
h3,
h4 {
  font-family: 'Playfair Display', serif;
  font-weight: 700;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Glassmorphism */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.glass:hover {
  border-color: rgba(255, 255, 255, 0.2);
  box-shadow: 0 8px 32px 0 rgba(6, 182, 212, 0.2);
}

/* Header & Nav */
header {
  padding: 20px 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid var(--glass-border);
}

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

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.lang-switch {
  display: flex;
  gap: 10px;
}

.lang-btn {
  background: none;
  border: 1px solid var(--glass-border);
  color: var(--text-color);
  padding: 5px 12px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.9rem;
  transition: all 0.3s ease;
  text-decoration: none;
}

.lang-btn.active {
  background: var(--primary-color);
  border-color: var(--primary-color);
  color: var(--bg-color);
  font-weight: 600;
}

/* Hero Section */
.hero {
  padding: 120px 0;
  text-align: center;
  position: relative;
}

.hero h1 {
  font-size: 4rem;
  margin-bottom: 20px;
  line-height: 1.1;
  background: linear-gradient(90deg, #fff, var(--text-dim));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero .subtitle {
  font-size: 1.4rem;
  color: var(--text-dim);
  max-width: 850px;
  margin: 0 auto 40px;
}

/* Section Styling */
section {
  padding: 100px 0;
}

.section-title {
  font-size: 3rem;
  margin-bottom: 60px;
  text-align: center;
  background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* Profile Deck Interaction */
.profile-deck {
  display: grid;
  grid-template-columns: 350px 1fr;
  gap: 40px;
  margin-top: 40px;
}

.profile-nav {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.profile-btn {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--glass-border);
  padding: 25px;
  border-radius: 12px;
  cursor: pointer;
  text-align: left;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  color: var(--text-dim);
}

.profile-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  transform: translateX(10px);
  color: var(--text-color);
}

.profile-btn.active {
  border-left: 4px solid var(--primary-color);
  background: rgba(6, 182, 212, 0.1);
  color: var(--text-color);
}

.profile-btn h4 {
  font-family: 'Inter', sans-serif;
  font-size: 1.25rem;
  margin-bottom: 4px;
}

.profile-btn p {
  font-size: 0.85rem;
  opacity: 0.6;
}

.profile-content-area {
  padding: 40px;
  min-height: 450px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

/* Metrics */
.metrics-grid {
  margin-top: 30px;
  display: grid;
  gap: 20px;
}

.metric-item {
  width: 100%;
}

.metric-info {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
  font-size: 0.95rem;
  font-weight: 600;
}

/* Theory Grid */
.theory-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.theory-card {
  padding: 40px;
}

.theory-card h3 {
  color: var(--primary-color);
  margin-bottom: 15px;
  font-size: 1.6rem;
}

/* Charts */
.chart-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  margin-top: 50px;
}

@media (max-width: 950px) {
  .chart-wrapper {
    grid-template-columns: 1fr;
  }
}

.chart-container {
  padding: 30px;
  position: relative;
  height: 400px;
  width: 100%;
}

/* Game Grid (Verdict) */
.game-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

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

.game-card h3 {
  font-size: 1.8rem;
  margin-bottom: 15px;
}

/* Footer & Donate */
footer {
  padding: 80px 0;
  border-top: 1px solid var(--glass-border);
  text-align: center;
}

.donate-btn {
  display: inline-block;
  margin-top: 30px;
  padding: 18px 45px;
  background: linear-gradient(45deg, var(--secondary-color), var(--accent-color));
  color: white;
  text-decoration: none;
  font-weight: 800;
  border-radius: 50px;
  box-shadow: 0 10px 20px rgba(236, 72, 153, 0.3);
  transition: all 0.3s ease;
}

.donate-btn:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 30px rgba(236, 72, 153, 0.5);
}

/* Animations Logic */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: all 1s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 768px) {
  .profile-deck {
    grid-template-columns: 1fr;
  }

  .hero h1 {
    font-size: 2.8rem;
  }
}