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

:root {
  /* Clean blue & white theme */
  --bg: #f0f4ff;
  --bg-alt: #e8eefe;
  --bg-card: #ffffff;
  --bg-card-hover: #f8fbff;
  --text: #1a1a2e;
  --text-secondary: #4a4a6a;
  --text-muted: #8888aa;
  --text-dim: #b0b0cc;

  /* Blue primary palette */
  --blue: #3b82f6;
  --blue-light: #60a5fa;
  --blue-dark: #2563eb;
  --blue-glow: rgba(59, 130, 246, 0.15);
  --blue-subtle: rgba(59, 130, 246, 0.06);

  /* Supporting accent colors */
  --cyan: #06b6d4;
  --cyan-light: #22d3ee;
  --indigo: #6366f1;
  --purple: #8b5cf6;
  --emerald: #10b981;
  --amber: #f59e0b;
  --rose: #f43f5e;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #3b82f6, #06b6d4);
  --gradient-primary-rev: linear-gradient(135deg, #06b6d4, #3b82f6);
  --gradient-accent: linear-gradient(135deg, #6366f1, #8b5cf6);
  --gradient-warm: linear-gradient(135deg, #3b82f6, #f43f5e);
  --gradient-glass: linear-gradient(135deg, rgba(59, 130, 246, 0.04), rgba(6, 182, 212, 0.02));

  --border: #e2e8f0;
  --border-hover: #93c5fd;
  --radius: 16px;
  --radius-sm: 10px;
  --radius-full: 100px;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.03);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.05), 0 2px 4px rgba(0, 0, 0, 0.03);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.06), 0 4px 8px rgba(0, 0, 0, 0.03);
  --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.08);

  --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; }

::selection {
  background: var(--blue);
  color: #fff;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ========== NAVBAR ========== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: var(--transition);
  background: transparent;
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 10px 0;
  box-shadow: var(--shadow-sm);
}

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

.logo {
  font-size: 1.4rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 32px;
}

.nav-links a {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: var(--transition);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: var(--transition);
  border-radius: 2px;
}

.nav-links a:hover {
  color: var(--blue);
}

.nav-links a:hover::after {
  width: 100%;
}

.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 1000;
}

.mobile-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}

.mobile-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
  background: var(--blue);
}

.mobile-toggle.active span:nth-child(2) {
  opacity: 0;
}

.mobile-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
  background: var(--blue);
}

/* ========== HERO ========== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 120px 0 60px;
  background: linear-gradient(135deg, #f0f4ff 0%, #e0ecff 50%, #f0f0ff 100%);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 50% at 10% 50%, rgba(59, 130, 246, 0.06) 0%, transparent 60%),
    radial-gradient(ellipse 50% 40% at 90% 30%, rgba(6, 182, 212, 0.04) 0%, transparent 50%),
    radial-gradient(ellipse 40% 30% at 50% 80%, rgba(99, 102, 241, 0.03) 0%, transparent 50%);
  pointer-events: none;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-text {
  animation: fadeInUp 0.8s ease-out;
}

.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  background: var(--blue-subtle);
  border: 1px solid rgba(59, 130, 246, 0.15);
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--blue);
  margin-bottom: 20px;
}

.hero h1 {
  font-size: clamp(2.5rem, 5vw, 3.8rem);
  font-weight: 900;
  line-height: 1.08;
  margin-bottom: 20px;
  letter-spacing: -1px;
  color: var(--text);
}

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

.hero-sub {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 520px;
  margin-bottom: 32px;
  line-height: 1.7;
}

.hero-cta {
  display: flex;
  gap: 16px;
  margin-bottom: 44px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.9rem;
  transition: var(--transition);
  cursor: pointer;
  border: none;
  font-family: var(--font);
}

.btn-primary {
  background: var(--gradient-primary);
  color: #fff;
  box-shadow: 0 4px 15px var(--blue-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px var(--blue-glow);
}

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-outline:hover {
  border-color: var(--blue);
  color: var(--blue);
  transform: translateY(-2px);
  background: var(--blue-subtle);
}

.btn-large {
  padding: 16px 40px;
  font-size: 1.05rem;
}

.hero-stats {
  display: flex;
  gap: 40px;
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.stat-number {
  font-size: 1.5rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  letter-spacing: 0.3px;
}

/* Chat Preview */
.hero-visual {
  animation: fadeInUp 0.8s ease-out 0.2s both;
}

.chat-preview {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  transition: var(--transition);
}

.chat-preview:hover {
  box-shadow: 0 25px 70px rgba(0, 0, 0, 0.1);
  transform: translateY(-4px);
  border-color: var(--border-hover);
}

.chat-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
  background: #fafbff;
}

.chat-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--gradient-primary);
  flex-shrink: 0;
  position: relative;
}

.chat-avatar::before {
  content: '💔';
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
}

.chat-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.chat-name {
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--text);
}

.chat-status {
  font-size: 0.72rem;
  color: var(--blue);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 6px;
}

.anger-bar {
  width: 50px;
  height: 4px;
  background: #e2e8f0;
  border-radius: 4px;
  overflow: hidden;
  display: inline-block;
  vertical-align: middle;
}

.anger-bar span {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, #3b82f6, #f43f5e);
  border-radius: 4px;
  transition: width 0.5s ease;
}

.chat-mood {
  font-size: 1.6rem;
  animation: moodPulse 2s ease-in-out infinite;
}

@keyframes moodPulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.15); }
}

.chat-messages {
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: #fafbff;
}

.msg {
  display: flex;
  max-width: 88%;
  animation: msgSlide 0.3s ease-out;
}

@keyframes msgSlide {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.msg-her { align-self: flex-start; }
.msg-me { align-self: flex-end; }

.msg-bubble {
  padding: 10px 16px;
  border-radius: 16px;
  font-size: 0.82rem;
  line-height: 1.55;
}

.msg-her .msg-bubble {
  background: #f1f5f9;
  border-bottom-left-radius: 4px;
  color: var(--text);
}

.msg-me .msg-bubble {
  background: var(--gradient-primary);
  color: #fff;
  border-bottom-right-radius: 4px;
  box-shadow: 0 2px 8px var(--blue-glow);
}

.typing {
  display: flex;
  gap: 5px;
  align-items: center;
  padding: 12px 18px !important;
}

.typing span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--blue-light);
  animation: typingBounce 1.4s ease-in-out infinite;
}

.typing span:nth-child(2) { animation-delay: 0.2s; }
.typing span:nth-child(3) { animation-delay: 0.4s; }

@keyframes typingBounce {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.3; }
  30% { transform: translateY(-6px); opacity: 1; }
}

.chat-input-bar {
  display: flex;
  gap: 8px;
  padding: 12px 18px;
  border-top: 1px solid var(--border);
  background: #fafbff;
}

.chat-input-bar input {
  flex: 1;
  padding: 10px 16px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text);
  font-family: var(--font);
  font-size: 0.82rem;
  outline: none;
  transition: var(--transition);
}

.chat-input-bar input:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px var(--blue-glow);
}

.chat-input-bar input::placeholder { color: var(--text-dim); }

.chat-input-bar button {
  padding: 10px 22px;
  border-radius: var(--radius-full);
  border: none;
  background: var(--gradient-primary);
  color: #fff;
  font-weight: 600;
  font-size: 0.82rem;
  cursor: pointer;
  transition: var(--transition);
}

.chat-input-bar button:disabled { opacity: 0.3; cursor: not-allowed; }

/* Carousel dots */
.carousel-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 16px;
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #d1d5db;
  cursor: pointer;
  transition: var(--transition);
}

.dot.active {
  background: var(--blue);
  width: 28px;
  border-radius: 4px;
  box-shadow: 0 0 8px var(--blue-glow);
}

.dot:hover {
  background: var(--blue-light);
}

/* ========== SCROLL INDICATOR ========== */
.scroll-indicator {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: var(--text-dim);
  font-size: 0.72rem;
  animation: bounce 2.5s ease-in-out infinite;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.scroll-arrow {
  font-size: 1.2rem;
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(6px); }
}

/* ========== SECTIONS ========== */
.section {
  padding: 100px 0;
  position: relative;
}

.section-label {
  display: inline-block;
  padding: 5px 14px;
  background: var(--blue-subtle);
  border: 1px solid rgba(59, 130, 246, 0.12);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--blue);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.8px;
}

.section-title {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 800;
  line-height: 1.12;
  margin-bottom: 14px;
  letter-spacing: -0.5px;
  color: var(--text);
}

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

.section-desc {
  font-size: 1.02rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin-bottom: 48px;
  line-height: 1.7;
}

/* ========== CONCEPT ========== */
.concept {
  background: var(--bg-card);
}

.concept-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.concept-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: var(--transition);
}

.concept-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  background: var(--bg-card);
}

.concept-icon {
  font-size: 2rem;
  margin-bottom: 16px;
  display: block;
}

.concept-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text);
}

.concept-card p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ========== FEATURES ========== */
.features {
  background: linear-gradient(180deg, #f0f4ff 0%, #e8eefe 100%);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--gradient-primary);
  opacity: 0;
  transition: var(--transition);
}

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

.feature-card:hover::before {
  opacity: 1;
}

.feature-icon {
  font-size: 2rem;
  margin-bottom: 16px;
  display: block;
}

.feature-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text);
}

.feature-card p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ========== CHARACTERS ========== */
.characters {
  background: var(--bg-card);
}

.characters-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 24px;
}

.char-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 20px 24px;
  text-align: center;
  transition: var(--transition);
  position: relative;
}

.char-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-lg);
  transform: translateY(-6px);
}

.char-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.char-card.free .char-badge {
  background: rgba(16, 185, 129, 0.08);
  color: var(--emerald);
  border: 1px solid rgba(16, 185, 129, 0.15);
}

.char-card.locked .char-badge {
  background: var(--blue-subtle);
  color: var(--blue);
  border: 1px solid rgba(59, 130, 246, 0.12);
}

.char-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  margin: 0 auto 16px;
  position: relative;
}

.char-1 { background: linear-gradient(135deg, #3b82f6, #06b6d4); }
.char-2 { background: linear-gradient(135deg, #6366f1, #8b5cf6); }
.char-3 { background: linear-gradient(135deg, #ec4899, #f43f5e); }
.char-4 { background: linear-gradient(135deg, #14b8a6, #06b6d4); }
.char-5 { background: linear-gradient(135deg, #8b5cf6, #ec4899); }

.char-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 4px;
  color: var(--text);
}

.char-tagline {
  font-size: 0.78rem;
  color: var(--blue);
  font-style: italic;
  margin-bottom: 10px;
}

.char-bio {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 14px;
}

.char-stats {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.72rem;
  color: var(--text-dim);
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

/* ========== LEVELS ========== */
.levels {
  background: linear-gradient(180deg, #f0f4ff 0%, #e8eefe 100%);
}

.levels-timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
  max-width: 600px;
}

.levels-timeline::before {
  content: '';
  position: absolute;
  left: 24px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--blue), var(--cyan), transparent);
  opacity: 0.3;
}

.level-item {
  display: flex;
  gap: 28px;
  padding: 24px 0;
  position: relative;
}

.level-number {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 2px solid var(--blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.1rem;
  flex-shrink: 0;
  position: relative;
  z-index: 1;
  color: var(--blue);
  transition: var(--transition);
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.06);
}

.level-item:hover .level-number {
  background: var(--blue);
  color: #fff;
  box-shadow: 0 0 0 6px rgba(59, 130, 246, 0.1);
}

.level-content h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text);
}

.level-content p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 8px;
}

.level-meta {
  display: inline-block;
  padding: 3px 10px;
  background: var(--blue-subtle);
  border-radius: var(--radius-full);
  font-size: 0.72rem;
  color: var(--blue);
  font-weight: 600;
}

/* ========== LEADERBOARD ========== */
.leaderboard {
  background: var(--bg-card);
}

.lb-preview {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 32px;
  box-shadow: var(--shadow-sm);
}

.lb-table {
  width: 100%;
  border-collapse: collapse;
}

.lb-table th {
  text-align: left;
  padding: 14px 20px;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--text-dim);
  font-weight: 700;
  border-bottom: 1px solid var(--border);
  background: rgba(59, 130, 246, 0.02);
}

.lb-table td {
  padding: 14px 20px;
  font-size: 0.88rem;
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

.lb-table tr:hover td {
  background: var(--blue-subtle);
}

.lb-table tr:last-child td { border-bottom: none; }

.rank-1, .rank-2, .rank-3 {
  font-size: 1.2rem;
}

.player-cell {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  color: var(--text);
}

.player-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  flex-shrink: 0;
  box-shadow: var(--shadow-sm);
}

.win-rate {
  font-weight: 700;
  color: var(--emerald);
}

/* Profile preview */
.profile-preview {
  display: flex;
  justify-content: center;
}

.profile-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  max-width: 420px;
  width: 100%;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

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

.profile-header {
  display: flex;
  gap: 16px;
  align-items: center;
  margin-bottom: 20px;
}

.profile-avatar-lg {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  flex-shrink: 0;
  box-shadow: var(--shadow-sm);
}

.profile-info h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
}

.profile-rank {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.profile-badges {
  display: flex;
  gap: 8px;
  margin-top: 6px;
}

.profile-badges span {
  padding: 2px 8px;
  background: var(--blue-subtle);
  border-radius: var(--radius-full);
  font-size: 0.68rem;
  color: var(--blue);
}

.profile-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-bottom: 16px;
  text-align: center;
}

.profile-stats div {
  padding: 10px 6px;
  background: var(--bg);
  border-radius: var(--radius-sm);
  font-size: 0.72rem;
  color: var(--text-muted);
  border: 1px solid var(--border);
}

.profile-stats strong {
  display: block;
  font-size: 1.1rem;
  color: var(--text);
  margin-bottom: 2px;
}

.profile-characters {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.profile-characters span {
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 500;
}

.profile-characters .owned {
  background: rgba(16, 185, 129, 0.06);
  color: var(--emerald);
  border: 1px solid rgba(16, 185, 129, 0.12);
}

.profile-characters .locked {
  background: rgba(0, 0, 0, 0.02);
  color: var(--text-dim);
  border: 1px solid var(--border);
}

/* ========== ADMIN ========== */
.admin {
  background: linear-gradient(180deg, #f0f4ff 0%, #e8eefe 100%);
}

.admin-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
  margin-bottom: 40px;
}

.admin-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: var(--transition);
}

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

.admin-icon {
  font-size: 2rem;
  margin-bottom: 14px;
  display: block;
}

.brain-icon {
  animation: brainPulse 2.5s ease-in-out infinite;
}

@keyframes brainPulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.1); }
}

.admin-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text);
}

.admin-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* Brain demo */
.brain-demo {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.brain-demo-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 24px;
  border-bottom: 1px solid var(--border);
  background: rgba(59, 130, 246, 0.02);
  flex-wrap: wrap;
  gap: 8px;
}

.brain-demo-title {
  font-weight: 700;
  font-size: 1rem;
  color: var(--text);
}

.brain-demo-session {
  font-size: 0.78rem;
  color: var(--text-dim);
}

.brain-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
  padding: 24px;
}

.brain-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 20px;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.brain-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.brain-card-tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 12px;
  align-self: flex-start;
}

.brain-card.safe .brain-card-tag {
  background: rgba(16, 185, 129, 0.06);
  color: var(--emerald);
  border: 1px solid rgba(16, 185, 129, 0.12);
}

.brain-card.bold .brain-card-tag {
  background: var(--blue-subtle);
  color: var(--blue);
  border: 1px solid rgba(59, 130, 246, 0.12);
}

.brain-card.pickup .brain-card-tag {
  background: rgba(99, 102, 241, 0.06);
  color: var(--indigo);
  border: 1px solid rgba(99, 102, 241, 0.12);
}

.brain-card-text {
  font-size: 0.82rem;
  line-height: 1.6;
  margin-bottom: 12px;
  flex: 1;
  font-style: italic;
  color: var(--text);
}

.brain-card-why {
  font-size: 0.72rem;
  color: var(--text-muted);
  font-style: italic;
  margin-bottom: 12px;
  padding: 8px 12px;
  background: rgba(59, 130, 246, 0.02);
  border-radius: 8px;
  border-left: 2px solid var(--blue);
}

.copy-btn {
  padding: 6px 16px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  font-size: 0.78rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  align-self: flex-start;
  font-family: var(--font);
}

.copy-btn:hover {
  border-color: var(--blue);
  color: var(--blue);
  background: var(--blue-subtle);
}

.brain-cost {
  text-align: center;
  padding: 12px;
  font-size: 0.72rem;
  color: var(--text-dim);
  border-top: 1px solid var(--border);
}

/* ========== CTA ========== */
.cta {
  background: var(--bg-card);
}

.cta-box {
  text-align: center;
  background: linear-gradient(135deg, #eff6ff 0%, #f0f0ff 100%);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 60px 40px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.cta-box::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 300px;
  height: 300px;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, rgba(59, 130, 246, 0.04) 0%, transparent 70%);
  animation: ctaGlow 4s ease-in-out infinite;
}

@keyframes ctaGlow {
  0%, 100% { transform: translate(-50%, -50%) scale(1); }
  50% { transform: translate(-50%, -50%) scale(1.2); }
}

.cta-box h2 {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 800;
  margin-bottom: 12px;
  position: relative;
  color: var(--text);
}

.cta-box p {
  font-size: 1.05rem;
  color: var(--text-secondary);
  margin-bottom: 28px;
  position: relative;
}

.cta-links {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-top: 24px;
  position: relative;
}

.cta-links a {
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: var(--transition);
}

.cta-links a:hover {
  color: var(--blue);
}

/* ========== FOOTER ========== */
.footer {
  padding: 40px 0;
  border-top: 1px solid var(--border);
  background: var(--bg-card);
}

.footer-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-brand p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.footer-logo {
  font-size: 1.2rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer-links {
  display: flex;
  gap: 24px;
  list-style: none;
}

.footer-links a {
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--blue);
}

.footer-copy {
  font-size: 0.78rem;
  color: var(--text-dim);
  width: 100%;
  text-align: center;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  margin-top: 16px;
}

/* ========== ANIMATIONS ========== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.5s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* ========== CHAT SHOWCASE (below hero) ========== */
.chat-showcase {
  background: var(--bg-card);
  padding: 60px 0;
}

.chat-showcase-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 968px) {
  .hero-content {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-visual { order: -1; }

  .chat-preview {
    max-width: 420px;
    margin: 0 auto 16px;
  }

  .hero h1 { font-size: clamp(2rem, 8vw, 3rem); }
  .hero-stats { gap: 28px; }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 80px 32px 32px;
    gap: 20px;
    transition: var(--transition);
    border-left: 1px solid var(--border);
    z-index: 999;
  }

  .nav-links.open { right: 0; }
  .mobile-toggle { display: flex; }

  .section { padding: 60px 0; }
  .features-grid { grid-template-columns: 1fr; }
  .characters-grid { grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); }
  .brain-cards { grid-template-columns: 1fr; }
  .profile-stats { grid-template-columns: repeat(2, 1fr); }
  .cta-box { padding: 40px 24px; }
  .footer-container { flex-direction: column; text-align: center; }
  .footer-links { justify-content: center; }
}

@media (max-width: 480px) {
  .hero-cta { flex-direction: column; }
  .btn { width: 100%; justify-content: center; }
  .hero-stats { flex-wrap: wrap; gap: 20px; }
  .lb-table { font-size: 0.78rem; }
  .lb-table th, .lb-table td { padding: 10px 12px; }
}