/* ===== YieldRadar Styles ===== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

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

:root {
  --bg-primary: #0a0e1a;
  --bg-secondary: #111827;
  --bg-card: #1a1f35;
  --bg-card-hover: #222845;
  --accent-blue: #3b82f6;
  --accent-purple: #8b5cf6;
  --accent-green: #22c55e;
  --accent-red: #ef4444;
  --accent-yellow: #eab308;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border-color: #1e293b;
  --gradient-1: linear-gradient(135deg, #3b82f6, #8b5cf6);
  --gradient-2: linear-gradient(135deg, #8b5cf6, #ec4899);
  --gradient-3: linear-gradient(135deg, #22c55e, #3b82f6);
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 4px 24px rgba(0,0,0,0.3);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.4);
  --transition: 0.3s ease;
}

html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
}
a { color: var(--accent-blue); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent-purple); }
img { max-width: 100%; height: auto; }
ul, ol { list-style: none; }

/* ===== Utility ===== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.text-gradient {
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.text-gradient-2 {
  background: var(--gradient-2);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.text-center { text-align: center; }
.text-green { color: var(--accent-green); }
.text-red { color: var(--accent-red); }
.text-muted { color: var(--text-secondary); }

/* ===== Buttons ===== */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 32px; border-radius: 50px; font-weight: 600;
  font-size: 1rem; cursor: pointer; border: none;
  transition: all var(--transition); text-decoration: none;
}
.btn-primary {
  background: var(--gradient-1); color: #fff;
  box-shadow: 0 4px 20px rgba(59,130,246,0.4);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(59,130,246,0.6);
  color: #fff;
}
.btn-secondary {
  background: transparent; color: var(--text-primary);
  border: 2px solid var(--border-color);
}
.btn-secondary:hover {
  border-color: var(--accent-blue); color: var(--accent-blue);
  transform: translateY(-2px);
}
.btn-green {
  background: linear-gradient(135deg, #22c55e, #16a34a); color: #fff;
  box-shadow: 0 4px 20px rgba(34,197,94,0.4);
}
.btn-green:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(34,197,94,0.6); color: #fff; }
.btn-sm { padding: 10px 20px; font-size: 0.875rem; }
.btn-lg { padding: 18px 40px; font-size: 1.1rem; }
.btn-icon { font-size: 1.2em; }

/* ===== Navigation ===== */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(10,14,26,0.85); backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  padding: 0 24px; height: 72px;
}
.nav-inner {
  max-width: 1200px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  height: 100%;
}
.nav-logo {
  font-size: 1.5rem; font-weight: 800; color: var(--text-primary);
  display: flex; align-items: center; gap: 8px;
}
.nav-logo span { font-size: 1.6rem; }
.nav-links { display: flex; align-items: center; gap: 32px; }
.nav-links a {
  color: var(--text-secondary); font-weight: 500; font-size: 0.95rem;
  transition: color var(--transition);
}
.nav-links a:hover, .nav-links a.active { color: var(--text-primary); }
.nav-cta {
  background: var(--gradient-1); color: #fff !important;
  padding: 10px 24px; border-radius: 50px; font-weight: 600;
}
.nav-cta:hover { color: #fff; opacity: 0.9; }
.hamburger {
  display: none; flex-direction: column; gap: 5px;
  cursor: pointer; padding: 4px; background: none; border: none;
}
.hamburger span {
  width: 24px; height: 2px; background: var(--text-primary);
  transition: all var(--transition); border-radius: 2px;
}
.mobile-menu {
  display: none; position: fixed; top: 72px; left: 0; right: 0;
  background: var(--bg-secondary); border-bottom: 1px solid var(--border-color);
  padding: 24px; flex-direction: column; gap: 16px; z-index: 999;
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  color: var(--text-secondary); font-weight: 500; padding: 8px 0;
  font-size: 1.1rem;
}

/* ===== Price Ticker ===== */
.price-ticker {
  background: var(--bg-secondary); border-bottom: 1px solid var(--border-color);
  padding: 10px 0; margin-top: 72px;
}
.price-ticker-inner {
  display: flex; align-items: center; justify-content: center;
  gap: 40px; flex-wrap: wrap;
}
.price-item {
  display: flex; align-items: center; gap: 8px;
  font-size: 0.9rem; font-weight: 500;
}
.price-item .symbol { color: var(--text-muted); }
.price-item .value { color: var(--text-primary); font-weight: 700; }
.price-item .change { font-size: 0.8rem; font-weight: 600; }
.price-item .change.up { color: var(--accent-green); }
.price-item .change.down { color: var(--accent-red); }

/* ===== Hero ===== */
.hero {
  padding: 100px 0 80px; text-align: center;
  position: relative; overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; top: -50%; left: -50%;
  width: 200%; height: 200%;
  background: radial-gradient(circle at 30% 20%, rgba(59,130,246,0.08) 0%, transparent 50%),
              radial-gradient(circle at 70% 80%, rgba(139,92,246,0.08) 0%, transparent 50%);
  animation: heroGlow 15s ease-in-out infinite alternate;
}
@keyframes heroGlow {
  0% { transform: translate(0, 0) rotate(0deg); }
  100% { transform: translate(-5%, 5%) rotate(3deg); }
}
.hero-content { position: relative; z-index: 1; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(59,130,246,0.1); border: 1px solid rgba(59,130,246,0.3);
  padding: 8px 20px; border-radius: 50px; font-size: 0.85rem;
  color: var(--accent-blue); font-weight: 600; margin-bottom: 24px;
}
.hero-badge .pulse {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent-green); animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.5); }
}
.hero h1 {
  font-size: clamp(2.2rem, 5vw, 4rem); font-weight: 900;
  line-height: 1.1; margin-bottom: 24px; letter-spacing: -0.02em;
}
.hero p {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--text-secondary); max-width: 640px;
  margin: 0 auto 40px; line-height: 1.8;
}
.hero-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.hero-stats {
  display: flex; justify-content: center; gap: 48px; margin-top: 60px;
  flex-wrap: wrap;
}
.hero-stat { text-align: center; }
.hero-stat .number {
  font-size: 2rem; font-weight: 800;
  background: var(--gradient-1);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.hero-stat .label { font-size: 0.85rem; color: var(--text-muted); margin-top: 4px; }

/* ===== Cards / Grid ===== */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

.card {
  background: var(--bg-card); border: 1px solid var(--border-color);
  border-radius: var(--radius); padding: 32px;
  transition: all var(--transition);
}
.card:hover {
  border-color: rgba(59,130,246,0.3);
  transform: translateY(-4px); box-shadow: var(--shadow);
}
.card-icon {
  width: 56px; height: 56px; border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.6rem; margin-bottom: 20px;
}
.card-icon.blue { background: rgba(59,130,246,0.15); }
.card-icon.purple { background: rgba(139,92,246,0.15); }
.card-icon.green { background: rgba(34,197,94,0.15); }
.card-icon.red { background: rgba(239,68,68,0.15); }
.card h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 12px; }
.card p { color: var(--text-secondary); font-size: 0.95rem; }

/* ===== Section Headers ===== */
.section-header { text-align: center; margin-bottom: 48px; }
.section-header h2 {
  font-size: clamp(1.8rem, 3vw, 2.5rem); font-weight: 800;
  margin-bottom: 16px;
}
.section-header p {
  color: var(--text-secondary); max-width: 600px;
  margin: 0 auto; font-size: 1.05rem;
}

/* ===== Airdrop Cards ===== */
.airdrop-card {
  background: var(--bg-card); border: 1px solid var(--border-color);
  border-radius: var(--radius-lg); padding: 28px;
  transition: all var(--transition); position: relative; overflow: hidden;
}
.airdrop-card:hover {
  border-color: rgba(59,130,246,0.3);
  transform: translateY(-2px); box-shadow: var(--shadow);
}
.airdrop-card.pro-only::before {
  content: '🔒 PRO'; position: absolute; top: 16px; right: 16px;
  background: var(--gradient-2); padding: 4px 12px; border-radius: 20px;
  font-size: 0.75rem; font-weight: 700; color: #fff;
}
.airdrop-header { display: flex; align-items: center; gap: 16px; margin-bottom: 16px; }
.airdrop-logo {
  width: 48px; height: 48px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem; background: var(--bg-secondary);
}
.airdrop-title h3 { font-size: 1.1rem; font-weight: 700; }
.airdrop-title .chain { font-size: 0.8rem; color: var(--text-muted); }
.airdrop-meta {
  display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 16px;
}
.airdrop-tag {
  padding: 4px 12px; border-radius: 20px; font-size: 0.78rem;
  font-weight: 600; display: inline-flex; align-items: center; gap: 4px;
}
.tag-value { background: rgba(34,197,94,0.15); color: var(--accent-green); }
.tag-difficulty-easy { background: rgba(34,197,94,0.15); color: var(--accent-green); }
.tag-difficulty-medium { background: rgba(234,179,8,0.15); color: var(--accent-yellow); }
.tag-difficulty-hard { background: rgba(239,68,68,0.15); color: var(--accent-red); }
.tag-status-active { background: rgba(34,197,94,0.15); color: var(--accent-green); }
.tag-status-upcoming { background: rgba(59,130,246,0.15); color: var(--accent-blue); }
.tag-status-ending { background: rgba(239,68,68,0.15); color: var(--accent-red); }
.tag-category { background: rgba(139,92,246,0.15); color: var(--accent-purple); }
.airdrop-steps { margin-top: 16px; }
.airdrop-steps h4 { font-size: 0.9rem; font-weight: 700; margin-bottom: 12px; color: var(--text-primary); }
.airdrop-steps ol { list-style: decimal; padding-left: 20px; }
.airdrop-steps li {
  color: var(--text-secondary); font-size: 0.9rem;
  margin-bottom: 8px; line-height: 1.6;
}
.airdrop-footer {
  display: flex; justify-content: space-between; align-items: center;
  margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--border-color);
}
.airdrop-deadline { font-size: 0.85rem; color: var(--text-muted); }

/* ===== Filter Buttons ===== */
.filters {
  display: flex; gap: 8px; flex-wrap: wrap;
  justify-content: center; margin-bottom: 40px;
}
.filter-btn {
  padding: 8px 20px; border-radius: 50px; font-size: 0.85rem;
  font-weight: 600; cursor: pointer; border: 1px solid var(--border-color);
  background: var(--bg-card); color: var(--text-secondary);
  transition: all var(--transition);
}
.filter-btn:hover, .filter-btn.active {
  background: var(--accent-blue); color: #fff;
  border-color: var(--accent-blue);
}

/* ===== FAQ ===== */
.faq-item {
  background: var(--bg-card); border: 1px solid var(--border-color);
  border-radius: var(--radius); margin-bottom: 12px; overflow: hidden;
}
.faq-question {
  padding: 20px 24px; cursor: pointer;
  display: flex; justify-content: space-between; align-items: center;
  font-weight: 600; font-size: 1rem;
  transition: background var(--transition);
}
.faq-question:hover { background: var(--bg-card-hover); }
.faq-question .icon { transition: transform var(--transition); font-size: 1.2rem; }
.faq-item.open .faq-question .icon { transform: rotate(45deg); }
.faq-answer {
  max-height: 0; overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
}
.faq-item.open .faq-answer { max-height: 300px; }
.faq-answer-inner {
  padding: 0 24px 20px;
  color: var(--text-secondary); font-size: 0.95rem; line-height: 1.7;
}

/* ===== Pricing / Comparison ===== */
.pricing-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; max-width: 800px; margin: 0 auto; }
.pricing-card {
  background: var(--bg-card); border: 1px solid var(--border-color);
  border-radius: var(--radius-lg); padding: 40px; text-align: center;
  position: relative;
}
.pricing-card.featured {
  border-color: var(--accent-blue);
  box-shadow: 0 0 40px rgba(59,130,246,0.15);
}
.pricing-card.featured::before {
  content: '⭐ MOST POPULAR'; position: absolute; top: -14px; left: 50%;
  transform: translateX(-50%); background: var(--gradient-1);
  padding: 6px 20px; border-radius: 20px; font-size: 0.75rem;
  font-weight: 700; color: #fff; white-space: nowrap;
}
.pricing-card h3 { font-size: 1.3rem; font-weight: 700; margin-bottom: 8px; }
.pricing-price { font-size: 2.5rem; font-weight: 900; margin: 16px 0; }
.pricing-price small { font-size: 0.9rem; color: var(--text-muted); font-weight: 400; }
.pricing-features { text-align: left; margin: 24px 0; }
.pricing-features li {
  padding: 8px 0; color: var(--text-secondary); font-size: 0.9rem;
  display: flex; align-items: center; gap: 10px;
}
.pricing-features .check { color: var(--accent-green); }
.pricing-features .cross { color: var(--text-muted); }

/* ===== Payment Card ===== */
.payment-card {
  background: var(--bg-card); border: 1px solid var(--border-color);
  border-radius: var(--radius-lg); padding: 40px; max-width: 560px;
  margin: 40px auto; text-align: center;
}
.wallet-address {
  background: var(--bg-primary); border: 1px solid var(--border-color);
  border-radius: var(--radius); padding: 16px;
  font-family: monospace; font-size: 0.85rem; word-break: break-all;
  color: var(--accent-blue); margin: 20px 0; position: relative;
}
.copy-btn {
  background: var(--accent-blue); color: #fff; border: none;
  padding: 8px 16px; border-radius: 8px; cursor: pointer;
  font-weight: 600; font-size: 0.85rem; margin-top: 12px;
  transition: all var(--transition);
}
.copy-btn:hover { background: var(--accent-purple); }

/* ===== Referral Calculator ===== */
.calc-card {
  background: var(--bg-card); border: 1px solid var(--border-color);
  border-radius: var(--radius-lg); padding: 40px; max-width: 600px;
  margin: 40px auto;
}
.calc-input {
  width: 100%; padding: 14px 20px; background: var(--bg-primary);
  border: 1px solid var(--border-color); border-radius: var(--radius);
  color: var(--text-primary); font-size: 1rem; font-family: inherit;
  margin: 8px 0 16px; transition: border var(--transition);
}
.calc-input:focus { outline: none; border-color: var(--accent-blue); }
.calc-result {
  background: var(--bg-primary); border-radius: var(--radius);
  padding: 20px; text-align: center; margin-top: 16px;
}
.calc-result .amount {
  font-size: 2rem; font-weight: 800;
  background: var(--gradient-3);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}

/* ===== Footer ===== */
.footer {
  background: var(--bg-secondary); border-top: 1px solid var(--border-color);
  padding: 60px 0 30px;
}
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px;
  margin-bottom: 40px;
}
.footer-brand p { color: var(--text-secondary); margin-top: 12px; font-size: 0.9rem; line-height: 1.7; }
.footer-col h4 { font-weight: 700; margin-bottom: 16px; font-size: 0.95rem; }
.footer-col a {
  display: block; color: var(--text-secondary); padding: 4px 0;
  font-size: 0.9rem; transition: color var(--transition);
}
.footer-col a:hover { color: var(--text-primary); }
.footer-bottom {
  border-top: 1px solid var(--border-color); padding-top: 24px;
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 12px;
}
.footer-bottom p { color: var(--text-muted); font-size: 0.85rem; }

/* ===== Page Header ===== */
.page-header {
  padding: 120px 0 60px; text-align: center;
  background: linear-gradient(180deg, rgba(59,130,246,0.05) 0%, transparent 100%);
}
.page-header h1 { font-size: clamp(2rem, 4vw, 3rem); font-weight: 900; margin-bottom: 16px; }
.page-header p { color: var(--text-secondary); font-size: 1.1rem; max-width: 600px; margin: 0 auto; }

/* ===== Commission Tiers ===== */
.tier-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.tier-card {
  background: var(--bg-card); border: 1px solid var(--border-color);
  border-radius: var(--radius-lg); padding: 32px; text-align: center;
}
.tier-card.highlight { border-color: var(--accent-blue); box-shadow: 0 0 30px rgba(59,130,246,0.1); }
.tier-percent { font-size: 3rem; font-weight: 900; }

/* ===== Leaderboard ===== */
.leaderboard {
  background: var(--bg-card); border: 1px solid var(--border-color);
  border-radius: var(--radius-lg); overflow: hidden; max-width: 700px; margin: 40px auto;
}
.leaderboard-header {
  padding: 20px 24px; background: var(--bg-secondary);
  display: flex; justify-content: space-between; font-weight: 700; font-size: 0.9rem;
  color: var(--text-muted);
}
.leaderboard-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: 16px 24px; border-top: 1px solid var(--border-color);
}
.leaderboard-row .rank { font-weight: 800; font-size: 1.1rem; min-width: 32px; }
.leaderboard-row .name { font-weight: 600; flex: 1; margin-left: 16px; }
.leaderboard-row .earnings { color: var(--accent-green); font-weight: 700; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .grid-2, .grid-3, .grid-4, .pricing-grid, .tier-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 24px; }
  .hero { padding: 60px 0 40px; }
  .section { padding: 60px 0; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .price-ticker-inner { gap: 16px; }
}
@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .card { padding: 24px; }
  .btn-lg { padding: 14px 28px; font-size: 1rem; }
  .hero-buttons { flex-direction: column; align-items: center; }
}