/* X Cleaner Landing Page — Modern Dark Theme */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --bg: #0a0a0a;
  --bg2: #16181c;
  --bg3: #1e2028;
  --accent: #1d9bf0;
  --accent-hover: #1a8cd8;
  --gold: #ffd700;
  --text: #e7e9ea;
  --text2: #71767b;
  --text3: #536471;
  --border: #2f3336;
  --green: #00ba7c;
  --red: #f4212e;
  --radius: 12px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }

/* Nav */
.nav { position: fixed; top: 0; left: 0; right: 0; z-index: 100; background: rgba(10,10,10,0.9); backdrop-filter: blur(12px); border-bottom: 1px solid var(--border); }
.nav-inner { max-width: 1100px; margin: 0 auto; padding: 0 24px; display: flex; align-items: center; justify-content: space-between; height: 60px; }
.nav-logo { color: var(--accent); font-size: 18px; font-weight: 700; text-decoration: none; display: flex; align-items: center; gap: 10px; line-height: 1; }
.nav-logo-img { width: 32px; height: 32px; object-fit: contain; flex-shrink: 0; }
.nav-links { display: flex; align-items: center; gap: 24px; }
.nav-links a { color: var(--text2); text-decoration: none; font-size: 14px; transition: color 0.15s; }
.nav-links a:hover { color: var(--text); }
.nav-lang { padding: 4px 10px; border: 1px solid var(--border); border-radius: 8px; font-size: 13px; }
.nav-cta { background: var(--accent) !important; color: white !important; padding: 8px 20px !important; border-radius: 20px; font-weight: 600; }
.nav-cta:hover { background: var(--accent-hover) !important; }

/* Buttons */
.btn { display: inline-block; padding: 12px 28px; border-radius: 24px; font-size: 15px; font-weight: 600; text-decoration: none; cursor: pointer; border: none; transition: all 0.15s; }
.btn-primary { background: var(--accent); color: white; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-secondary { background: var(--bg3); color: var(--text); border: 1px solid var(--border); }
.btn-secondary:hover { background: var(--border); }
.btn-premium { background: linear-gradient(135deg, var(--gold), #ff8c00); color: #000; }
.btn-premium:hover { opacity: 0.9; }
.btn-lg { padding: 16px 36px; font-size: 17px; }

/* Hero */
.hero { padding: 140px 24px 80px; text-align: center; background: radial-gradient(ellipse at center top, rgba(29,155,240,0.08) 0%, transparent 60%); }
.hero-inner { max-width: 700px; margin: 0 auto; }
.hero h1 { font-size: 48px; font-weight: 800; line-height: 1.15; margin-bottom: 20px; letter-spacing: -1px; }
.hero-sub { font-size: 18px; color: var(--text2); margin-bottom: 32px; line-height: 1.5; }
.hero-note { font-size: 13px; color: var(--text3); margin-top: 12px; }

/* Features */
.features { padding: 80px 0; }
.features h2 { text-align: center; font-size: 32px; font-weight: 700; margin-bottom: 48px; }
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.feature-card { background: var(--bg2); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; position: relative; transition: border-color 0.15s; }
.feature-card:hover { border-color: var(--accent); }
.feature-icon { font-size: 28px; margin-bottom: 12px; }
.feature-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.feature-card p { font-size: 14px; color: var(--text2); line-height: 1.5; }
.feature-badge { position: absolute; top: 12px; right: 12px; background: var(--gold); color: #000; padding: 2px 8px; border-radius: 8px; font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; }

/* How it works */
.how-it-works { padding: 80px 0; background: var(--bg2); }
.how-it-works h2 { text-align: center; font-size: 32px; font-weight: 700; margin-bottom: 48px; }
.steps { display: flex; align-items: center; justify-content: center; gap: 24px; }
.step { text-align: center; flex: 1; max-width: 240px; }
.step-number { width: 48px; height: 48px; border-radius: 50%; background: var(--accent); color: white; font-size: 20px; font-weight: 700; display: flex; align-items: center; justify-content: center; margin: 0 auto 16px; }
.step h3 { font-size: 18px; margin-bottom: 8px; }
.step p { font-size: 14px; color: var(--text2); }
.step-arrow { font-size: 24px; color: var(--text3); }

/* Pricing */
.pricing { padding: 80px 0; }
.pricing h2 { text-align: center; font-size: 32px; font-weight: 700; margin-bottom: 8px; }
.pricing-sub { text-align: center; font-size: 16px; color: var(--text2); margin-bottom: 48px; }
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; align-items: start; }
.price-card { background: var(--bg2); border: 1px solid var(--border); border-radius: var(--radius); padding: 32px; text-align: center; position: relative; }
.price-card-highlight { border-color: var(--accent); box-shadow: 0 0 30px rgba(29,155,240,0.15); transform: scale(1.03); }
.price-popular { position: absolute; top: -12px; left: 50%; transform: translateX(-50%); background: var(--accent); color: white; padding: 4px 16px; border-radius: 12px; font-size: 12px; font-weight: 700; }
.price-tier { font-size: 14px; font-weight: 700; color: var(--text2); text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 8px; }
.price-tier-premium { color: var(--gold); }
.price-amount { font-size: 42px; font-weight: 800; margin-bottom: 4px; }
.price-period { font-size: 14px; color: var(--text3); margin-bottom: 24px; }
.price-features { list-style: none; text-align: left; margin-bottom: 24px; }
.price-features li { padding: 6px 0; font-size: 14px; color: var(--text2); border-bottom: 1px solid rgba(47,51,54,0.5); }
.price-features li:last-child { border-bottom: none; }
.price-features li strong { color: var(--text); }
.price-card .btn { width: 100%; }

/* FAQ */
.faq { padding: 80px 0; background: var(--bg2); }
.faq h2 { text-align: center; font-size: 32px; font-weight: 700; margin-bottom: 48px; }
.faq-list { max-width: 700px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-q { display: flex; width: 100%; padding: 18px 0; background: none; border: none; color: var(--text); font-size: 16px; font-weight: 600; cursor: pointer; text-align: left; }
.faq-q::after { content: "+"; margin-left: auto; font-size: 20px; color: var(--text2); transition: transform 0.2s; }
.faq-item.open .faq-q::after { content: "−"; }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; }
.faq-item.open .faq-a { max-height: 300px; }
.faq-a p { padding: 0 0 18px 0; font-size: 14px; color: var(--text2); line-height: 1.6; }

/* Footer */
.footer { padding: 40px 0; border-top: 1px solid var(--border); }
.footer-inner { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 20px; }
.footer-logo { font-size: 16px; font-weight: 700; color: var(--accent); }
.footer-brand p { font-size: 13px; color: var(--text3); margin-top: 4px; }
.footer-links { display: flex; gap: 20px; }
.footer-links a { color: var(--text2); font-size: 13px; text-decoration: none; }
.footer-links a:hover { color: var(--text); }
.footer-copy { font-size: 12px; color: var(--text3); width: 100%; text-align: center; margin-top: 12px; }

/* Responsive */
@media (max-width: 768px) {
  .hero h1 { font-size: 32px; }
  .hero-sub { font-size: 16px; }
  .features-grid { grid-template-columns: 1fr; }
  .pricing-grid { grid-template-columns: 1fr; }
  .price-card-highlight { transform: none; }
  .steps { flex-direction: column; }
  .step-arrow { transform: rotate(90deg); }
  .nav-links { gap: 12px; }
  .nav-links a:not(.nav-cta):not(.nav-lang) { display: none; }
  .footer-inner { flex-direction: column; text-align: center; }
  .footer-links { flex-wrap: wrap; justify-content: center; }
}