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

:root {
  --color-dark: #0a0a0a;
  --color-card: #151515;
  --color-border: #2a2a2a;
  --color-text: #ffffff;
  --color-text-muted: #a0a0a0;
  --color-primary: #00d4ff;
  --color-secondary: #7c3aed;
  --gradient-primary: linear-gradient(135deg, #00d4ff, #7c3aed);
}

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

/* ========== BACK BUTTON ========== */
.back-btn {
  position: fixed;
  top: 20px;
  left: 24px;
  z-index: 100;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background: rgba(10,10,10,0.9);
  backdrop-filter: blur(10px);
  border: 1px solid var(--color-border);
  border-radius: 50px;
  color: var(--color-text);
  text-decoration: none;
  font-size: 13px;
  font-weight: 600;
  transition: all 0.3s ease;
}
.back-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateX(-4px);
}

/* ========== CONTAINER ========== */
.cs-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

.cs-center { text-align: center; }

/* ========== HERO ========== */
.cs-hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 24px 80px;
  overflow: hidden;
}

.cs-hero-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 30% 50%, rgba(0,212,255,0.1) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 50%, rgba(124,58,237,0.1) 0%, transparent 60%);
  z-index: 0;
}

.cs-hero-content {
  position: relative;
  z-index: 1;
  max-width: 700px;
}

.cs-logo-wrap {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  overflow: hidden;
  border: 3px solid rgba(0,212,255,0.4);
  box-shadow: 0 0 40px rgba(0,212,255,0.2);
  margin: 0 auto 24px;
}

.cs-logo {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.cs-tag {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(0,212,255,0.1);
  border: 1px solid rgba(0,212,255,0.3);
  border-radius: 50px;
  font-size: 12px;
  font-weight: 700;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 20px;
}

.cs-hero h1 {
  font-size: clamp(36px, 6vw, 64px);
  font-weight: 800;
  margin-bottom: 16px;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.cs-hero p {
  font-size: 18px;
  color: var(--color-text-muted);
  margin-bottom: 36px;
  line-height: 1.7;
}

.cs-links {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.cs-btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  background: var(--gradient-primary);
  color: #0a0a0a;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  transition: all 0.3s ease;
}
.cs-btn-primary:hover { transform: translateY(-3px); box-shadow: 0 10px 30px rgba(0,212,255,0.3); }

.cs-btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  background: transparent;
  color: var(--color-text);
  border: 2px solid var(--color-primary);
  border-radius: 10px;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  transition: all 0.3s ease;
}
.cs-btn-secondary:hover { background: var(--color-primary); color: #0a0a0a; transform: translateY(-3px); }

/* ========== STATS ========== */
.cs-stats {
  padding: 60px 0;
  background: linear-gradient(135deg, rgba(0,212,255,0.05), rgba(124,58,237,0.05));
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.cs-stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  text-align: center;
}

.cs-stat-num {
  display: block;
  font-size: 36px;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}

.cs-stat-label {
  font-size: 13px;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 600;
}

/* ========== SCREENSHOT ========== */
.cs-screenshot { padding: 80px 0; }

.cs-browser {
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  box-shadow: 0 30px 80px rgba(0,0,0,0.5);
}

.cs-browser-bar {
  background: #1a1a1a;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid var(--color-border);
}

.cs-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}
.cs-dot.red { background: #ff5f57; }
.cs-dot.yellow { background: #febc2e; }
.cs-dot.green { background: #28c840; }

.cs-browser-url {
  margin-left: 12px;
  font-size: 12px;
  color: var(--color-text-muted);
  background: rgba(255,255,255,0.05);
  padding: 4px 16px;
  border-radius: 20px;
  flex: 1;
  max-width: 300px;
}

.cs-browser-screen img {
  width: 100%;
  display: block;
  max-height: 500px;
  object-fit: cover;
  object-position: top;
}

/* ========== SECTIONS ========== */
.cs-section { padding: 80px 0; }
.cs-section.cs-dark {
  background: rgba(255,255,255,0.01);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.cs-two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.cs-text h2 {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 20px;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.cs-text p {
  font-size: 15px;
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: 16px;
}

.cs-info-cards {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.cs-info-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--color-border);
  border-radius: 12px;
}

.cs-info-card > i {
  font-size: 20px;
  color: var(--color-primary);
  width: 24px;
  text-align: center;
}

.cs-info-card span {
  display: block;
  font-size: 11px;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 2px;
}

.cs-info-card strong {
  font-size: 14px;
  font-weight: 600;
}

/* ========== IMPACT GRID ========== */
.cs-section h2 {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 40px;
}

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

.cs-impact-card {
  padding: 28px 24px;
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  transition: all 0.3s ease;
}

.cs-impact-card:hover {
  border-color: var(--color-primary);
  background: rgba(0,212,255,0.04);
  transform: translateY(-4px);
}

.cs-impact-card > i {
  font-size: 28px;
  color: var(--color-primary);
  margin-bottom: 16px;
  display: block;
}

.cs-impact-card h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 10px;
}

.cs-impact-card p {
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ========== CTA ========== */
.cs-cta {
  padding: 100px 0;
  background: radial-gradient(ellipse at center, rgba(0,212,255,0.08) 0%, transparent 70%);
}

.cs-cta h2 {
  font-size: 40px;
  font-weight: 800;
  margin-bottom: 16px;
}

.cs-cta p {
  font-size: 16px;
  color: var(--color-text-muted);
  margin-bottom: 32px;
}

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

.cs-footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--color-text);
  margin-bottom: 12px;
}

.cs-footer-logo img {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  object-fit: cover;
}

.cs-footer-logo span {
  font-size: 18px;
  font-weight: 600;
}

.cs-footer p {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-top: 8px;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
  .cs-stat-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .cs-two-col { grid-template-columns: 1fr; gap: 40px; }
  .cs-hero h1 { font-size: 32px; }
  .cs-hero p { font-size: 15px; }
  .cs-section h2 { font-size: 28px; }
  .cs-cta h2 { font-size: 28px; }
  .back-btn { top: 12px; left: 12px; padding: 8px 14px; font-size: 12px; }
}

@media (max-width: 480px) {
  .cs-stat-grid { grid-template-columns: repeat(2, 1fr); }
  .cs-stat-num { font-size: 26px; }
  .cs-links { flex-direction: column; align-items: center; }
}