/* Den – Uygulama theme renkleri (den-app/src/theme/colors.ts) */
:root {
  /* Primary */
  --primary: #64b5f6;
  --primary-dark: #2196f3;
  --primary-light: #90caf9;

  /* Dark theme (site dark kullanıyor) */
  --bg-primary: #1a1a2e;
  --bg-secondary: #16213e;
  --bg-card: #1e2a47;
  --surface: rgba(255, 255, 255, 0.05);
  --surface-elevated: rgba(255, 255, 255, 0.08);

  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.7);
  --text-tertiary: rgba(255, 255, 255, 0.5);

  --border: rgba(100, 181, 246, 0.3);
  --border-light: rgba(255, 255, 255, 0.1);

  --success: #4caf50;
  --error: #f44336;
  --warning: #ff9800;

  --primary-soft: rgba(100, 181, 246, 0.2);
  --font: 'Outfit', system-ui, sans-serif;
  --radius: 16px;
  --radius-sm: 10px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* Header */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(26, 26, 46, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-light);
}

.nav {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}

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

/* Hero */
.hero {
  max-width: 1100px;
  margin: 0 auto;
  padding: 4rem 1.5rem 5rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
  min-height: 75vh;
}

@media (max-width: 768px) {
  .hero {
    grid-template-columns: 1fr;
    text-align: center;
    padding: 3rem 1.5rem 4rem;
  }
}

.hero-title {
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin: 0 0 1rem;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin: 0 0 2rem;
  max-width: 420px;
}

@media (max-width: 768px) {
  .hero-subtitle {
    margin-left: auto;
    margin-right: auto;
  }
}

.hero-cta {
  margin-top: 0.5rem;
}

.btn {
  display: inline-block;
  padding: 0.9rem 1.75rem;
  font-family: var(--font);
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: transform 0.2s, box-shadow 0.2s;
}

.btn-primary {
  background: var(--primary-dark);
  color: #fff;
  border: none;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px var(--primary-soft);
}

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.phone-mockup {
  width: 260px;
  height: 520px;
  background: linear-gradient(145deg, var(--bg-secondary) 0%, #0f0f1a 100%);
  border-radius: 36px;
  padding: 12px;
  box-shadow:
    0 25px 50px -12px rgba(0, 0, 0, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border);
}

.phone-screen {
  width: 100%;
  height: 100%;
  background: var(--bg-primary);
  border-radius: 26px;
  overflow: hidden;
  background-image:
    radial-gradient(ellipse 80% 50% at 50% -20%, var(--primary-soft), transparent),
    linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

/* Features */
.features {
  max-width: 1100px;
  margin: 0 auto;
  padding: 5rem 1.5rem;
}

.section-title {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 700;
  text-align: center;
  margin: 0 0 3rem;
  letter-spacing: -0.02em;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

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

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  transition: border-color 0.2s, transform 0.2s;
}

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

.feature-icon {
  font-size: 1.5rem;
  color: var(--primary);
  margin-bottom: 1rem;
  opacity: 0.9;
}

.feature-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin: 0 0 0.5rem;
}

.feature-card p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* Download */
.download {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-light);
  padding: 5rem 1.5rem;
}

.download-content {
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}

.download .section-title {
  margin-bottom: 0.75rem;
}

.download-text {
  color: var(--text-secondary);
  margin: 0 0 2rem;
}

.store-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.store-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 180px;
  padding: 1rem 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  text-decoration: none;
  font-family: var(--font);
  font-weight: 500;
  font-size: 0.95rem;
  transition: background 0.2s, border-color 0.2s;
}

.store-btn:hover {
  background: var(--surface-elevated);
  border-color: var(--primary);
}

.download-note {
  font-size: 0.85rem;
  color: var(--text-tertiary);
  margin: 0;
}

/* Footer */
.footer {
  padding: 2rem 1.5rem;
  text-align: center;
  border-top: 1px solid var(--border-light);
}

.footer p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.footer a {
  transition: color 0.2s;
}

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

/* Content Page (Privacy Policy, etc.) */
.content-page {
  max-width: 900px;
  margin: 0 auto;
  padding: 3rem 1.5rem 5rem;
}

.content-container {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 3rem;
}

@media (max-width: 768px) {
  .content-container {
    padding: 2rem 1.5rem;
  }
}

.content-title {
  font-size: clamp(2rem, 4vw, 2.5rem);
  font-weight: 700;
  margin: 0 0 0.5rem;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.content-updated {
  font-size: 0.9rem;
  color: var(--text-tertiary);
  margin: 0 0 2.5rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border-light);
}

.content-body {
  color: var(--text-secondary);
  line-height: 1.8;
}

.content-section {
  margin-bottom: 2.5rem;
}

.content-section:last-child {
  margin-bottom: 0;
}

.content-section h2 {
  font-size: 1.5rem;
  font-weight: 600;
  margin: 0 0 1rem;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.content-section h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin: 1.5rem 0 0.75rem;
  color: var(--text-primary);
}

.content-section p {
  margin: 0 0 1rem;
  font-size: 1rem;
}

.content-section ul {
  margin: 0.75rem 0 1rem;
  padding-left: 1.5rem;
}

.content-section li {
  margin-bottom: 0.5rem;
  font-size: 1rem;
}

.content-section li strong {
  color: var(--text-primary);
  font-weight: 600;
}

.content-footer {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-light);
  text-align: center;
}