/* Sayfa özel stilleri */
.page-hero {
  padding: calc(var(--header-h) + 3rem) 0 3rem;
  text-align: center;
}

.page-hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  margin-bottom: 0.75rem;
}

.auth-card {
  max-width: 420px;
  margin: 0 auto;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2.5rem;
  backdrop-filter: blur(12px);
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 0.4rem;
  color: var(--text-muted);
}

.form-input {
  width: 100%;
  padding: 0.75rem 1rem;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: var(--font);
  font-size: 1rem;
  transition: border-color 0.2s;
}

.form-input:focus {
  outline: none;
  border-color: var(--primary);
}

.form-error {
  color: var(--coral);
  font-size: 0.85rem;
  margin-top: 0.5rem;
}

.form-footer {
  text-align: center;
  margin-top: 1.5rem;
  color: var(--text-muted);
  font-size: 0.9rem;
}

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

/* Kurs kartları */
.courses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

.course-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.3s, border-color 0.3s;
  text-decoration: none;
  color: inherit;
  display: block;
}

.course-card:hover {
  transform: translateY(-4px);
  border-color: rgba(56, 189, 248, 0.3);
}

.course-card-cover {
  height: 140px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  background: linear-gradient(135deg, rgba(56,189,248,0.15), rgba(167,139,250,0.15));
}

.course-card-body { padding: 1.5rem; }

.course-card-meta {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
}

.course-tag {
  font-size: 0.75rem;
  padding: 0.25rem 0.6rem;
  border-radius: 6px;
  background: rgba(255,255,255,0.06);
  color: var(--text-muted);
}

.course-card h3 { font-size: 1.15rem; margin-bottom: 0.5rem; }
.course-card p { color: var(--text-muted); font-size: 0.9rem; }

/* Ders listesi */
.lesson-list { list-style: none; }

.lesson-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 0.75rem;
  transition: border-color 0.2s;
}

.lesson-item.accessible { cursor: pointer; }
.lesson-item.accessible:hover { border-color: var(--primary); }
.lesson-item.locked { opacity: 0.65; }

.lesson-num {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(56, 189, 248, 0.15);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
  flex-shrink: 0;
}

.lesson-item.completed .lesson-num {
  background: rgba(74, 222, 128, 0.2);
  color: var(--success);
}

.lesson-info { flex: 1; }
.lesson-info h4 { font-size: 1rem; margin-bottom: 0.2rem; }
.lesson-info span { font-size: 0.8rem; color: var(--text-muted); }

.lesson-badge {
  font-size: 0.75rem;
  padding: 0.3rem 0.7rem;
  border-radius: 6px;
  font-weight: 600;
}

.badge-free { background: rgba(74, 222, 128, 0.15); color: var(--success); }
.badge-lock { background: rgba(251, 113, 133, 0.15); color: var(--coral); }
.badge-done { background: rgba(56, 189, 248, 0.15); color: var(--primary); }

/* Fiyatlandırma */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  max-width: 800px;
  margin: 0 auto;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  text-align: center;
  position: relative;
}

.pricing-card.featured {
  border-color: var(--primary);
  box-shadow: 0 0 40px rgba(56, 189, 248, 0.15);
}

.pricing-card .popular {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.3rem 1rem;
  border-radius: 999px;
}

.pricing-price {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--primary);
  margin: 1rem 0;
}

.pricing-price small {
  font-size: 1rem;
  color: var(--text-muted);
  font-weight: 400;
}

.pricing-features {
  list-style: none;
  text-align: left;
  margin: 1.5rem 0;
}

.pricing-features li {
  padding: 0.5rem 0;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.pricing-features li::before {
  content: '✓ ';
  color: var(--success);
  font-weight: 700;
}

/* Panel */
.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.dash-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  text-align: center;
}

.dash-card strong {
  display: block;
  font-size: 2rem;
  color: var(--primary);
  margin-bottom: 0.25rem;
}

.dash-card span { font-size: 0.85rem; color: var(--text-muted); }

.sub-status {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 2rem;
}

.sub-active { border-color: rgba(74, 222, 128, 0.4); }
.sub-expired { border-color: rgba(251, 113, 133, 0.4); }

/* Ders görüntüleyici */
.lesson-viewer {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 1.5rem;
  min-height: 60vh;
}

.section-sidebar {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
}

.section-nav-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.9rem;
  transition: background 0.2s;
  margin-bottom: 0.25rem;
}

.section-nav-item:hover { background: rgba(255,255,255,0.05); }
.section-nav-item.active { background: rgba(56, 189, 248, 0.12); color: var(--primary); }
.section-nav-item.done { color: var(--success); }

.section-content {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
}

.section-content h2 { margin-bottom: 1rem; }

.video-placeholder {
  aspect-ratio: 16/9;
  background: #0f172a;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  margin-bottom: 1rem;
}

.quiz-option {
  display: block;
  width: 100%;
  text-align: left;
  padding: 0.85rem 1rem;
  margin-bottom: 0.5rem;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-family: var(--font);
  cursor: pointer;
  transition: border-color 0.2s;
}

.quiz-option:hover { border-color: var(--primary); }
.quiz-option.correct { border-color: var(--success); background: rgba(74,222,128,0.1); }
.quiz-option.wrong { border-color: var(--coral); background: rgba(251,113,133,0.1); }

/* Sertifika */
.cert-card {
  background: linear-gradient(135deg, rgba(56,189,248,0.1), rgba(167,139,250,0.1));
  border: 1px solid rgba(56, 189, 248, 0.25);
  border-radius: var(--radius);
  padding: 2rem;
  text-align: center;
  margin-bottom: 1rem;
}

.cert-code {
  font-family: var(--mono);
  font-size: 1.2rem;
  color: var(--primary);
  letter-spacing: 0.1em;
  margin: 1rem 0;
}

/* Admin */
.admin-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  min-height: 100vh;
}

.admin-sidebar {
  background: #0a0f1a;
  border-right: 1px solid var(--border);
  padding: 1.5rem;
  position: fixed;
  width: 240px;
  height: 100vh;
  overflow-y: auto;
}

.admin-sidebar .logo { margin-bottom: 2rem; }

.admin-nav a {
  display: block;
  padding: 0.75rem 1rem;
  color: var(--text-muted);
  text-decoration: none;
  border-radius: 8px;
  margin-bottom: 0.25rem;
  font-size: 0.9rem;
  transition: background 0.2s, color 0.2s;
}

.admin-nav a:hover, .admin-nav a.active {
  background: rgba(56, 189, 248, 0.1);
  color: var(--primary);
}

.admin-main {
  margin-left: 240px;
  padding: 2rem;
}

.admin-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.admin-table th, .admin-table td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.admin-table th {
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
}

.admin-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.admin-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.admin-stat {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1.25rem;
  text-align: center;
}

.admin-stat strong { display: block; font-size: 1.75rem; color: var(--primary); }
.admin-stat span { font-size: 0.8rem; color: var(--text-muted); }

.sub-badge {
  font-size: 0.75rem;
  padding: 0.25rem 0.6rem;
  background: rgba(251, 191, 36, 0.15);
  color: var(--warning);
  border-radius: 6px;
  margin-right: 0.5rem;
}

.age-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  margin-bottom: 2rem;
}

@media (max-width: 900px) {
  .lesson-viewer { grid-template-columns: 1fr; }
  .admin-layout { grid-template-columns: 1fr; }
  .admin-sidebar { position: relative; width: 100%; height: auto; }
  .admin-main { margin-left: 0; }
}