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

:root {
  --bg: #fafafa;
  --bg-card: #ffffff;
  --text: #1a1a2e;
  --text-muted: #6b7280;
  --border: #e5e7eb;
  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --danger: #ef4444;
  --danger-hover: #dc2626;
  --success: #10b981;
  --warning: #f59e0b;
  --info: #3b82f6;
  --error: #ef4444;
  --radius: 8px;
  --radius-lg: 12px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 4px 12px rgba(0, 0, 0, 0.1);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Fira Mono", "Roboto Mono", monospace;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

/* Navbar */
.navbar {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  padding: 0 1.5rem;
  height: 56px;
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-inner {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav-brand {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.nav-user {
  color: var(--text-muted);
  font-size: 0.875rem;
}

/* Container */
.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

/* Cards */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text);
  cursor: pointer;
  text-decoration: none;
  transition: all 0.15s ease;
  line-height: 1.4;
}

.btn:hover {
  background: var(--bg);
  border-color: #d1d5db;
}

.btn-primary {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

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

.btn-danger {
  background: transparent;
  color: var(--danger);
  border-color: var(--danger);
}

.btn-danger:hover {
  background: var(--danger);
  color: white;
}

.btn-ghost {
  border-color: transparent;
  background: transparent;
}

.btn-ghost:hover {
  background: var(--bg);
  border-color: var(--border);
}

.btn-sm {
  padding: 0.25rem 0.625rem;
  font-size: 0.8125rem;
}

.btn-full {
  width: 100%;
}

/* Forms */
.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 0.375rem;
  color: var(--text);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.5rem 0.75rem;
  font-size: 0.9375rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-card);
  color: var(--text);
  outline: none;
  transition: border-color 0.15s ease;
  font-family: var(--font);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-group input::placeholder {
  color: #9ca3af;
}

.form-inline {
  display: flex;
  gap: 0.75rem;
  align-items: flex-end;
}

.form-inline .form-group {
  margin-bottom: 0;
}

.flex-1 {
  flex: 1;
}

/* Alerts */
.alert {
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  font-size: 0.875rem;
  margin-bottom: 1rem;
}

.alert-error {
  background: #fef2f2;
  color: #991b1b;
  border: 1px solid #fecaca;
}

.alert-success {
  background: #f0fdf4;
  color: #166534;
  border: 1px solid #bbf7d0;
}

.alert-sm {
  padding: 0.5rem 0.75rem;
  font-size: 0.8125rem;
  margin-top: 0.75rem;
  margin-bottom: 0;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.125rem 0.5rem;
  font-size: 0.75rem;
  font-weight: 500;
  border-radius: 9999px;
  white-space: nowrap;
}

.badge-neutral {
  background: #f3f4f6;
  color: #374151;
}

.badge-info {
  background: #eff6ff;
  color: #1d4ed8;
}

.badge-success {
  background: #f0fdf4;
  color: #166534;
}

.badge-warning {
  background: #fffbeb;
  color: #92400e;
}

.badge-error {
  background: #fef2f2;
  color: #991b1b;
}

/* Login */
.login-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - 56px - 4rem);
}

.login-card {
  width: 100%;
  max-width: 400px;
}

.login-card h1 {
  font-size: 1.5rem;
  margin-bottom: 0.25rem;
}

.login-card .text-muted {
  margin-bottom: 1.5rem;
}

.login-card .form {
  margin-top: 1rem;
}

/* Page header */
.page-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1.5rem;
  gap: 1rem;
}

.page-header h1 {
  font-size: 1.75rem;
  letter-spacing: -0.02em;
}

.page-actions {
  display: flex;
  gap: 0.5rem;
  flex-shrink: 0;
}

.back-link {
  font-size: 0.875rem;
  color: var(--text-muted);
  text-decoration: none;
  margin-bottom: 0.25rem;
  display: inline-block;
}

.back-link:hover {
  color: var(--primary);
}

/* Feed cards */
.add-feed-card {
  margin-bottom: 1.5rem;
}

.add-feed-card h2 {
  font-size: 1rem;
  margin-bottom: 0.75rem;
}

.feed-grid {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.feed-card-header {
  display: flex;
  gap: 1rem;
  margin-bottom: 1rem;
}

.feed-image {
  width: 64px;
  height: 64px;
  border-radius: var(--radius);
  object-fit: cover;
  flex-shrink: 0;
}

.feed-info h3 {
  font-size: 1.0625rem;
  margin-bottom: 0.25rem;
}

.feed-info h3 a {
  color: var(--text);
  text-decoration: none;
}

.feed-info h3 a:hover {
  color: var(--primary);
}

.feed-description {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.feed-card-actions {
  display: flex;
  gap: 0.5rem;
  border-top: 1px solid var(--border);
  padding-top: 0.75rem;
}

/* Episodes */
.episodes-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.episode-card {
  padding: 1.25rem;
}

.episode-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.episode-info h3 {
  font-size: 1rem;
  margin-bottom: 0.375rem;
}

.episode-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.episode-description {
  margin-top: 0.5rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.episode-audio {
  margin-top: 0.75rem;
}

.episode-audio audio {
  width: 100%;
  height: 36px;
}

/* Ad segments details */
.ad-segments {
  margin-top: 0.75rem;
}

.ad-segments summary {
  font-size: 0.8125rem;
  color: var(--text-muted);
  cursor: pointer;
  user-select: none;
}

.ad-segments summary:hover {
  color: var(--text);
}

/* Table */
.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8125rem;
  margin-top: 0.5rem;
}

.table th,
.table td {
  text-align: left;
  padding: 0.375rem 0.5rem;
  border-bottom: 1px solid var(--border);
}

.table th {
  font-weight: 500;
  color: var(--text-muted);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--text-muted);
}

/* Utility */
.text-muted {
  color: var(--text-muted);
}

.text-sm {
  font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 640px) {
  .container {
    padding: 1rem;
  }

  .form-inline {
    flex-direction: column;
  }

  .page-header {
    flex-direction: column;
  }

  .feed-card-actions {
    flex-wrap: wrap;
  }
}