:root {
  --bg-primary: #0b0f19;
  --bg-card: rgba(18, 24, 38, 0.75);
  --bg-card-hover: rgba(28, 36, 56, 0.85);
  --border-color: rgba(255, 255, 255, 0.08);
  --accent: #6366f1;
  --accent-hover: #4f46e5;
  --accent-glow: rgba(99, 102, 241, 0.25);
  --success: #10b981;
  --success-glow: rgba(16, 185, 129, 0.2);
  --warning: #f59e0b;
  --danger: #ef4444;
  --text-primary: #f3f4f6;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  --radius: 12px;
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
}

body {
  background-color: var(--bg-primary);
  background-image: 
    radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.12) 0px, transparent 50%),
    radial-gradient(at 100% 100%, rgba(16, 185, 129, 0.08) 0px, transparent 50%);
  background-attachment: fixed;
  color: var(--text-primary);
  min-height: 100vh;
  padding: 24px;
}

.container {
  max-width: 1300px;
  margin: 0 auto;
}

/* Header */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 28px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--accent), #818cf8);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  box-shadow: 0 0 20px var(--accent-glow);
}

.brand-title h1 {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.brand-title p {
  font-size: 13px;
  color: var(--text-secondary);
}

.header-actions {
  display: flex;
  gap: 10px;
}

/* Hero / URL Banner */
.url-banner {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(16, 185, 129, 0.1));
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin-bottom: 28px;
  backdrop-filter: blur(12px);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

.url-info h3 {
  font-size: 14px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  margin-bottom: 6px;
}

.url-box {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(0, 0, 0, 0.4);
  padding: 8px 14px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.url-text {
  font-family: 'Consolas', 'Monaco', monospace;
  font-size: 15px;
  color: #a5b4fc;
  user-select: all;
}

.btn-copy {
  background: var(--accent);
  color: white;
  border: none;
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}

.btn-copy:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

.lan-urls {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 6px;
}

/* Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 28px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 18px 20px;
  backdrop-filter: blur(10px);
  transition: var(--transition);
}

.stat-card:hover {
  border-color: rgba(255, 255, 255, 0.15);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}

.stat-label {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-secondary);
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.stat-value {
  font-size: 26px;
  font-weight: 700;
  color: var(--text-primary);
}

.stat-sub {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* Navigation Tabs */
.tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 8px;
}

.tab-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 600;
  padding: 10px 18px;
  border-radius: 8px;
  cursor: pointer;
  transition: var(--transition);
}

.tab-btn:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.tab-btn.active {
  color: white;
  background: var(--accent);
}

/* Content Sections */
.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 24px;
  backdrop-filter: blur(10px);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.card-title {
  font-size: 18px;
  font-weight: 700;
}

/* Buttons */
.btn {
  padding: 10px 18px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: none;
  transition: var(--transition);
}

.btn-primary {
  background: var(--accent);
  color: white;
  box-shadow: 0 0 16px var(--accent-glow);
}

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

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
}

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

/* Form Controls */
.epg-source-row {
  display: grid;
  grid-template-columns: 40px 180px 1fr 85px 36px;
  gap: 12px;
  align-items: center;
  margin-bottom: 12px;
  background: rgba(0, 0, 0, 0.25);
  padding: 10px 14px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.epg-source-row:hover {
  border-color: rgba(255, 255, 255, 0.15);
  background: rgba(0, 0, 0, 0.35);
}

.epg-num {
  font-weight: 700;
  color: var(--text-muted);
  font-size: 13px;
}

.btn-icon-delete {
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #f87171;
  border-radius: 6px;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 14px;
  transition: var(--transition);
}

.btn-icon-delete:hover {
  background: rgba(239, 68, 68, 0.35);
  border-color: #ef4444;
  color: #ffffff;
  transform: scale(1.05);
}

input[type="text"] {
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 8px 12px;
  color: var(--text-primary);
  font-size: 13px;
  outline: none;
  transition: var(--transition);
}

input[type="text"]:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-glow);
}

/* Channel Explorer */
.search-bar {
  display: flex;
  gap: 12px;
  margin-bottom: 18px;
}

.search-input {
  flex: 1;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 10px 16px;
  color: var(--text-primary);
  font-size: 14px;
}

.table-wrapper {
  overflow-x: auto;
  max-height: 600px;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

th {
  background: rgba(0, 0, 0, 0.5);
  color: var(--text-secondary);
  font-weight: 600;
  text-align: left;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 1;
}

td {
  padding: 10px 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

.logo-thumb {
  width: 32px;
  height: 32px;
  object-fit: contain;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.05);
  padding: 2px;
}

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
}

.badge-success {
  background: var(--success-glow);
  color: #34d399;
}

.badge-warning {
  background: rgba(245, 158, 11, 0.2);
  color: #fbbf24;
}

/* Spinner */
.spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: white;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}