/* ============================================================================
   TubeCMS Customer Portal - Styles (Dark Theme)
   ============================================================================ */

:root {
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --secondary: #8b5cf6;
  --accent: #a855f7;
  --bg-dark: #0f0f23;
  --bg-card: #1a1a2e;
  --bg-card-hover: #252542;
  --text: #e2e8f0;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --border: #334155;
  --gradient: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 50%, var(--accent) 100%);
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -2px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -4px rgba(0, 0, 0, 0.3);
  --radius: 12px;
  --radius-lg: 20px;
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-error: #ef4444;
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg-dark);
  overflow-x: hidden;
}

a {
  color: var(--primary);
  text-decoration: none;
}

a:hover {
  color: var(--secondary);
}

p {
  color: var(--text-muted);
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Gradient Text */
.gradient-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
}

.btn-primary {
  background: var(--gradient);
  color: white;
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
  color: white;
}

.btn-secondary,
.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover,
.btn-outline:hover {
  background: var(--bg-card);
  border-color: var(--primary);
  color: var(--text);
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
}

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

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

.btn-white:hover {
  background: var(--text);
  color: var(--primary-dark);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.875rem;
}

.btn-lg {
  padding: 16px 32px;
  font-size: 1rem;
}

.btn-block {
  width: 100%;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(15, 15, 35, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
}

.nav-logo:hover {
  color: var(--text);
}

.logo-icon {
  width: 32px;
  height: 32px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a:not(.btn) {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.95rem;
  transition: color 0.2s ease;
}

.nav-links a:not(.btn):hover {
  color: var(--text);
}

.nav-actions {
  display: flex;
  gap: 12px;
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--text);
}

@media (max-width: 768px) {
  .nav-links,
  .nav-actions {
    display: none;
  }

  .nav-links.mobile-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--bg-dark);
    padding: 24px;
    gap: 16px;
    border-bottom: 1px solid var(--border);
  }

  .mobile-menu-btn {
    display: block;
  }
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 0 80px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(ellipse at 30% 20%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
              radial-gradient(ellipse at 70% 80%, rgba(139, 92, 246, 0.1) 0%, transparent 50%);
  animation: pulse 15s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.1); opacity: 0.8; }
}

.hero-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-content {
  max-width: 560px;
}

.hero-content h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 24px;
  color: var(--text);
}

.hero-content p {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin-bottom: 32px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 16px;
}

.hero-note {
  font-size: 0.85rem;
  color: var(--text-dim);
}

.hero-image img {
  max-width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

@media (max-width: 1024px) {
  .hero-container {
    grid-template-columns: 1fr;
    gap: 48px;
    text-align: center;
  }

  .hero-content {
    max-width: none;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-image {
    display: none;
  }
}

/* Section Titles */
.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 64px;
}

.section-header p {
  font-size: 1.1rem;
  margin-top: 16px;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  text-align: center;
  margin-bottom: 16px;
  color: var(--text);
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-muted);
  text-align: center;
  margin-bottom: 48px;
}

/* Features Section */
.features {
  padding: 120px 0;
  position: relative;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  padding: 32px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  transition: all 0.3s ease;
}

.feature-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(99, 102, 241, 0.3);
  transform: translateY(-4px);
}

.feature-icon {
  width: 48px;
  height: 48px;
  background: var(--gradient);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.feature-icon svg {
  width: 24px;
  height: 24px;
  color: white;
}

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text);
}

.feature-card p {
  font-size: 0.95rem;
  line-height: 1.6;
}

@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .features-grid {
    grid-template-columns: 1fr;
  }
}

/* Pricing Section */
.pricing {
  padding: 120px 0;
  background: linear-gradient(180deg, transparent, rgba(99, 102, 241, 0.03), transparent);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
  max-width: 800px;
  margin: 0 auto;
}

.pricing-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 40px;
  border: 1px solid var(--border);
  position: relative;
  transition: all 0.3s ease;
}

.pricing-card:hover {
  border-color: rgba(99, 102, 241, 0.3);
  transform: translateY(-4px);
}

.pricing-card.featured {
  border-color: var(--primary);
  box-shadow: 0 0 40px rgba(99, 102, 241, 0.2);
}

.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient);
  color: white;
  padding: 6px 20px;
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 600;
}

.pricing-header {
  text-align: center;
  margin-bottom: 32px;
}

.pricing-header h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--text);
}

.pricing-price {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 4px;
}

.price-amount {
  font-size: 3rem;
  font-weight: 700;
  color: var(--text);
}

.price-period {
  font-size: 1rem;
  color: var(--text-dim);
}

.pricing-desc {
  margin-top: 8px;
  color: var(--text-dim);
  font-size: 0.9rem;
}

.pricing-features {
  list-style: none;
  margin-bottom: 32px;
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  font-size: 0.95rem;
  color: var(--text-muted);
}

.pricing-features li:last-child {
  border-bottom: none;
}

.pricing-features svg {
  color: var(--color-success);
  flex-shrink: 0;
}

.pricing-note {
  text-align: center;
  margin-top: 32px;
  color: var(--text-dim);
  font-size: 0.9rem;
}

@media (max-width: 640px) {
  .pricing-grid {
    grid-template-columns: 1fr;
  }
}

/* CTA Section */
.cta {
  padding: 120px 0;
  position: relative;
}

.cta::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(ellipse, rgba(99, 102, 241, 0.15), transparent 70%);
  pointer-events: none;
}

.cta-content {
  text-align: center;
  max-width: 640px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.cta h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--text);
}

.cta p {
  font-size: 1.15rem;
  margin-bottom: 32px;
}

.cta-buttons {
  display: flex;
  justify-content: center;
  gap: 16px;
}

@media (max-width: 480px) {
  .cta-buttons {
    flex-direction: column;
    align-items: center;
  }
}

/* Footer */
.footer {
  padding: 80px 0 32px;
  border-top: 1px solid var(--border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 2fr;
  gap: 80px;
  margin-bottom: 48px;
}

.footer-brand .nav-logo {
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 0.95rem;
  max-width: 280px;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.footer-column h4 {
  color: var(--text);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.footer-column a {
  display: block;
  color: var(--text-muted);
  font-size: 0.95rem;
  padding: 6px 0;
  transition: color 0.2s;
}

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

.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  text-align: center;
}

.footer-bottom p {
  font-size: 0.9rem;
}

.footer-bottom .disclaimer {
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-top: 12px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .footer-links {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

/* ============================================================================
   Auth Pages
   ============================================================================ */

.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: var(--bg-dark);
  position: relative;
}

.auth-page::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(ellipse at 30% 20%, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
              radial-gradient(ellipse at 70% 80%, rgba(139, 92, 246, 0.08) 0%, transparent 50%);
}

.auth-container {
  width: 100%;
  max-width: 400px;
  position: relative;
  z-index: 1;
}

.auth-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border);
}

.auth-logo {
  display: flex;
  justify-content: center;
  margin-bottom: 32px;
}

.auth-title {
  font-size: 1.5rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 8px;
  color: var(--text);
}

.auth-subtitle {
  text-align: center;
  color: var(--text-muted);
  margin-bottom: 32px;
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

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

.form-group input {
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.95rem;
  background: var(--bg-dark);
  color: var(--text);
  transition: all 0.2s ease;
}

.form-group input::placeholder {
  color: var(--text-dim);
}

.form-group input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.form-group input.error {
  border-color: var(--color-error);
}

.form-error {
  color: var(--color-error);
  font-size: 0.75rem;
}

.form-footer {
  text-align: center;
  margin-top: 24px;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.auth-divider {
  display: flex;
  align-items: center;
  gap: 16px;
  margin: 24px 0;
  color: var(--text-dim);
  font-size: 0.875rem;
}

.auth-divider::before,
.auth-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* ============================================================================
   Dashboard
   ============================================================================ */

.dashboard-layout {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 260px;
  background: var(--bg-card);
  border-right: 1px solid var(--border);
  padding: 24px;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  overflow-y: auto;
}

.sidebar-logo {
  margin-bottom: 32px;
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: var(--radius);
  color: var(--text-muted);
  font-weight: 500;
  transition: all 0.2s ease;
}

.sidebar-nav a:hover {
  background: var(--bg-card-hover);
  color: var(--text);
}

.sidebar-nav a.active {
  background: rgba(99, 102, 241, 0.15);
  color: var(--primary);
}

.sidebar-section {
  margin-top: 32px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}

.sidebar-section-title {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-dim);
  margin-bottom: 12px;
  padding: 0 16px;
}

.main-content {
  flex: 1;
  margin-left: 260px;
  padding: 32px;
  background: var(--bg-dark);
}

.page-header {
  margin-bottom: 32px;
}

.page-title {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text);
}

.page-subtitle {
  color: var(--text-muted);
}

/* Cards */
.card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  overflow: hidden;
}

.card-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
}

.card-body {
  padding: 24px;
}

/* Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 32px;
}

.stat-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  padding: 24px;
}

.stat-label {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.stat-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text);
}

.stat-change {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.75rem;
  margin-top: 8px;
  padding: 4px 8px;
  border-radius: 100px;
}

.stat-change.positive {
  background: rgba(16, 185, 129, 0.15);
  color: var(--color-success);
}

.stat-change.negative {
  background: rgba(239, 68, 68, 0.15);
  color: var(--color-error);
}

@media (max-width: 1024px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .sidebar {
    display: none;
  }

  .main-content {
    margin-left: 0;
  }

  .stats-grid {
    grid-template-columns: 1fr;
  }
}

/* Tables */
.table-container {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th {
  text-align: left;
  padding: 12px 16px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-dim);
  background: var(--bg-dark);
  border-bottom: 1px solid var(--border);
}

td {
  padding: 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  font-size: 0.875rem;
  color: var(--text-muted);
}

tr:hover td {
  background: var(--bg-card-hover);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 600;
}

.badge-success {
  background: rgba(16, 185, 129, 0.15);
  color: var(--color-success);
}

.badge-warning {
  background: rgba(245, 158, 11, 0.15);
  color: var(--color-warning);
}

.badge-error {
  background: rgba(239, 68, 68, 0.15);
  color: var(--color-error);
}

.badge-gray {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-muted);
}

.badge-primary {
  background: rgba(99, 102, 241, 0.15);
  color: var(--primary);
  border: 1px solid rgba(99, 102, 241, 0.3);
}

/* License Key Display */
.license-key {
  font-family: 'Monaco', 'Menlo', 'Consolas', monospace;
  font-size: 0.8rem;
  background: var(--bg-dark);
  padding: 8px 12px;
  border-radius: var(--radius);
  display: inline-flex;
  align-items: center;
  gap: 12px;
  border: 1px solid var(--border);
  color: var(--text);
}

.license-key button {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-dim);
  padding: 4px;
}

.license-key button:hover {
  color: var(--primary);
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 48px 24px;
}

.empty-state-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 16px;
  color: var(--text-dim);
}

.empty-state h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text);
}

.empty-state p {
  color: var(--text-muted);
  margin-bottom: 24px;
}

/* Alerts */
.alert {
  padding: 16px;
  border-radius: var(--radius);
  margin-bottom: 24px;
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.alert-success {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.2);
  color: #6ee7b7;
}

.alert-error {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.2);
  color: #fca5a5;
}

.alert-warning {
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.2);
  color: #fcd34d;
}

.alert-info {
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.2);
  color: #a5b4fc;
}

/* Loading Spinner */
.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  z-index: 1000;
}

.modal {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  max-width: 500px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  border: 1px solid var(--border);
}

.modal-header {
  padding: 24px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text);
}

.modal-close {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-dim);
  padding: 8px;
}

.modal-close:hover {
  color: var(--text);
}

.modal-body {
  padding: 24px;
}

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}

/* Utilities */
.hidden {
  display: none !important;
}

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

.text-right {
  text-align: right;
}

.mt-4 {
  margin-top: 16px;
}

.mb-4 {
  margin-bottom: 16px;
}

.flex {
  display: flex;
}

.items-center {
  align-items: center;
}

.justify-between {
  justify-content: space-between;
}

.gap-2 {
  gap: 8px;
}

.gap-4 {
  gap: 16px;
}