/* Facebook Video Downloader Custom Styles */
/* Uses Tailwind CSS via CDN - this file contains custom overrides */

:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --secondary: #64748b;
  --success: #22c55e;
  --error: #ef4444;
  --warning: #f59e0b;
  --bg-light: #f8fafc;
  --bg-dark: #0f172a;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --facebook-blue: #1877f2;
}

/* Custom Font */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* URL Input Zone */
.url-input-zone {
  border: 2px solid #e2e8f0;
  border-radius: 1rem;
  padding: 2rem;
  text-align: center;
  transition: all 0.3s ease;
  background: white;
}

.url-input-zone:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
}

.url-input {
  width: 100%;
  padding: 1rem 1.25rem;
  border: 2px solid #e2e8f0;
  border-radius: 0.75rem;
  font-size: 1rem;
  transition: all 0.2s ease;
  background: #f8fafc;
}

.url-input:focus {
  outline: none;
  border-color: var(--primary);
  background: white;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.url-input::placeholder {
  color: #94a3b8;
}

/* Video Preview Card */
.video-preview {
  background: white;
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  border: 1px solid #e2e8f0;
}

.video-thumbnail {
  position: relative;
  background: #1e293b;
  aspect-ratio: 16/9;
  display: flex;
  align-items: center;
  justify-content: center;
}

.video-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.video-thumbnail .play-icon {
  position: absolute;
  width: 60px;
  height: 60px;
  background: rgba(255, 255, 255, 0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Quality Selector */
.quality-options {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
}

.quality-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border: 2px solid #e2e8f0;
  border-radius: 0.5rem;
  background: white;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.quality-btn:hover {
  border-color: var(--primary);
  background: #eff6ff;
}

.quality-btn.hd {
  border-color: var(--success);
  background: #f0fdf4;
  color: #16a34a;
}

.quality-btn.sd {
  border-color: var(--primary);
  background: #eff6ff;
  color: var(--primary);
}

/* Progress Bar */
.progress-bar {
  height: 8px;
  background: #e2e8f0;
  border-radius: 4px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary) 0%, #3b82f6 100%);
  border-radius: 4px;
  transition: width 0.3s ease;
}

/* Download States */
.state-idle { display: block; }
.state-loading { display: none; }
.state-ready { display: none; }
.state-error { display: none; }

[data-state="loading"] .state-idle { display: none; }
[data-state="loading"] .state-loading { display: block; }

[data-state="ready"] .state-idle { display: none; }
[data-state="ready"] .state-ready { display: block; }

[data-state="error"] .state-idle { display: none; }
[data-state="error"] .state-error { display: block; }

/* Button Styles */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-weight: 600;
  border-radius: 0.5rem;
  transition: all 0.2s ease;
  cursor: pointer;
  border: none;
  font-size: 1rem;
  gap: 0.5rem;
}

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

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.btn-primary:disabled {
  background: #94a3b8;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

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

.btn-facebook:hover {
  background: #1565d8;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(24, 119, 242, 0.3);
}

.btn-secondary {
  background: white;
  color: var(--text-primary);
  border: 1px solid #e2e8f0;
}

.btn-secondary:hover {
  background: #f8fafc;
  border-color: #cbd5e1;
}

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

.btn-success:hover {
  background: #16a34a;
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1.125rem;
}

/* Card Styles */
.card {
  background: white;
  border-radius: 1rem;
  padding: 1.5rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  border: 1px solid #e2e8f0;
}

.card-hover:hover {
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
  transform: translateY(-2px);
  transition: all 0.3s ease;
}

/* Feature Badge */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 9999px;
}

.badge-primary {
  background: #dbeafe;
  color: var(--primary);
}

.badge-success {
  background: #dcfce7;
  color: #16a34a;
}

.badge-warning {
  background: #fef3c7;
  color: #d97706;
}

/* FAQ Accordion */
.faq-item {
  border-bottom: 1px solid #e2e8f0;
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 0;
  cursor: pointer;
  font-weight: 600;
  color: var(--text-primary);
}

.faq-question:hover {
  color: var(--primary);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
  color: var(--text-secondary);
}

.faq-item.active .faq-answer {
  max-height: 500px;
  padding-bottom: 1.25rem;
}

.faq-icon {
  transition: transform 0.3s ease;
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

/* Step Cards */
.step-card {
  text-align: center;
  padding: 2rem;
}

.step-number {
  width: 3rem;
  height: 3rem;
  background: var(--primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.25rem;
  margin: 0 auto 1rem;
}

.step-icon {
  width: 4rem;
  height: 4rem;
  background: #dbeafe;
  border-radius: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
  color: var(--primary);
}

/* Header */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid #e2e8f0;
}

/* Footer */
.footer {
  background: var(--bg-dark);
  color: #94a3b8;
}

.footer a:hover {
  color: white;
}

/* Spinner */
.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid #e2e8f0;
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

/* Pulse Animation */
.pulse {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* Toast Notification */
.toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  padding: 1rem 1.5rem;
  border-radius: 0.5rem;
  color: white;
  font-weight: 500;
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.3s ease;
  z-index: 100;
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

.toast-success { background: var(--success); }
.toast-error { background: var(--error); }
.toast-warning { background: var(--warning); }

/* Trust Badges */
.trust-badges {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  flex-wrap: wrap;
}

.trust-badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: white;
  border-radius: 9999px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

/* Supported Formats */
.format-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.25rem 0.5rem;
  background: #f1f5f9;
  border-radius: 0.25rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
}

/* Ad Banner Placeholder */
.ad-banner {
  background: #f1f5f9;
  border: 1px dashed #cbd5e1;
  border-radius: 0.5rem;
  padding: 2rem;
  text-align: center;
  color: #64748b;
  min-height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
  .url-input-zone {
    padding: 1.5rem;
  }

  .quality-options {
    flex-direction: column;
  }

  .quality-btn {
    width: 100%;
    justify-content: center;
  }

  .trust-badges {
    flex-direction: column;
    align-items: center;
  }

  .header nav {
    display: none;
  }

  .header.menu-open nav {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    padding: 1rem;
    border-bottom: 1px solid #e2e8f0;
  }
}

/* Print Styles */
@media print {
  .header, .footer, .ad-banner, .btn {
    display: none !important;
  }
}