:root {
  --font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --bg-color: #f8fafc;
  --card-bg: #ffffff;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --border-color: #e2e8f0;
  --primary-color: #2563eb;
  --primary-hover: #1d4ed8;
  --success-color: #16a34a;
  --success-hover: #15803d;
  --danger-color: #dc2626;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-color);
  color: var(--text-primary);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

.page-wrapper {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.container {
  width: 100%;
  max-width: 680px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Header */
.header {
  background-color: var(--card-bg);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 0;
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.service-status {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.3rem 0.75rem;
  background-color: #f0fdf4;
  border: 1px solid #bbf7d0;
  border-radius: 9999px;
  font-size: 0.8rem;
  font-weight: 500;
  color: #166534;
  max-width: 380px;
}

.status-indicator-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: #22c55e;
  box-shadow: 0 0 0 2px rgba(34, 197, 94, 0.2);
  flex-shrink: 0;
}

.status-indicator-text {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 1.25rem;
}

.brand-icon {
  width: 26px;
  height: 26px;
  color: var(--primary-color);
}

/* Main Content */
.main-content {
  flex: 1;
  padding: 2.5rem 0 3.5rem 0;
}

/* Hero */
.hero {
  text-align: center;
  margin-bottom: 2rem;
}

.hero-title {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
}

/* Cards */
.card {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-md);
  margin-bottom: 1.5rem;
  transition: all 0.2s ease;
}

/* Form */
.url-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.url-input {
  width: 100%;
  padding: 0.95rem 9.5rem 0.95rem 1rem;
  font-size: 1rem;
  font-family: inherit;
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-md);
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
  background-color: #ffffff;
}

.url-input:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.input-actions {
  position: absolute;
  right: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.input-action-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.45rem 0.75rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  background-color: #f1f5f9;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.15s ease;
}

.input-action-btn:hover {
  background-color: #e2e8f0;
  color: var(--text-primary);
}

.input-action-btn svg {
  width: 14px;
  height: 14px;
}

.clear-btn {
  color: #64748b;
}

.clear-btn:hover {
  background-color: #fee2e2;
  color: #dc2626;
  border-color: #fca5a5;
}

/* Platform Detector */
.platform-detector {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.65rem;
  font-size: 0.775rem;
  font-weight: 700;
  text-transform: uppercase;
  border-radius: 9999px;
  letter-spacing: 0.04em;
}

.badge-youtube {
  background-color: #fee2e2;
  color: #b91c1c;
}

.badge-instagram {
  background-color: #fce7f3;
  color: #be185d;
}

.badge-facebook {
  background-color: #dbeafe;
  color: #1d4ed8;
}

.badge-tiktok {
  background-color: #e2e8f0;
  color: #0f172a;
}

.badge-account {
  background-color: #f1f5f9;
  border: 1px solid #e2e8f0;
  color: #475569;
  text-transform: none;
  font-weight: 500;
  letter-spacing: normal;
}

.form-actions {
  display: flex;
  justify-content: flex-end;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.4rem;
  font-size: 0.95rem;
  font-weight: 600;
  font-family: inherit;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.15s ease;
}

.btn-large {
  padding: 0.95rem 1.6rem;
  font-size: 1.05rem;
}

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

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

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

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

.btn-secondary {
  background-color: #f1f5f9;
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background-color: #e2e8f0;
  color: var(--text-primary);
}

.btn-spinner {
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.4);
  border-radius: 50%;
  border-top-color: #ffffff;
  animation: spin 0.8s linear infinite;
}

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

/* Alert */
.alert {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  margin-bottom: 1.5rem;
}

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

.alert-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  margin-top: 0.15rem;
}

.alert-text {
  font-size: 0.95rem;
  font-weight: 500;
}

/* Progress */
.card-progress {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.progress-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.95rem;
  font-weight: 600;
}

.progress-pct {
  color: var(--primary-color);
}

.progress-bar-wrapper {
  height: 8px;
  background-color: #e2e8f0;
  border-radius: 9999px;
  overflow: hidden;
  position: relative;
}

.progress-bar {
  height: 100%;
  background-color: var(--primary-color);
  border-radius: 9999px;
  transition: width 0.3s ease;
}

.progress-bar.indeterminate {
  width: 35%;
  animation: indeterminate 1.5s infinite ease-in-out;
}

@keyframes indeterminate {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(350%); }
}

.progress-subtext {
  font-size: 0.825rem;
  color: var(--text-muted);
}

/* Preview Card */
.preview-media {
  display: flex;
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}

.preview-thumbnail {
  width: 140px;
  height: 95px;
  object-fit: cover;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  flex-shrink: 0;
}

.preview-info {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.preview-badges {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.badge-duration {
  background-color: #f1f5f9;
  color: var(--text-secondary);
}

.preview-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.35;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Options */
.download-options {
  border-top: 1px solid var(--border-color);
  padding-top: 1.25rem;
  margin-bottom: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.option-group {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.option-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
}

/* Segmented Control */
.segmented-control {
  display: flex;
  background-color: #f1f5f9;
  padding: 0.25rem;
  border-radius: var(--radius-md);
  gap: 0.25rem;
}

.segment {
  flex: 1;
  text-align: center;
  cursor: pointer;
}

.segment input {
  display: none;
}

.segment-pill {
  display: block;
  padding: 0.6rem 0.75rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all 0.15s ease;
}

.segment input:checked + .segment-pill {
  background-color: #ffffff;
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
}

.select-input {
  padding: 0.65rem 0.9rem;
  font-size: 0.9rem;
  font-family: inherit;
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-md);
  background-color: #ffffff;
  color: var(--text-primary);
  outline: none;
  cursor: pointer;
}

.select-input:focus {
  border-color: var(--primary-color);
}

.preview-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.preview-actions svg {
  width: 20px;
  height: 20px;
}

/* Completed Card */
.card-completed {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.completed-icon-wrapper svg {
  width: 52px;
  height: 52px;
}

.completed-title {
  font-size: 1.4rem;
  font-weight: 700;
}

.completed-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.completed-actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 0.75rem;
}

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

/* Footer */
.footer {
  border-top: 1px solid var(--border-color);
  padding: 1.75rem 0;
  background-color: var(--card-bg);
  text-align: center;
}

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

.footer-account {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-top: 0.4rem;
}

/* Mobile Responsiveness */
@media (max-width: 600px) {
  .header-container {
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.6rem;
  }
  .service-status {
    max-width: 100%;
    font-size: 0.75rem;
  }
  .hero-title {
    font-size: 1.6rem;
  }
  .card {
    padding: 1.25rem;
  }
  .preview-media {
    flex-direction: column;
  }
  .preview-thumbnail {
    width: 100%;
    height: 180px;
  }
  .preview-actions {
    flex-direction: column;
    width: 100%;
  }
  .preview-actions .btn {
    width: 100%;
  }
  .completed-actions {
    flex-direction: column;
    width: 100%;
  }
  .completed-actions .btn {
    width: 100%;
  }
}