/**
 * YouTube Downloader - Ultra Clean
 * Layout: Horizontal | Cores: Vermelho/Preto/Branco
 */

:root {
  --bg-primary: #000000;
  --bg-card: #1a1a1a;
  --bg-input: #0f0f0f;

  --text-primary: #ffffff;
  --text-secondary: #999999;

  --accent-primary: #dc2626;
  --accent-hover: #b91c1c;
  --accent-light: rgba(220, 38, 38, 0.1);

  --border-color: #2a2a2a;

  --radius: 8px;
  --transition: all 0.3s ease;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.4;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.container {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
}

/* Header */
.header {
  text-align: center;
  margin-bottom: 24px;
}

.header h1 {
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.logo-icon {
  color: var(--accent-primary);
}

/* Input Section with Loading */
.input-section {
  margin-bottom: 20px;
}

.input-wrapper {
  position: relative;
  width: 100%;
}

.input-section input {
  width: 100%;
  padding: 12px 18px;
  padding-right: 50px;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-size: 0.9rem;
  transition: var(--transition);
  outline: none;
}

.input-section input::placeholder {
  color: var(--text-secondary);
}

.input-section input:focus {
  border-color: var(--accent-primary);
  background: var(--bg-card);
}

.input-loading {
  position: absolute;
  right: 15px;
  top: 50%;
  transform: translateY(-50%);
  display: none;
  color: var(--accent-primary);
}

.input-loading.show {
  display: block;
}

.spinner-small {
  animation: spin 1s linear infinite;
}

/* Main Grid: Video (Left) | Controls (Right) */
.main-grid {
  display: none;
  grid-template-columns: 1.2fr 1fr;
  gap: 24px;
  align-items: start;
}

.main-grid.show {
  display: grid;
  animation: fadeIn 0.3s ease;
}

/* Video Column (Left) */
.video-column {
  display: flex;
  flex-direction: column;
}

.video-info {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 16px;
  display: none;
}

.video-info.show {
  display: block;
}

.video-info img {
  width: 100%;
  border-radius: var(--radius);
  margin-bottom: 12px;
}

.video-info h3 {
  font-size: 0.95rem;
  margin-bottom: 12px;
  color: var(--text-primary);
  line-height: 1.3;
}

.video-meta {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.video-meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.video-meta-item .icon {
  color: var(--accent-primary);
}

.meta-value {
  color: var(--text-primary);
  font-weight: 500;
}

/* Controls Column (Right) */
.controls-column {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

/* Format Section */
.format-section {
  display: none;
}

.format-section.show {
  display: block;
  animation: fadeIn 0.3s ease;
}

.format-buttons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.format-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 12px;
  cursor: pointer;
  transition: var(--transition);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.85rem;
}

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

.format-btn.active {
  border-color: var(--accent-primary);
  background: var(--accent-light);
}

.format-icon {
  color: var(--accent-primary);
}

.format-title {
  font-weight: 500;
}

/* Quality Section - RED THEME ONLY */
.quality-section {
  display: none;
}

.quality-section.show {
  display: block;
  animation: fadeIn 0.3s ease;
}

.quality-section select {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-size: 0.85rem;
  cursor: pointer;
  transition: var(--transition);
  outline: none;

  /* Remove default styling */
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;

  /* Custom red arrow */
  background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23dc2626' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 16px;
  padding-right: 36px;
}

.quality-section select:hover {
  border-color: var(--accent-primary);
  background-color: var(--bg-input);
}

.quality-section select:focus {
  border-color: var(--accent-primary);
  background-color: var(--bg-input);
}

/* Dropdown options - RED THEME ONLY */
.quality-section select option {
  background: var(--bg-card);
  color: var(--text-primary);
  padding: 8px;
}

.quality-section select option:checked {
  background: var(--accent-primary);
  color: white;
}

.quality-section select option:hover {
  background: var(--accent-light);
  color: var(--text-primary);
}

.quality-section select option:disabled {
  color: var(--text-secondary);
  background: var(--bg-card);
}

/* Buttons */
.btn {
  width: 100%;
  padding: 12px 18px;
  border: none;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  display: none;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.btn.show {
  display: flex;
}

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

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

.btn-primary.show {
  display: flex;
  animation: fadeIn 0.3s ease;
}

.btn-primary:hover:not(:disabled) {
  background: var(--accent-hover);
}

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

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

.btn-icon {
  color: white;
}

/* Spinner */
.spinner {
  width: 14px;
  height: 14px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  display: inline-block;
}

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

/* Progress Container */
.progress-container {
  display: none;
}

.progress-container.show {
  display: block;
  animation: fadeIn 0.3s ease;
}

.progress-bar {
  height: 6px;
  background: var(--bg-card);
  border-radius: 20px;
  overflow: hidden;
  margin-bottom: 6px;
  border: 1px solid var(--border-color);
}

.progress-fill {
  height: 100%;
  background: var(--accent-primary);
  border-radius: 20px;
  transition: width 0.3s ease;
}

.progress-percentage {
  display: block;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-weight: 500;
}

/* Status Messages - Hide when progress is showing */
.status {
  padding: 10px 14px;
  border-radius: var(--radius);
  display: none;
  font-size: 0.8rem;
  text-align: center;
}

.status.show {
  display: block;
  animation: fadeIn 0.3s ease;
}

/* Hide status when progress is visible */
.progress-container.show ~ .status {
  display: none !important;
}

.status.info {
  background: var(--accent-light);
  border: 1px solid var(--accent-primary);
  color: var(--accent-primary);
}

.status.success {
  background: rgba(220, 38, 38, 0.1);
  border: 1px solid var(--accent-primary);
  color: var(--accent-primary);
}

.status.error {
  background: rgba(220, 38, 38, 0.1);
  border: 1px solid var(--accent-primary);
  color: var(--accent-primary);
}

/* Footer */
.footer {
  text-align: center;
  margin-top: 30px;
  padding-top: 16px;
  border-top: 1px solid var(--border-color);
}

.footer p {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.footer strong {
  color: var(--text-primary);
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Responsive - Tablet */
@media (max-width: 968px) {
  .main-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
}

/* Responsive - Mobile */
@media (max-width: 768px) {
  .header h1 {
    font-size: 1.4rem;
  }

  .format-buttons {
    grid-template-columns: 1fr;
  }

  .video-meta {
    flex-direction: column;
    gap: 8px;
  }

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

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}