/* ==========================================================================
   REDDIT VIDEO DOWNLOADER - MODERN PROFESSIONAL STYLESHEET
   Branding: Authentic Reddit Orange (#FF4500) Hero with Pure White Content
   ========================================================================== */

:root {
  --reddit-orange: #FF4500;
  --reddit-orange-dark: #D93A00;
  --reddit-orange-light: #FF5419;
  --pure-white: #FFFFFF;
  --bg-page: #FFFFFF;
  --bg-subtle: #F8F9FA;
  --text-dark: #0F1A1C;
  --text-muted: #576F76;
  --text-light: #878A8C;
  --border-color: #EDEFF1;
  --border-hover: #D3D6DA;
  --color-success: #0E8A00;
  --color-error: #EB001F;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
  --shadow-hero: 0 16px 36px rgba(217, 58, 0, 0.2);
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

html {
  font-family: var(--font-family);
  background-color: var(--bg-page);
  color: var(--text-dark);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ==================== HERO SECTION (#FF4500) ==================== */
.hero-section {
  background-color: var(--reddit-orange);
  background-image: radial-gradient(circle at 50% 0%, #FF5A1F 0%, var(--reddit-orange) 60%, var(--reddit-orange-dark) 100%);
  color: var(--pure-white);
  padding: 24px 20px 60px 20px;
  position: relative;
  overflow: hidden;
}

/* Header: Reddit Official Logo Only */
.official-header {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px 0 24px 0;
}

.logo-wrapper {
  background: var(--pure-white);
  padding: 8px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.15);
  transition: transform var(--transition-fast);
}

.logo-wrapper:hover {
  transform: scale(1.05);
}

.official-reddit-logo {
  display: block;
  width: 44px;
  height: 44px;
}

/* Hero Content */
.hero-content {
  max-width: 780px;
  margin: 0 auto;
  text-align: center;
}

.main-heading {
  font-size: 2.75rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 14px;
  color: var(--pure-white);
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
}

.hero-subtitle {
  font-size: 1.125rem;
  font-weight: 400;
  opacity: 0.94;
  max-width: 600px;
  margin: 0 auto 36px auto;
  line-height: 1.6;
}

/* URL Input Card */
.input-card {
  background: var(--pure-white);
  padding: 10px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-hero);
  text-align: left;
}

.url-form {
  width: 100%;
}

.input-group {
  display: flex;
  align-items: center;
  position: relative;
  background: #FFFFFF;
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  transition: border-color var(--transition-fast);
}

.input-group:focus-within {
  border-color: var(--reddit-orange);
}

.input-icon {
  padding-left: 16px;
  padding-right: 8px;
  display: flex;
  align-items: center;
  color: var(--text-light);
}

.url-input {
  flex: 1;
  border: none;
  outline: none;
  font-size: 1.05rem;
  font-family: inherit;
  color: var(--text-dark);
  padding: 14px 10px;
  background: transparent;
  width: 100%;
}

.url-input::placeholder {
  color: #8C8C8C;
}

.btn-tool {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: var(--bg-subtle);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 7px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  margin-right: 8px;
  transition: all var(--transition-fast);
}

.btn-tool:hover {
  background: #EAECEF;
  color: var(--text-dark);
}

/* Prominent Download Button */
.btn-download {
  background: var(--text-dark);
  color: var(--pure-white);
  border: none;
  font-size: 1.05rem;
  font-weight: 700;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn-download:hover {
  background: #272729;
  transform: translateY(-1px);
}

.btn-download:active {
  transform: translateY(0);
}

.input-helper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px 4px 14px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.input-helper code {
  background: var(--bg-subtle);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: monospace;
  color: var(--text-dark);
  font-weight: 600;
}

.sample-btn {
  background: none;
  border: none;
  color: var(--reddit-orange-dark);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: underline;
  transition: color var(--transition-fast);
}

.sample-btn:hover {
  color: var(--reddit-orange);
}

/* ==================== CONTENT SECTION (Pure White) ==================== */
.content-section {
  background-color: var(--pure-white);
  flex: 1;
  padding: 40px 20px 60px 20px;
}

.content-container {
  max-width: 900px;
  margin: 0 auto;
}

/* Loading State */
.state-container {
  text-align: center;
  padding: 50px 20px;
}

.spinner {
  width: 48px;
  height: 48px;
  border: 4px solid var(--border-color);
  border-top-color: var(--reddit-orange);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto 20px auto;
}

.state-title {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 6px;
}

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

/* Error State */
.state-card {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 22px 24px;
  border-radius: var(--radius-md);
  margin-bottom: 30px;
  animation: fadeIn 0.3s ease;
}

.error-card {
  background-color: #FFF5F5;
  border: 1px solid #FED7D7;
}

.error-icon {
  color: var(--color-error);
  flex-shrink: 0;
  margin-top: 2px;
}

.card-heading {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 4px;
}

.card-text {
  font-size: 0.95rem;
  color: #4A5568;
  line-height: 1.5;
}

.external-box {
  margin-top: 14px;
}

/* Results Section */
.results-container {
  margin-bottom: 40px;
  animation: fadeInUp 0.35s ease;
}

.result-card {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  background: var(--pure-white);
}

.media-preview-wrapper {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 24px;
  padding: 24px;
  background: var(--bg-subtle);
  border-bottom: 1px solid var(--border-color);
}

.video-container {
  width: 100%;
  background: #000;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 16 / 9;
}

.video-preview-element {
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #000;
}

.media-meta {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.meta-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.78rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--radius-full);
}

.subreddit-badge {
  background: #EDEFF1;
  color: var(--text-dark);
}

.author-badge {
  background: #E2E7E9;
  color: var(--text-muted);
}

.audio-badge {
  background: #E6F6EC;
  color: var(--color-success);
}

.audio-badge.silent {
  background: #F7F9FA;
  color: var(--text-light);
}

.video-title {
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1.35;
  color: var(--text-dark);
  margin-bottom: 20px;
}

.fast-action-wrapper {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.btn-fast-download {
  background: var(--reddit-orange);
  color: var(--pure-white);
  border: none;
  font-size: 1rem;
  font-weight: 700;
  padding: 12px 22px;
  border-radius: var(--radius-md);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all var(--transition-fast);
}

.btn-fast-download:hover {
  background: var(--reddit-orange-dark);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--pure-white);
  color: var(--text-dark);
  border: 1px solid var(--border-color);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 12px 18px;
  border-radius: var(--radius-md);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  text-decoration: none;
  transition: all var(--transition-fast);
}

.btn-secondary:hover {
  background: var(--bg-subtle);
  border-color: var(--border-hover);
}

/* Download Table */
.download-table-section {
  padding: 24px;
}

.section-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-dark);
}

.table-responsive {
  width: 100%;
  overflow-x: auto;
}

.download-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.download-table th {
  padding: 12px 16px;
  background: var(--bg-subtle);
  color: var(--text-muted);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--border-color);
}

.download-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border-color);
  font-size: 0.95rem;
  color: var(--text-dark);
}

.download-table tr:last-child td {
  border-bottom: none;
}

.download-table tr:hover td {
  background-color: #FAFAFB;
}

.quality-badge {
  display: inline-block;
  font-weight: 700;
  color: var(--text-dark);
}

.quality-badge.rec {
  color: var(--reddit-orange-dark);
}

.tag-rec {
  font-size: 0.7rem;
  background: #FFF0EB;
  color: var(--reddit-orange-dark);
  padding: 2px 6px;
  border-radius: 4px;
  margin-left: 6px;
  font-weight: 700;
}

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

.btn-row-download {
  background: var(--pure-white);
  border: 1px solid var(--border-color);
  color: var(--text-dark);
  font-size: 0.85rem;
  font-weight: 700;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all var(--transition-fast);
}

.btn-row-download:hover {
  background: var(--reddit-orange);
  color: var(--pure-white);
  border-color: var(--reddit-orange);
}

.btn-row-download.btn-row-rec {
  background: var(--reddit-orange);
  color: var(--pure-white);
  border-color: var(--reddit-orange);
}

.btn-row-download.btn-row-rec:hover {
  background: var(--reddit-orange-dark);
}

/* Toast / Processing Banner */
.processing-banner {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--text-dark);
  color: var(--pure-white);
  padding: 16px 20px;
  border-radius: var(--radius-md);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
  z-index: 1000;
  max-width: 400px;
  animation: slideInUp 0.3s ease;
}

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

.mini-spinner {
  width: 24px;
  height: 24px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-top-color: var(--reddit-orange);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  flex-shrink: 0;
}

.processing-banner strong {
  display: block;
  font-size: 0.95rem;
  margin-bottom: 2px;
}

.processing-banner p {
  font-size: 0.82rem;
  opacity: 0.85;
  line-height: 1.4;
}

/* Info Section */
.info-section {
  margin-top: 50px;
  padding-top: 40px;
  border-top: 1px solid var(--border-color);
}

.info-heading {
  font-size: 1.4rem;
  font-weight: 800;
  text-align: center;
  margin-bottom: 32px;
  color: var(--text-dark);
}

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

.info-card {
  background: var(--bg-subtle);
  border: 1px solid var(--border-color);
  padding: 24px;
  border-radius: var(--radius-md);
}

.info-icon {
  width: 44px;
  height: 44px;
  background: var(--pure-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--reddit-orange);
  margin-bottom: 16px;
}

.info-card h4 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-dark);
}

.info-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.55;
}

/* Footer */
.app-footer {
  text-align: center;
  padding: 24px 20px;
  border-top: 1px solid var(--border-color);
  font-size: 0.85rem;
  color: var(--text-light);
  background: var(--bg-page);
}

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

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hidden {
  display: none !important;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .hero-section {
    padding: 20px 16px 40px 16px;
  }

  .main-heading {
    font-size: 2rem;
  }

  .hero-subtitle {
    font-size: 1rem;
    margin-bottom: 24px;
  }

  .input-group {
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
  }

  .input-icon {
    display: none;
  }

  .url-input {
    padding: 12px 14px;
  }

  .btn-download {
    width: 100%;
    justify-content: center;
    padding: 14px;
  }

  .btn-tool {
    position: absolute;
    right: 8px;
    top: 8px;
    margin-right: 0;
  }

  .input-helper {
    flex-direction: column;
    gap: 6px;
    align-items: flex-start;
  }

  .media-preview-wrapper {
    grid-template-columns: 1fr;
  }

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