/* Phase 3: Differentiated Tool UI - Converter Card Variations
 * Each page gets a unique converter design to maximize visual distinction
 */

/* ============================================================================
   VARIATION A: Minimal Flat Design (Default)
   Used by: youtube-to-mp4, youtube-audio-downloader
   ============================================================================ */
.converter-variation-a {
  border-radius: 8px;
  border: 1px solid var(--border);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  background: var(--card-bg);
}

.converter-variation-a .convert-btn {
  border-radius: 6px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.converter-variation-a .quality-option,
.converter-variation-a .tab {
  border-radius: 4px;
  border: 1px solid var(--border);
}

/* ============================================================================
   VARIATION B: Bold Gradient Cards (High-Volume Pages)
   Used by: youtube-to-mp3, youtube-mp3, yt-to-mp3
   ============================================================================ */
.converter-variation-b {
  border-radius: 16px;
  border: 2px solid transparent;
  background: var(--card-bg);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  position: relative;
  overflow: hidden;
}

.converter-variation-b::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--theme-gradient, linear-gradient(90deg, #4f46e5, #06b6d4));
}

.converter-variation-b .convert-btn {
  border-radius: 12px;
  font-weight: 600;
  padding: 16px 32px;
  font-size: 18px;
  box-shadow: 0 4px 12px var(--theme-shadow, rgba(0, 0, 0, 0.15));
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.converter-variation-b .convert-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--theme-shadow, rgba(0, 0, 0, 0.2));
}

.converter-variation-b .tab {
  border-radius: 8px;
  border: 2px solid var(--border);
  transition: all 0.2s ease;
}

.converter-variation-b .tab:hover {
  border-color: var(--theme-primary, #4f46e5);
  transform: scale(1.02);
}

.converter-variation-b .tab.active {
  border-color: var(--theme-primary, #4f46e5);
  background: linear-gradient(135deg, var(--theme-primary), var(--theme-accent));
  color: white;
  box-shadow: 0 4px 12px var(--theme-shadow, rgba(0, 0, 0, 0.2));
}

.converter-variation-b .input {
  border-radius: 10px;
  border: 2px solid var(--border);
  padding: 14px 16px;
  font-size: 16px;
}

.converter-variation-b .input:focus {
  border-color: var(--theme-primary, #4f46e5);
  box-shadow: 0 0 0 3px var(--theme-shadow, rgba(79, 70, 229, 0.1));
}

/* ============================================================================
   VARIATION C: Professional Sharp Edges (Download-focused pages)
   Used by: youtube-video-download-mp3, ytmp3-download, y2mate-download
   ============================================================================ */
.converter-variation-c {
  border-radius: 4px;
  border-left: 4px solid var(--theme-primary, #dc2626);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  background: var(--card-bg);
}

.converter-variation-c .convert-btn {
  border-radius: 4px;
  font-weight: 600;
  text-transform: none;
  padding: 14px 28px;
  border: 2px solid transparent;
  position: relative;
  overflow: hidden;
}

.converter-variation-c .convert-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s;
}

.converter-variation-c .convert-btn:hover::before {
  left: 100%;
}

.converter-variation-c .tab {
  border-radius: 2px;
  border: 2px solid var(--border);
  font-weight: 500;
}

.converter-variation-c .tab.active {
  border-color: var(--theme-primary, #dc2626);
  background: var(--theme-primary, #dc2626);
  color: white;
}

.converter-variation-c .input {
  border-radius: 4px;
  border: 2px solid var(--border);
  border-left-width: 4px;
  border-left-color: var(--theme-primary, #dc2626);
}

/* ============================================================================
   VARIATION D: Soft Rounded (User-friendly pages)
   Used by: iphone-converter, android-converter, how-to-install
   ============================================================================ */
.converter-variation-d {
  border-radius: 24px;
  border: none;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
  background: linear-gradient(to bottom, var(--card-bg) 0%, var(--surface) 100%);
  padding: 32px;
}

.converter-variation-d .convert-btn {
  border-radius: 24px;
  font-weight: 600;
  padding: 16px 36px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.converter-variation-d .tab {
  border-radius: 16px;
  border: 2px solid var(--border);
  padding: 10px 16px;
}

.converter-variation-d .tab.active {
  background: var(--theme-gradient, linear-gradient(135deg, #4f46e5, #06b6d4));
  border-color: transparent;
  color: white;
}

.converter-variation-d .input {
  border-radius: 16px;
  border: 2px solid var(--border);
  padding: 14px 18px;
  background: rgba(255, 255, 255, 0.5);
}

.converter-variation-d .input:focus {
  background: white;
  border-color: var(--theme-primary, #4f46e5);
}

/* ============================================================================
   VARIATION E: Modern Neumorphic (Music/converter focused)
   Used by: youtube-music-converter, convert-youtube-to-mp3
   ============================================================================ */
.converter-variation-e {
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: var(--card-bg);
  box-shadow: 
    8px 8px 16px rgba(0, 0, 0, 0.1),
    -8px -8px 16px rgba(255, 255, 255, 0.05);
}

.converter-variation-e .convert-btn {
  border-radius: 16px;
  font-weight: 600;
  padding: 15px 32px;
  box-shadow: 
    4px 4px 8px rgba(0, 0, 0, 0.15),
    -2px -2px 6px rgba(255, 255, 255, 0.05);
  transition: all 0.3s ease;
}

.converter-variation-e .convert-btn:active {
  box-shadow: 
    inset 4px 4px 8px rgba(0, 0, 0, 0.2),
    inset -2px -2px 6px rgba(255, 255, 255, 0.05);
}

.converter-variation-e .tab {
  border-radius: 12px;
  border: none;
  background: var(--surface);
  box-shadow: 
    inset 2px 2px 4px rgba(0, 0, 0, 0.1),
    inset -2px -2px 4px rgba(255, 255, 255, 0.05);
}

.converter-variation-e .tab.active {
  background: var(--theme-gradient, linear-gradient(135deg, #4f46e5, #06b6d4));
  box-shadow: 
    4px 4px 8px rgba(0, 0, 0, 0.15),
    -2px -2px 6px rgba(255, 255, 255, 0.05);
  color: white;
}

.converter-variation-e .input {
  border-radius: 14px;
  border: none;
  background: var(--surface);
  padding: 14px 16px;
  box-shadow: 
    inset 3px 3px 6px rgba(0, 0, 0, 0.1),
    inset -2px -2px 4px rgba(255, 255, 255, 0.05);
}

/* ============================================================================
   Responsive Adjustments
   ============================================================================ */
@media (max-width: 768px) {
  .converter-variation-b .convert-btn,
  .converter-variation-d .convert-btn,
  .converter-variation-e .convert-btn {
    padding: 14px 24px;
    font-size: 16px;
  }
  
  .converter-variation-d {
    padding: 24px 20px;
    border-radius: 20px;
  }
  
  .converter-variation-e {
    box-shadow: 
      4px 4px 8px rgba(0, 0, 0, 0.1),
      -4px -4px 8px rgba(255, 255, 255, 0.05);
  }
}

/* ============================================================================
   Select Dropdown Variations
   ============================================================================ */
.converter-variation-b .select {
  border-radius: 10px;
  border: 2px solid var(--border);
  font-weight: 500;
}

.converter-variation-b .select:focus {
  border-color: var(--theme-primary, #4f46e5);
}

.converter-variation-c .select {
  border-radius: 4px;
  border-left-width: 3px;
  border-left-color: var(--theme-primary, #dc2626);
}

.converter-variation-d .select {
  border-radius: 14px;
  padding: 12px 40px 12px 16px;
}

.converter-variation-e .select {
  border-radius: 12px;
  border: none;
  box-shadow: 
    inset 2px 2px 4px rgba(0, 0, 0, 0.1),
    inset -2px -2px 4px rgba(255, 255, 255, 0.05);
}