/* ==========================================================================
   Tap & Hold — Premium Light Design System CSS
   ========================================================================== */

/* 1. CSS Custom Properties / Light Theme Design Tokens */
:root {
  --bg-dark: #f8fafc;
  --bg-card: #ffffff;
  --bg-card-hover: #f1f5f9;
  --bg-panel: #ffffff;
  --bg-input: #f8fafc;
  
  --border-color: #e2e8f0;
  --border-color-hover: #cbd5e1;
  --border-accent: rgba(225, 29, 72, 0.3);
  
  /* Modern Crimson Rose Primary Color Palette */
  --primary: #e11d48;
  --primary-hover: #be123c;
  --primary-glow: rgba(225, 29, 72, 0.2);
  
  --accent-cyan: #059669;
  --accent-purple: #f59e0b;
  
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  
  --font-main: 'Plus Jakarta Sans', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
}

/* 2. Global Resets */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-family: var(--font-main);
  background-color: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.5;
}

body {
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

/* Background Ambient Glows */
.ambient-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(140px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.35;
}

.glow-1 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(225, 29, 72, 0.15) 0%, transparent 70%);
  top: -100px;
  left: 20%;
}

.glow-2 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(245, 158, 11, 0.15) 0%, transparent 70%);
  top: 400px;
  right: -100px;
}

/* Light Glassmorphism Card Utility */
.glass-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.04), 0 1px 3px rgba(0, 0, 0, 0.02);
}

/* Utility Layouts */
.hidden { display: none !important; }
.text-gradient {
  background: linear-gradient(135deg, #e11d48 0%, #f59e0b 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.mb-0 { margin-bottom: 0 !important; }
.mt-2 { margin-top: 8px !important; }
.mt-3 { margin-top: 12px !important; }
.text-left { text-align: left !important; }

/* 3. Site Header Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
}

.header-container {
  max-width: 1320px;
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 800;
  font-size: 1.25rem;
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--primary), #f59e0b);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: 0 4px 12px var(--primary-glow);
}

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

.nav-links {
  display: flex;
  gap: 28px;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.92rem;
  transition: var(--transition-fast);
}

.nav-links a:hover {
  color: var(--primary);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* Language Switcher */
.lang-switcher {
  position: relative;
}

.lang-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 8px 12px;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  transition: var(--transition-fast);
}

.lang-btn:hover {
  border-color: var(--border-color-hover);
  background: var(--bg-input);
}

.lang-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  width: 140px;
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
  display: none;
  flex-direction: column;
  padding: 6px;
  z-index: 110;
}

.lang-switcher.open .lang-dropdown {
  display: flex;
}

.lang-option {
  background: none;
  border: none;
  color: var(--text-secondary);
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  text-align: left;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition-fast);
}

.lang-option:hover {
  background: var(--bg-input);
  color: var(--primary);
}

/* 4. Hero Section */
.hero-section {
  padding: 60px 24px 30px;
  text-align: center;
  position: relative;
  z-index: 1;
}

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

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(225, 29, 72, 0.08);
  border: 1px solid rgba(225, 29, 72, 0.2);
  border-radius: 100px;
  color: #be123c;
  font-size: 0.875rem;
  font-weight: 700;
  margin-bottom: 24px;
}

.badge-icon {
  width: 16px;
  height: 16px;
  color: var(--primary);
}

.hero-title {
  font-size: 3.25rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
  color: #0f172a;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 720px;
  margin: 0 auto;
  line-height: 1.6;
}

/* 5. Studio Workspace Section */
.editor-section {
  padding: 20px 24px 40px;
  position: relative;
  z-index: 2;
}

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

.section-header {
  text-align: center;
  margin-bottom: 32px;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  margin-bottom: 8px;
  color: #0f172a;
}

.section-subtitle {
  color: var(--text-secondary);
  font-size: 1.05rem;
}

/* Studio Grid Layout */
.studio-grid {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 24px;
  align-items: stretch;
}

.panel {
  padding: 24px;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-color);
}

.panel-header h3 {
  font-size: 1.1rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
  color: #0f172a;
}

.panel-icon {
  width: 18px;
  height: 18px;
  color: var(--primary);
}

.control-group {
  margin-bottom: 20px;
}

.control-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.control-label-row {
  display: flex;
  align-items: center;
  margin-bottom: 8px;
}

/* Question Mark Tooltip System */
.tooltip-wrapper {
  position: relative;
  display: inline-flex;
  align-items: center;
  margin-left: 6px;
  cursor: pointer;
  outline: none;
}

.tooltip-icon {
  width: 16px;
  height: 16px;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.tooltip-wrapper:hover .tooltip-icon,
.tooltip-wrapper:focus .tooltip-icon,
.tooltip-wrapper.active .tooltip-icon {
  color: var(--primary);
}

.tooltip-card {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  width: 250px;
  padding: 10px 14px;
  background: #0f172a;
  color: #ffffff;
  font-size: 0.78rem;
  font-weight: 500;
  line-height: 1.45;
  border-radius: var(--radius-md);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s ease;
  z-index: 100;
  text-align: left;
}

.tooltip-card::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border-width: 5px;
  border-style: solid;
  border-color: #0f172a transparent transparent transparent;
}

.tooltip-wrapper:hover .tooltip-card,
.tooltip-wrapper:focus .tooltip-card,
.tooltip-wrapper.active .tooltip-card {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

/* Dropzone Upload */
.dropzone {
  border: 2px dashed #cbd5e1;
  border-radius: var(--radius-md);
  padding: 20px 16px;
  text-align: center;
  cursor: pointer;
  background: var(--bg-input);
  transition: var(--transition-normal);
}

.dropzone:hover, .dropzone.dragover {
  border-color: var(--primary);
  background: rgba(225, 29, 72, 0.04);
}

.upload-icon-circle {
  width: 44px;
  height: 44px;
  background: #ffffff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 10px;
  color: var(--primary);
  border: 1px solid var(--border-color);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.upload-text {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.upload-primary {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text-primary);
}

.upload-secondary {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.file-info {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-input);
  padding: 10px 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.file-name-text {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 180px;
}

/* Dropdown Aspect Ratio Select */
.select-wrapper {
  position: relative;
  width: 100%;
}

.custom-select {
  width: 100%;
  appearance: none;
  -webkit-appearance: none;
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  color: var(--text-primary);
  font-size: 0.9rem;
  font-weight: 700;
  font-family: var(--font-main);
  cursor: pointer;
  transition: var(--transition-fast);
}

.custom-select:hover, .custom-select:focus {
  border-color: var(--primary);
  outline: none;
  box-shadow: 0 0 0 3px var(--primary-glow);
}

.custom-select option {
  background-color: #ffffff;
  color: #0f172a;
  padding: 10px;
}

.select-arrow {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  color: var(--text-muted);
  pointer-events: none;
}

/* Brush Toggle & Action Buttons (2x2 Grid) */
.brush-mode-toggle {
  display: grid;
  grid-template-columns: 1fr 1fr;
  background: var(--bg-input);
  padding: 4px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  margin-bottom: 12px;
}

.btn-tab {
  background: none;
  border: none;
  color: var(--text-secondary);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: var(--transition-fast);
}

.btn-tab.active {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 2px 8px var(--primary-glow);
}

.sub-panel {
  background: var(--bg-input);
  padding: 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.slider-row {
  margin-bottom: 12px;
}

.slider-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.slider-val {
  color: var(--primary);
}

input[type="range"] {
  width: 100%;
  accent-color: var(--primary);
  cursor: pointer;
}

/* 2x2 Grid for Brush Tools */
.brush-tools-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  width: 100%;
}

.brush-tools-grid .btn {
  width: 100%;
  justify-content: center;
  padding: 8px 6px;
  font-size: 0.78rem;
}

/* Export Warning */
.export-warning {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 10px 12px;
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.3);
  border-radius: var(--radius-md);
  color: #d97706;
  font-size: 0.78rem;
  line-height: 1.4;
  font-weight: 600;
}

.warn-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  margin-top: 1px;
}

/* Canvas Header Stage Title */
.stage-title-box {
  display: flex;
  align-items: center;
  gap: 10px;
}

.title-icon {
  width: 20px;
  height: 20px;
  color: var(--primary);
}

.stage-title {
  font-size: 1.05rem;
  font-weight: 700;
}

.canvas-actions .btn-icon {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-fast);
}

.canvas-actions .btn-icon.active, .canvas-actions .btn-icon:hover {
  color: var(--primary);
  border-color: var(--primary);
}

/* Expanded Viewport Container & Large Canvas */
.viewport-container {
  flex: 1;
  min-height: 680px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #f1f5f9;
  border-radius: var(--radius-md);
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border-color);
  padding: 16px;
}

.paint-editor-stage {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.paint-canvas-container {
  position: relative;
  display: inline-block;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
  user-select: none;
}

.paint-canvas-container canvas {
  display: block;
  max-width: 100%;
  max-height: 720px;
  height: auto;
}

#editor-canvas-mask {
  position: absolute;
  top: 0;
  left: 0;
  pointer-events: auto;
  cursor: crosshair;
}

.brush-cursor {
  position: absolute;
  border: 2px solid var(--primary);
  border-radius: 50%;
  pointer-events: none;
  transform: translate(-50%, -50%);
  display: none;
  box-shadow: 0 0 10px var(--primary-glow);
  z-index: 10;
}

.canvas-placeholder {
  text-align: center;
  padding: 80px 20px;
}

.ph-circle {
  width: 72px;
  height: 72px;
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  color: var(--text-muted);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
}

.canvas-placeholder h4 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: #0f172a;
}

.canvas-placeholder p {
  color: var(--text-muted);
  font-size: 0.92rem;
  max-width: 360px;
}

/* 6. Dedicated Dual Preview Section */
.simulator-section {
  padding: 20px 24px 60px;
  position: relative;
  z-index: 2;
}

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

.previews-dual-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  align-items: stretch;
}

.preview-card {
  padding: 24px;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.card-header {
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
}

.card-header h3 {
  font-size: 1.15rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
  color: #0f172a;
}

.card-icon {
  width: 20px;
  height: 20px;
  color: var(--primary);
}

/* Preview Download Action Bar */
.preview-download-bar {
  margin-top: 32px;
  text-align: center;
  display: flex;
  justify-content: center;
}

.preview-download-bar .btn {
  min-width: 300px;
}

/* Flex Stage Containers to Fill Height */
.interactive-stage, .slider-stage {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
}

/* Twitter Live Card Simulation (X Light Post Styling) */
.simulated-x-card {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 16px;
  width: 100%;
  max-width: 520px;
  padding: 16px;
  cursor: pointer;
  user-select: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.04);
}

.simulated-x-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
}

.sim-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.sim-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, #e11d48, #f59e0b);
}

.sim-user-meta {
  display: flex;
  flex-direction: column;
}

.sim-name {
  font-weight: 700;
  font-size: 0.9rem;
  color: #0f172a;
}

.sim-handle {
  color: #64748b;
  font-size: 0.8rem;
}

.sim-badge-tap {
  margin-left: auto;
  font-size: 0.72rem;
  font-weight: 700;
  background: rgba(225, 29, 72, 0.1);
  color: #be123c;
  border: 1px solid rgba(225, 29, 72, 0.25);
  padding: 4px 10px;
  border-radius: 100px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.simulated-x-card.is-holding .sim-badge-tap {
  background: #10b981;
  color: #fff;
  border-color: #10b981;
}

.sim-image-box {
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid #e2e8f0;
  background: #fff;
}

.sim-image-box canvas {
  display: block;
  width: 100%;
  height: auto;
  max-height: 520px;
  object-fit: contain;
}

.sim-footer {
  display: flex;
  justify-content: space-between;
  color: #64748b;
  font-size: 0.8rem;
  margin-top: 12px;
  padding: 0 8px;
}

.sim-action {
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Split Slider Stage */
.comparison-container {
  position: relative;
  width: 100%;
  max-width: 520px;
  aspect-ratio: 1 / 1;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-color);
  user-select: none;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.04);
}

.comp-layer {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.comp-layer canvas {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.comp-before {
  background: #fff;
}

.comp-after {
  background: #000;
  clip-path: polygon(50% 0, 100% 0, 100% 100%, 50% 100%);
}

.comp-tag {
  position: absolute;
  top: 12px;
  padding: 4px 10px;
  font-size: 0.72rem;
  font-weight: 700;
  border-radius: 100px;
  z-index: 5;
}

.tag-left {
  left: 12px;
  background: rgba(15, 23, 42, 0.85);
  color: #fff;
}

.tag-right {
  right: 12px;
  background: rgba(255, 255, 255, 0.9);
  color: #000;
}

.slider-handle {
  position: absolute;
  top: 0;
  left: 50%;
  width: 4px;
  height: 100%;
  background: #fff;
  z-index: 10;
  cursor: ew-resize;
  transform: translateX(-50%);
}

.handle-line {
  width: 100%;
  height: 100%;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
}

.handle-button {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 36px;
  height: 36px;
  background: #fff;
  color: #000;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

/* 7. Educational What is Section */
.whatis-section {
  padding: 40px 24px 60px;
  position: relative;
  z-index: 2;
}

.whatis-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 40px;
}

.whatis-p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.7;
  margin-top: 16px;
}

/* 8. Showcase Section (X Post Cards with Media Images) */
.showcase-section {
  padding: 60px 24px;
  position: relative;
  z-index: 2;
}

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

.showcase-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.showcase-card {
  padding: 20px;
  text-decoration: none;
  color: var(--text-primary);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.showcase-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
}

.showcase-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.showcase-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, #f59e0b, #e11d48);
  flex-shrink: 0;
}

.avatar-2 {
  background: linear-gradient(135deg, #10b981, #0284c7);
}

.showcase-meta {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.showcase-author {
  font-weight: 700;
  font-size: 0.92rem;
  color: #0f172a;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.showcase-handle {
  color: var(--text-muted);
  font-size: 0.8rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.showcase-x-icon {
  margin-left: auto;
  width: 18px;
  height: 18px;
  color: #1da1f2;
  flex-shrink: 0;
}

.showcase-media-box {
  width: 100%;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  margin: 10px 0;
  background: #f1f5f9;
}

.showcase-media-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.3s ease;
}

.showcase-card:hover .showcase-media-img {
  transform: scale(1.04);
}

.showcase-text {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.5;
  margin-bottom: 14px;
  font-weight: 500;
}

.showcase-footer {
  display: flex;
  align-items: center;
  gap: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--border-color);
  font-size: 0.85rem;
  color: var(--text-muted);
}

.showcase-stat {
  display: flex;
  align-items: center;
  gap: 6px;
}

.btn-x-link {
  margin-left: auto;
  color: var(--primary);
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 4px;
}

/* Showcase View More Action Button */
.showcase-actions {
  margin-top: 40px;
  text-align: center;
  display: flex;
  justify-content: center;
}

.showcase-more-btn {
  padding: 14px 32px;
  font-size: 1rem;
  border-color: #cbd5e1;
  background: #ffffff;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.04);
}

.showcase-more-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--bg-input);
}

/* 9. Buttons System */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-main);
  font-weight: 700;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: var(--transition-fast);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-hover));
  color: #fff;
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px var(--primary-glow);
}

.btn-outline {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
}

.btn-outline:hover:not(:disabled) {
  border-color: var(--border-color-hover);
  background: var(--bg-input);
}

.btn-sm { padding: 8px 16px; font-size: 0.85rem; }
.btn-xs { padding: 6px 12px; font-size: 0.78rem; border-radius: var(--radius-sm); }
.btn-lg { padding: 14px 24px; font-size: 1rem; border-radius: var(--radius-md); }
.btn-block { width: 100%; }

.btn-glow {
  box-shadow: 0 4px 15px var(--primary-glow);
}

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

/* 10. Section Layouts & Components (Features, Guide, FAQ) */
.features-section, .guide-section, .faq-section {
  padding: 60px 24px;
  position: relative;
  z-index: 2;
}

.features-container, .guide-container, .faq-container {
  max-width: 1400px;
  margin: 0 auto;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.feature-card {
  padding: 30px;
}

.feature-icon {
  width: 48px;
  height: 48px;
  background: rgba(225, 29, 72, 0.08);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  margin-bottom: 20px;
}

.feature-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: #0f172a;
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.6;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.step-card {
  padding: 24px;
  position: relative;
}

.step-num {
  font-size: 2rem;
  font-weight: 800;
  color: rgba(225, 29, 72, 0.25);
  margin-bottom: 12px;
}

.step-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: #0f172a;
}

.step-card p {
  color: var(--text-secondary);
  font-size: 0.88rem;
  line-height: 1.5;
}

.faq-accordion {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: 20px 24px;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.05rem;
  font-weight: 700;
  text-align: left;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
}

.faq-icon {
  width: 20px;
  height: 20px;
  color: var(--text-muted);
  transition: transform var(--transition-normal);
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  padding: 0 24px;
}

.faq-item.open .faq-answer {
  max-height: 200px;
  padding: 0 24px 20px;
}

.faq-answer p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* 11. Footer */
.site-footer {
  border-top: 1px solid var(--border-color);
  padding: 40px 24px;
  background: #ffffff;
  position: relative;
  z-index: 2;
}

.footer-container {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  text-align: center;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-top: 8px;
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.875rem;
}

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

/* 12. Responsive Design Breakpoints */
@media (max-width: 1024px) {
  .studio-grid {
    grid-template-columns: 1fr;
  }
  .previews-dual-grid {
    grid-template-columns: 1fr;
  }
  .hero-title {
    font-size: 2.5rem;
  }
  .viewport-container {
    min-height: 520px;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  .hero-title {
    font-size: 2rem;
  }
  .viewport-container {
    min-height: 440px;
  }
}