/* style.css — Dark Mode Design System for Aerochrome Emulator */

:root {
  --bg-primary: #121212;
  --bg-secondary: #1a1a1a;
  --bg-card: #222224;
  --bg-input: #2c2c2e;
  --bg-input-hover: #38383a;
  
  --border-color: #333336;
  --border-focus: #ff2a6d;
  
  --text-primary: #f2f2f7;
  --text-secondary: #a1a1a6;
  --text-muted: #636366;
  
  --accent-ir: #ff2a6d;
  --accent-ir-hover: #ff4785;
  --accent-720: #05d9e8;
  --accent-mono: #d1d1d6;
  --accent-glow: rgba(255, 42, 109, 0.25);

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "SF Mono", Monaco, "Cascadia Code", "Courier New", monospace;
  
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
}

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

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

/* Header */
.app-header {
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.brand-container {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-icon {
  width: 28px;
  height: 28px;
  background: linear-gradient(135deg, var(--accent-ir), var(--accent-720));
  border-radius: 50%;
  box-shadow: 0 0 12px var(--accent-glow);
}

.app-title {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.app-badge {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background: rgba(255, 42, 109, 0.15);
  color: var(--accent-ir);
  padding: 0.2rem 0.5rem;
  border-radius: 999px;
  font-weight: 600;
  border: 1px solid rgba(255, 42, 109, 0.3);
}

/* Header Status Indicator: High-Contrast Green / Pulsing Red */
.status-pill {
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 0.45rem 1.15rem;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: all 0.25s ease;
  user-select: none;
}

.status-pill.status-ready {
  background-color: #238636;
  color: #ffffff;
  border: 1px solid #2ea043;
  box-shadow: 0 0 12px rgba(35, 134, 54, 0.45);
}

.status-pill.status-processing {
  background-color: #e60039;
  color: #ffffff;
  border: 1px solid #ff4785;
  box-shadow: 0 0 16px rgba(230, 0, 57, 0.75);
  animation: pulse-processing 0.7s infinite alternate ease-in-out;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #ffffff;
  box-shadow: 0 0 6px #ffffff;
}

@keyframes pulse-processing {
  0% {
    background-color: #e60039;
    box-shadow: 0 0 8px rgba(230, 0, 57, 0.5);
    transform: scale(0.98);
  }
  100% {
    background-color: #ff2a6d;
    box-shadow: 0 0 20px rgba(255, 42, 109, 0.9);
    transform: scale(1.02);
  }
}

/* App Layout Grid */
.app-main {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 1.5rem;
  padding: 1.5rem;
  max-width: 1600px;
  margin: 0 auto;
  width: 100%;
}

@media (max-width: 1024px) {
  .app-main {
    grid-template-columns: 1fr;
  }
}

/* Viewport Section */
.viewport-section {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  width: 100%;
}

/* Viewport Toolbar (Above Preview Image) */
.viewport-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.65rem 1rem;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.toolbar-left-group {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.toolbar-right-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-toolbar {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.btn-toolbar:hover {
  background: #3a2228;
  border-color: var(--accent-ir);
  color: #ff6b8b;
}

/* Canvas Card — Top-Aligned & Collapsible to Image Height */
.canvas-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  position: relative;
  overflow: hidden;
  width: 100%;
  min-height: 0;
  height: auto;
}

/* Drop Zone / Empty State */
.dropzone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-md);
  padding: 4rem 2rem;
  min-height: 380px;
  width: 100%;
  max-width: 540px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition-normal);
  background: rgba(255, 255, 255, 0.02);
}

.dropzone:hover, .dropzone.dragover {
  border-color: var(--accent-ir);
  background: rgba(255, 42, 109, 0.05);
  box-shadow: 0 0 20px var(--accent-glow);
}

.dropzone-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  color: var(--accent-ir);
}

.dropzone-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.dropzone-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
}

.file-input {
  display: none;
}

.btn-sample {
  font-size: 0.8rem;
  color: var(--text-secondary);
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition-fast);
}

.btn-sample:hover {
  background: var(--bg-input-hover);
  color: var(--text-primary);
}

/* Interactive Split Canvas Viewport — Top-Aligned, Auto Height & Portrait Fit */
.split-viewer-container {
  display: none;
  position: relative;
  width: 100%;
  height: auto;
  min-height: 0;
  align-items: flex-start;
  justify-content: center;
  user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  overflow: hidden;
  border-radius: var(--radius-md);
  background: #0a0a0a;
}

.split-viewer-wrapper {
  position: relative;
  display: inline-flex;
  align-items: flex-start;
  justify-content: center;
  max-width: 100%;
  max-height: min(75vh, 850px);
  width: auto;
  height: auto;
  line-height: 0;
  user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  --split-pos: 50%;
}

.split-viewer-wrapper.loupe-active {
  cursor: crosshair;
}

.split-viewer-wrapper:not(.loupe-active) {
  cursor: default;
}

.canvas-layer {
  display: block;
  max-width: 100%;
  max-height: min(75vh, 850px);
  width: auto;
  height: auto;
  object-fit: contain;
  user-select: none;
  -webkit-user-select: none;
  -webkit-user-drag: none;
}

.canvas-before-layer {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  clip-path: inset(0 calc(100% - var(--split-pos, 50%)) 0 0);
  pointer-events: none;
}

/* Split Divider Line & Handle */
.split-divider-line {
  position: absolute;
  top: 0;
  bottom: 0;
  left: var(--split-pos, 50%);
  width: 2px;
  background: var(--accent-ir);
  box-shadow: 0 0 10px rgba(255, 42, 109, 0.7);
  pointer-events: none;
  z-index: 8;
}

.split-handle {
  position: absolute;
  top: 50%;
  left: var(--split-pos, 50%);
  transform: translate(-50%, -50%);
  width: 36px;
  height: 36px;
  background: var(--bg-primary);
  border: 2px solid var(--accent-ir);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: ew-resize;
  box-shadow: 0 0 14px var(--accent-glow);
  z-index: 10;
  pointer-events: all;
}

.split-handle::before, .split-handle::after {
  content: '';
  display: block;
  width: 0;
  height: 0;
  border-top: 4px solid transparent;
  border-bottom: 4px solid transparent;
}

.split-handle::before {
  border-right: 5px solid var(--accent-ir);
  margin-right: 3px;
}

.split-handle::after {
  border-left: 5px solid var(--accent-ir);
  margin-left: 3px;
}

.split-label {
  position: absolute;
  bottom: 12px;
  padding: 0.25rem 0.6rem;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-primary);
  z-index: 9;
  pointer-events: none;
  border: 1px solid rgba(255, 255, 255, 0.1);
  line-height: 1.4;
}

.split-label-before {
  left: 12px;
}

.split-label-after {
  right: 12px;
}

/* Split Disabled State (Treatments Only) */
.split-viewer-wrapper.split-disabled .canvas-before-layer,
.split-viewer-wrapper.split-disabled .split-divider-line,
.split-viewer-wrapper.split-disabled .split-handle,
.split-viewer-wrapper.split-disabled .split-label {
  display: none !important;
}

/* 100% Loupe Click Hint */
.inspect-hint {
  position: absolute;
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(18, 18, 18, 0.85);
  backdrop-filter: blur(6px);
  color: var(--text-secondary);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  border: 1px solid var(--border-color);
  pointer-events: none;
  z-index: 9;
  opacity: 0.85;
  transition: opacity 0.2s ease;
  line-height: 1.4;
}

.split-viewer-wrapper:hover .inspect-hint {
  opacity: 1;
  color: var(--text-primary);
  border-color: var(--accent-ir);
}

/* Tactile Switch Toggle */
.toggle-control {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  cursor: pointer;
  user-select: none;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-primary);
}

.toggle-control input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-track {
  width: 36px;
  height: 18px;
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 999px;
  position: relative;
  transition: var(--transition-fast);
}

.toggle-track::before {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 12px;
  height: 12px;
  background-color: var(--text-secondary);
  border-radius: 50%;
  transition: var(--transition-fast);
}

.toggle-control input:checked + .toggle-track {
  background-color: rgba(255, 42, 109, 0.25);
  border-color: var(--accent-ir);
}

.toggle-control input:checked + .toggle-track::before {
  transform: translateX(18px);
  background-color: var(--accent-ir);
  box-shadow: 0 0 6px var(--accent-glow);
}

/* Control Panel Sidebar */
.control-sidebar {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  width: 100%;
  min-width: 320px;
}

.panel-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.panel-section-title {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Preset Buttons Grid */
.preset-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.6rem;
}

.btn-preset {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.65rem 0.5rem;
  border-radius: var(--radius-md);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
}

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

.btn-preset.active {
  background: rgba(255, 42, 109, 0.15);
  border-color: var(--accent-ir);
  color: var(--accent-ir);
  box-shadow: 0 0 10px var(--accent-glow);
}

/* Sliders & Parameter Controls */
.control-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.control-label-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  color: var(--text-primary);
}

.control-val {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-ir);
  background: var(--bg-input);
  padding: 0.1rem 0.4rem;
  border-radius: var(--radius-sm);
}

/* Range Slider Styling */
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  background: var(--bg-input);
  border-radius: 3px;
  outline: none;
  transition: var(--transition-fast);
}

input[type="range"]:focus-visible {
  box-shadow: 0 0 0 2px var(--accent-ir);
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--text-primary);
  cursor: pointer;
  border: 2px solid var(--accent-ir);
  box-shadow: 0 0 6px rgba(0, 0, 0, 0.5);
  transition: transform 0.1s ease, background 0.1s ease;
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.2);
  background: var(--accent-ir);
}

input[type="range"]::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--text-primary);
  cursor: pointer;
  border: 2px solid var(--accent-ir);
  box-shadow: 0 0 6px rgba(0, 0, 0, 0.5);
  transition: transform 0.1s ease, background 0.1s ease;
}

/* Bottom Sidebar Actions Card */
.action-panel-card {
  padding: 1.25rem;
}

.sidebar-action-buttons {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.btn-full {
  width: 100%;
  text-align: center;
}

/* Action Buttons */
.btn-primary {
  background: linear-gradient(135deg, var(--accent-ir), #d61c55);
  color: white;
  border: none;
  padding: 0.85rem 1.25rem;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  box-shadow: 0 4px 14px var(--accent-glow);
}

.btn-primary:hover:not(:disabled) {
  background: linear-gradient(135deg, var(--accent-ir-hover), #e62862);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px var(--accent-glow);
}

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.btn-secondary {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.65rem 1rem;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
}

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

/* 100% Detail Loupe Modal / Popup */
.modal-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(8px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.modal-backdrop.open {
  display: flex;
}

.modal-card {
  background: var(--bg-secondary);
  border: 1px solid var(--accent-ir);
  border-radius: var(--radius-lg);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.8), 0 0 20px var(--accent-glow);
  width: 100%;
  max-width: 540px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  animation: modal-enter 0.2s ease-out;
}

@keyframes modal-enter {
  from { opacity: 0; transform: scale(0.95) translateY(10px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-color);
  background: #151515;
}

.modal-title-group {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.modal-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.modal-subtitle {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-secondary);
}

.btn-close-modal {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 0.9rem;
  transition: var(--transition-fast);
}

.btn-close-modal:hover {
  background: var(--bg-input-hover);
  color: var(--text-primary);
  border-color: var(--accent-ir);
}

.modal-body {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.loupe-view-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  gap: 1rem;
}

.loupe-viewport {
  position: relative;
  width: 400px;
  height: 400px;
  max-width: 100%;
  max-height: 400px;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: #000000;
  box-shadow: inset 0 0 20px rgba(0, 0, 0, 0.8);
}

.loupe-canvas {
  width: 100%;
  height: 100%;
  display: block;
  image-rendering: pixelated;
}

.loupe-crosshair {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 20px;
  height: 20px;
  pointer-events: none;
}

.loupe-crosshair::before, .loupe-crosshair::after {
  content: '';
  position: absolute;
  background: rgba(255, 42, 109, 0.8);
  box-shadow: 0 0 4px #000;
}

.loupe-crosshair::before {
  top: 9px;
  left: 0;
  width: 20px;
  height: 2px;
}

.loupe-crosshair::after {
  top: 0;
  left: 9px;
  width: 2px;
  height: 20px;
}

.loupe-controls-bar {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  width: 100%;
}

.loupe-mode-toggles {
  display: flex;
  gap: 0.5rem;
}

.btn-loupe-mode {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
}

.btn-loupe-mode:hover {
  background: var(--bg-input-hover);
  color: var(--text-primary);
}

.btn-loupe-mode.active {
  background: rgba(255, 42, 109, 0.2);
  border-color: var(--accent-ir);
  color: var(--accent-ir);
}

.loupe-instruction {
  font-size: 0.72rem;
  color: var(--text-muted);
  text-align: center;
}

/* AdSense Reserved Container Slots & Guaranteed Geometry */
.ad-slot-sidebar {
  width: 100%;
  min-width: 300px;
  min-height: 250px;
  box-sizing: border-box;
  background: var(--bg-secondary);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-lg);
  display: block;
  text-align: center;
  padding: 0.75rem;
  overflow: hidden;
}

.ad-slot-footer {
  width: calc(100% - 3rem);
  max-width: 1200px;
  min-height: 90px;
  box-sizing: border-box;
  background: var(--bg-secondary);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-md);
  margin: 1.5rem auto;
  display: block;
  text-align: center;
  padding: 0.5rem;
  overflow: hidden;
}

/* Ensure empty ins tags have explicit block display and non-zero dimensions */
.adsbygoogle {
  display: block !important;
  width: 100% !important;
  box-sizing: border-box;
  margin: 0 auto;
}

.ad-slot-sidebar .adsbygoogle {
  min-width: 250px;
  min-height: 250px;
  max-width: 100%;
}

.ad-slot-footer .adsbygoogle {
  min-width: 280px;
  min-height: 90px;
  max-width: 100%;
}

/* Footer */
.app-footer {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 1.25rem 1.5rem;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-secondary);
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.app-footer a {
  color: var(--accent-ir);
  text-decoration: none;
}

.app-footer a:hover {
  text-decoration: underline;
}

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

/* ==========================================================================
   Landing Page (index.html) Styles
   ========================================================================== */

.brand-link {
  text-decoration: none;
  color: inherit;
}

.header-right-nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.nav-link-home {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  transition: var(--transition-fast);
}

.nav-link-home:hover {
  color: var(--accent-ir);
}

.btn-header-cta {
  background: linear-gradient(135deg, var(--accent-ir), #e01b5d);
  color: #ffffff;
  padding: 0.45rem 1rem;
  border-radius: var(--radius-md);
  font-size: 0.82rem;
  font-weight: 700;
  text-decoration: none;
  transition: var(--transition-fast);
  box-shadow: 0 0 10px var(--accent-glow);
}

.btn-header-cta:hover {
  filter: brightness(1.15);
  box-shadow: 0 0 16px rgba(255, 42, 109, 0.4);
}

.landing-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
}

.landing-container {
  width: 100%;
  max-width: 1100px;
  padding: 2.5rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 3.5rem;
}

/* Hero Section */
.hero-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 1.5rem;
}

.hero-title {
  font-size: clamp(2rem, 4.5vw, 3.25rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  max-width: 860px;
  background: linear-gradient(135deg, #ffffff 40%, var(--accent-ir) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.2rem);
  line-height: 1.6;
  color: var(--text-secondary);
  max-width: 780px;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 0.5rem;
}

.btn-hero-cta {
  background: linear-gradient(135deg, var(--accent-ir), #ff548f);
  color: #ffffff;
  font-size: 1.05rem;
  font-weight: 700;
  padding: 0.9rem 2.2rem;
  border-radius: var(--radius-lg);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: 0 4px 20px rgba(255, 42, 109, 0.4);
  transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease;
}

.btn-hero-cta:hover {
  transform: translateY(-2px);
  filter: brightness(1.1);
  box-shadow: 0 8px 28px rgba(255, 42, 109, 0.6);
}

.hero-demo-card {
  width: 100%;
  max-width: 900px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 0.75rem;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.6);
  margin-top: 1rem;
  user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
}

.hero-split-wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 10 / 6;
  background: #000;
  border-radius: var(--radius-md);
  overflow: hidden;
  --split-pos: 50%;
  user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  touch-action: none;
}

.hero-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  user-select: none;
  -webkit-user-select: none;
  -webkit-user-drag: none;
}

.hero-canvas-before-layer {
  z-index: 2;
  clip-path: inset(0 calc(100% - var(--split-pos)) 0 0);
}

.hero-split-divider {
  position: absolute;
  top: 0;
  bottom: 0;
  left: var(--split-pos);
  width: 2px;
  background-color: var(--accent-ir);
  z-index: 3;
  pointer-events: none;
  box-shadow: 0 0 10px var(--accent-glow);
}

.hero-split-handle {
  position: absolute;
  top: 50%;
  left: var(--split-pos);
  transform: translate(-50%, -50%);
  width: 42px;
  height: 42px;
  background: var(--bg-secondary);
  border: 2px solid var(--accent-ir);
  border-radius: 50%;
  z-index: 4;
  cursor: ew-resize;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.6), 0 0 12px var(--accent-glow);
  touch-action: none;
}

.hero-split-handle::after {
  content: '⟷';
  font-size: 1.1rem;
  color: var(--accent-ir);
  font-weight: bold;
}

.hero-split-label {
  position: absolute;
  bottom: 12px;
  padding: 0.3rem 0.65rem;
  border-radius: var(--radius-sm);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  z-index: 5;
  pointer-events: none;
  background: rgba(18, 18, 18, 0.75);
  backdrop-filter: blur(4px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.hero-label-before {
  left: 12px;
  color: #a1a1a6;
}

.hero-label-after {
  right: 12px;
  color: var(--accent-ir);
  border-color: rgba(255, 42, 109, 0.3);
}

/* Content Sections */
.content-section {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.section-header {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.section-title {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.section-desc-lead {
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--text-secondary);
}

/* Feature Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.25rem;
}

.feature-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.feature-card:hover {
  transform: translateY(-2px);
  border-color: rgba(255, 42, 109, 0.4);
}

.feature-card-header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.feature-card-icon {
  font-size: 1.4rem;
}

.feature-card-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
}

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

/* Privacy Callout */
.privacy-card {
  background: linear-gradient(135deg, #182218 0%, var(--bg-secondary) 100%);
  border: 1px solid #2e5a2e;
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
}

.privacy-icon {
  font-size: 2rem;
  line-height: 1;
}

.privacy-content {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.privacy-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: #6ed66e;
}

.privacy-text {
  font-size: 0.95rem;
  line-height: 1.65;
  color: var(--text-secondary);
}

/* Final Call To Action Banner */
.final-cta-section {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 3rem 2rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
}

.final-cta-title {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text-primary);
}

.final-cta-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 600px;
}