/* =========================================
   1. GLOBAL VARIABLES (Primitives & Structure)
   Modern Palette (Slate + Indigo)
   ========================================= */
:root {
  /* --- Primitive Color Tokens (Slate Scale) --- */
  --color-white: #ffffff;
  --color-black: #000000;
  
  --color-slate-50:  #f8fafc;
  --color-slate-100: #f1f5f9;
  --color-slate-200: #e2e8f0;
  --color-slate-300: #cbd5e1;
  --color-slate-400: #94a3b8;
  --color-slate-500: #64748b;
  --color-slate-600: #475569;
  --color-slate-700: #334155;
  --color-slate-800: #1e293b;
  --color-slate-900: #0f172a;
  --color-slate-950: #020617;

  /* --- Brand Tokens (Indigo Scale) --- */
  --color-indigo-50:  #eef2ff;
  --color-indigo-100: #e0e7ff;
  --color-indigo-200: #c7d2fe;
  --color-indigo-300: #a5b4fc;
  --color-indigo-400: #818cf8;
  --color-indigo-500: #6366f1;
  --color-indigo-600: #4f46e5;
  --color-indigo-700: #4338ca;
  --color-indigo-800: #3730a3;
  --color-indigo-900: #312e81;

  /* --- Utility Tokens (Functional) --- */
  --color-red-500:    #ef4444;
  --color-red-400:    #f87171;
  --color-orange-500: #f97316;
  --color-orange-400: #fb923c;
  --color-emerald-500:#10b981;
  --color-emerald-400:#34d399;

  /* --- RGB Definitions for Opacity --- */
  /* Indigo 600 */
  --color-primary-rgb: 79, 70, 229; 
  /* Slate 900 */
  --color-dark-rgb:    15, 23, 42;
  /* Emerald 500 */
  --color-success-rgb: 16, 185, 129;
  /* Red 500 */
  --color-error-rgb:   239, 68, 68;
  /* Orange 500 */
  --color-warning-rgb: 249, 115, 22;
  /* Slate 500 */
  --color-info-rgb:    100, 116, 139;

  /* --- Typography --- */
  --font-family-base: "FKGroteskNeue", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-family-mono: "Berkeley Mono", ui-monospace, SFMono-Regular, Consolas, monospace;

  --font-size-xs: 0.75rem;   /* 12px */
  --font-size-sm: 0.875rem;  /* 14px */
  --font-size-base: 1rem;    /* 16px */
  --font-size-md: 1rem;
  --font-size-lg: 1.125rem;  /* 18px */
  --font-size-xl: 1.25rem;   /* 20px */
  --font-size-2xl: 1.5rem;   /* 24px */
  --font-size-3xl: 1.875rem; /* 30px */
  --font-size-4xl: 2.25rem;  /* 36px */

  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --letter-spacing-tight: -0.025em;

  /* --- Spacing --- */
  --space-1: 1px;
  --space-2: 2px;
  --space-4: 0.25rem;
  --space-6: 0.375rem;
  --space-8: 0.5rem;
  --space-10: 0.625rem;
  --space-12: 0.75rem;
  --space-16: 1rem;
  --space-20: 1.25rem;
  --space-24: 1.5rem;
  --space-32: 2rem;

  /* --- Border Radius --- */
  --radius-sm: 0.375rem;
  --radius-base: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-full: 9999px;

  /* --- Animations --- */
  --duration-fast: 150ms;
  --duration-normal: 250ms;
  --ease-standard: cubic-bezier(0.4, 0, 0.2, 1);

  /* --- Icons --- */
  /* Dark icon for light mode */
  --select-caret-light: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="%23334155" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><polyline points="6 9 12 15 18 9"></polyline></svg>');
  /* Light icon for dark mode */
  --select-caret-dark: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="%23cbd5e1" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><polyline points="6 9 12 15 18 9"></polyline></svg>');
  
  /* --- Layout Widths --- */
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1280px;
}

/* =========================================
   2. THEME DEFINITIONS (Semantic Mapping)
   ========================================= */

/* --- Light Mode (Modern Clean) --- */
:root, [data-color-scheme="light"] {
  /* Backgrounds */
  --color-background: var(--color-slate-50);  /* Très léger gris bleuté */
  --color-surface:    var(--color-white);     /* Blanc pur pour les cartes */
  
  /* Text */
  --color-text:           var(--color-indigo-900); /* Presque noir */
  --color-text-secondary: var(--color-slate-500); /* Gris moyen */

  /* Brand / Primary */
  --color-primary:        var(--color-indigo-600);
  --color-primary-hover:  var(--color-indigo-700);
  --color-primary-active: var(--color-indigo-800);
  --color-btn-primary-text: var(--color-white);

  /* Secondary / Borders */
  --color-secondary:        var(--color-slate-100);
  --color-secondary-hover:  var(--color-slate-200);
  --color-secondary-active: var(--color-slate-300);
  
  --color-border:           var(--color-slate-200); /* Bordures subtiles */
  --color-border-secondary: var(--color-slate-300);
  
  --color-card-border:       var(--color-slate-200); /* Bordure carte */
  --color-card-border-inner: var(--color-slate-100);

  /* Status Colors */
  --color-error:   var(--color-red-500);
  --color-success: var(--color-emerald-500);
  --color-warning: var(--color-orange-500);
  --color-info:    var(--color-slate-500);

  /* Effects */
  --color-focus-ring: rgba(var(--color-primary-rgb), 0.3);
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-inset: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);

  /* Form Elements */
  --select-caret-current: var(--select-caret-light);

  /* Background Palette for Webcam Settings (Subtle) */
  --color-bg-1: var(--color-indigo-50); 
}

/* --- Dark Mode (Modern Deep) --- */
[data-color-scheme="dark"] {
  /* Backgrounds */
  --color-background: var(--color-slate-950); /* Très sombre, presque noir */
  --color-surface:    var(--color-slate-900); /* Surface légèrement plus claire */
  
  /* Text */
  --color-text:           var(--color-slate-50);  /* Presque blanc */
  --color-text-secondary: var(--color-slate-400); /* Gris clair */

  /* Brand / Primary (Lighter for dark mode) */
  --color-primary:        var(--color-indigo-500);
  --color-primary-hover:  var(--color-indigo-400);
  --color-primary-active: var(--color-indigo-300);
  --color-btn-primary-text: var(--color-white);

  /* Secondary / Borders */
  --color-secondary:        var(--color-slate-800);
  --color-secondary-hover:  var(--color-slate-700);
  --color-secondary-active: var(--color-slate-600);
  
  --color-border:           var(--color-slate-700);
  --color-border-secondary: var(--color-slate-600);
  
  --color-card-border:       var(--color-slate-800);
  --color-card-border-inner: var(--color-slate-800);

  /* Status Colors (Lighter for readability) */
  --color-error:   var(--color-red-400);
  --color-success: var(--color-emerald-400);
  --color-warning: var(--color-orange-400);
  --color-info:    var(--color-slate-400);

  /* Effects */
  --color-focus-ring: rgba(var(--color-primary-rgb), 0.5);
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
  
  /* Form Elements */
  --select-caret-current: var(--select-caret-dark);

  /* Background Palette for Webcam Settings */
  --color-bg-1: rgba(30, 41, 59, 0.5); /* Slate 800 with opacity */
}

/* System Preference Support */
@media (prefers-color-scheme: dark) {
  :root:not([data-color-scheme="light"]) {
    /* Copy of Dark Mode Variables */
    --color-background: var(--color-slate-950);
    --color-surface:    var(--color-slate-900);
    --color-text:           var(--color-slate-50);
    --color-text-secondary: var(--color-slate-400);
    --color-primary:        var(--color-indigo-500);
    --color-primary-hover:  var(--color-indigo-400);
    --color-primary-active: var(--color-indigo-300);
    --color-btn-primary-text: var(--color-white);
    --color-secondary:        var(--color-slate-800);
    --color-secondary-hover:  var(--color-slate-700);
    --color-secondary-active: var(--color-slate-600);
    --color-border:           var(--color-slate-700);
    --color-border-secondary: var(--color-slate-600);
    --color-card-border:       var(--color-slate-800);
    --color-card-border-inner: var(--color-slate-800);
    --color-error:   var(--color-red-400);
    --color-success: var(--color-emerald-400);
    --color-warning: var(--color-orange-400);
    --color-info:    var(--color-slate-400);
    --color-focus-ring: rgba(var(--color-primary-rgb), 0.5);
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
    --select-caret-current: var(--select-caret-dark);
    --color-bg-1: rgba(30, 41, 59, 0.5);
  }
}

/* =========================================
   3. BASE STYLES
   ========================================= */

@font-face {
  font-family: 'FKGroteskNeue';
  src: url('./FKGroteskNeue.woff2') format('woff2');
  font-weight: normal;
  font-style: normal;
  font-display: swap;
}

html {
  font-size: 16px;
  font-family: var(--font-family-base);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
}

*, *:before, *:after {
  box-sizing: inherit;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-text);
  /*letter-spacing: var(--letter-spacing-tight);*/
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-xl); }
h3 { font-size: var(--font-size-xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); text-transform: uppercase; letter-spacing: 0.05em; }

p {
  margin: 0 0 var(--space-16) 0;
  color: var(--color-text-secondary);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  transition: color var(--duration-fast) var(--ease-standard);
}

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

code, pre {
  font-family: var(--font-family-mono);
  font-size: 0.9em;
  background-color: var(--color-secondary);
  border-radius: var(--radius-sm);
  color: var(--color-text);
}

code {
  padding: 2px 4px;
}

pre {
  padding: var(--space-16);
  margin: var(--space-16) 0;
  overflow: auto;
  border: 1px solid var(--color-border);
}

/* =========================================
   4. COMPONENTS
   ========================================= */

/* Buttons - Modernized */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-8) var(--space-16);
  border-radius: var(--radius-base);
  font-size: var(--font-size-sm); /* Slightly smaller text for modern look */
  font-weight: var(--font-weight-medium);
  line-height: 1.5;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-standard);
  border: 1px solid transparent;
  text-decoration: none;
  position: relative;
  gap: var(--space-8);
}

.btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px var(--color-background), 0 0 0 4px var(--color-primary);
}

.btn:active {
  transform: translateY(1px);
}

.btn--primary {
  /*background-color: var(--color-primary);
  color: var(--color-btn-primary-text);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);*/
  background-color: var(--color-secondary);
  color: var(--color-text);
}

.btn--primary:hover {
  /*background-color: var(--color-primary-hover);
  box-shadow: 0 4px 6px -1px rgba(var(--color-primary-rgb), 0.2);*/
  background-color: var(--color-secondary-hover);
}

.btn--secondary {
  background-color: var(--color-secondary);
  color: var(--color-text);
}

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

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

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

.btn--sm {
  padding: var(--space-4) var(--space-10);
  font-size: var(--font-size-xs);
  border-radius: var(--radius-sm);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* Form elements - Modernized */
.form-control {
  display: block;
  width: 100%;
  padding: var(--space-8) var(--space-12);
  font-size: var(--font-size-sm);
  line-height: 1.5;
  color: var(--color-text);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-base);
  transition: all var(--duration-fast) var(--ease-standard);
  font-family: var(--font-family-base);
  box-shadow: 0 1px 2px 0 rgba(0,0,0,0.05);
}

.form-control:hover {
  border-color: var(--color-slate-400);
}
[data-color-scheme="dark"] .form-control:hover {
  border-color: var(--color-slate-500);
}

.form-control:focus {
  border-color: var(--color-primary);
  outline: none;
  box-shadow: 0 0 0 3px var(--color-focus-ring);
}

select.form-control {
  appearance: none;
  background-image: var(--select-caret-current);
  background-repeat: no-repeat;
  background-position: right var(--space-12) center;
  background-size: 16px;
  padding-right: var(--space-32);
  cursor: pointer;
}

.form-label {
  display: block;
  margin-bottom: var(--space-6);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-sm);
  color: var(--color-text);
}

/* Cards */
.card {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-card-border);
  box-shadow: var(--shadow-sm);
}

/* Container layout */
.container {
  width: 100%;
  margin: 0 auto;
  padding: var(--space-24);
  max-width: 1400px;
}

@media (min-width: 640px)  { .container { max-width: var(--container-sm); } }
@media (min-width: 768px)  { .container { max-width: var(--container-md); } }
@media (min-width: 1024px) { .container { max-width: var(--container-lg); } }
@media (min-width: 1280px) { .container { max-width: var(--container-xl); } }

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

/* --- Bouton Icone (Toggle Thème) --- */

/* Style pour rendre le bouton carré */
.btn--icon {
    padding: var(--space-8);
    line-height: 0;
    gap: 0;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Par défaut (Mode Clair) : On affiche la Lune, on cache le Soleil */
.icon-sun { display: none; }
.icon-moon { display: block; }

/* En Mode Sombre : On affiche le Soleil, on cache la Lune */
[data-color-scheme="dark"] .icon-sun { display: block; }
[data-color-scheme="dark"] .icon-moon { display: none; }


/* =========================================
   5. APP SPECIFIC STYLES
   ========================================= */

.app-header {
  text-align: center;
  margin-bottom: var(--space-32);
  padding-top: var(--space-20);
}

.app-header h1 {
  background: linear-gradient(135deg, var(--color-text) 0%, var(--color-text-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: inline-block;
  margin-bottom: var(--space-4);
}

.subtitle {
  color: var(--color-text-secondary);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-normal);
}

/* =========================================
   LAYOUT — Nouveau : empilement vertical
   webcam (pleine largeur) → control-panel → frames-section
   ========================================= */

/* La webcam-section occupe toute la largeur disponible */
.webcam-section {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-card-border);
  padding: var(--space-20);
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  width: 100%;
  margin-bottom: var(--space-24);
  overflow: visible;
}

/* La galerie s'affiche sous le control-panel, pleine largeur */
.frames-section {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-card-border);
  padding: var(--space-20);
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  width: 100%;
  min-height: 300px;
  margin-bottom: var(--space-32);
  overflow: visible;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-16);
  flex-shrink: 0;
  padding-bottom: var(--space-16);
  border-bottom: 1px solid var(--color-border-secondary);
}

.status-info {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.status {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.status.active {
  background-color: rgba(var(--color-success-rgb), 0.1);
  color: var(--color-success);
  border: 1px solid rgba(var(--color-success-rgb), 0.2);
}

.status.warning {
  background-color: rgba(var(--color-warning-rgb), 0.1);
  color: var(--color-warning);
  border: 1px solid rgba(var(--color-warning-rgb), 0.2);
}

.frame-count {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  padding: 2px 10px;
  background-color: var(--color-indigo-50);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  color: var(--color-indigo-700);
  font-weight: var(--font-weight-medium);
}
[data-color-scheme="dark"] .frame-count {
  background-color: rgba(var(--color-indigo-500), 0.2);
  color: var(--color-indigo-300);
}

/* Webcam Settings */
.webcam-settings-panel {
  margin-bottom: var(--space-16);
  padding: var(--space-16);
  background-color: var(--color-bg-1);
  border-radius: var(--radius-base);
  border: 1px solid var(--color-border);
}

.settings-grid {
  display: grid;
  grid-template-columns: 1fr 1fr auto auto;
  gap: var(--space-16);
  align-items: end;
}

@media (max-width: 640px) { .settings-grid { grid-template-columns: 1fr; } }

/* Colonne bouton dans le settings-grid */
.form-group--btn {
  display: flex;
  flex-direction: column;
}

/* Colonne toggles flip */
.form-group--toggles {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.flip-toggles {
  display: flex;
  flex-direction: row;
  gap: var(--space-16);
}

.flip-toggle {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  cursor: pointer;
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  user-select: none;
  white-space: nowrap;
}

.flip-toggle input[type="checkbox"] {
  width: 14px;
  height: 14px;
  accent-color: var(--color-primary);
  cursor: pointer;
  flex-shrink: 0;
}

.flip-toggle svg {
  flex-shrink: 0;
  color: var(--color-text-secondary);
}

.flip-toggle:has(input:checked) {
  color: var(--color-primary);
}

.flip-toggle:has(input:checked) svg {
  color: var(--color-primary);
}

.btn--full {
  width: 100%;
  white-space: nowrap;
}

/* Barre de capture : slider onion | bouton Capturer | slider framerate */
.capture-bar {
  display: flex;
  align-items: center;
  gap: var(--space-16);
  padding: var(--space-12) var(--space-16);
  background-color: var(--color-secondary);
  border-radius: var(--radius-base);
  border: 1px solid var(--color-border);
  margin-top: var(--space-12);
}

.capture-bar__slider {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  flex: 1;
  min-width: 0;
}

.capture-bar__label {
  display: flex;
  justify-content: center;
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-sm);
  white-space: nowrap;
}

.capture-bar__btn {
  flex-shrink: 0;
  white-space: nowrap;
}

/* Deuxième capture-bar : capture automatique */
.capture-bar--auto {
  margin-top: var(--space-8);
}

/* Case à cocher + label "Auto" */
.capture-bar__toggle {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
  cursor: pointer;
  flex-shrink: 0;
}

.capture-bar__checkbox {
  width: 18px;
  height: 18px;
  cursor: pointer;
  accent-color: var(--color-primary);
  margin: 0;
}

.capture-bar__toggle-label {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* Barre de progression intégrée */
.capture-bar__progress {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  flex: 0 0 120px;
}

.capture-bar__progress-bar {
  height: 4px;
  background-color: var(--color-border);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.capture-bar__progress-fill {
  height: 100%;
  width: 0%;
  background-color: var(--color-primary);
  border-radius: var(--radius-full);
  transition: width 0.3s var(--ease-standard);
}

.capture-bar__progress-label {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  text-align: center;
}

/* Sliders désactivés quand auto-capture est off */
.capture-bar--auto.is-disabled .capture-bar__slider {
  opacity: 0.45;
  pointer-events: none;
}

/* Video Container — pleine largeur naturellement */
.video-container {
  position: relative;
  width: 100%;
  background-color: var(--color-black);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: var(--space-16);
  aspect-ratio: 4 / 3; /* valeur de repli, écrasée par style inline JS */
  box-shadow: var(--shadow-md);
  max-height: calc(100dvh - 384px);
  margin-inline: auto;
}

video#webcam {
  width: 100%;
  height: 100%;
  object-fit: fill;
  display: block;
}

.onion-skin-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

/* Sliders */
input[type="range"] {
  width: 100%;
  height: 4px;
  border-radius: var(--radius-full);
  background: var(--color-slate-300);
  outline: none;
  -webkit-appearance: none;
  cursor: pointer;
}
[data-color-scheme="dark"] input[type="range"] {
  background: var(--color-slate-600);
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--color-primary);
  border: 2px solid var(--color-surface);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
  transition: transform 0.1s;
}
input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

/* Frame Gallery */
.frame-gallery {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
  gap: var(--space-8);
  padding: var(--space-12);
  background-color: var(--color-background);
  border-radius: var(--radius-base);
  border: 1px solid var(--color-card-border-inner);
  align-content: start;
  min-height: 200px;
}

.empty-state {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-32);
  color: var(--color-text-secondary);
  text-align: center;
  height: 100%;
}

.empty-state svg {
  margin-bottom: var(--space-16);
  opacity: 0.3;
  width: 64px;
  height: 64px;
}

.frame-item {
  position: relative;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  background-color: var(--color-surface);
  transition: all var(--duration-fast) var(--ease-standard);
  cursor: grab;
  box-shadow: var(--shadow-sm);
}

.frame-gallery[data-thumb-aspect="4-3"] .frame-item {
  aspect-ratio: 4 / 3;
}

.frame-gallery[data-thumb-aspect="16-9"] .frame-item {
  aspect-ratio: 16 / 9;
}


.frame-item:active { cursor: grabbing; }

.frame-item.dragging {
  opacity: 0.4;
  border: 2px dashed var(--color-primary);
}

.frame-item.drag-over {
  border-color: var(--color-primary);
  transform: scale(1.05);
}

.frame-item:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  z-index: 10;
}

.frame-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.frame-number {
  position: absolute;
  top: 4px;
  left: 4px;
  background-color: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  color: white;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 10px;
  font-weight: 600;
}

.frame-actions {
  position: absolute;
  top: 4px;
  right: 4px;
  display: flex;
  gap: 4px;
  opacity: 0;
  transition: opacity 0.2s;
}

.frame-item:hover .frame-actions { opacity: 1; }

.duplicate-frame-btn, .delete-frame-btn {
  background-color: rgba(255, 255, 255, 0.9);
  color: var(--color-slate-700);
  border: none;
  border-radius: 4px;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.duplicate-frame-btn:hover { color: var(--color-primary); }
.delete-frame-btn:hover { color: var(--color-error); }

/* Bottom Control Panel */
.control-panel {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-card-border);
  padding: var(--space-20);
  box-shadow: var(--shadow-md);
  margin-bottom: var(--space-24);
}

.action-buttons {
  display: flex;
  gap: var(--space-12);
  flex-wrap: wrap;
  align-items: center;
}

/* Modals */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s;
}

.modal.active {
  display: flex;
  opacity: 1;
}

.modal-content {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-32);
  max-width: 600px;
  width: 90%;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
  transform: scale(0.95);
  transition: transform 0.3s;
}

.modal.active .modal-content { transform: scale(1); }

/* Preview modal : beaucoup plus large et hauteur contrainte au viewport */
#previewModal .modal-content {
  max-width: min(94vw, 1200px);
  width: 94vw;
  max-height: 92vh;
  padding: var(--space-24);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

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

.close-btn {
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--color-text-secondary);
  padding: 4px;
  border-radius: var(--radius-sm);
}

.close-btn:hover {
  background-color: var(--color-secondary);
  color: var(--color-text);
}

/* Toast Notifications */
.notification-toast {
  position: fixed;
  bottom: var(--space-24);
  right: var(--space-24);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-16);
  box-shadow: var(--shadow-lg);
  z-index: 2000;
  min-width: 320px;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.notification-toast.info { border-left: 4px solid var(--color-primary); }
.notification-toast.success { border-left: 4px solid var(--color-success); }
.notification-toast.warning { border-left: 4px solid var(--color-warning); }
.notification-toast.error { border-left: 4px solid var(--color-error); }

.notification-title { font-weight: 600; color: var(--color-text); }
.notification-message { color: var(--color-text-secondary); font-size: 0.9em; }

/* Storage Warning */
.storage-warning-banner {
  background-color: rgba(var(--color-warning-rgb), 0.1);
  border: 1px solid rgba(var(--color-warning-rgb), 0.2);
  border-radius: var(--radius-base);
  padding: var(--space-12);
  margin-bottom: var(--space-16);
  display: flex;
  align-items: start;
  gap: var(--space-12);
}

.storage-warning-banner svg {
  color: var(--color-warning);
}

.storage-warning-content h4 { color: var(--color-text); margin-bottom: 4px; }
.storage-warning-content p { color: var(--color-text-secondary); font-size: 0.9em; margin: 0; }

/* Preview modal : canvas occupe tout l'espace vertical disponible */
.preview-content .preview-container {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* (canvas styles moved to .preview-canvas-wrapper canvas) */

/* Progress bar */
.progress-bar {
  width: 100%;
  height: 8px;
  background-color: var(--color-secondary);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin: var(--space-16) 0;
}

.progress-fill {
  height: 100%;
  background-color: var(--color-primary);
  border-radius: var(--radius-full);
  transition: width 0.3s var(--ease-standard);
  width: 0%;
}

/* Preview controls */
.preview-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: var(--space-16);
  gap: var(--space-12);
  flex-shrink: 0;
}

.preview-info {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

/* Scrubber de navigation image par image */
.preview-scrubber {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  margin-top: var(--space-8);
}

.preview-scrubber input[type="range"] {
  width: 100%;
  height: 6px;
  cursor: pointer;
}

.preview-scrubber input[type="range"]::-webkit-slider-thumb {
  width: 18px;
  height: 18px;
}

.preview-scrubber-label {
  display: flex;
  justify-content: space-between;
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  user-select: none;
}

/* Slider labels */
.slider-labels {
  display: flex;
  justify-content: space-between;
  margin-top: var(--space-4);
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}

/* Notification header */
.notification-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-8);
}

.notification-close {
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--color-text-secondary);
  padding: 2px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.notification-close:hover {
  color: var(--color-text);
  background-color: var(--color-secondary);
}

/* Hint text */
.hint {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin: 0;
}

/* =========================================
   NEW FEATURES
   ========================================= */

/* ── Nom du projet ── */
.project-name-wrapper {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.project-name-wrapper h1 {
  font-size: var(--font-size-2xl);
  flex-shrink: 0;
  line-height: 1;
}

.project-name-input {
  font-size: var(--font-size-base);
  /*font-weight: var(--font-weight-bold);*/
  font-family: var(--font-family-base);
  color: var(--color-text);
  background: rgba(var(--color-warning-rgb), 0.1);
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  padding: 2px var(--space-6);
  outline: none;
  width: 100%;
  min-width: 8ch;
  max-width: 40ch;
  line-height: var(--line-height-tight);
  transition: border-color var(--duration-fast) var(--ease-standard),
              background var(--duration-fast) var(--ease-standard);
}

.project-name-input:hover {
  border-color: var(--color-border);
  background: var(--color-secondary);
}

.project-name-input:focus {
  border-color: var(--color-primary);
  background: var(--color-surface);
  box-shadow: 0 0 0 3px var(--color-focus-ring);
}

/* ── Durée estimée ── */
.duration-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-4);
  padding: 2px 10px;
  background-color: rgba(var(--color-info-rgb), 0.08);
  border: 1px solid rgba(var(--color-info-rgb), 0.2);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-medium);
  font-variant-numeric: tabular-nums;
}

[data-color-scheme="dark"] .duration-badge {
  background-color: rgba(var(--color-info-rgb), 0.12);
}
.frames-section__header {
  flex-wrap: wrap;
  gap: var(--space-12);
  align-items: flex-start;
}

.frames-header-left {
  display: flex;
  align-items: center;
  gap: var(--space-12);
  flex-wrap: wrap;
}

.frames-header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  flex-wrap: wrap;
  margin-left: auto;
}

/* ── Bouton danger ── */
.btn--danger {
  color: var(--color-error);
  border-color: rgba(var(--color-error-rgb), 0.35);
}
.btn--danger:hover {
  background-color: rgba(var(--color-error-rgb), 0.1);
  border-color: var(--color-error);
}

/* ── Bouton actif (selection mode on) ── */
.btn--active {
  background-color: var(--color-primary) !important;
  color: var(--color-btn-primary-text) !important;
  border-color: var(--color-primary) !important;
}

/* ── Sélection multiple ── */
.frame-gallery.selection-mode .frame-item {
  cursor: pointer;
}

.frame-item.selected {
  border-color: var(--color-primary) !important;
  box-shadow: 0 0 0 3px rgba(var(--color-primary-rgb), 0.25), var(--shadow-md);
}

.selection-checkbox {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(255,255,255,0.85);
  border: 2px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s;
  pointer-events: none;
}

.selection-checkbox svg { opacity: 0; transition: opacity 0.15s; }

.selection-checkbox.checked {
  background: var(--color-primary);
  border-color: var(--color-primary);
}
.selection-checkbox.checked svg { opacity: 1; stroke: white; }

/* ── Onion skin : second range slider (calques) ── */
.onion-layers-range {
  margin-top: var(--space-4);
  accent-color: var(--color-warning);
}

.capture-bar__label {
  display: flex;
  justify-content: space-between;
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-sm);
  white-space: nowrap;
}

.capture-bar__label-sub {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  font-weight: normal;
}

/* ── Preview zoom ── */
.preview-header-right {
  display: flex;
  align-items: center;
  gap: var(--space-12);
}

.zoom-controls {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  background: var(--color-secondary);
  border-radius: var(--radius-base);
  padding: 4px var(--space-8);
  border: 1px solid var(--color-border);
}

.zoom-indicator {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  min-width: 2.8ch;
  text-align: center;
  font-variant-numeric: tabular-nums;
}

.preview-zoom-hint {
  text-align: center;
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  margin: var(--space-6) 0 0;
  opacity: 0.7;
  flex-shrink: 0;
}

/* Wrapper autour du canvas pour clipping lors du zoom */
.preview-canvas-wrapper {
  flex: 1;
  min-height: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border-radius: var(--radius-sm);
}

.preview-canvas-wrapper canvas {
  display: block;
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  border-radius: var(--radius-sm);
  transform-origin: center center;
  transition: transform 0.1s ease;
  cursor: zoom-in;
  user-select: none;
}

/* ── Icône carrée pour zoom +/- ── */
.btn--icon {
  padding: var(--space-6);
  width: 30px;
  height: 30px;
  line-height: 0;
}