/* ==========================================================================
   Mon Studio Vidéo - Styles Principaux
   Application de montage vidéo pour enfants
   ========================================================================== */

/* --------------------------------------------------------------------------
   Variables CSS - Couleurs et thème ludique
   -------------------------------------------------------------------------- */
:root {
    /* Couleurs principales - Palette colorée et joyeuse */
    --color-primary: #6366f1;
    --color-primary-dark: #4f46e5;
    --color-primary-light: #818cf8;

    --color-secondary: #f472b6;
    --color-secondary-dark: #ec4899;

    --color-accent: #fbbf24;
    --color-accent-light: #fcd34d;

    --color-success: #34d399;
    --color-warning: #fbbf24;
    --color-danger: #f87171;

    /* Couleurs de fond */
    --bg-primary: #1e1b4b;
    --bg-secondary: #312e81;
    --bg-tertiary: #3730a3;
    --bg-card: rgba(255, 255, 255, 0.1);
    --bg-card-hover: rgba(255, 255, 255, 0.15);

    /* Texte */
    --text-primary: #ffffff;
    --text-secondary: #c7d2fe;
    --text-muted: #a5b4fc;

    /* Bordures et ombres */
    --border-color: rgba(255, 255, 255, 0.2);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.2);

    /* Tailles tactiles */
    --touch-min: 44px;
    --touch-ideal: 60px;
    --touch-large: 80px;

    /* Espacements */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;

    /* Bordures arrondies */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;

    /* Police */
    --font-family: 'Fredoka', 'Comic Sans MS', cursive, sans-serif;
}

/* --------------------------------------------------------------------------
   Reset et styles de base
   -------------------------------------------------------------------------- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-tap-highlight-color: transparent;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-family);
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 50%, var(--bg-tertiary) 100%);
    color: var(--text-primary);
    min-height: 100vh;
    min-height: 100dvh;
    overflow-x: hidden;
    overflow-y: auto;
    touch-action: manipulation;
    user-select: none;
    -webkit-user-select: none;
    overscroll-behavior-x: none;
    scrollbar-width: thin;
    scrollbar-color: var(--color-primary) rgba(0, 0, 0, 0.3);
}

body::-webkit-scrollbar {
    width: 10px;
}

body::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.3);
}

body::-webkit-scrollbar-thumb {
    background: var(--color-primary);
    border-radius: 5px;
}

body::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary-light);
}

#app {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    min-height: 100dvh;
}

/* --------------------------------------------------------------------------
   Header
   -------------------------------------------------------------------------- */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
    z-index: 100;
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.app-title {
    font-size: 1.25rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-primary);
}

.title-icon {
    font-size: 1.5rem;
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

/* S'assurer que les boutons du header sont cliquables */
.header-right .btn {
    position: relative;
    z-index: 101;
    pointer-events: auto;
}

#btnNewProjectDirect {
    z-index: 102;
}

/* --------------------------------------------------------------------------
   Boutons
   -------------------------------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    min-width: var(--touch-min);
    min-height: var(--touch-min);
    padding: var(--spacing-sm) var(--spacing-md);
    font-family: inherit;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
    background: var(--bg-card);
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    -webkit-tap-highlight-color: transparent;
}

.btn:hover, .btn:focus {
    background: var(--bg-card-hover);
    transform: scale(1.02);
}

.btn:active {
    transform: scale(0.98);
}

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

.btn-icon {
    padding: var(--spacing-sm);
    border-radius: var(--radius-full);
    min-width: var(--touch-ideal);
    min-height: var(--touch-ideal);
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover, .btn-primary:focus {
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-secondary-dark) 100%);
    box-shadow: var(--shadow-lg);
}

.btn-control {
    width: var(--touch-ideal);
    height: var(--touch-ideal);
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.15);
}

.btn-play {
    width: var(--touch-large);
    height: var(--touch-large);
    background: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.btn-tool {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    min-width: var(--touch-ideal);
    min-height: var(--touch-ideal);
}

.btn-tool.active {
    background: var(--color-primary);
    border-color: var(--color-primary-light);
}

.btn-tool.btn-small {
    min-width: var(--touch-min);
    min-height: var(--touch-min);
}

.btn-add-media {
    min-width: var(--touch-large);
    min-height: var(--touch-large);
    flex-direction: column;
    gap: var(--spacing-xs);
    background: linear-gradient(135deg, var(--color-success) 0%, #10b981 100%);
    border-radius: var(--radius-lg);
    font-size: 0.875rem;
    box-shadow: var(--shadow-md);
}

.btn-add-media .icon {
    font-size: 1.5rem;
}

.btn-history {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-sm) var(--spacing-lg);
}

.btn-large {
    min-height: var(--touch-ideal);
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.125rem;
    border-radius: var(--radius-lg);
}

.btn-close {
    padding: var(--spacing-sm);
    background: transparent;
    border-radius: var(--radius-full);
}

.icon {
    font-size: 1.25rem;
    line-height: 1;
}

/* --------------------------------------------------------------------------
   Main Content
   -------------------------------------------------------------------------- */
.app-main {
    flex: 1 0 auto;
    display: flex;
    flex-direction: column;
    padding: var(--spacing-sm);
    gap: var(--spacing-sm);
}

/* --------------------------------------------------------------------------
   Preview Section
   -------------------------------------------------------------------------- */
.preview-section {
    flex-shrink: 0;
    min-height: 250px;
    height: 35vh;
    max-height: 400px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.preview-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: rgba(0, 0, 0, 0.3);
    border-radius: var(--radius-lg);
    overflow: hidden;
    min-height: 0; /* Important pour que flex fonctionne correctement */
}

.preview-wrapper {
    flex: 1;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #000;
    min-height: 0; /* Important pour que flex fonctionne correctement */
    overflow: hidden;
}

#previewVideo, #previewCanvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
}

#previewVideo {
    display: none;
}

#previewVideo.active {
    display: block;
}

#previewCanvas {
    display: none;
}

#previewCanvas.active {
    display: block;
}

/* Vidéo d'incrustation (Picture-in-Picture) */
#previewVideoOverlay {
    position: absolute;
    z-index: 5;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    object-fit: contain;
    background: #000;
}

#previewVideoOverlay.active {
    display: block;
}

/* Conteneur des overlays (textes, stickers) */
#previewOverlays {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10;
    pointer-events: none;
    overflow: hidden;
}

/* Overlay texte/sticker individuel */
.preview-overlay {
    position: absolute;
    white-space: nowrap;
    transition: opacity 0.1s ease, transform 0.1s ease;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.preview-placeholder {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    text-align: center;
    padding: var(--spacing-lg);
    z-index: 1;
}

.preview-placeholder.hidden {
    display: none;
}

.placeholder-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
    animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.preview-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm);
    background: rgba(0, 0, 0, 0.5);
}

.time-display {
    font-family: 'Courier New', monospace;
    font-size: 0.875rem;
    color: var(--text-secondary);
    min-width: 100px;
    text-align: center;
}

.time-separator {
    margin: 0 var(--spacing-xs);
    opacity: 0.5;
}

/* --------------------------------------------------------------------------
   Media Library Section
   -------------------------------------------------------------------------- */
.media-section {
    flex-shrink: 0;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
}

.section-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

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

.media-library {
    display: flex;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

.media-library::-webkit-scrollbar {
    display: none;
}

.media-items {
    display: flex;
    gap: var(--spacing-sm);
    flex-shrink: 0;
}

.media-item {
    position: relative;
    width: var(--touch-large);
    height: var(--touch-large);
    border-radius: var(--radius-md);
    overflow: hidden;
    cursor: grab;
    flex-shrink: 0;
    border: 2px solid transparent;
    transition: all var(--transition-fast);
}

.media-item:hover, .media-item:focus {
    border-color: var(--color-primary);
    transform: scale(1.05);
}

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

.media-item.selected {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 2px var(--color-accent);
}

.media-item.dragging {
    opacity: 0.5;
    transform: scale(1.1);
}

.media-thumb {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.media-type-icon {
    position: absolute;
    bottom: 4px;
    right: 4px;
    width: 24px;
    height: 24px;
    background: rgba(0, 0, 0, 0.7);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
}

.media-duration {
    position: absolute;
    bottom: 4px;
    left: 4px;
    padding: 2px 6px;
    background: rgba(0, 0, 0, 0.7);
    border-radius: var(--radius-sm);
    font-size: 0.625rem;
    font-family: 'Courier New', monospace;
}

.media-delete {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 24px;
    height: 24px;
    background: var(--color-danger);
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
}

.media-item:hover .media-delete,
.media-item:focus .media-delete {
    display: flex;
}

/* --------------------------------------------------------------------------
   History Controls (Undo/Redo)
   -------------------------------------------------------------------------- */
.history-controls {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) 0;
    flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   Modals
   -------------------------------------------------------------------------- */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.modal.visible {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    max-width: 90%;
    max-height: 90vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    transform: translateY(20px);
    transition: transform var(--transition-normal);
}

.modal.visible .modal-content {
    transform: translateY(0);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    flex-shrink: 0;
}

.modal-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
}

.modal-body {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
    min-height: 0;
}

/* Help Modal */
.help-item {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
    padding: var(--spacing-md);
    background: var(--bg-card);
    border-radius: var(--radius-md);
}

.help-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.help-text strong {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-size: 1rem;
}

.help-text p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.5;
}

/* Export Modal */
.export-options h3 {
    font-size: 1rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

.quality-options {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.quality-option {
    display: flex;
    align-items: center;
    padding: var(--spacing-md);
    background: var(--bg-card);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.quality-option:hover {
    background: var(--bg-card-hover);
}

.quality-option input {
    display: none;
}

.quality-option input:checked + .quality-label {
    color: var(--color-accent);
}

.quality-option input:checked + .quality-label::before {
    content: '✓ ';
}

.quality-label {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.quality-name {
    font-weight: 600;
}

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

.export-progress {
    margin-top: var(--spacing-md);
}

#btnStartExport {
    width: 100%;
    margin-top: var(--spacing-md);
}

/* Processing Modal */
.modal-processing {
    text-align: center;
    min-width: 280px;
}

.processing-animation {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
    animation: spin 2s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.modal-processing h2 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.modal-processing p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

/* --------------------------------------------------------------------------
   Progress Bar
   -------------------------------------------------------------------------- */
.progress-bar {
    width: 100%;
    height: 12px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary), var(--color-accent));
    background-size: 200% 100%;
    border-radius: var(--radius-full);
    width: 0%;
    transition: width var(--transition-normal);
    animation: shimmer 2s linear infinite;
}

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.progress-text {
    margin-top: var(--spacing-sm);
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-align: center;
}

/* --------------------------------------------------------------------------
   Export Complete Modal
   -------------------------------------------------------------------------- */
.export-complete-body {
    text-align: center;
    padding: var(--spacing-lg);
}

.export-success-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
    animation: bounce 0.6s ease-in-out;
}

@keyframes bounce {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); }
}

.export-success-message {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.export-actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.btn-large {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-lg);
    min-height: 80px;
    border-radius: var(--radius-lg);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.btn-large:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.btn-large .btn-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-xs);
}

.btn-large .btn-text {
    font-size: 1.1rem;
    font-weight: 600;
}

.btn-large .btn-hint {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.7);
    margin-top: var(--spacing-xs);
}

.btn-large.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
}

.btn-large.btn-secondary {
    background: linear-gradient(135deg, #10b981, #059669);
}

.export-tip {
    font-size: 0.875rem;
    color: var(--color-accent);
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(251, 191, 36, 0.1);
    border-radius: var(--radius-md);
    border: 1px solid rgba(251, 191, 36, 0.3);
}

/* Masquer le bouton partager si non supporté */
.export-actions .btn-share-hidden {
    display: none;
}

/* --------------------------------------------------------------------------
   Toast Notifications
   -------------------------------------------------------------------------- */
.toast-container {
    position: fixed;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    z-index: 2000;
    pointer-events: none;
}

.toast {
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    animation: slideUp 0.3s ease;
    pointer-events: auto;
}

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

.toast.success {
    border-color: var(--color-success);
}

.toast.error {
    border-color: var(--color-danger);
}

.toast.warning {
    border-color: var(--color-warning);
}

.toast-icon {
    font-size: 1.25rem;
}

.toast-message {
    font-size: 0.875rem;
}

/* --------------------------------------------------------------------------
   Slider
   -------------------------------------------------------------------------- */
.slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 8px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    outline: none;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 24px;
    height: 24px;
    background: var(--color-primary);
    border-radius: var(--radius-full);
    cursor: pointer;
    box-shadow: var(--shadow-sm);
}

.slider::-moz-range-thumb {
    width: 24px;
    height: 24px;
    background: var(--color-primary);
    border-radius: var(--radius-full);
    cursor: pointer;
    border: none;
    box-shadow: var(--shadow-sm);
}

.volume-control {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-card);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-sm);
}

.volume-control .slider {
    flex: 1;
    max-width: 150px;
}

#volumeValue {
    font-size: 0.75rem;
    min-width: 40px;
    text-align: right;
    color: var(--text-secondary);
}

/* --------------------------------------------------------------------------
   Responsive - Mode Portrait
   -------------------------------------------------------------------------- */
@media (orientation: portrait) {
    .app-header {
        padding: var(--spacing-xs) var(--spacing-sm);
    }

    .app-title {
        font-size: 1rem;
    }

    .btn-text {
        display: none;
    }

    .btn-primary .btn-text {
        display: inline;
    }

    .preview-section {
        min-height: 200px;
        height: 30vh;
        max-height: 300px;
    }

    .media-library {
        padding: var(--spacing-xs);
    }

    .media-item {
        width: 64px;
        height: 64px;
    }

    .btn-add-media {
        min-width: 64px;
        min-height: 64px;
    }

    .section-hint {
        display: none;
    }

    .history-controls {
        padding: var(--spacing-xs) 0;
    }
}

/* --------------------------------------------------------------------------
   Responsive - Petit écran
   -------------------------------------------------------------------------- */
@media (max-width: 600px) {
    :root {
        --spacing-md: 12px;
        --spacing-lg: 16px;
    }

    .app-title span:not(.title-icon) {
        display: none;
    }

    .preview-controls {
        gap: var(--spacing-sm);
    }

    .btn-control {
        width: 48px;
        height: 48px;
    }

    .btn-play {
        width: 60px;
        height: 60px;
    }

    .modal-content {
        padding: var(--spacing-md);
        border-radius: var(--radius-lg);
    }
}

/* --------------------------------------------------------------------------
   Responsive - Grand écran (tablette paysage, desktop)
   -------------------------------------------------------------------------- */
@media (min-width: 1024px) {
    .app-main {
        padding: var(--spacing-md);
        gap: var(--spacing-md);
    }

    .preview-section {
        min-height: 300px;
        height: 40vh;
        max-height: 500px;
    }

    .media-item {
        width: 100px;
        height: 100px;
    }

    .btn-add-media {
        min-width: 100px;
        min-height: 100px;
    }
}

/* --------------------------------------------------------------------------
   Animations utilitaires
   -------------------------------------------------------------------------- */
.fade-in {
    animation: fadeIn 0.3s ease;
}

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

.scale-in {
    animation: scaleIn 0.3s ease;
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.shake {
    animation: shake 0.5s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

/* --------------------------------------------------------------------------
   États de drag & drop
   -------------------------------------------------------------------------- */
.drag-over {
    background: var(--color-primary) !important;
    opacity: 0.7;
    border: 2px dashed var(--text-primary) !important;
}

.dragging-active .track-placeholder {
    display: flex !important;
    border: 2px dashed var(--color-accent);
    background: rgba(251, 191, 36, 0.1);
}

/* --------------------------------------------------------------------------
   Accessibilité
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus visible pour accessibilité clavier */
.btn:focus-visible,
.media-item:focus-visible,
.slider:focus-visible {
    outline: 3px solid var(--color-accent);
    outline-offset: 2px;
}

/* --------------------------------------------------------------------------
   Print - Désactiver l'impression
   -------------------------------------------------------------------------- */
@media print {
    body {
        display: none;
    }
}