/* ============================================
   IMG Converter - Style TALPPA v2
   Dark mode avec accents verts
   ============================================ */

:root {
    /* Couleurs principales */
    --bg-primary: #0a0a0a;
    --bg-secondary: #111111;
    --bg-card: #161616;
    --bg-card-hover: #1a1a1a;
    --bg-input: #0d0d0d;
    
    /* Bordures */
    --border-color: #2a2a2a;
    --border-color-hover: #3a3a3a;
    
    /* Accent vert TALPPA */
    --accent: #00d46a;
    --accent-hover: #00e676;
    --accent-dim: rgba(0, 212, 106, 0.15);
    --accent-glow: rgba(0, 212, 106, 0.3);
    
    /* Texte */
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --text-muted: #666666;
    
    /* États */
    --success: #00d46a;
    --error: #ff4757;
    --warning: #ffa502;
    
    /* Typographie */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* Espacements */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.5;
}

/* App Container */
.app {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ============================================
   Header
   ============================================ */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 0;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 32px;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 20px;
}

.logo {
    display: flex;
    align-items: center;
}

.logo-img {
    height: 36px;
    width: auto;
}

.title {
    font-size: 20px;
    font-weight: 500;
    color: var(--text-primary);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

/* Mode Toggle */
.mode-toggle {
    display: flex;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.mode-btn {
    padding: 8px 16px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.mode-btn:hover {
    color: var(--text-primary);
}

.mode-btn.active {
    background: var(--accent);
    color: #000;
}

.server-status {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    font-size: 13px;
}

.status-dot {
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--accent-glow);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* ============================================
   Cards
   ============================================ */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    margin-bottom: 24px;
}

.card-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 16px 24px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 1px;
}

.card-icon {
    font-size: 14px;
}

/* ============================================
   Parameters Card
   ============================================ */
.parameters-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 40px;
    padding: 24px;
}

.parameters-column {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    margin-bottom: 0;
}

.form-label {
    display: block;
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 12px;
    font-weight: 500;
}

.form-hint {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 10px;
    font-style: italic;
}

/* Format Grid */
.format-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
}

.format-btn {
    padding: 10px 12px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.format-btn:hover {
    border-color: var(--border-color-hover);
    color: var(--text-primary);
}

.format-btn.active {
    background: var(--accent);
    border-color: var(--accent);
    color: #000;
    font-weight: 600;
}

/* Options Row */
.options-row {
    display: flex;
    gap: 16px;
}

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

/* Slider */
.slider-label, .filter-item label {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
    font-size: 12px;
    color: var(--text-secondary);
}

.slider-value, .filter-value {
    color: var(--accent);
    font-weight: 600;
}

.slider {
    width: 100%;
    height: 6px;
    background: var(--border-color);
    border-radius: 3px;
    outline: none;
    -webkit-appearance: none;
    appearance: none;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    background: var(--accent);
    border-radius: 50%;
    cursor: pointer;
    transition: transform var(--transition-fast);
}

.slider::-webkit-slider-thumb:hover {
    transform: scale(1.1);
}

.slider::-moz-range-thumb {
    width: 16px;
    height: 16px;
    background: var(--accent);
    border-radius: 50%;
    border: none;
    cursor: pointer;
}

/* Checkbox */
.checkbox-label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    font-size: 13px;
    color: var(--text-secondary);
}

.checkbox-label.small {
    font-size: 11px;
    margin-top: 10px;
}

.checkbox-label input {
    display: none;
}

.checkbox-custom {
    width: 18px;
    height: 18px;
    border: 2px solid var(--border-color);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.checkbox-label input:checked + .checkbox-custom {
    background: var(--accent);
    border-color: var(--accent);
}

.checkbox-label input:checked + .checkbox-custom::after {
    content: '✓';
    color: #000;
    font-size: 11px;
    font-weight: bold;
}

/* Resize Options */
.resize-options {
    margin-top: 12px;
}

.resize-options.hidden {
    display: none;
}

.resize-inputs {
    display: flex;
    align-items: center;
    gap: 8px;
}

.resize-inputs input {
    flex: 1;
    padding: 8px 10px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 13px;
    outline: none;
    width: 80px;
}

.resize-inputs input:focus {
    border-color: var(--accent);
}

.resize-inputs input::placeholder {
    color: var(--text-muted);
}

.resize-inputs span {
    color: var(--text-muted);
}

/* ============================================
   Filters
   ============================================ */
.filters-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.filter-item {
    padding: 12px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
}

.filter-toggles {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 16px;
}

.toggle-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 12px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.toggle-btn input {
    display: none;
}

.toggle-btn:has(input:checked) {
    background: var(--accent-dim);
    border-color: var(--accent);
    color: var(--accent);
}

.toggle-btn:hover {
    border-color: var(--border-color-hover);
}

.reset-filters-btn {
    padding: 8px 14px;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    font-size: 12px;
    cursor: pointer;
    transition: all var(--transition-fast);
    margin-left: auto;
}

.reset-filters-btn:hover {
    border-color: var(--error);
    color: var(--error);
}

/* ============================================
   Dropzone
   ============================================ */
.dropzone-card {
    border-style: dashed;
    border-width: 2px;
    transition: all var(--transition-normal);
}

.dropzone-card:hover,
.dropzone-card.dragover {
    border-color: var(--accent);
    background: var(--accent-dim);
}

.dropzone {
    padding: 50px 40px;
    text-align: center;
    cursor: pointer;
}

.dropzone-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
}

.dropzone-icon {
    width: 70px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-input);
    border: 2px solid var(--border-color);
    border-radius: 50%;
    color: var(--accent);
    transition: all var(--transition-normal);
}

.dropzone-card:hover .dropzone-icon,
.dropzone-card.dragover .dropzone-icon {
    border-color: var(--accent);
    transform: scale(1.05);
}

.dropzone-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
}

.dropzone-subtitle {
    color: var(--text-secondary);
    font-size: 14px;
}

.dropzone-formats {
    color: var(--text-muted);
    font-size: 12px;
    margin-top: 4px;
}

/* ============================================
   Batch Section
   ============================================ */
.batch-card.hidden {
    display: none;
}

.batch-count {
    margin-left: auto;
    color: var(--accent);
    font-weight: 600;
}

.batch-list {
    max-height: 250px;
    overflow-y: auto;
    padding: 16px;
}

.batch-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    margin-bottom: 8px;
}

.batch-item:last-child {
    margin-bottom: 0;
}

.batch-item-thumb {
    width: 40px;
    height: 40px;
    border-radius: 4px;
    object-fit: cover;
    background: var(--bg-secondary);
}

.batch-item-info {
    flex: 1;
    min-width: 0;
}

.batch-item-name {
    font-size: 13px;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.batch-item-size {
    font-size: 11px;
    color: var(--text-muted);
}

.batch-item-remove {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-muted);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.batch-item-remove:hover {
    border-color: var(--error);
    color: var(--error);
}

.batch-actions {
    display: flex;
    justify-content: space-between;
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
    outline: none;
}

.btn-primary {
    background: var(--accent);
    color: #000;
}

.btn-primary:hover:not(:disabled) {
    background: var(--accent-hover);
    transform: translateY(-1px);
}

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

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

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

/* ============================================
   Preview Section
   ============================================ */
.preview-card.hidden {
    display: none;
}

.preview-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    padding: 24px;
}

.preview-panel {
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
}

.preview-label {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 1px;
    color: var(--text-secondary);
}

.preview-stats {
    display: flex;
    gap: 12px;
}

.preview-size,
.preview-time {
    font-size: 12px;
    color: var(--text-muted);
}

.preview-time {
    color: var(--accent);
}

.preview-image-container {
    position: relative;
    min-height: 220px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    background: 
        linear-gradient(45deg, #1a1a1a 25%, transparent 25%),
        linear-gradient(-45deg, #1a1a1a 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, #1a1a1a 75%),
        linear-gradient(-45deg, transparent 75%, #1a1a1a 75%);
    background-size: 16px 16px;
    background-position: 0 0, 0 8px, 8px -8px, -8px 0px;
    background-color: #141414;
}

.preview-image-container img {
    max-width: 100%;
    max-height: 280px;
    object-fit: contain;
    border-radius: var(--radius-sm);
}

.preview-image-container img.hidden {
    display: none;
}

.preview-info {
    padding: 12px 16px;
    font-size: 12px;
    color: var(--text-muted);
    border-top: 1px solid var(--border-color);
}

/* Loading Spinner */
.loading-spinner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    color: var(--text-secondary);
    font-size: 13px;
}

.loading-spinner.hidden {
    display: none;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Preview Actions */
.preview-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
    padding: 24px;
    border-top: 1px solid var(--border-color);
}

/* ============================================
   Footer
   ============================================ */
.footer {
    margin-top: auto;
    padding: 24px 0;
    text-align: center;
    color: var(--text-muted);
    font-size: 13px;
    border-top: 1px solid var(--border-color);
}

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

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

/* ============================================
   Toast Notifications
   ============================================ */
.toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    z-index: 1000;
}

.toast {
    padding: 14px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 14px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
    animation: slideIn 0.3s ease;
    display: flex;
    align-items: center;
    gap: 10px;
}

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

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

.toast-icon {
    font-size: 18px;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* ============================================
   Utilities
   ============================================ */
.hidden {
    display: none !important;
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 1100px) {
    .parameters-content {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .filters-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 900px) {
    .preview-grid {
        grid-template-columns: 1fr;
    }
    
    .header {
        flex-direction: column;
        gap: 16px;
        align-items: flex-start;
    }
    
    .header-right {
        flex-wrap: wrap;
        width: 100%;
        justify-content: space-between;
    }
}

@media (max-width: 600px) {
    .app {
        padding: 0 16px;
    }
    
    .format-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .filters-grid {
        grid-template-columns: 1fr;
    }
    
    .options-row {
        flex-direction: column;
    }
    
    .preview-actions {
        flex-direction: column;
    }
    
    .preview-actions .btn {
        width: 100%;
        justify-content: center;
    }
    
    .batch-actions {
        flex-direction: column;
        gap: 12px;
    }
    
    .batch-actions .btn {
        width: 100%;
        justify-content: center;
    }
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-color-hover);
}