/**
 * 🚀 ThibEquation Framework - Styles Interface CSV Spectaculaire
 * Version: 2.0.0-BETA
 * Auteur: Thib4204
 * 
 * Styles cosmiques pour le système d'import/export CSV
 * avec animations, drag & drop et visualisations élégantes
 */

/* ============================================
   VARIABLES CSS
   ============================================ */

:root {
    --csv-ui-primary: #667eea;
    --csv-ui-secondary: #764ba2;
    --csv-ui-success: #10b981;
    --csv-ui-error: #ef4444;
    --csv-ui-warning: #f59e0b;
    --csv-ui-info: #3b82f6;
    
    --csv-ui-bg: #1a1a2e;
    --csv-ui-bg-light: #16213e;
    --csv-ui-text: #ffffff;
    --csv-ui-text-muted: #a0aec0;
    
    --csv-ui-border: rgba(255, 255, 255, 0.1);
    --csv-ui-border-active: rgba(102, 126, 234, 0.5);
    
    --csv-ui-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    --csv-ui-shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.4);
    
    --csv-ui-transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --csv-ui-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* ============================================
   CONTENEUR PRINCIPAL
   ============================================ */

.csv-ui {
    padding: 2rem;
    background: var(--csv-ui-bg);
    border-radius: 16px;
    box-shadow: var(--csv-ui-shadow);
}

.csv-ui--cosmic {
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 20%, #1a1a2e 100%);
    position: relative;
    overflow: hidden;
}

.csv-ui--cosmic::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(102, 126, 234, 0.05) 1px, transparent 1px);
    background-size: 40px 40px;
    animation: csvStarsMove 30s linear infinite;
    pointer-events: none;
}

@keyframes csvStarsMove {
    0% { transform: translate(0, 0) rotate(0deg); }
    100% { transform: translate(40px, 40px) rotate(360deg); }
}

/* ============================================
   TITRES
   ============================================ */

.csv-ui__title {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--csv-ui-text);
    margin-bottom: 1.5rem;
    position: relative;
}

.csv-ui__title svg {
    color: var(--csv-ui-primary);
    flex-shrink: 0;
}

/* ============================================
   ZONE D'IMPORT
   ============================================ */

.csv-ui__import-section {
    margin-bottom: 2rem;
    position: relative;
    z-index: 1;
}

.csv-ui__drop-zone {
    border: 3px dashed var(--csv-ui-border);
    border-radius: 12px;
    padding: 3rem 2rem;
    text-align: center;
    background: rgba(255, 255, 255, 0.02);
    transition: all var(--csv-ui-transition);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.csv-ui__drop-zone::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(102, 126, 234, 0.1) 50%, 
        transparent 100%);
    transition: left 0.5s ease;
}

.csv-ui__drop-zone:hover {
    border-color: var(--csv-ui-border-active);
    background: rgba(102, 126, 234, 0.05);
    transform: translateY(-2px);
}

.csv-ui__drop-zone:hover::before {
    left: 100%;
}

.csv-ui__drop-zone--active {
    border-color: var(--csv-ui-primary);
    background: rgba(102, 126, 234, 0.1);
    transform: scale(1.02);
    box-shadow: 0 0 30px rgba(102, 126, 234, 0.3);
}

.csv-ui__drop-zone-content {
    position: relative;
    z-index: 1;
}

.csv-ui__drop-zone-icon {
    margin-bottom: 1rem;
    color: var(--csv-ui-primary);
    animation: csvIconFloat 3s ease-in-out infinite;
}

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

.csv-ui__drop-zone-text {
    margin: 0 0 0.5rem 0;
    color: var(--csv-ui-text);
}

.csv-ui__drop-zone-text strong {
    display: block;
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.csv-ui__drop-zone-text span {
    color: var(--csv-ui-text-muted);
    font-size: 0.9rem;
}

.csv-ui__drop-zone-formats {
    margin: 0;
    font-size: 0.85rem;
    color: var(--csv-ui-text-muted);
}

.csv-ui__file-input {
    display: none;
}

/* ============================================
   BOUTONS D'ACTION
   ============================================ */

.csv-ui__actions {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
    flex-wrap: wrap;
}

.csv-ui__btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 0.95rem;
    font-weight: 600;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all var(--csv-ui-transition);
    position: relative;
    overflow: hidden;
}

.csv-ui__btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.csv-ui__btn:hover::before {
    width: 300px;
    height: 300px;
}

.csv-ui__btn svg {
    position: relative;
    z-index: 1;
    flex-shrink: 0;
}

.csv-ui__btn span {
    position: relative;
    z-index: 1;
}

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

.csv-ui__btn--primary {
    background: linear-gradient(135deg, var(--csv-ui-primary), var(--csv-ui-secondary));
    color: white;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.csv-ui__btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.4);
}

.csv-ui__btn--secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--csv-ui-text);
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.csv-ui__btn--secondary:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

.csv-ui__btn--export {
    background: rgba(16, 185, 129, 0.1);
    color: var(--csv-ui-success);
    border: 2px solid rgba(16, 185, 129, 0.3);
}

.csv-ui__btn--export:hover {
    background: rgba(16, 185, 129, 0.2);
    border-color: var(--csv-ui-success);
    transform: translateY(-2px);
}

/* ============================================
   ZONE D'EXPORT
   ============================================ */

.csv-ui__export-section {
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 12px;
    border: 1px solid var(--csv-ui-border);
    position: relative;
    z-index: 1;
}

.csv-ui__export-options {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* ============================================
   ZONE DE STATUT
   ============================================ */

.csv-ui__status {
    padding: 1rem 1.5rem;
    border-radius: 10px;
    margin-bottom: 2rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    animation: csvStatusSlideIn 0.4s var(--csv-ui-bounce);
    position: relative;
    z-index: 1;
}

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

.csv-ui__status--loading {
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.3);
    color: var(--csv-ui-info);
}

.csv-ui__status--success {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: var(--csv-ui-success);
}

.csv-ui__status--error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: var(--csv-ui-error);
}

.csv-ui__status-content {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.csv-ui__status-icon svg {
    animation: csvStatusIconPulse 2s ease-in-out infinite;
}

@keyframes csvStatusIconPulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.7; transform: scale(0.95); }
}

.csv-ui__status-message {
    font-weight: 600;
}

.csv-ui__status-progress {
    height: 4px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 2px;
    overflow: hidden;
}

.csv-ui__status-progress-bar {
    height: 100%;
    background: currentColor;
    border-radius: 2px;
    transition: width 0.3s ease;
}

@keyframes csvProgressIndeterminate {
    0% {
        width: 0%;
        transform: translateX(0);
    }
    50% {
        width: 50%;
        transform: translateX(50%);
    }
    100% {
        width: 0%;
        transform: translateX(100%);
    }
}

/* ============================================
   PRÉVISUALISATION
   ============================================ */

.csv-ui__preview {
    margin-bottom: 2rem;
    position: relative;
    z-index: 1;
}

.csv-ui__preview-info {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.csv-ui__preview-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.4rem 1rem;
    background: rgba(102, 126, 234, 0.1);
    color: var(--csv-ui-primary);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    border: 1px solid rgba(102, 126, 234, 0.3);
}

.csv-ui__preview-note {
    color: var(--csv-ui-text-muted);
    font-size: 0.85rem;
}

.csv-ui__preview-table-container {
    overflow-x: auto;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 10px;
    border: 1px solid var(--csv-ui-border);
}

.csv-ui__preview-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.csv-ui__preview-table thead {
    background: rgba(102, 126, 234, 0.1);
    position: sticky;
    top: 0;
    z-index: 10;
}

.csv-ui__preview-table th {
    padding: 0.75rem 1rem;
    text-align: left;
    font-weight: 600;
    color: var(--csv-ui-primary);
    border-bottom: 2px solid rgba(102, 126, 234, 0.3);
    white-space: nowrap;
}

.csv-ui__preview-table td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--csv-ui-border);
    color: var(--csv-ui-text);
}

.csv-ui__preview-table tbody tr {
    transition: background 0.2s ease;
}

.csv-ui__preview-table tbody tr:hover {
    background: rgba(255, 255, 255, 0.05);
}

/* ============================================
   STATISTIQUES
   ============================================ */

.csv-ui__statistics {
    position: relative;
    z-index: 1;
}

.csv-ui__statistics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.csv-ui__stat-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--csv-ui-border);
    border-radius: 12px;
    padding: 1.5rem;
    transition: all var(--csv-ui-transition);
}

.csv-ui__stat-card:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--csv-ui-border-active);
    transform: translateY(-4px);
    box-shadow: var(--csv-ui-shadow-hover);
}

.csv-ui__stat-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--csv-ui-border);
}

.csv-ui__stat-label {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--csv-ui-primary);
}

.csv-ui__stat-count {
    font-size: 0.8rem;
    color: var(--csv-ui-text-muted);
    background: rgba(255, 255, 255, 0.05);
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
}

.csv-ui__stat-values {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.csv-ui__stat-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.csv-ui__stat-name {
    color: var(--csv-ui-text-muted);
    font-size: 0.9rem;
}

.csv-ui__stat-value {
    color: var(--csv-ui-text);
    font-weight: 600;
    font-size: 1rem;
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 768px) {
    .csv-ui {
        padding: 1.5rem;
    }
    
    .csv-ui__drop-zone {
        padding: 2rem 1rem;
    }
    
    .csv-ui__actions,
    .csv-ui__export-options {
        flex-direction: column;
    }
    
    .csv-ui__btn {
        width: 100%;
        justify-content: center;
    }
    
    .csv-ui__statistics-grid {
        grid-template-columns: 1fr;
    }
    
    .csv-ui__preview-table {
        font-size: 0.8rem;
    }
    
    .csv-ui__preview-table th,
    .csv-ui__preview-table td {
        padding: 0.5rem 0.75rem;
    }
}

/* ============================================
   ACCESSIBILITÉ
   ============================================ */

.csv-ui__btn:focus,
.csv-ui__drop-zone:focus-within {
    outline: 3px solid var(--csv-ui-primary);
    outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
    .csv-ui--cosmic::before,
    .csv-ui__drop-zone-icon,
    .csv-ui__status,
    .csv-ui__btn::before {
        animation: none;
    }
    
    * {
        transition: none !important;
    }
}

@media (prefers-contrast: high) {
    .csv-ui {
        border: 2px solid currentColor;
    }
    
    .csv-ui__drop-zone {
        border-width: 4px;
    }
}

/* ============================================
   PRINT
   ============================================ */

@media print {
    .csv-ui__drop-zone,
    .csv-ui__actions,
    .csv-ui__export-section,
    .csv-ui__status {
        display: none !important;
    }
}