/* ========================================
   SOCIAL MEDIA TRACKER - STYLE PRINCIPAL
   Design moderne et corporate avec responsive amélioré
   ======================================== */

/* === VARIABLES & RESET === */
:root {
    /* Couleurs principales */
    --primary: #0F2942;
    --primary-light: #1A3E5F;
    --primary-dark: #081825;
    --secondary: #2A5E8C;
    --accent: #3B82F6;
    --accent-hover: #2563EB;
    
    /* Couleurs de statut */
    --success: #10B981;
    --warning: #F59E0B;
    --danger: #EF4444;
    --info: #3B82F6;
    
    /* Couleurs neutres */
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-400: #9CA3AF;
    --gray-500: #6B7280;
    --gray-600: #4B5563;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --gray-900: #111827;
    
    /* Backgrounds */
    --bg-main: #F5F7FA;
    --bg-card: #FFFFFF;
    --bg-sidebar: var(--primary);
    
    /* Texte */
    --text-primary: #1F2937;
    --text-secondary: #6B7280;
    --text-light: #9CA3AF;
    
    /* Ombres */
    --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-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Espacements - Réduits pour meilleur ajustement */
    --spacing-xs: 0.4rem;
    --spacing-sm: 0.65rem;
    --spacing-md: 0.85rem;
    --spacing-lg: 1.25rem;
    --spacing-xl: 1.75rem;
    --spacing-2xl: 2.5rem;
    
    /* Bordures */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
    
    /* Sidebar */
    --sidebar-width: 240px;
}

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

html {
    font-size: 14px; /* Réduit de 16px à 14px pour meilleur ajustement */
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-main);
    color: var(--text-primary);
    line-height: 1.5; /* Réduit de 1.6 */
    overflow-x: hidden;
}

/* === PAGE LOGIN === */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--secondary) 100%);
    position: relative;
    overflow: hidden;
    padding: 1rem;
}

.login-page::before {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    top: -250px;
    right: -250px;
    animation: float 20s infinite ease-in-out;
}

.login-page::after {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    bottom: -200px;
    left: -200px;
    animation: float 15s infinite ease-in-out reverse;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(30px, 30px) scale(1.05); }
}

/* === NEW CENTERED LOGIN CONTAINER === */
.login-container-centered {
    width: 100%;
    max-width: 480px;
    position: relative;
    z-index: 1;
    animation: slideUp 0.6s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* === LOGIN BRANDING AT TOP === */
.login-branding-top {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    color: white;
}

.brand-logo {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    margin: 0 auto var(--spacing-lg);
    border: 2px solid rgba(255, 255, 255, 0.25);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    animation: logoFloat 3s ease-in-out infinite;
}

@keyframes logoFloat {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-8px); }
}

.brand-logo i {
    color: white;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.brand-name {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.02em;
    color: white;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.brand-tagline {
    font-size: 1rem;
    opacity: 0.95;
    line-height: 1.4;
    font-weight: 300;
    color: rgba(255, 255, 255, 0.9);
}

/* === LOGIN CARD === */
.login-card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    padding: var(--spacing-xl);
}

/* === OLD LOGIN CONTAINER (kept for backward compatibility) === */
.login-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    width: 95%;
    max-width: 1000px;
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    position: relative;
    z-index: 1;
    animation: slideUp 0.6s ease-out;
}

.login-left {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    padding: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    color: white;
    position: relative;
    overflow: hidden;
}

.login-left::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><rect width="1" height="1" fill="rgba(255,255,255,0.03)"/></svg>');
    background-size: 20px 20px;
}

.login-branding {
    position: relative;
    z-index: 1;
}

.brand-icon {
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    margin-bottom: var(--spacing-md);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.login-branding h1 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    letter-spacing: -0.02em;
}

.tagline {
    font-size: 0.95rem;
    opacity: 0.9;
    line-height: 1.4;
    font-weight: 300;
}

.stats-preview {
    display: grid;
    gap: var(--spacing-md);
    position: relative;
    z-index: 1;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.stat-item i {
    font-size: 1.4rem;
    opacity: 0.9;
}

.stat-value {
    display: block;
    font-size: 1.4rem;
    font-weight: 700;
    font-family: 'Space Mono', monospace;
}

.stat-label {
    display: block;
    font-size: 0.8rem;
    opacity: 0.8;
}

.login-right {
    padding: var(--spacing-xl);
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-form-wrapper {
    width: 100%;
    max-width: 380px;
}

.login-header {
    margin-bottom: var(--spacing-lg);
}

.login-header h2 {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.login-header p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

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

.form-group label {
    font-weight: 500;
    font-size: 0.85rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.form-group label i {
    color: var(--text-light);
    font-size: 0.8rem;
}

.form-group input,
.form-group select,
.filter-select,
.search-input {
    padding: 0.75rem 0.9rem;
    border: 1.5px solid var(--gray-300);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-family: inherit;
    transition: all var(--transition-base);
    background: white;
}

.form-group input:focus,
.form-group select:focus,
.filter-select:focus,
.search-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-error {
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--danger);
    border-radius: var(--radius-md);
    color: var(--danger);
    font-size: 0.85rem;
    display: none;
}

.form-error.active {
    display: block;
    animation: shake 0.4s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-10px); }
    75% { transform: translateX(10px); }
}

.btn-login {
    padding: 0.9rem;
    background: var(--accent);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.btn-login::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-login:hover::before {
    width: 300px;
    height: 300px;
}

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

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

.login-footer {
    margin-top: var(--spacing-md);
    text-align: center;
}

.login-hint {
    font-size: 0.8rem;
    color: var(--text-secondary);
    padding: var(--spacing-sm);
    background: var(--gray-100);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
}

/* === LOGIN PAGE FOOTER === */
.login-page-footer {
    margin-top: var(--spacing-xl);
    text-align: center;
}

.footer-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.footer-stat-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: white;
    font-size: 0.85rem;
    font-weight: 500;
    transition: all var(--transition-base);
}

.footer-stat-item:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.footer-stat-item i {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* === APP CONTAINER === */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* === SIDEBAR === */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-sidebar);
    position: fixed;
    left: 0;
    top: 0;
    height: 100vh;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-lg);
    z-index: 100;
    overflow-y: auto;
}

.sidebar-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    color: white;
    font-size: 1.2rem;
    font-weight: 700;
}

.brand i {
    font-size: 1.5rem;
}

.sidebar-nav {
    flex: 1;
    padding: var(--spacing-md) 0;
    overflow-y: auto;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: 0.7rem var(--spacing-lg);
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: all var(--transition-fast);
    font-size: 0.9rem;
    font-weight: 500;
    margin: 0.15rem var(--spacing-sm);
    border-radius: var(--radius-md);
}

.nav-item i {
    font-size: 1.1rem;
    width: 1.3rem;
    text-align: center;
}

.nav-item:hover {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    transform: translateX(4px);
}

.nav-item.active {
    background: rgba(59, 130, 246, 0.2);
    color: white;
    border-left: 3px solid var(--accent);
}

.nav-divider {
    padding: 0.5rem var(--spacing-lg);
    margin-top: var(--spacing-md);
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.sidebar-footer {
    padding: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-logout {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 0.7rem;
    background: rgba(239, 68, 68, 0.15);
    color: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all var(--transition-base);
}

.btn-logout:hover {
    background: var(--danger);
    color: white;
    border-color: var(--danger);
}

/* === MAIN CONTENT === */
.main-content {
    margin-left: var(--sidebar-width);
    flex: 1;
    padding: var(--spacing-lg);
    min-height: 100vh;
    max-width: calc(100vw - var(--sidebar-width));
}

/* === PAGE HEADER === */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.header-left h1 {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.2rem;
}

.header-left p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

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

/* === BUTTONS === */
.btn-primary,
.btn-secondary,
.btn-action,
.btn-reset {
    padding: 0.65rem 1.1rem;
    border: none;
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
}

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

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--gray-200);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: var(--gray-300);
}

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

.btn-action:hover {
    background: var(--primary);
}

.btn-action.danger {
    background: var(--danger);
}

.btn-action.danger:hover {
    background: #DC2626;
}

.btn-reset {
    background: var(--gray-600);
    color: white;
}

.btn-reset:hover {
    background: var(--gray-700);
}

/* === FILTERS === */
.filters-section {
    background: white;
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--spacing-lg);
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-end;
    flex-wrap: wrap;
}

.filters-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--spacing-md);
    flex: 1;
}

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

.filter-group label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.filter-group label i {
    color: var(--accent);
    font-size: 0.85rem;
}

/* === STATS GRID === */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.stat-card {
    background: white;
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    display: flex;
    gap: var(--spacing-md);
    transition: all var(--transition-base);
}

.stat-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.stat-icon {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    color: white;
}

.stat-icon.followers { background: linear-gradient(135deg, #3B82F6, #2563EB); }
.stat-icon.budget { background: linear-gradient(135deg, #10B981, #059669); }
.stat-icon.cost { background: linear-gradient(135deg, #F59E0B, #D97706); }
.stat-icon.conversion { background: linear-gradient(135deg, #EC4899, #DB2777); }

.stat-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 0.2rem;
}

.stat-value {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text-primary);
    font-family: 'Space Mono', monospace;
    line-height: 1;
}

.stat-info {
    font-size: 0.75rem;
    color: var(--text-light);
    margin-top: 0.2rem;
}

/* === CHARTS === */
.charts-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.chart-card {
    background: white;
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.chart-card:hover {
    box-shadow: var(--shadow-lg);
}

.chart-card.full-width {
    grid-column: 1 / -1;
}

.chart-header {
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--gray-100);
}

.chart-header h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.chart-container {
    position: relative;
    height: 280px; /* Réduit de 300px */
}

/* === TABLES === */
.table-section {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--spacing-lg);
    overflow: hidden;
}

.table-header {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 2px solid var(--gray-100);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.table-header h2 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.table-controls {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.table-info {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.search-input {
    min-width: 200px;
}

.table-wrapper {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}

.data-table thead {
    background: var(--gray-50);
}

.data-table th {
    padding: 0.85rem;
    text-align: left;
    font-weight: 600;
    font-size: 0.8rem;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.03em;
    border-bottom: 2px solid var(--gray-200);
    white-space: nowrap;
    cursor: pointer;
    user-select: none;
}

.data-table th:hover {
    background: var(--gray-100);
}

.data-table th i {
    margin-left: var(--spacing-xs);
    color: var(--text-light);
    font-size: 0.75rem;
}

.data-table td {
    padding: 0.85rem;
    border-bottom: 1px solid var(--gray-200);
    color: var(--text-primary);
}

.data-table tbody tr {
    transition: background var(--transition-fast);
}

.data-table tbody tr:hover {
    background: var(--gray-50);
}

/* === PAGINATION === */
.pagination {
    padding: var(--spacing-md);
    display: flex;
    justify-content: center;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

.pagination button {
    padding: 0.45rem 0.85rem;
    border: 1.5px solid var(--gray-300);
    background: white;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-family: inherit;
    font-weight: 500;
    font-size: 0.85rem;
    transition: all var(--transition-fast);
}

.pagination button:hover:not(:disabled) {
    border-color: var(--accent);
    color: var(--accent);
}

.pagination button.active {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}

.pagination button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* === ADMIN === */
.admin-actions {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.admin-table .action-buttons {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

.btn-edit,
.btn-delete {
    padding: 0.35rem 0.7rem;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.8rem;
    transition: all var(--transition-fast);
    font-family: inherit;
    white-space: nowrap;
}

.btn-edit {
    background: var(--info);
    color: white;
}

.btn-edit:hover {
    background: #2563EB;
}

.btn-delete {
    background: var(--danger);
    color: white;
}

.btn-delete:hover {
    background: #DC2626;
}

/* === MODALS === */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.modal.active {
    display: flex;
    animation: fadeIn 0.3s ease;
}

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

.modal-content {
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    width: 95%;
    max-width: 550px;
    max-height: 90vh;
    overflow-y: auto;
    animation: modalSlide 0.4s ease;
}

@keyframes modalSlide {
    from {
        opacity: 0;
        transform: translateY(-50px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-content.confirm-modal {
    max-width: 420px;
}

.modal-header {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 2px solid var(--gray-100);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.modal-close {
    width: 32px;
    height: 32px;
    border: none;
    background: var(--gray-100);
    border-radius: 50%;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    color: var(--text-secondary);
}

.modal-close:hover {
    background: var(--gray-200);
    color: var(--text-primary);
}

.modal-body {
    padding: var(--spacing-lg);
}

.modal-footer {
    padding: var(--spacing-md) var(--spacing-lg);
    border-top: 2px solid var(--gray-100);
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

/* === FORMS === */
.data-form {
    padding: var(--spacing-lg);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.form-divider {
    margin: var(--spacing-md) 0;
    padding: var(--spacing-sm);
    background: var(--gray-100);
    border-radius: var(--radius-md);
    text-align: center;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
}

/* === LOADER === */
.loader {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(4px);
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.loader.active {
    display: flex;
}

.spinner {
    width: 55px;
    height: 55px;
    border: 4px solid var(--gray-200);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.loader p {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
}

/* === RESPONSIVE === */

/* Large desktop - Ajustements pour grands écrans */
@media (min-width: 1600px) {
    :root {
        font-size: 15px;
    }
    
    .charts-section {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .chart-card.full-width {
        grid-column: 1 / -1;
    }
}

/* Desktop normal - Optimisation 1200-1599px */
@media (max-width: 1599px) and (min-width: 1200px) {
    :root {
        font-size: 14px;
    }
    
    .charts-section {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Tablet landscape - 1024-1199px */
@media (max-width: 1199px) {
    :root {
        font-size: 13px;
        --sidebar-width: 220px;
    }
    
    .charts-section {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .filters-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Tablet portrait - 768-1023px */
@media (max-width: 1023px) {
    :root {
        font-size: 13px;
    }
    
    .login-container {
        grid-template-columns: 1fr;
    }
    
    .login-left {
        display: none;
    }
    
    .login-container-centered {
        max-width: 440px;
    }
    
    .brand-name {
        font-size: 1.75rem;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Mobile - 768px and below */
@media (max-width: 767px) {
    :root {
        --sidebar-width: 0;
        font-size: 13px;
    }
    
    .login-container-centered {
        max-width: 100%;
        padding: 0 var(--spacing-sm);
    }
    
    .brand-logo {
        width: 70px;
        height: 70px;
        font-size: 2rem;
    }
    
    .brand-name {
        font-size: 1.5rem;
    }
    
    .brand-tagline {
        font-size: 0.9rem;
    }
    
    .login-card {
        padding: var(--spacing-lg);
    }
    
    .footer-stats {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .footer-stat-item {
        width: 100%;
        justify-content: center;
    }
    
    .sidebar {
        transform: translateX(-100%);
        transition: transform var(--transition-base);
    }
    
    .sidebar.active {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
        padding: var(--spacing-sm);
        max-width: 100vw;
    }
    
    .page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }
    
    .header-left h1 {
        font-size: 1.5rem;
    }
    
    .filters-section {
        flex-direction: column;
        padding: var(--spacing-md);
    }
    
    .filters-grid {
        grid-template-columns: 1fr;
        width: 100%;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .charts-section {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .chart-container {
        height: 240px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .table-wrapper {
        font-size: 0.75rem;
    }
    
    .data-table th,
    .data-table td {
        padding: 0.6rem;
        font-size: 0.75rem;
    }
    
    .pagination {
        padding: var(--spacing-sm);
    }
    
    .pagination button {
        padding: 0.4rem 0.7rem;
        font-size: 0.75rem;
    }
    
    .admin-actions {
        flex-direction: column;
    }
    
    .btn-action,
    .btn-primary,
    .btn-secondary {
        width: 100%;
        justify-content: center;
    }
}

/* Extra small mobile - 480px and below */
@media (max-width: 480px) {
    :root {
        font-size: 12px;
    }
    
    .header-left h1 {
        font-size: 1.3rem;
    }
    
    .stat-value {
        font-size: 1.3rem;
    }
    
    .chart-container {
        height: 220px;
    }
    
    .modal-content {
        width: 98%;
        max-height: 95vh;
    }
}

/* === UTILITIES === */
.text-success { color: var(--success); }
.text-warning { color: var(--warning); }
.text-danger { color: var(--danger); }
.text-info { color: var(--info); }

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

::-webkit-scrollbar-track {
    background: var(--gray-100);
}

::-webkit-scrollbar-thumb {
    background: var(--gray-400);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gray-500);
}

/* ============================================================
   ADDITIONS v2 - Comments, User badges, Role badges, Chart hints
   ============================================================ */

/* Comments section */
.comments-section {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: 1.5rem;
    margin-top: 2rem;
}
.comments-section .section-header {
    margin-bottom: 1rem;
}
.comments-section .section-header h2 {
    font-size: 1.1rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: .5rem;
}
.comment-form-card {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    margin-bottom: 1rem;
}
.comment-textarea {
    flex: 1;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    padding: .75rem 1rem;
    font-family: inherit;
    font-size: .9rem;
    resize: vertical;
    min-height: 60px;
    transition: border-color .2s;
}
.comment-textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(59,130,246,.15);
}

/* Sidebar user badge */
.user-badge {
    display: flex;
    align-items: center;
    gap: .5rem;
    padding: .6rem 1rem;
    background: rgba(255,255,255,.08);
    border-radius: var(--radius-md);
    font-size: .8rem;
    color: rgba(255,255,255,.7);
    margin-bottom: .5rem;
}
.user-badge em {
    font-style: normal;
    opacity: .65;
}

/* Role badge in users table */
.role-badge {
    display: inline-block;
    padding: .2rem .6rem;
    border-radius: 999px;
    font-size: .75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .03em;
}
.role-badge.admin  { background: #dbeafe; color: #1d4ed8; }
.role-badge.viewer { background: #d1fae5; color: #065f46; }

/* Chart subtitle hint */
.chart-hint {
    display: block;
    color: var(--text-secondary);
    font-size: .78rem;
    margin-top: .2rem;
}