:root {
    /* Palette Provençale - Tons naturels et chaleureux */
    --color-sand: #F5EFE6;
    --color-stone: #E8DCC4;
    --color-terracotta: #D4A574;
    --color-olive: #8B9174;
    --color-lavender: #9B8FA8;
    --color-limestone: #F9F6F1;
    --color-clay: #C9A88A;
    
    /* Neutrals modernes (Notion/Revolut style) */
    --color-bg-primary: #FFFFFF;
    --color-bg-secondary: #FAFAF9;
    --color-bg-tertiary: #F5F4F2;
    --color-text-primary: #2C2C2C;
    --color-text-secondary: #6B6B6B;
    --color-text-tertiary: #9B9B9B;
    --color-border: #E5E4E2;
    --color-divider: #EFEEEC;
    
    /* Status colors */
    --color-success: #7FA650;
    --color-warning: #D4A574;
    --color-error: #C87E73;
    --color-info: #8B9DB8;
    
    /* Service levels */
    --color-gold: #D4AF37;
    --color-platinum: #B4B8C5;
    --color-diamond: #B9E4F5;
    
    /* Espacements */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    
    /* Border radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    /* Shadows - doux et subtils */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.08);
    --shadow-xl: 0 8px 32px rgba(0, 0, 0, 0.10);
    
    /* Typographie */
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica', 'Arial', sans-serif;
    --font-size-xs: 11px;
    --font-size-sm: 13px;
    --font-size-base: 15px;
    --font-size-lg: 17px;
    --font-size-xl: 20px;
    --font-size-2xl: 24px;
    --font-size-3xl: 32px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
}

/* Reset et base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-sans);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-bg-secondary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Layout principal */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 260px;
    background: linear-gradient(180deg, var(--color-limestone) 0%, var(--color-sand) 100%);
    border-right: 1px solid var(--color-border);
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    overflow-y: auto;
    z-index: 100;
}

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

.logo {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-text-primary);
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

/* Bouton de fermeture de la sidebar (mobile uniquement) */
.sidebar-close-btn {
    display: none;
    background: none;
    border: none;
    color: var(--color-text-secondary);
    cursor: pointer;
    padding: 8px;
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
    min-width: 44px;
    min-height: 44px;
    align-items: center;
    justify-content: center;
}

.sidebar-close-btn:hover {
    background: rgba(0, 0, 0, 0.05);
    color: var(--color-text-primary);
}

.sidebar-close-btn:active {
    transform: scale(0.95);
}

.logo-icon {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--color-terracotta), var(--color-clay));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 18px;
}

.nav-menu {
    list-style: none;
    flex: 1;
}

.nav-item {
    margin-bottom: var(--spacing-xs);
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--color-text-secondary);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    font-size: var(--font-size-sm);
}

.nav-link:hover {
    background-color: rgba(212, 165, 116, 0.1);
    color: var(--color-text-primary);
}

.nav-link.active {
    background-color: var(--color-bg-primary);
    color: var(--color-terracotta);
    font-weight: 500;
    box-shadow: var(--shadow-sm);
}

.nav-icon {
    width: 18px;
    height: 18px;
    opacity: 0.7;
}

.nav-link.active .nav-icon {
    opacity: 1;
}

/* Main content */
.main-content {
    flex: 1;
    margin-left: 260px;
    padding: var(--spacing-xl);
    max-width: calc(100% - 260px);
}

.page-header {
    margin-bottom: var(--spacing-xl);
}

.page-title {
    font-size: var(--font-size-3xl);
    font-weight: 600;
    color: var(--color-text-primary);
    letter-spacing: -1px;
    margin-bottom: var(--spacing-xs);
}

.page-subtitle {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
}

/* Cards - style Notion */
.card {
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-stone);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-divider);
}

.card-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-text-primary);
}

.card-body {
    color: var(--color-text-secondary);
}

/* Buttons - style Revolut */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-sm);
    font-weight: 500;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-terracotta), var(--color-clay));
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
    opacity: 0.95;
}

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

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

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

.btn-ghost:hover {
    background: var(--color-bg-tertiary);
    color: var(--color-text-primary);
}

.btn-sm {
    padding: 6px var(--spacing-md);
    font-size: var(--font-size-xs);
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-base);
}

/* Forms */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-xs);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-base);
    font-family: var(--font-sans);
    color: var(--color-text-primary);
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-terracotta);
    box-shadow: 0 0 0 3px rgba(212, 165, 116, 0.1);
}

.form-textarea {
    resize: vertical;
    min-height: 100px;
}

/* Tables */
.table-container {
    overflow-x: auto;
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table thead {
    background: var(--color-bg-tertiary);
    border-bottom: 1px solid var(--color-border);
}

.table th {
    padding: var(--spacing-md);
    text-align: left;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.table td {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--color-divider);
    font-size: var(--font-size-sm);
}

.table tbody tr:hover {
    background: var(--color-bg-tertiary);
}

.table tbody tr:last-child td {
    border-bottom: none;
}

/* Badges - Service levels */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px var(--spacing-sm);
    font-size: var(--font-size-xs);
    font-weight: 500;
    border-radius: var(--radius-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-gold {
    background: rgba(212, 175, 55, 0.15);
    color: var(--color-gold);
}

.badge-platinum {
    background: rgba(180, 184, 197, 0.15);
    color: var(--color-platinum);
}

.badge-diamond {
    background: rgba(185, 228, 245, 0.15);
    color: #5BA3C5;
}

/* Status badges */
.badge-success {
    background: rgba(127, 166, 80, 0.15);
    color: var(--color-success);
}

.badge-warning {
    background: rgba(212, 165, 116, 0.15);
    color: var(--color-warning);
}

.badge-error {
    background: rgba(200, 126, 115, 0.15);
    color: var(--color-error);
}

.badge-info {
    background: rgba(139, 157, 184, 0.15);
    color: var(--color-info);
}

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

.stat-card {
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xs);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-value {
    font-size: var(--font-size-3xl);
    font-weight: 600;
    color: var(--color-text-primary);
    letter-spacing: -1px;
}

.stat-change {
    font-size: var(--font-size-xs);
    margin-top: var(--spacing-xs);
}

.stat-change.positive {
    color: var(--color-success);
}

.stat-change.negative {
    color: var(--color-error);
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(4px);
}

.modal {
    background: var(--color-bg-primary);
    border-radius: var(--radius-xl);
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
}

.modal-header {
    padding: var(--spacing-xl);
    border-bottom: 1px solid var(--color-divider);
}

.modal-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
}

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

.modal-footer {
    padding: var(--spacing-xl);
    border-top: 1px solid var(--color-divider);
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-md);
}

/* Utilities */
.text-center {
    text-align: center;
}

.text-right {
    text-align: right;
}

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }

.flex {
    display: flex;
}

.flex-col {
    flex-direction: column;
}

.items-center {
    align-items: center;
}

.justify-between {
    justify-content: space-between;
}

.gap-2 {
    gap: var(--spacing-sm);
}

.gap-3 {
    gap: var(--spacing-md);
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn var(--transition-base);
}

/* Mobile Menu Toggle Button */
.mobile-menu-toggle {
    display: none;
    position: fixed;
    top: 20px;
    left: 20px;
    z-index: 200;
    background: var(--color-terracotta);
    color: white;
    border: none;
    padding: 12px;
    border-radius: var(--radius-lg);
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    transition: all 0.3s ease;
    min-width: 44px;
    min-height: 44px;
    align-items: center;
    justify-content: center;
}

.mobile-menu-toggle:hover {
    background: var(--color-brown);
    transform: scale(1.05);
}

.mobile-menu-toggle:active {
    transform: scale(0.95);
}

/* Sidebar Overlay */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 99;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.sidebar-overlay.active {
    display: block;
    opacity: 1;
}

/* Responsive */
@media (max-width: 1200px) {
    .sidebar {
        width: 240px;
    }

    .main-content {
        margin-left: 240px;
        max-width: calc(100% - 240px);
    }
}

@media (max-width: 1024px) {
    .mobile-menu-toggle {
        display: flex;
        z-index: 300; /* Au-dessus de la sidebar pour rester cliquable */
    }

    /* Bouton de fermeture visible sur mobile */
    .sidebar-close-btn {
        display: flex;
    }

    /* Sidebar en mode mobile prend toute la largeur */
    .sidebar {
        width: 100%; /* Pleine largeur sur mobile */
        max-width: 100%;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        box-shadow: 4px 0 20px rgba(0, 0, 0, 0.3);
        z-index: 250; /* En dessous du bouton toggle */
    }

    .sidebar.mobile-open {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
        max-width: 100%;
        padding: var(--spacing-lg);
        padding-top: calc(var(--spacing-lg) + 64px);
    }

    .page-title {
        font-size: 1.75rem;
    }

    .stats-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
}

@media (max-width: 768px) {
    .main-content {
        padding: var(--spacing-md);
        padding-top: calc(var(--spacing-md) + 64px);
    }

    .page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-md);
    }

    .page-header-actions {
        width: 100%;
        flex-direction: column;
    }

    .page-header-actions .btn {
        width: 100%;
        justify-content: center;
    }

    .stats-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

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

@media (max-width: 480px) {
    .main-content {
        padding: var(--spacing-sm);
        padding-top: calc(var(--spacing-sm) + 64px);
    }

    .page-title {
        font-size: 1.25rem;
    }

    .btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-sm);
    }

    .btn-sm {
        padding: 6px 10px;
        font-size: var(--font-size-xs);
    }

    .stats-grid {
        gap: var(--spacing-sm);
    }
}