/* --- Professional Fleet Management UI - style.css --- */
/* --- By Gemini (v2 - Layout Fix) --- */

/* 1. Root Variables & Basic Setup */
:root {
    --primary-color: #0d6efd; /* Professional Blue */
    --primary-color-dark: #0b5ed7;
    --secondary-color: #6c757d; /* Muted Gray */
    --success-color: #198754;  /* Green */
    --danger-color: #dc3545;   /* Red */
    --warning-color: #ffc107;  /* Yellow */
    --info-color: #0dcaf0;     /* Teal */
    --light-color: #f8f9fa;
    --dark-color: #212529;
    --font-family: 'Poppins', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --body-bg: #f4f7f9; /* Light Grayish Blue */
    --sidebar-bg: #ffffff;
    --header-bg: #ffffff;
    --card-bg: #ffffff;
    --text-color: #495057;
    --heading-color: #343a40;
    --border-color: #dee2e6;
    --border-radius: 0.375rem;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
}

* {
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    background-color: var(--body-bg);
    color: var(--text-color);
    margin: 0;
    line-height: 1.6;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--heading-color);
    margin-top: 0;
}

/* 2. Layout Structure (App Container) */
.app-container {
    display: flex;
    min-height: 100vh;
}

.main-content-wrapper {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.main-content {
    flex-grow: 1;
    padding: 1.5rem;
    transition: margin-left 0.3s ease;
}

/* 3. Header */
.top-header {
    background-color: var(--header-bg);
    box-shadow: var(--shadow-sm);
    padding: 0.75rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    min-height: 60px;
}

.header-title h1 {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0;
}

.btn-user {
    background: none;
    border: none;
    color: var(--text-color);
    cursor: pointer;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    transition: background-color 0.2s;
    display: flex;
    align-items: center;
}

.btn-user:hover {
    background-color: var(--light-color);
}

.btn-user span {
    margin-left: 0.5rem;
    font-weight: 500;
}

.user-menu-container {
    position: relative;
    display: inline-block;
}

.user-menu-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    z-index: 200;
    min-width: 180px;
    margin-top: 0.5rem;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity 0.2s, transform 0.2s;
    padding: 0.5rem 0;
}

.user-menu-dropdown.is-open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.user-menu-dropdown a {
    display: block;
    padding: 0.5rem 1rem;
    text-decoration: none;
    color: var(--text-color);
    transition: background-color 0.2s;
    font-size: 0.9rem;
}

.user-menu-dropdown a:hover {
    background-color: var(--light-color);
}

.user-menu-dropdown a i {
    margin-right: 0.75rem;
    width: 1rem;
}

.dropdown-divider {
    height: 1px;
    background-color: var(--border-color);
    margin: 0.25rem 0;
}


/* 4. Sidebar & Navigation */
.sidebar {
    width: 250px;
    flex-shrink: 0;
    background-color: var(--sidebar-bg);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
    transition: transform 0.3s ease;
}

.sidebar-header {
    display: flex;
    align-items: center;
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-header img {
    height: 35px;
    margin-right: 0.75rem;
}

.sidebar-header h1 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary-color);
    margin: 0;
}

.sidebar-nav {
    padding: 1rem 0;
}

.sidebar-nav h2 {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--secondary-color);
    text-transform: uppercase;
    padding: 0.5rem 1.5rem;
    margin: 1rem 0 0.5rem 0;
}

.sidebar-nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sidebar-nav li {
    position: relative;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    padding: 0.75rem 1.5rem;
    color: var(--text-color);
    text-decoration: none;
    transition: background-color 0.2s, color 0.2s;
    font-size: 1rem;
}

.sidebar-nav a:hover,
.sidebar-nav a.active {
    background-color: var(--primary-color);
    color: var(--sidebar-bg);
}

.sidebar-nav a i {
    font-size: 1.1rem;
    width: 25px;
    margin-right: 0.75rem;
    text-align: center;
}

.sidebar-nav a.active i {
    color: var(--sidebar-bg);
}

.sidebar-nav .badge {
    background-color: var(--danger-color);
    color: white;
    font-size: 0.75rem;
    padding: 0.2rem 0.5rem;
    border-radius: 0.75rem;
    margin-left: auto;
}

/* --- ACCORDÉON (CRM, Stock, etc.) --- */

/* Style pour l'icône de flèche dans les éléments déroulants */
.sidebar-nav .submenu-arrow {
    margin-left: auto; /* Pousse la flèche à droite */
    transition: transform 0.3s ease;
    font-size: 0.8rem;
    color: var(--secondary-color);
}

/* Couleur de la flèche par défaut (si non active) */
.sidebar-nav a:not(.active) .submenu-arrow {
    color: var(--secondary-color); 
}

/* Couleur de la flèche si le lien principal est actif */
.sidebar-nav a.active .submenu-arrow {
    color: var(--sidebar-bg);
}

/* Rotation de la flèche lorsque le sous-menu est ouvert */
.sidebar-nav .has-submenu.is-open .submenu-arrow {
    transform: rotate(90deg);
}

/* Styles du sous-menu (Liste UL) */
.submenu {
    list-style: none;
    padding: 0;
    margin: 0;
    
    /* Le secret de l'accordéon: hauteur nulle par défaut */
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease-out, padding 0.3s ease-in-out;
    background-color: #f8f8f8; /* Léger fond pour distinguer le sous-menu */
    border-top: 1px solid var(--border-color);
}

/* État ouvert du sous-menu */
.has-submenu.is-open > .submenu {
    /* Hauteur arbitrairement grande pour permettre le déploiement */
    max-height: 1000px; 
    padding: 0.5rem 0; 
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.02);
}

/* Styles des liens dans le sous-menu */
.submenu li a {
    display: flex;
    align-items: center;
    padding: 0.4rem 1.5rem 0.4rem 2.5rem; /* Indentation plus forte */
    font-size: 0.9rem;
    color: var(--text-color);
    /* Retirer l'état actif hérité du parent */
    background-color: transparent !important; 
}

.submenu li a:hover {
    color: var(--primary-color);
    background-color: var(--light-color);
}

/* Style spécifique pour le lien actif DANS le sous-menu */
.submenu li a.active {
    color: var(--primary-color);
    background-color: var(--light-color) !important;
    font-weight: 600;
}

/* Icone pour les sous-éléments */
.submenu li a .sub-icon {
    font-size: 0.85rem;
    width: 20px;
    margin-right: 0.5rem;
    opacity: 0.7;
    color: var(--text-color);
}

.submenu li a.active .sub-icon {
    color: var(--primary-color);
    opacity: 1;
}

/* Séparateur pour les groupes de sous-menus */
.submenu .dropdown-divider {
    height: 1px;
    background-color: var(--border-color);
    margin: 0.5rem 1rem;
}

/* 5. Footer */
.app-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border-color);
    text-align: center;
    font-size: 0.85rem;
    color: var(--secondary-color);
    margin-top: auto; /* Pousse le footer vers le bas */
}

/* 6. Page Structure Components */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

.page-title-group {
    /* Utiliser ce groupe pour un titre et un sous-titre */
}

.page-header h1 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.page-header .subtitle {
    color: var(--secondary-color);
    font-size: 0.95rem;
    margin: 0;
}

.page-actions {
    display: flex;
    gap: 0.75rem;
}


/* 7. Cards & Grid */
.card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    margin-bottom: 1.5rem;
}

.card-header {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}

.card-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin: 0;
}

.card-subtitle {
    font-size: 0.85rem;
    color: var(--secondary-color);
}

.card-body {
    padding: 1.5rem;
}

.card-body.no-padding {
    padding: 0;
}

.card-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border-color);
    font-size: 0.9rem;
    display: flex;
    justify-content: flex-end;
    align-items: center;
}

.grid-2, .grid-2-3, .grid-3 {
    display: grid;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2-3 { grid-template-columns: 2fr 1fr; }

.full-height {
    height: 100%;
}

/* 8. KPI Cards */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.kpi-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    box-shadow: var(--shadow-sm);
}

.icon-box {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: white;
}

.icon-box.primary { background-color: var(--primary-color); }
.icon-box.success { background-color: var(--success-color); }
.icon-box.warning { background-color: var(--warning-color); }
.icon-box.danger { background-color: var(--danger-color); }
.icon-box.info { background-color: var(--info-color); }

.kpi-info {
    display: flex;
    flex-direction: column;
}

.kpi-label {
    font-size: 0.85rem;
    color: var(--secondary-color);
    white-space: nowrap;
}

.kpi-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--heading-color);
}

.kpi-trend {
    font-size: 0.75rem;
    font-weight: 600;
}

.kpi-trend.success { color: var(--success-color); }
.kpi-trend.danger { color: var(--danger-color); }
.kpi-trend.info { color: var(--info-color); }
.kpi-trend.primary { color: var(--primary-color); }

/* 9. Data Table */
.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.data-table th, .data-table td {
    padding: 1rem 1.5rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.data-table thead th {
    background-color: var(--light-color);
    color: var(--heading-color);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.8rem;
    border-top: 1px solid var(--border-color);
}

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

.data-table tbody tr:hover {
    background-color: var(--light-color);
}

/* 10. Forms */
.form-group {
    margin-bottom: 1rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--heading-color);
}

.form-control, .form-select {
    width: 100%;
    padding: 0.6rem 0.75rem;
    font-size: 1rem;
    line-height: 1.5;
    color: var(--text-color);
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    outline: 0;
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
}

.form-control.is-invalid {
    border-color: var(--danger-color);
}

/* 11. Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.6rem 1.2rem;
    font-size: 0.95rem;
    font-weight: 600;
    line-height: 1.5;
    border-radius: var(--border-radius);
    text-decoration: none;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all 0.15s ease-in-out;
}

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

.btn-primary:hover {
    background-color: var(--primary-color-dark);
    border-color: var(--primary-color-dark);
}

.btn-secondary {
    color: var(--dark-color);
    background-color: var(--light-color);
    border-color: var(--secondary-color);
}

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

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

.btn-danger:hover {
    background-color: #bd2130;
    border-color: #bd2130;
}

.btn i, .btn-icon i {
    margin-right: 0.5rem;
}

.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: 50%;
    background: none;
    border: none;
    color: var(--secondary-color);
    font-size: 1rem;
    cursor: pointer;
    transition: background-color 0.2s;
}

.btn-icon:hover {
    background-color: var(--light-color);
    color: var(--heading-color);
}

/* 12. Utility Classes */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-danger { color: var(--danger-color) !important; }
.text-success { color: var(--success-color) !important; }
.text-warning { color: var(--warning-color) !important; }
.text-primary { color: var(--primary-color) !important; }
.link-action {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.alert {
    padding: 1rem 1.5rem;
    margin-bottom: 1rem;
    border-radius: var(--border-radius);
    border: 1px solid transparent;
}

.alert-success {
    background-color: #d1e7dd;
    color: #0f5132;
    border-color: #badbcc;
}

.alert-danger {
    background-color: #f8d7da;
    color: #842029;
    border-color: #f5c2c7;
}

/* 13. Mobile Responsiveness */
@media (max-width: 992px) {
    .sidebar {
        position: fixed;
        left: 0;
        transform: translateX(-100%);
        box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
        z-index: 1000;
        /* Rendre la sidebar visible en mode mobile */
        height: 100vh;
    }
    
    .sidebar.is-open {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
        padding: 1rem;
    }
    
    .top-header {
        padding: 0.5rem 1rem;
    }

    .grid-2, .grid-2-3, .grid-3 {
        grid-template-columns: 1fr;
    }

    .page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
}