/* ============================================
   VARIABLES CSS
   ============================================ */
:root {
    --color-black: #000000;
    --color-white: #FFFFFF;
    --color-gray-light: #F5F5F5;
    --color-gray-medium: #E5E5E5;
    --color-gray-dark: #333333;
    
    --font-family: 'Inter', system-ui, -apple-system, sans-serif;
    --transition: all 0.2s ease;
    --shadow: 0 2px 4px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 4px 8px rgba(0, 0, 0, 0.12);
    --border-radius: 8px;
    --border-width: 1px;
}

/* ============================================
   RESET & BASE
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    background-color: var(--color-gray-light);
    color: var(--color-black);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

.main-wrapper {
    flex: 1;
    display: flex;
    flex-direction: column;
    margin-left: 260px;
    transition: margin-left 0.3s ease;
}

/* ============================================
   SIDEBAR
   ============================================ */
.sidebar {
    width: 260px;
    background-color: #283046;
    color: var(--color-white);
    position: fixed;
    height: 100vh;
    overflow-y: auto;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease;
}

.sidebar-header {
    padding: 24px 20px;
    border-bottom: var(--border-width) solid rgba(255, 255, 255, 0.1);
}

.sidebar-header h2 {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.sidebar-menu {
    flex: 1;
    padding: 16px 0;
    overflow-y: auto;
}

.sidebar-section {
    margin-bottom: 8px;
}

.sidebar-section-title {
    padding: 12px 20px 8px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: rgba(255, 255, 255, 0.6);
}

.sidebar-menu-item {
    display: flex;
    align-items: center;
    padding: 12px 20px;
    color: var(--color-white);
    text-decoration: none;
    transition: var(--transition);
    position: relative;
}

.sidebar-menu-item:hover {
    background-color: rgba(0, 0, 0, 0.2);
}

.sidebar-menu-item.active {
    background-color: rgba(0, 0, 0, 0.3);
    border-left: 3px solid var(--color-white);
}

.sidebar-menu-item-icon {
    width: 20px;
    margin-right: 12px;
    font-size: 16px;
    text-align: center;
}

.sidebar-menu-item-text {
    flex: 1;
    font-size: 14px;
    font-weight: 500;
}

.sidebar-menu-item-badge {
    background-color: rgba(0, 0, 0, 0.3);
    color: var(--color-white);
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 10px;
    font-weight: 600;
    margin-left: 8px;
}

.sidebar-footer {
    padding: 20px;
    border-top: var(--border-width) solid rgba(255, 255, 255, 0.1);
    font-size: 11px;
    color: rgba(255, 255, 255, 0.7);
    text-align: center;
}

/* ============================================
   NAVBAR
   ============================================ */
.navbar {
    background-color: var(--color-white);
    border-bottom: var(--border-width) solid var(--color-gray-medium);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar-content {
    padding: 12px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
}

.navbar-left {
    display: flex;
    align-items: center;
    gap: 20px;
    flex: 1;
}

.navbar-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 20px;
    cursor: pointer;
    color: var(--color-black);
    padding: 8px;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.navbar-toggle:hover {
    background-color: var(--color-gray-light);
}

.search-bar {
    flex: 1;
    max-width: 500px;
    position: relative;
}

.search-bar input {
    width: 100%;
    padding: 10px 15px 10px 40px;
    border: var(--border-width) solid var(--color-gray-medium);
    border-radius: var(--border-radius);
    font-size: 14px;
    background-color: var(--color-gray-light);
    transition: var(--transition);
    font-family: var(--font-family);
}

.search-bar input:focus {
    outline: none;
    border-color: var(--color-black);
    background-color: var(--color-white);
    box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.05);
}

.search-icon {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-gray-dark);
    font-size: 16px;
}

.navbar-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.navbar-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background-color: var(--color-gray-light);
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    border: var(--border-width) solid transparent;
}

.navbar-icon:hover {
    background-color: var(--color-gray-medium);
}

.notification-badge {
    position: absolute;
    top: -2px;
    right: -2px;
    background-color: var(--color-black);
    color: var(--color-white);
    border-radius: 50%;
    width: 18px;
    height: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    font-weight: 600;
    border: 2px solid var(--color-white);
}

.notification-dropdown {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    background-color: var(--color-white);
    border: var(--border-width) solid var(--color-gray-medium);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-hover);
    min-width: 320px;
    max-height: 400px;
    overflow-y: auto;
    display: none;
    z-index: 1000;
}

.notification-dropdown.show {
    display: block;
}

.notification-item {
    padding: 12px 16px;
    border-bottom: var(--border-width) solid var(--color-gray-light);
    cursor: pointer;
    transition: var(--transition);
}

.notification-item:hover {
    background-color: var(--color-gray-light);
}

.notification-item.unread {
    background-color: var(--color-gray-light);
    font-weight: 500;
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    padding: 6px 12px;
    border-radius: var(--border-radius);
    transition: var(--transition);
    margin-left: 8px;
}

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

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--color-black);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-weight: 600;
    font-size: 14px;
}

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

.user-name {
    font-weight: 600;
    font-size: 14px;
    color: var(--color-black);
}

.user-role {
    font-size: 12px;
    color: var(--color-gray-dark);
}

/* ============================================
   TOP MENU
   ============================================ */
.top-menu {
    background-color: var(--color-gray-light);
    border-bottom: var(--border-width) solid var(--color-gray-medium);
    padding: 0 30px;
    display: flex;
    align-items: center;
    gap: 30px;
    overflow-x: auto;
}

.top-menu-item {
    padding: 12px 0;
    color: var(--color-gray-dark);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    border-bottom: 2px solid transparent;
    transition: var(--transition);
    white-space: nowrap;
}

.top-menu-item:hover {
    color: var(--color-black);
}

.top-menu-item.active {
    color: var(--color-black);
    border-bottom-color: var(--color-black);
}

/* ============================================
   CONTENT AREA
   ============================================ */
.content {
    padding: 30px;
    flex: 1;
}

.page-header {
    margin-bottom: 24px;
}

.page-title {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--color-black);
}

.breadcrumb {
    font-size: 14px;
    color: var(--color-gray-dark);
}

.breadcrumb a {
    color: var(--color-gray-dark);
    text-decoration: none;
}

.breadcrumb a:hover {
    color: var(--color-black);
}

/* ============================================
   CARDS
   ============================================ */
.card {
    background-color: var(--color-white);
    border-radius: var(--border-radius);
    padding: 24px;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
    border: var(--border-width) solid var(--color-gray-medium);
}

.stat-card {
    background-color: var(--color-white);
    border-radius: var(--border-radius);
    padding: 24px;
    box-shadow: var(--shadow);
    border: var(--border-width) solid var(--color-gray-medium);
    transition: var(--transition);
}

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

.stat-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.stat-card-title {
    font-size: 13px;
    color: var(--color-gray-dark);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-card-icon {
    font-size: 24px;
    opacity: 0.6;
}

.stat-card-value {
    font-size: 32px;
    font-weight: 700;
    color: var(--color-black);
    margin-bottom: 8px;
}

.stat-card-change {
    font-size: 13px;
    display: flex;
    align-items: center;
    gap: 4px;
    color: var(--color-gray-dark);
}

/* ============================================
   TABLES
   ============================================ */
.table-wrapper {
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--color-white);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.table th,
.table td {
    padding: 16px 12px;
    text-align: left;
    border-bottom: var(--border-width) solid var(--color-gray-medium);
}

.table th {
    background-color: var(--color-gray-light);
    font-weight: 600;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--color-gray-dark);
    border-bottom: 2px solid var(--color-gray-medium);
}

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

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

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

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
    font-family: var(--font-family);
    border: var(--border-width) solid transparent;
}

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

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

.btn-secondary {
    background-color: var(--color-white);
    color: var(--color-black);
    border-color: var(--color-gray-medium);
}

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

.btn-icon {
    padding: 8px;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ============================================
   FORMS
   ============================================ */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    font-size: 14px;
    color: var(--color-black);
}

.form-control {
    width: 100%;
    padding: 10px 15px;
    border: var(--border-width) solid var(--color-gray-medium);
    border-radius: var(--border-radius);
    font-size: 14px;
    font-family: var(--font-family);
    background-color: var(--color-white);
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-black);
    box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.05);
}

.form-control::placeholder {
    color: var(--color-gray-dark);
    opacity: 0.6;
}

select.form-control {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23333' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 40px;
}

/* ============================================
   BADGES
   ============================================ */
.badge {
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 11px;
    font-weight: 600;
    display: inline-block;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    line-height: 1;
}

.badge-dark {
    background-color: var(--color-gray-dark);
    color: var(--color-white);
}

.badge-light {
    background-color: var(--color-gray-medium);
    color: var(--color-black);
}

/* Badges pour les statuts des tâches - Style Bootstrap */
.badge-en_attente {
    background-color: #ffc107;
    color: #000000;
}

.badge-encours {
    background-color: #0dcaf0;
    color: #000000;
}

.badge-termine {
    background-color: #198754;
    color: #ffffff;
}

.badge-valide {
    background-color: #20c997;
    color: #ffffff;
}

.badge-non_valide {
    background-color: #dc3545;
    color: #ffffff;
}

/* ============================================
   TOASTER / TOAST NOTIFICATIONS
   ============================================ */
#toaster-container {
    position: fixed;
    top: 80px;
    right: 20px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-width: 400px;
}

.toast {
    background-color: var(--color-white);
    border: var(--border-width) solid var(--color-gray-medium);
    border-radius: var(--border-radius);
    padding: 16px 20px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    min-width: 300px;
    opacity: 0;
    transform: translateX(400px);
    transition: all 0.3s ease;
}

.toast.show {
    opacity: 1;
    transform: translateX(0);
}

.toast-success {
    border-left: 4px solid #198754;
}

.toast-error {
    border-left: 4px solid #dc3545;
}

.toast-content {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 1;
}

.toast-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.toast-success .toast-icon {
    color: #198754;
}

.toast-error .toast-icon {
    color: #dc3545;
}

.toast-message {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-black);
    line-height: 1.5;
}

.toast-close {
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-gray-dark);
    transition: var(--transition);
    flex-shrink: 0;
}

.toast-close:hover {
    color: var(--color-black);
}

@media (max-width: 768px) {
    #toaster-container {
        right: 10px;
        left: 10px;
        max-width: calc(100% - 20px);
    }
    
    .toast {
        min-width: auto;
        width: 100%;
    }
}

/* ============================================
   PROGRESS BAR
   ============================================ */
.progress {
    width: 100%;
    height: 8px;
    background-color: var(--color-gray-medium);
    border-radius: 4px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background-color: var(--color-gray-dark);
    transition: width 0.3s ease;
}

/* ============================================
   MODAL
   ============================================ */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.modal-overlay.show {
    display: flex;
}

.modal {
    background-color: var(--color-white);
    border-radius: var(--border-radius);
    padding: 24px;
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-hover);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px;
    border-bottom: var(--border-width) solid var(--color-gray-medium);
    background-color: var(--color-white);
    position: sticky;
    top: 0;
    z-index: 10;
}

.modal-title {
    font-size: 20px;
    font-weight: 700;
}

.modal-close {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--color-gray-dark);
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.modal-close:hover {
    background-color: var(--color-gray-light);
    color: var(--color-black);
}

.modal-body {
    padding: 24px;
    flex: 1;
    overflow-y: auto;
}

.modal-footer {
    padding: 20px 24px;
    border-top: var(--border-width) solid var(--color-gray-medium);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    background-color: var(--color-white);
    position: sticky;
    bottom: 0;
}

@media (max-width: 768px) {
    .modal {
        width: 100vw;
        max-width: 100vw;
        border-radius: 0;
    }
    
    .modal-overlay {
        justify-content: center;
    }
}

/* ============================================
   UTILITIES
   ============================================ */
.text-center {
    text-align: center;
}

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }

.flex {
    display: flex;
}

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

.gap-1 { gap: 8px; }
.gap-2 { gap: 16px; }
.gap-3 { gap: 24px; }

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.show {
        transform: translateX(0);
    }
    
    .main-wrapper {
        margin-left: 0;
    }
    
    .navbar-toggle {
        display: block;
    }
    
    .search-bar {
        max-width: none;
    }
    
    .content {
        padding: 20px;
    }
    
    .stat-card {
        margin-bottom: 16px;
    }
    
    .table-wrapper {
        overflow-x: auto;
    }
    
    .user-info {
        display: none;
    }
}

@media (max-width: 480px) {
    .navbar-content {
        padding: 12px 16px;
    }
    
    .content {
        padding: 16px;
    }
    
    .card {
        padding: 16px;
    }
}