:root {
    --primary: #4361ee;
    --primary-dark: #3a56d4;
    --secondary: #7209b7;
    --success: #4cc9f0;
    --danger: #f72585;
    --warning: #f8961e;
    --info: #4895ef;
    --light: #f8f9fa;
    --dark: #212529;
    --gray: #6c757d;
    --gray-light: #e9ecef;
    --border-radius: 12px;
    --shadow: 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);
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: #f5f7fb;
    color: var(--dark);
    line-height: 1.6;
}

.container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar Styles */
.sidebar {
    width: 260px;
    background: linear-gradient(180deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    transition: var(--transition);
    position: fixed;
    height: 100vh;
    z-index: 100;
    box-shadow: var(--shadow-lg);
}

.sidebar-header {
    padding: 24px 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo {
    width: 40px;
    height: 40px;
    background: white;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    color: var(--primary);
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 700;
}

.sidebar-menu {
    padding: 20px 0;
}

.menu-item {
    padding: 14px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    transition: var(--transition);
    border-left: 4px solid transparent;
}

.menu-item:hover, .menu-item.active {
    background: rgba(255, 255, 255, 0.1);
    border-left-color: white;
}

.menu-item i {
    width: 20px;
    text-align: center;
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: 260px;
    transition: var(--transition);
}

.topbar {
    background: white;
    padding: 16px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 99;
}

.search-bar {
    display: flex;
    align-items: center;
    background: var(--gray-light);
    border-radius: 50px;
    padding: 8px 16px;
    width: 300px;
}

.search-bar input {
    background: transparent;
    border: none;
    outline: none;
    width: 100%;
    margin-left: 8px;
}

.user-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.language-switcher {
    display: flex;
    background: var(--gray-light);
    border-radius: 50px;
    overflow: hidden;
}

.lang-btn {
    padding: 6px 12px;
    border: none;
    background: transparent;
    cursor: pointer;
    transition: var(--transition);
}

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

.user-profile {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
}

.avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
}

/* Content Area */
.content {
    padding: 30px;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.page-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--dark);
}

.btn {
    padding: 10px 20px;
    border-radius: var(--border-radius);
    border: none;
    cursor: pointer;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

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

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

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

.btn-outline {
    background: transparent;
    border: 1px solid var(--primary);
    color: var(--primary);
}

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

/* Cards */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
    margin-bottom: 30px;
}

.card {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    padding: 24px;
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

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

.card-title {
    font-size: 1rem;
    color: var(--gray);
    font-weight: 600;
}

.card-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.bg-primary-light {
    background: rgba(67, 97, 238, 0.1);
    color: var(--primary);
}

.bg-success-light {
    background: rgba(76, 201, 240, 0.1);
    color: var(--success);
}

.bg-warning-light {
    background: rgba(248, 150, 30, 0.1);
    color: var(--warning);
}

.bg-danger-light {
    background: rgba(247, 37, 133, 0.1);
    color: var(--danger);
}

.card-value {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.card-footer {
    font-size: 0.875rem;
    color: var(--gray);
}

/* Tables */
.table-container {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.table-header {
    padding: 20px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--gray-light);
}

.table-title {
    font-size: 1.25rem;
    font-weight: 600;
}

.table-actions {
    display: flex;
    gap: 12px;
}

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

th, td {
    padding: 16px 24px;
    text-align: left;
    border-bottom: 1px solid var(--gray-light);
}

th {
    font-weight: 600;
    color: var(--gray);
    background: #f8fafc;
}

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

tr:hover td {
    background: #f8fafc;
}

.status-badge {
    padding: 6px 12px;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    display: inline-block;
}

.status-en-stock {
    background: rgba(76, 201, 240, 0.1);
    color: var(--success);
}

.status-en-usage {
    background: rgba(67, 97, 238, 0.1);
    color: var(--primary);
}

.status-sous-reparation {
    background: rgba(248, 150, 30, 0.1);
    color: var(--warning);
}

.status-reforme {
    background: rgba(247, 37, 133, 0.1);
    color: var(--danger);
}

/* Forms */
.form-container {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    padding: 24px;
    margin-bottom: 30px;
}

.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--dark);
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--gray-light);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.1);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

/* Login Page */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
}

.login-card {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 420px;
    padding: 40px;
}

.login-header {
    text-align: center;
    margin-bottom: 32px;
}

.login-logo {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 16px;
}

.login-title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.login-subtitle {
    color: var(--gray);
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-content {
    background: white;
    border-radius: var(--border-radius);
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
}

.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--gray-light);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    margin: 0;
    font-size: 1.25rem;
}

.close {
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--gray);
}

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

.modal-body {
    padding: 24px;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--gray-light);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

/* Responsive */
@media (max-width: 1024px) {
    .sidebar {
        width: 80px;
    }
    .sidebar .logo-text, .sidebar .menu-text {
        display: none;
    }
    .main-content {
        margin-left: 80px;
    }
}

@media (max-width: 768px) {
    .cards-grid {
        grid-template-columns: 1fr;
    }
    .form-row {
        grid-template-columns: 1fr;
    }
    .table-container {
        overflow-x: auto;
    }
    .topbar {
        flex-direction: column;
        gap: 16px;
        align-items: flex-start;
    }
    .search-bar {
        width: 100%;
    }
    .user-actions {
        width: 100%;
        justify-content: space-between;
    }
}

/* Animation */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in {
    animation: fadeIn 0.5s ease forwards;
}