:root {
    --primary: #f97316; /* Orange-500 */
    --primary-hover: #ea580c; /* Orange-600 */
    --primary-light: #ffedd5; /* Orange-100 */
    --white: #ffffff;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--gray-50);
    color: var(--gray-800);
    line-height: 1.5;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: var(--primary-hover);
}

/* Auth Layout */
.auth-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: url('/fond.png') center/cover no-repeat, linear-gradient(135deg, var(--white) 0%, var(--primary-light) 100%);
    padding: 1rem;
    position: relative;
}

.auth-container::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0, 0, 0, 0.2); /* Subtle dark overlay for contrast */
    z-index: 0;
}

.auth-card {
    position: relative;
    z-index: 1;
    background: var(--white);
    padding: 2.5rem;
    border-radius: 1rem;
    box-shadow: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    width: 100%;
    max-width: 400px;
}

.auth-logos {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.auth-logos img {
    height: 80px;
    object-fit: contain;
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--gray-700);
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--gray-200);
    border-radius: 0.5rem;
    background-color: var(--white);
    color: var(--gray-900);
    transition: all 0.2s;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(249, 115, 22, 0.1);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
    text-align: center;
}

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

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

.btn-block {
    width: 100%;
}

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

.sidebar {
    width: 260px;
    background-color: var(--white);
    border-right: 1px solid var(--gray-200);
    display: flex;
    flex-direction: column;
}

.sidebar-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
}

.sidebar-header img {
    height: 60px;
}

.sidebar-nav {
    padding: 1.5rem 1rem;
    flex: 1;
}

.sidebar-footer {
    padding: 1.5rem;
    border-top: 1px solid var(--gray-200);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    margin-top: auto;
}

.sidebar-footer img {
    width: 140px;
    height: 80px;
    object-fit: contain;
}

.nav-item {
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
    color: var(--gray-700);
    border-radius: 0.5rem;
    margin-bottom: 0.5rem;
    transition: all 0.2s;
}

.nav-item:hover, .nav-item.active {
    background-color: var(--primary-light);
    color: var(--primary);
}

.nav-item i {
    margin-right: 0.75rem;
    width: 20px;
    text-align: center;
}

.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.topbar {
    background-color: var(--white);
    border-bottom: 1px solid var(--gray-200);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.page-content {
    padding: 2rem;
    flex: 1;
    overflow-y: auto;
}

/* Cards */
.card {
    background-color: var(--white);
    border-radius: 0.75rem;
    box-shadow: var(--shadow-sm);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    border: 1px solid var(--gray-200);
}

/* Alerts */
.alert {
    padding: 1rem;
    border-radius: 0.5rem;
    margin-bottom: 1.5rem;
}

.alert-error {
    background-color: #fee2e2;
    color: #991b1b;
    border: 1px solid #fca5a5;
}

.alert-success {
    background-color: #dcfce3;
    color: #166534;
    border: 1px solid #86efac;
}

/* Tables */
.table-container {
    overflow-x: auto;
}

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

th, td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--gray-200);
}

th {
    font-weight: 500;
    color: var(--gray-500);
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
}

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

tbody tr:nth-child(even) {
    background-color: #fafafa; /* Subtle light gray for alternating rows */
}

tbody tr:hover {
    background-color: var(--gray-50); /* Slightly darker on hover */
}

/* Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 0.75rem;
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background-color: var(--primary-light);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-right: 1rem;
}

.stat-details h3 {
    font-size: 0.875rem;
    color: var(--gray-500);
    margin-bottom: 0.25rem;
}

.stat-details p {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--gray-900);
}

/* Responsive Grid Utilities */
.grid-2-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.grid-3-col {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.grid-1-2-col {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 2rem;
}

.grid-2-1-col {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--gray-800);
    padding: 0.5rem;
}

.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: 40;
}

.chat-layout {
    padding: 0;
    display: flex;
    height: 70vh;
    min-height: 500px;
    overflow: hidden;
}

@media (max-width: 1024px) {
    .grid-1-2-col, .grid-2-1-col {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        left: 0;
        top: 0;
        bottom: 0;
        z-index: 50;
        transform: translateX(-100%);
        transition: transform 0.3s ease-in-out;
    }
    
    .sidebar.sidebar-open {
        transform: translateX(0);
    }
    
    .sidebar-overlay.active {
        display: block;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .grid-2-col {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .topbar {
        padding: 1rem;
    }
    
    .page-content {
        padding: 1rem;
    }
    
    .card {
        padding: 1rem;
    }
    
    .chat-layout {
        flex-direction: column;
        height: auto;
        min-height: 0;
    }
    .chat-sidebar {
        width: 100% !important;
        border-right: none !important;
        border-bottom: 1px solid var(--gray-200);
        max-height: 300px;
    }
}