:root {
    --primary-color: #4a90e2;
    --secondary-color: #f5f6fa;
    --text-color: #2d3436;
    --sidebar-width: 250px;
    --header-height: 60px;
    --success-color: #27ae60;
    --warning-color: #f1c40f;
    --danger-color: #e74c3c;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--secondary-color);
    color: var(--text-color);
}

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

/* Sidebar Styles */
.sidebar {
    width: var(--sidebar-width);
    background-color: white;
    box-shadow: 2px 0 5px rgba(0, 0, 0, 0.1);
    position: fixed;
    height: 100vh;
    overflow-y: auto;
}

.sidebar-header {
    padding: 20px;
    text-align: center;
    border-bottom: 1px solid #eee;
    background-color: #f8f9fa;
}

.school-branding {
    display: flex;
    justify-content: center;
    align-items: center;
}

.logo {
    width: 100px;
    height: 100px;
    object-fit: contain;
}

.nav-links {
    list-style: none;
    padding: 20px 0;
}

.nav-links li {
    padding: 10px 20px;
    margin: 5px 0;
}

.nav-links li a {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--text-color);
    padding: 10px;
    border-radius: 5px;
    transition: all 0.3s ease;
}

.nav-links li.active a,
.nav-links li a:hover {
    background-color: var(--primary-color);
    color: white;
}

.nav-links li a i {
    margin-right: 10px;
    width: 20px;
    text-align: center;
}

.badge {
    background-color: var(--danger-color);
    color: white;
    padding: 2px 6px;
    border-radius: 10px;
    font-size: 12px;
    margin-left: auto;
}

/* Main Content Styles */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: 20px;
}

/* Top Bar Styles */
.top-bar {
    height: var(--header-height);
    background-color: white;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.search-bar {
    display: flex;
    align-items: center;
    background-color: var(--secondary-color);
    padding: 8px 15px;
    border-radius: 20px;
    width: 300px;
}

.search-bar input {
    border: none;
    background: none;
    outline: none;
    width: 100%;
    margin-right: 10px;
}

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

.notifications {
    position: relative;
    cursor: pointer;
}

.profile {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    padding: 8px 12px;
    border-radius: 30px;
    background-color: white;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
    min-width: 280px;
}

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

.profile-photo {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--primary-color);
}

.profile-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
    flex: 1;
}

.profile-name {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-color);
    margin: 0;
}

.profile-matricule {
    font-size: 0.75rem;
    color: #666;
    font-family: 'Courier New', monospace;
    letter-spacing: 0.5px;
}

.profile-discipline {
    font-size: 0.8rem;
    color: var(--primary-color);
    font-weight: 500;
    margin-top: 2px;
}

.profile .fa-chevron-down {
    font-size: 0.8rem;
    color: #666;
    margin-left: 4px;
}

/* Responsive adjustments for profile */
@media (max-width: 768px) {
    .profile-info {
        display: none;
    }
    
    .profile .fa-chevron-down {
        display: none;
    }
    
    .profile {
        padding: 4px;
        min-width: auto;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .sidebar {
        width: 60px;
    }

    .sidebar-header h2,
    .nav-links li a span {
        display: none;
    }

    .main-content {
        margin-left: 60px;
    }

    .search-bar {
        width: 200px;
    }
}

/* Utility Classes */
.hidden {
    display: none;
}

.flex {
    display: flex;
}

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

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

.gap-2 {
    gap: 0.5rem;
}