:root {
    --primary-color: #2563eb;
    --secondary-color: #1e40af;
    --sidebar-bg: #1a365d;
    --sidebar-width: 280px;
    --header-height: 60px;
}

body {
    background-color: #f8f9fa;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    min-height: 100vh;
    margin: 0;
    padding: 0;
}

/* Sidebar Styles */
.sidebar {
    position: fixed;
    top: 0;
    right: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background-color: var(--sidebar-bg);
    color: white;
    padding: 1rem;
    overflow-y: auto;
    z-index: 1000;
    transition: transform 0.3s ease;
}

.user-profile {
    text-align: center;
    padding: 1.5rem 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: 1rem;
}

.nav-item {
    margin-bottom: 0.5rem;
}

.nav-link {
    color: rgba(255, 255, 255, 0.8);
    padding: 0.75rem 1rem;
    border-radius: 8px;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
}

.nav-link:hover {
    color: white;
    background-color: rgba(255, 255, 255, 0.1);
}

.nav-link.active {
    color: white;
    background-color: var(--primary-color);
}

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

/* Main Content Styles */
.main-content {
    margin-right: var(--sidebar-width);
    padding: 2rem;
    min-height: 100vh;
    transition: margin-right 0.3s ease;
}

/* Cards */
.card {
    border: none;
    border-radius: 15px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    margin-bottom: 1.5rem;
}

.card-header {
    background-color: transparent;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    padding: 1.25rem;
}

.card-body {
    padding: 1.25rem;
}

/* Tables */
.table {
    margin-bottom: 0;
}

.table th {
    border-top: none;
    font-weight: 600;
    padding: 1rem;
}

.table td {
    padding: 1rem;
    vertical-align: middle;
}

/* Buttons */
.btn {
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

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

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

/* Status Badges */
.status-badge {
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.875rem;
}

.status-badge.pending {
    background-color: #fff3cd;
    color: #856404;
}

.status-badge.approved {
    background-color: #d4edda;
    color: #155724;
}

.status-badge.rejected {
    background-color: #f8d7da;
    color: #721c24;
}

/* Rating Stars */
.rating-stars {
    color: #f39c12;
    font-size: 1.2rem;
}

/* Stats Cards */
.stats-card {
    border-radius: 15px;
    border: none;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: transform 0.2s ease;
    background: white;
    margin-bottom: 1rem;
    padding: 1.5rem;
}

.stats-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin-bottom: 1rem;
}

.stats-number {
    font-size: 1.5rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

.stats-label {
    color: #6c757d;
    margin: 0;
}

/* Faculty Evaluations Page */
.faculty-card {
    transition: transform 0.2s;
    cursor: pointer;
}

.faculty-card:hover {
    transform: translateY(-5px);
}

.faculty-card.active {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.25rem rgba(37, 99, 235, 0.25);
}

.evaluation-card {
    border-radius: 15px;
    border: 1px solid #e5e7eb;
    margin-bottom: 1rem;
    transition: all 0.2s ease;
    background: white;
}

.evaluation-card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.evaluation-card .card-header {
    background: none;
    border-bottom: 1px solid #e5e7eb;
    padding: 1rem 1.5rem;
}

.evaluation-card .card-body {
    padding: 1.5rem;
}

/* Faculty Members Page */
.faculty-card {
    transition: all 0.3s ease;
    border: none;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.faculty-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.faculty-card .card-body {
    padding: 1.5rem;
}

.faculty-name {
    color: var(--primary-color);
    font-weight: 600;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #4b5563;
    font-size: 0.95rem;
}

.empty-state {
    padding: 3rem;
    text-align: center;
    background: white;
    border-radius: 15px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.empty-state i {
    color: var(--primary-color);
    opacity: 0.5;
    margin-bottom: 1rem;
}

.empty-state h4 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.empty-state p {
    max-width: 300px;
    margin: 0 auto;
}

/* Dropdown Menu */
.dropdown-menu {
    min-width: 200px;
    padding: 0.5rem;
    border: none;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
}

.dropdown-item {
    padding: 0.75rem 1rem;
    border-radius: 6px;
    transition: all 0.2s ease;
}

.dropdown-item:hover {
    background-color: #f3f4f6;
}

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

/* Page Header */
.page-header {
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid #e5e7eb;
}

.page-header h2 {
    color: var(--primary-color);
    font-weight: 600;
}

/* Alert Styles */
.alert {
    border: none;
    border-radius: 10px;
    padding: 1rem 1.25rem;
    margin-bottom: 1.5rem;
}

.alert-success {
    background-color: #d1fae5;
    color: #065f46;
}

.alert-danger {
    background-color: #fee2e2;
    color: #991b1b;
}

.alert-dismissible .btn-close {
    padding: 1.25rem;
}

/* Modal Styles */
.modal-content {
    border: none;
    border-radius: 15px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.modal-header {
    border-bottom: 1px solid #e5e7eb;
    padding: 1.25rem 1.5rem;
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    border-top: 1px solid #e5e7eb;
    padding: 1.25rem 1.5rem;
}

.form-label {
    color: #4b5563;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.form-control {
    padding: 0.75rem 1rem;
    border-radius: 8px;
    border: 1px solid #e5e7eb;
    transition: all 0.2s ease;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* Responsive Design */
.toggle-sidebar {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 1100;
    display: none;
    background: white;
    border: none;
    padding: 0.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    cursor: pointer;
}

@media (max-width: 768px) {
    .toggle-sidebar {
        display: flex;
    }
    
    .sidebar {
        transform: translateX(var(--sidebar-width));
    }
    
    .sidebar.show {
        transform: translateX(0);
    }
    
    .main-content {
        margin-right: 0;
        padding-top: 4rem;
    }
}

/* Alerts */
.alert {
    border-radius: 10px;
    padding: 1rem;
    margin-bottom: 1rem;
    border: none;
}

.alert i {
    margin-left: 0.5rem;
}

/* Forms */
.form-control {
    border-radius: 8px;
    padding: 0.75rem 1rem;
    border: 1px solid #e2e8f0;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(37, 99, 235, 0.25);
}

.form-label {
    font-weight: 500;
    margin-bottom: 0.5rem;
}

/* Modal */
.modal-content {
    border-radius: 15px;
    border: none;
}

.modal-header {
    border-bottom: 1px solid #e2e8f0;
    padding: 1.25rem;
}

.modal-body {
    padding: 1.25rem;
}

.modal-footer {
    border-top: 1px solid #e2e8f0;
    padding: 1.25rem;
}

/* Print Styles */
@media print {
    .sidebar,
    .toggle-sidebar,
    .no-print {
        display: none !important;
    }

    .main-content {
        margin: 0 !important;
        padding: 0 !important;
    }

    body {
        background: white !important;
    }

    .no-print {
        display: none !important;
    }

    .print-container {
        padding: 2rem;
    }

    .header {
        text-align: center;
        margin-bottom: 2rem;
    }

    .evaluation-details {
        margin-bottom: 2rem;
    }

    .questions-section {
        margin-bottom: 2rem;
    }

    .signature-section {
        margin-top: 3rem;
    }

    .signature-box {
        border-top: 1px solid #000;
        margin-top: 2rem;
        padding-top: 0.5rem;
        text-align: center;
    }

    @page {
        size: A4;
        margin: 1.5cm;
    }

    body {
        background: white;
    }

    .main-content {
        margin: 0;
        padding: 0;
    }

    .container {
        max-width: 100%;
        width: 100%;
        padding: 0;
        margin: 0;
    }
}

/* Login Page */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #f6f9fc 0%, #ecf2f9 100%);
    position: relative;
    overflow: hidden;
}

.background-shapes {
    position: fixed;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.shape {
    position: absolute;
    border-radius: 50%;
    background: rgba(37, 99, 235, 0.1);
}

.shape-1 {
    width: 300px;
    height: 300px;
    top: -150px;
    right: -150px;
}

.shape-2 {
    width: 200px;
    height: 200px;
    bottom: -100px;
    left: -100px;
}

.login-container {
    width: 100%;
    max-width: 450px;
    margin: 2rem auto;
    padding: 2.5rem;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    backdrop-filter: blur(10px);
    position: relative;
    z-index: 1;
    animation: slideUp 0.5s ease forwards;
}

.login-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.login-header i {
    font-size: 60px;
    color: var(--primary-color);
    margin-bottom: 1rem;
    animation: pulse 2s infinite;
}

.login-header h2 {
    color: var(--primary-color);
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
}

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

.form-control {
    height: 50px;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    border: 1px solid #e5e7eb;
    border-radius: 10px;
    transition: all 0.3s ease;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
    transform: translateY(-2px);
}

.btn-login {
    width: 100%;
    height: 50px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 500;
    transition: all 0.3s ease;
    margin-top: 1rem;
}

.btn-login:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2);
}

.password-toggle {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: #6b7280;
    cursor: pointer;
    z-index: 2;
    padding: 0.5rem;
}

.input-group {
    position: relative;
}

.input-group .form-control {
    padding-right: 3rem;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

@media (max-width: 576px) {
    .login-container {
        margin: 1rem;
        padding: 2rem;
    }
    
    .login-header i {
        font-size: 48px;
    }
    
    .login-header h2 {
        font-size: 1.5rem;
    }
}

/* Profile Card Styles */
.profile-card {
    background: white;
    border-radius: 15px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    margin-bottom: 2rem;
}

.profile-avatar {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f8f9fa;
    border-radius: 50%;
    color: var(--primary-color);
    margin-left: 1.5rem;
}

.profile-info-item {
    margin-bottom: 1rem;
}

.profile-info-item label {
    display: block;
    color: #6c757d;
    font-size: 0.875rem;
    margin-bottom: 0.25rem;
}

.profile-info-item span {
    font-weight: 500;
    color: #2d3748;
}

.profile-info-item i {
    color: var(--primary-color);
}