:root {
    --primary: #2c3e50;
    --secondary: #34495e;
    --accent: #2980b9;
    --success: #27ae60;
    --danger: #c0392b;
    --warning: #f39c12;
    --light: #f5f7fa;
    --dark: #2c3e50;
    --bg-primary: #f8f9fa;
    --bg-secondary: #e9ecef;
    --text-primary: #212529;
    --text-secondary: #495057;
    --card-bg: #ffffff;
    --border: #dee2e6;
    --button-text: #ffffff;
}

@media (prefers-color-scheme: dark) {
    :root {
        --primary: #ecf0f1;
        --secondary: #bdc3c7;
        --accent: #3498db;
        --success: #2ecc71;
        --danger: #e74c3c;
        --warning: #f1c40f;
        --light: #34495e;
        --dark: #ecf0f1;
        --bg-primary: #121212;
        --bg-secondary: #1e1e1e;
        --text-primary: #f8f9fa;
        --text-secondary: #adb5bd;
        --card-bg: #2d2d2d;
        --border: #444444;
        --button-text: #ffffff;
    }
}

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

body {
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.hidden {
    display: none !important;
}

/* Login Form */
.login-form {
    max-width: 400px;
    margin: 100px auto;
    padding: 30px;
    background: var(--card-bg);
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.login-form h1 {
    text-align: center;
    margin-bottom: 30px;
    color: var(--accent);
}

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

.form-row {
    display: flex;
    gap: 15px;
}

.form-row .form-group {
    flex: 1;
}

label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
    color: var(--text-primary);
}

input[type="text"],
input[type="password"] {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: 5px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 16px;
}

input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
}

/* Buttons */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background: var(--accent);
    color: var(--button-text);
}

.btn-secondary {
    background: var(--secondary);
    color: var(--button-text);
}

.btn-danger {
    background: var(--danger);
    color: var(--button-text);
}

.btn:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

.btn:active {
    transform: translateY(0);
}

/* Messages */
.message {
    padding: 10px;
    border-radius: 5px;
    margin: 10px 0;
    text-align: center;
}

.message.error {
    background: #fee;
    color: var(--danger);
    border: 1px solid #fcc;
}

.message.success {
    background: #efe;
    color: var(--success);
    border: 1px solid #cfc;
}

/* Admin Container */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 15px;
}

/* Cards */
.card {
    background: var(--card-bg);
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    margin-bottom: 25px;
}

.card h2 {
    margin-bottom: 20px;
    color: var(--accent);
}

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

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
}

th, td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

th {
    background: var(--bg-secondary);
    font-weight: 600;
}

tr:hover {
    background: var(--bg-secondary);
}

/* Checkbox */
.checkbox-container {
    display: flex;
    align-items: center;
    cursor: pointer;
    user-select: none;
}

.checkbox-container input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
}

.checkmark {
    height: 20px;
    width: 20px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 3px;
    margin-right: 10px;
    position: relative;
}

.checkbox-container input:checked ~ .checkmark {
    background: var(--accent);
    border-color: var(--accent);
}

.checkmark:after {
    content: "";
    position: absolute;
    display: none;
}

.checkbox-container input:checked ~ .checkmark:after {
    display: block;
}

.checkbox-container .checkmark:after {
    left: 6px;
    top: 2px;
    width: 5px;
    height: 10px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

/* 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: var(--card-bg);
    padding: 0;
    border-radius: 10px;
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
}

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

.modal-header h3 {
    margin: 0;
}

.close-btn {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-secondary);
}

#edit-user-form {
    padding: 20px;
}

.form-actions {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    margin-top: 20px;
}

/* Responsive */
@media (max-width: 768px) {
    .form-row {
        flex-direction: column;
        gap: 0;
    }
    
    header {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
    
    .user-info {
        justify-content: center;
    }
    
    .container {
        padding: 15px;
    }
    
    .card {
        padding: 15px;
    }
}

h1{
    color: var(--accent);
    margin-bottom: 20px;
}

/* Mobile Navigation for Admin */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.mobile-menu-toggle:hover {
    background: rgba(41, 128, 185, 0.1);
    color: var(--accent);
}

.mobile-menu-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 9998;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.mobile-menu-overlay.active {
    display: block;
    opacity: 1;
}

.mobile-menu-sidebar {
    position: fixed;
    top: 0;
    right: -300px;
    width: 280px;
    height: 100%;
    background: var(--card-bg);
    z-index: 9999;
    transition: right 0.3s ease;
    box-shadow: -2px 0 10px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
}

.mobile-menu-sidebar.active {
    right: 0;
}

.mobile-menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border);
    background: linear-gradient(135deg, var(--accent) 0%, var(--secondary) 100%);
    color: var(--button-text);
}

.mobile-menu-header h3 {
    color: var(--button-text);
    margin: 0;
    font-size: 1.2rem;
}

.mobile-menu-close {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: var(--button-text);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1.2rem;
}

.mobile-menu-close:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: rotate(90deg);
}

.mobile-menu-items {
    flex: 1;
    padding: 1rem 0;
    display: flex;
    flex-direction: column;
}

.mobile-nav-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.5rem;
    color: var(--text-primary);
    text-decoration: none;
    transition: all 0.3s ease;
    border-left: 4px solid transparent;
}

.mobile-nav-item:hover {
    background: var(--bg-secondary);
    border-left-color: var(--accent);
    color: var(--accent);
}

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

.mobile-nav-welcome {
    padding: 1rem 1.5rem;
    font-weight: 600;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border);
    margin-bottom: 0.5rem;
}

.mobile-nav-logout {
    margin-top: auto;
    background: var(--danger);
    color: var(--button-text) !important;
    border-left-color: var(--danger) !important;
}

.mobile-nav-logout:hover {
    background: #c0392b !important;
    color: var(--button-text) !important;
}

/* Header Content */
.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    gap: 1rem;
}

.header-content h1 {
    margin: 0;
    flex: 1;
    text-align: center;
}

.home-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Mobile Responsive Design */
@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: block;
    }

    .header-content {
        flex-wrap: wrap;
    }

    .header-content h1 {
        order: 2;
        flex: 100%;
        margin-top: 1rem;
        font-size: 1.5rem;
    }

    .user-info {
        order: 1;
        display: flex;
        align-items: center;
        gap: 0.5rem;
    }

    .home-btn {
        display: none; /* Hide desktop home button on mobile */
    }

    .user-info span {
        display: none; /* Hide greeting text on mobile */
    }

    /* Container adjustments */
    .container {
        padding: 10px;
    }

    /* Card adjustments */
    .card {
        padding: 1.25rem;
        margin-bottom: 1rem;
    }

    /* Form adjustments */
    .form-row {
        flex-direction: column;
        gap: 0;
    }

    /* Table adjustments */
    .table-container {
        font-size: 0.9rem;
    }

    table {
        min-width: 600px; /* Allow horizontal scrolling */
    }

    th, td {
        padding: 8px 6px;
    }

    /* Button adjustments */
    .btn {
        padding: 10px 16px;
        font-size: 0.9rem;
    }

    /* Modal adjustments */
    .modal-content {
        width: 95%;
        margin: 5% auto;
    }

    .form-actions {
        flex-direction: column;
    }

    .form-actions .btn {
        width: 100%;
    }

    /* Login form adjustments */
    .login-form {
        margin: 50px auto;
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .mobile-menu-sidebar {
        width: 85%;
        right: -85%;
    }

    .header-content h1 {
        font-size: 1.3rem;
    }

    .card h2 {
        font-size: 1.3rem;
    }

    .btn {
        padding: 8px 12px;
        font-size: 0.85rem;
    }

    .user-info .btn {
        min-width: auto;
        padding: 6px 10px;
    }

    .login-form {
        margin: 20px auto;
        padding: 1.25rem;
    }

    .login-form h1 {
        font-size: 1.5rem;
    }
}

/* Prevent body scroll when mobile menu is open */
body.mobile-menu-open {
    overflow: hidden;
}

/* Smooth transitions for mobile menu */
.mobile-menu-sidebar,
.mobile-menu-overlay {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Home button specific styles */
.home-btn {
    background: var(--success);
    color: var(--button-text);
}

.home-btn:hover {
    background: #229954;
    transform: translateY(-1px);
}

/* Admin Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(5px);
    animation: fadeIn 0.3s ease;
}

.modal.open {
    display: block;
}

.modal-content {
    background: var(--card-bg);
    margin: 5% auto;
    border-radius: 12px;
    width: 90%;
    max-width: 500px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border);
    animation: slideDown 0.3s ease;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--border);
    background: linear-gradient(135deg, var(--accent) 0%, var(--secondary) 100%);
    color: var(--button-text);
    border-radius: 12px 12px 0 0;
}

.modal-header h3 {
    color: var(--button-text);
    margin: 0;
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.modal-close {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: var(--button-text);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1.2rem;
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: rotate(90deg);
}

.modal-body {
    padding: 2rem;
}

.modal-body p {
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    line-height: 1.5;
}

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

.modal-body .form-group label {
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    display: block;
}

.modal-body input[type="text"],
.modal-body input[type="password"] {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--border);
    border-radius: 8px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s ease;
    box-sizing: border-box;
}

.modal-body input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(41, 128, 185, 0.1);
}

.modal-body small {
    margin-top: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.85rem;
    display: block;
}

/* Checkbox Styles for Admin Privileges */
.checkbox-label {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-weight: 600;
    color: var(--text-primary);
    gap: 0.75rem;
    padding: 0.75rem 0;
}

.checkbox-label input[type="checkbox"] {
    display: block;
}

.checkmark {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border);
    border-radius: 4px;
    position: relative;
    transition: all 0.3s ease;
    background: var(--bg-secondary);
}

.checkbox-label input[type="checkbox"]:checked + .checkmark {
    background: var(--accent);
    border-color: var(--accent);
}

.checkbox-label input[type="checkbox"]:checked + .checkmark::after {
    content: '✓';
    position: absolute;
    color: white;
    font-size: 14px;
    font-weight: bold;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.checkbox-label:hover .checkmark {
    border-color: var(--accent);
}

/* Delete Warning Styles */
.delete-warning {
    background: rgba(231, 76, 60, 0.1);
    border: 1px solid var(--danger);
    border-radius: 8px;
    padding: 1rem;
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.delete-warning i {
    color: var(--danger);
    font-size: 1.2rem;
    margin-top: 0.1rem;
}

.delete-warning p {
    color: var(--text-primary);
    margin: 0;
    font-weight: 600;
}

.delete-consequences {
    background: var(--bg-secondary);
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 1.5rem;
}

.delete-consequences p {
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    font-weight: 600;
}

.delete-consequences ul {
    color: var(--text-secondary);
    margin: 0;
    padding-left: 1.5rem;
}

.delete-consequences li {
    margin-bottom: 0.5rem;
    line-height: 1.4;
}

.delete-consequences li:last-child {
    margin-bottom: 0;
}

/* Modal Actions */
.modal-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    padding: 1.5rem 2rem;
    border-top: 1px solid var(--border);
}

.modal-actions .btn {
    min-width: 120px;
    padding: 0.75rem 1.5rem;
    font-size: 0.95rem;
    font-weight: 600;
}

/* Button States */
.btn-danger {
    background: var(--danger);
    color: var(--button-text);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-danger:hover {
    background: #c0392b;
    transform: translateY(-2px);
}

.btn-primary {
    background: var(--accent);
    color: var(--button-text);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background: var(--secondary);
    transform: translateY(-2px);
}

.btn-secondary {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: var(--border);
    transform: translateY(-2px);
}

/* Modal Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Form Error/Success Messages in Modal */
.modal-error {
    background: rgba(231, 76, 60, 0.1);
    border: 1px solid var(--danger);
    color: var(--danger);
    padding: 1rem 1.5rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    animation: slideDown 0.3s ease-out;
}

.modal-error i {
    font-size: 1.1rem;
}

.modal-success {
    background: rgba(39, 174, 96, 0.1);
    border: 1px solid var(--success);
    color: var(--success);
    padding: 1rem 1.5rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

/* Responsive Modal */
@media (max-width: 768px) {
    .modal-content {
        margin: 10% auto;
        width: 95%;
        max-width: none;
    }
    
    .modal-header {
        padding: 1.25rem 1.5rem;
    }
    
    .modal-header h3 {
        font-size: 1.3rem;
    }
    
    .modal-body {
        padding: 1.5rem;
    }
    
    .modal-actions {
        padding: 1.25rem 1.5rem;
        flex-direction: column;
    }
    
    .modal-actions .btn {
        min-width: auto;
        width: 100%;
    }
    
    .delete-warning,
    .delete-consequences {
        padding: 0.875rem;
    }
    
    .delete-consequences ul {
        padding-left: 1.25rem;
    }
}

@media (max-width: 480px) {
    .modal-content {
        margin: 5% auto;
    }
    
    .modal-header {
        padding: 1rem 1.25rem;
    }
    
    .modal-body {
        padding: 1.25rem;
    }
    
    .modal-actions {
        padding: 1rem 1.25rem;
    }
    
    .modal-header h3 {
        font-size: 1.2rem;
    }
    
    .modal-body p {
        font-size: 1rem;
    }
}

/* Ensure proper z-index stacking */
.modal {
    z-index: 10000;
}

.modal-content {
    z-index: 10001;
}

/* Loading state for buttons */
.btn-loading {
    position: relative;
    color: transparent !important;
}

.btn-loading::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    top: 50%;
    left: 50%;
    margin-left: -8px;
    margin-top: -8px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Focus styles for accessibility */
.modal-close:focus,
.btn:focus {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .modal-content {
        border: 2px solid var(--text-primary);
    }
    
    .modal-header {
        border-bottom: 2px solid var(--border);
    }
    
    .modal-actions {
        border-top: 2px solid var(--border);
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    .modal,
    .modal-content,
    .modal-close,
    .btn {
        animation: none;
        transition: none;
    }
}