/* Rudra Palace Hostel - Modern UI Styles */

:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --success-color: #27ae60;
    --warning-color: #f39c12;
    --light-color: #ecf0f1;
    --dark-color: #2c3e50;
    --text-color: #34495e;
    --border-color: #bdc3c7;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
    --border-radius: 8px;
    --border-radius-lg: 12px;
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: var(--text-color);
    line-height: 1.6;
}

/* Login Page Styles */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.login-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    max-width: 400px;
    width: 100%;
}

.login-header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 30px 20px;
    text-align: center;
}

.login-logo {
    width: 80px;
    height: 80px;
    margin: 0 auto 15px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
}

.login-body {
    padding: 30px 20px;
}

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

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

.form-control {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 16px;
    transition: var(--transition);
    background: white;
}

.form-control:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.btn {
    display: inline-block;
    padding: 12px 24px;
    border: none;
    border-radius: var(--border-radius);
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    min-width: 120px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--secondary-color), #2980b9);
    color: white;
}

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

.btn-success {
    background: linear-gradient(135deg, var(--success-color), #229954);
    color: white;
}

.btn-success:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.btn-warning {
    background: linear-gradient(135deg, var(--warning-color), #e67e22);
    color: white;
}

.btn-warning:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.btn-danger {
    background: linear-gradient(135deg, var(--accent-color), #c0392b);
    color: white;
}

.btn-danger:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.btn-secondary {
    background: linear-gradient(135deg, #95a5a6, #7f8c8d);
    color: white;
}

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

/* Enhanced Container System */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.container-fluid {
    width: 100%;
    padding: 0 15px;
}

.row {
    display: flex;
    flex-wrap: wrap;
    margin: 0 -15px;
}

.col {
    flex: 1;
    padding: 0 15px;
}

.col-1 { flex: 0 0 8.333333%; max-width: 8.333333%; }
.col-2 { flex: 0 0 16.666667%; max-width: 16.666667%; }
.col-3 { flex: 0 0 25%; max-width: 25%; }
.col-4 { flex: 0 0 33.333333%; max-width: 33.333333%; }
.col-5 { flex: 0 0 41.666667%; max-width: 41.666667%; }
.col-6 { flex: 0 0 50%; max-width: 50%; }
.col-7 { flex: 0 0 58.333333%; max-width: 58.333333%; }
.col-8 { flex: 0 0 66.666667%; max-width: 66.666667%; }
.col-9 { flex: 0 0 75%; max-width: 75%; }
.col-10 { flex: 0 0 83.333333%; max-width: 83.333333%; }
.col-11 { flex: 0 0 91.666667%; max-width: 91.666667%; }
.col-12 { flex: 0 0 100%; max-width: 100%; }

/* Enhanced Dashboard Layout */
.dashboard-container {
    display: flex;
    min-height: 100vh;
    background: #f8f9fa;
}

.sidebar {
    width: 280px;
    background: linear-gradient(180deg, var(--primary-color) 0%, #34495e 50%, #2c3e50 100%);
    color: white;
    padding: 0;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    transition: transform 0.3s ease;
    display: flex;
    flex-direction: column;
}

.main-content {
    flex: 1;
    margin-left: 280px;
    background: #f8f9fa;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.content-wrapper {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.content-header {
    background: white;
    padding: 25px 30px;
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.content-title-section {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.content-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--primary-color);
    margin: 0;
}

.content-subtitle {
    color: #6c757d;
    font-size: 16px;
    margin: 0;
}

.content-actions {
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
}

.content-body {
    flex: 1;
    padding: 30px;
    max-width: none;
}

/* Enhanced Sidebar Animations */
.sidebar-link {
    position: relative;
    overflow: hidden;
}

.sidebar-link::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.sidebar-link:active::after {
    width: 300px;
    height: 300px;
}

/* Sidebar Scrollbar Styling */
.sidebar::-webkit-scrollbar {
    width: 6px;
}

.sidebar::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
}

.sidebar::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.3);
    border-radius: 3px;
}

.sidebar::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.5);
}

/* Sidebar Logo Animation */
.sidebar-logo {
    transition: var(--transition);
    animation: logoPulse 2s infinite;
}

.sidebar-logo:hover {
    transform: scale(1.1);
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.3);
}

@keyframes logoPulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.2);
    }
    50% {
        box-shadow: 0 0 0 10px rgba(255, 255, 255, 0);
    }
}

/* Sidebar Mobile Toggle */
.sidebar-toggle {
    display: none;
    position: fixed;
    top: 15px;
    right: 15px;
    z-index: 1001;
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 12px;
    border-radius: var(--border-radius);
    cursor: pointer;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.sidebar-toggle:hover {
    background: var(--secondary-color);
    transform: scale(1.05);
}

.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
}

.sidebar-toggle i {
    font-size: 18px;
}

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

.nav-item {
    list-style: none;
    margin: 5px 0;
}

.nav-link {
    display: block;
    padding: 12px 25px;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
    border-left: 4px solid transparent;
    font-weight: 500;
}

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

.nav-link.active {
    color: white;
    background: rgba(255, 255, 255, 0.1);
    border-left-color: var(--secondary-color);
}

.main-content {
    flex: 1;
    margin-left: 280px;
    background: #f8f9fa;
    min-height: 100vh;
}

.content-header {
    background: white;
    padding: 25px 30px;
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.content-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 5px;
}

.content-subtitle {
    color: #6c757d;
    font-size: 16px;
}

.content-body {
    padding: 30px;
}

/* Enhanced Card System */
.card {
    background: white;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: var(--transition);
    border: none;
    margin-bottom: 20px;
    display: flex;
    flex-direction: column;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.card-header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 20px 25px;
    border: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.card-title {
    font-size: 20px;
    font-weight: 700;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 10px;
}

.card-title i {
    font-size: 24px;
}

.card-subtitle {
    font-size: 14px;
    opacity: 0.9;
    margin: 5px 0 0 0;
}

.card-body {
    padding: 25px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.card-footer {
    background: var(--light-color);
    padding: 15px 25px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

/* Enhanced Stats Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: white;
    border-radius: var(--border-radius-lg);
    padding: 25px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border-left: 4px solid var(--secondary-color);
    display: flex;
    align-items: center;
    gap: 20px;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--secondary-color), #2980b9);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 24px;
    flex-shrink: 0;
}

.stat-content {
    flex: 1;
    min-width: 0;
}

.stat-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 5px;
    line-height: 1;
}

.stat-label {
    font-size: 14px;
    color: #6c757d;
    margin: 0;
    font-weight: 500;
}

/* Room Cards */
.room-card {
    margin-bottom: 25px;
}

.room-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.room-info {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: var(--light-color);
    border-radius: var(--border-radius);
    font-size: 14px;
}

.student-list {
    margin-top: 20px;
}

.student-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    margin-bottom: 10px;
    background: white;
    transition: var(--transition);
}

.student-item:hover {
    box-shadow: var(--shadow);
}

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

.student-photo {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--secondary-color);
}

.student-details h6 {
    margin: 0 0 5px 0;
    font-weight: 600;
    color: var(--primary-color);
}

.student-details p {
    margin: 0;
    font-size: 14px;
    color: #6c757d;
}

.student-actions {
    display: flex;
    gap: 8px;
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-dialog {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-lg {
    max-width: 800px;
}

.modal-content {
    background: white;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.modal-header {
    padding: 25px 30px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-title {
    font-size: 20px;
    font-weight: 700;
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    color: white;
    font-size: 24px;
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: var(--transition);
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.2);
}

.modal-body {
    padding: 30px;
}

.modal-footer {
    padding: 20px 30px;
    background: var(--light-color);
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

/* Enhanced Form System */
.form-container {
    max-width: 800px;
    margin: 0 auto;
}

.form-section {
    background: white;
    border-radius: var(--border-radius-lg);
    padding: 30px;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
}

.form-section-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--light-color);
    display: flex;
    align-items: center;
    gap: 10px;
}

.form-section-title i {
    color: var(--secondary-color);
}

.form-row {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
    align-items: flex-start;
}

.form-col {
    flex: 1;
    min-width: 0;
}

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

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text-color);
    font-size: 14px;
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 16px;
    transition: var(--transition);
    background: white;
    box-sizing: border-box;
}

.form-control:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.form-control:invalid {
    border-color: var(--accent-color);
}

.form-text {
    font-size: 12px;
    color: #6c757d;
    margin-top: 5px;
}

.checkbox-group,
.radio-group {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-top: 10px;
}

.checkbox-item,
.radio-item {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.checkbox-item input,
.radio-item input {
    margin: 0;
}

/* Enhanced Button System */
.btn-container {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    flex-wrap: wrap;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.btn-group {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border: none;
    border-radius: var(--border-radius);
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    min-width: 120px;
    box-sizing: border-box;
}

.btn i {
    font-size: 16px;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

.btn-block {
    width: 100%;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 14px;
    min-width: 100px;
}

.btn-lg {
    padding: 16px 32px;
    font-size: 18px;
    min-width: 140px;
}

/* Alert Styles */
.alert {
    padding: 15px 20px;
    border-radius: var(--border-radius);
    margin-bottom: 20px;
    border: none;
}

.alert-success {
    background: rgba(39, 174, 96, 0.1);
    color: var(--success-color);
    border-left: 4px solid var(--success-color);
}

.alert-danger {
    background: rgba(231, 76, 60, 0.1);
    color: var(--accent-color);
    border-left: 4px solid var(--accent-color);
}

.alert-warning {
    background: rgba(243, 156, 18, 0.1);
    color: var(--warning-color);
    border-left: 4px solid var(--warning-color);
}

.alert-info {
    background: rgba(52, 152, 219, 0.1);
    color: var(--secondary-color);
    border-left: 4px solid var(--secondary-color);
}

/* Enhanced Table System */
.table-container {
    background: white;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    overflow: hidden;
    margin-bottom: 20px;
}

.table-header {
    padding: 20px 25px;
    background: var(--light-color);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.table-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--primary-color);
    margin: 0;
    display: flex;
    align-items: center;
    gap: 10px;
}

.table-title i {
    color: var(--secondary-color);
}

.table-actions {
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
}

.table {
    width: 100%;
    border-collapse: collapse;
    margin: 0;
}

.table th,
.table td {
    padding: 15px 20px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
}

.table th {
    background: var(--light-color);
    font-weight: 600;
    color: var(--primary-color);
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    position: sticky;
    top: 0;
    z-index: 10;
}

.table tbody tr {
    transition: var(--transition);
}

.table tbody tr:hover {
    background: rgba(52, 152, 219, 0.05);
}

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

.table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.table td .btn {
    margin: 0;
}

/* Action buttons in tables */
.table-actions-cell {
    white-space: nowrap;
}

.table-actions-cell .btn {
    margin-right: 5px;
    margin-bottom: 2px;
}

.table-actions-cell .btn:last-child {
    margin-right: 0;
}

/* Status badges */
.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.status-badge.success {
    background: rgba(39, 174, 96, 0.1);
    color: var(--success-color);
}

.status-badge.warning {
    background: rgba(243, 156, 18, 0.1);
    color: var(--warning-color);
}

.status-badge.danger {
    background: rgba(231, 76, 60, 0.1);
    color: var(--accent-color);
}

.status-badge.info {
    background: rgba(52, 152, 219, 0.1);
    color: var(--secondary-color);
}

/* Enhanced Mobile Responsive Design */
@media (max-width: 768px) {
    /* Container adjustments */
    .container,
    .container-fluid {
        padding: 0 10px;
    }

    /* Sidebar mobile enhancements */
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        width: 280px;
        position: fixed;
        z-index: 1000;
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
        width: 100%;
    }

    .sidebar-toggle {
        display: flex;
        position: fixed;
        top: 15px;
        left: 15px;
        z-index: 1001;
        background: var(--primary-color);
        color: white;
        border: none;
        padding: 12px;
        border-radius: var(--border-radius);
        cursor: pointer;
        box-shadow: var(--shadow);
        transition: var(--transition);
        align-items: center;
        justify-content: center;
    }

    .sidebar-toggle:hover {
        background: var(--secondary-color);
        transform: scale(1.05);
    }

    .sidebar-overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.5);
        z-index: 999;
    }

    /* Content adjustments */
    .content-header {
        padding: 20px 15px;
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }

    .content-title {
        font-size: 24px;
        margin: 0;
    }

    .content-subtitle {
        font-size: 14px;
        margin: 0;
    }

    .content-actions {
        width: 100%;
        justify-content: stretch;
    }

    .content-actions .btn {
        flex: 1;
        min-width: 120px;
    }

    .content-body {
        padding: 15px;
    }

    /* Enhanced card mobile layout */
    .card {
        margin-bottom: 15px;
    }

    .card-header {
        padding: 15px 20px;
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .card-title {
        font-size: 18px;
        width: 100%;
        justify-content: space-between;
    }

    .card-body {
        padding: 20px;
    }

    .card-footer {
        padding: 15px 20px;
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
    }

    /* Stats grid mobile */
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 15px;
        margin-bottom: 20px;
    }

    .stat-card {
        padding: 20px;
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }

    .stat-icon {
        width: 50px;
        height: 50px;
        font-size: 20px;
        margin: 0 auto;
    }

    .stat-content {
        text-align: center;
    }

    /* Form enhancements for mobile */
    .form-container {
        max-width: 100%;
    }

    .form-section {
        padding: 20px;
        margin-bottom: 15px;
    }

    .form-row {
        flex-direction: column;
        gap: 0;
        margin-bottom: 0;
    }

    .form-col {
        width: 100%;
    }

    .form-control {
        font-size: 16px; /* Prevents zoom on iOS */
        padding: 14px 16px;
    }

    .btn-container {
        flex-direction: column-reverse;
        gap: 10px;
        margin-top: 20px;
        padding-top: 15px;
    }

    .btn-group {
        flex-direction: column;
        width: 100%;
    }

    .btn {
        width: 100%;
        min-width: auto;
        padding: 14px 20px;
        font-size: 16px;
        justify-content: center;
    }

    .btn-group .btn {
        margin-bottom: 8px;
    }

    .btn-group .btn:last-child {
        margin-bottom: 0;
    }

    /* Table mobile enhancements */
    .table-container {
        margin: 0 -15px 15px -15px;
        border-radius: 0;
    }

    .table-header {
        padding: 15px 20px;
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .table-title {
        font-size: 16px;
    }

    .table-actions {
        width: 100%;
        justify-content: stretch;
    }

    .table-responsive {
        margin: 0 -20px;
    }

    .table th,
    .table td {
        padding: 12px 15px;
        font-size: 14px;
    }

    .table th {
        font-size: 12px;
        padding: 10px 15px;
    }

    .table-actions-cell {
        min-width: 120px;
    }

    .table-actions-cell .btn {
        padding: 6px 12px;
        font-size: 12px;
        min-width: auto;
        margin-right: 4px;
        margin-bottom: 4px;
    }

    /* Modal mobile adjustments */
    .modal-dialog {
        width: 95%;
        margin: 10px auto;
        max-height: 90vh;
    }

    .modal-header {
        padding: 20px;
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }

    .modal-title {
        font-size: 18px;
        width: 100%;
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .modal-body {
        padding: 20px;
    }

    .modal-footer {
        padding: 20px;
        flex-direction: column;
        gap: 10px;
    }

    .modal-footer .btn {
        width: 100%;
    }

    /* Room cards mobile */
    .room-card {
        margin-bottom: 15px;
    }

    .room-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .room-info {
        flex-direction: column;
        gap: 8px;
    }

    .info-item {
        padding: 6px 10px;
        font-size: 13px;
    }

    /* Student items mobile */
    .student-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
        padding: 15px;
    }

    .student-info {
        width: 100%;
        flex-direction: column;
        gap: 8px;
    }

    .student-photo {
        width: 40px;
        height: 40px;
    }

    .student-details h6 {
        font-size: 14px;
    }

    .student-details p {
        font-size: 13px;
    }

    .student-actions {
        width: 100%;
        justify-content: center;
        gap: 8px;
    }

    .student-actions .btn {
        flex: 1;
        min-width: 80px;
    }

    /* Enhanced touch targets */
    .sidebar-link {
        padding: 16px 20px;
        min-height: 48px;
        align-items: center;
    }

    .sidebar-link i {
        margin-right: 12px;
        width: 24px;
        text-align: center;
    }

    /* Alert mobile adjustments */
    .alert {
        padding: 12px 16px;
        margin-bottom: 15px;
        font-size: 14px;
    }

    /* Grid system mobile */
    .row {
        margin: 0 -10px;
    }

    .col,
    .col-1, .col-2, .col-3, .col-4,
    .col-5, .col-6, .col-7, .col-8,
    .col-9, .col-10, .col-11, .col-12 {
        padding: 0 10px;
        flex: 0 0 100%;
        max-width: 100%;
    }

    /* Utility classes for mobile */
    .text-center-mobile {
        text-align: center;
    }

    .mb-mobile-2 { margin-bottom: 10px; }
    .mb-mobile-3 { margin-bottom: 15px; }
    .mb-mobile-4 { margin-bottom: 20px; }
}

/* Tablet Responsive Design */
@media (min-width: 769px) and (max-width: 1024px) {
    .container {
        padding: 0 15px;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }

    .content-header {
        padding: 20px 25px;
    }

    .content-title {
        font-size: 26px;
    }

    .sidebar {
        width: 260px;
    }

    .main-content {
        margin-left: 260px;
    }

    .form-row {
        gap: 15px;
    }

    .table th,
    .table td {
        padding: 12px 15px;
    }
}

/* Large Desktop Enhancements */
@media (min-width: 1200px) {
    .container {
        max-width: 1400px;
    }

    .stats-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .content-body {
        padding: 40px;
    }

    .card-body {
        padding: 30px;
    }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.d-flex { display: flex; }
.d-block { display: block; }
.d-none { display: none; }

.justify-content-start { justify-content: flex-start; }
.justify-content-center { justify-content: center; }
.justify-content-end { justify-content: flex-end; }
.justify-content-between { justify-content: space-between; }
.justify-content-around { justify-content: space-around; }

.align-items-start { align-items: flex-start; }
.align-items-center { align-items: center; }
.align-items-end { align-items: flex-end; }

.flex-wrap { flex-wrap: wrap; }
.flex-nowrap { flex-wrap: nowrap; }

.w-100 { width: 100%; }
.h-100 { height: 100%; }

.m-0 { margin: 0; }
.mt-1 { margin-top: 5px; }
.mt-2 { margin-top: 10px; }
.mt-3 { margin-top: 15px; }
.mt-4 { margin-top: 20px; }
.mt-5 { margin-top: 25px; }

.mb-1 { margin-bottom: 5px; }
.mb-2 { margin-bottom: 10px; }
.mb-3 { margin-bottom: 15px; }
.mb-4 { margin-bottom: 20px; }
.mb-5 { margin-bottom: 25px; }

.p-1 { padding: 5px; }
.p-2 { padding: 10px; }
.p-3 { padding: 15px; }
.p-4 { padding: 20px; }
.p-5 { padding: 25px; }

.shadow { box-shadow: var(--shadow); }
.shadow-lg { box-shadow: var(--shadow-lg); }

.rounded { border-radius: var(--border-radius); }
.rounded-lg { border-radius: var(--border-radius-lg); }

/* Focus and Accessibility Enhancements */
.btn:focus,
.form-control:focus,
.sidebar-link:focus {
    outline: 2px solid var(--secondary-color);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --primary-color: #000000;
        --secondary-color: #0000ff;
        --text-color: #000000;
        --border-color: #000000;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

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

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

    .content-header,
    .content-body {
        padding: 0 !important;
    }

    .card {
        box-shadow: none !important;
        border: 1px solid #000 !important;
    }
}