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

:root {
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    direction: rtl;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 30px;
    border-radius: 12px;
    margin-bottom: 30px;
    box-shadow: var(--shadow-lg);
}

header h1 {
    font-size: 2rem;
    margin-bottom: 10px;
}

.subtitle {
    opacity: 0.9;
    font-size: 1.1rem;
}

.back-btn {
    display: inline-block;
    margin-top: 15px;
    color: white;
    text-decoration: none;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 6px;
    transition: background 0.3s;
}

.back-btn:hover {
    background: rgba(255, 255, 255, 0.3);
}

.main-nav {
    display: flex;
    gap: 10px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.nav-item {
    flex: 1;
    min-width: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 15px 20px;
    background: var(--card-bg);
    color: var(--text-primary);
    text-decoration: none;
    border-radius: 8px;
    box-shadow: var(--shadow);
    transition: all 0.3s;
    border: 2px solid transparent;
}

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

.nav-item.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-dark);
}

.nav-item .icon {
    font-size: 1.2rem;
}

/* Dashboard */
.dashboard {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.stat-card {
    background: var(--card-bg);
    padding: 25px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: 20px;
    transition: transform 0.3s;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.stat-icon {
    font-size: 3rem;
    opacity: 0.8;
}

.stat-info h3 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 5px;
}

.stat-info p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.quick-actions h2,
.recent-activity h2 {
    margin-bottom: 20px;
    color: var(--text-primary);
}

.actions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.action-card {
    background: var(--card-bg);
    padding: 25px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    text-decoration: none;
    color: var(--text-primary);
    transition: all 0.3s;
    border: 2px solid transparent;
}

.action-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.action-icon {
    font-size: 2.5rem;
    display: block;
    margin-bottom: 15px;
}

.action-card h3 {
    margin-bottom: 10px;
    color: var(--primary-color);
}

.action-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.activity-list {
    background: var(--card-bg);
    padding: 20px;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

/* Cards */
.card {
    background: var(--card-bg);
    padding: 25px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    margin-bottom: 20px;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
    flex-wrap: wrap;
    gap: 15px;
}

.page-header h2 {
    color: var(--text-primary);
}

/* Buttons */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s;
    font-weight: 500;
}

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

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

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

.btn-secondary:hover {
    background: #475569;
}

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

.btn-danger:hover {
    background: #dc2626;
}

.filter-buttons {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-primary);
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.form-actions {
    display: flex;
    gap: 15px;
    justify-content: flex-end;
    margin-top: 25px;
}

/* Search */
.search-box {
    margin-bottom: 25px;
}

.search-box input {
    width: 100%;
    padding: 15px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
}

/* Students Grid */
.students-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.student-card {
    background: var(--card-bg);
    padding: 20px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: all 0.3s;
    border: 2px solid transparent;
}

.student-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.student-card h3 {
    color: var(--primary-color);
    margin-bottom: 10px;
}

.student-info {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 5px;
}

.student-actions {
    display: flex;
    gap: 10px;
    margin-top: 15px;
}

.student-actions .btn {
    flex: 1;
    padding: 8px 16px;
    font-size: 0.9rem;
}

/* Chronic Students Grid */
.chronic-students-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 20px;
}

.chronic-student-card {
    background: var(--card-bg);
    padding: 25px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    border-right: 4px solid var(--warning-color);
}

.chronic-student-card h3 {
    color: var(--primary-color);
    margin-bottom: 15px;
}

.chronic-info {
    margin-bottom: 15px;
}

.chronic-info-item {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid var(--border-color);
}

.chronic-info-item:last-child {
    border-bottom: none;
}

.chronic-actions {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}

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

.data-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--card-bg);
    border-radius: 8px;
    overflow: hidden;
}

.data-table thead {
    background: var(--primary-color);
    color: white;
}

.data-table th,
.data-table td {
    padding: 12px;
    text-align: right;
}

.data-table tbody tr {
    border-bottom: 1px solid var(--border-color);
    transition: background 0.2s;
}

.data-table tbody tr:hover {
    background: #f1f5f9;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1055 !important;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    overflow: auto;
}

.modal.show {
    display: block !important;
}

.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1050 !important;
    width: 100vw;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.5);
}

.modal-dialog {
    position: relative;
    z-index: 1056 !important;
    margin: 1.75rem auto;
    max-width: 500px;
}

.modal-content {
    position: relative;
    z-index: 1056 !important;
}

.modal-content {
    background-color: var(--card-bg);
    margin: 5% auto;
    padding: 0;
    border-radius: 12px;
    width: 90%;
    max-width: 600px;
    box-shadow: var(--shadow-lg);
    animation: modalSlideIn 0.3s;
}

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

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 25px;
    border-bottom: 2px solid var(--border-color);
}

.modal-header h2 {
    color: var(--text-primary);
}

.close {
    color: var(--text-secondary);
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    transition: color 0.3s;
}

.close:hover {
    color: var(--text-primary);
}

.modal-content form {
    padding: 25px;
}

/* Student Profile */
.student-info-card {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 30px;
    border-radius: 12px;
    margin-bottom: 30px;
    box-shadow: var(--shadow-lg);
}

.student-info-card h2 {
    margin-bottom: 20px;
    font-size: 1.8rem;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
}

.info-item {
    display: flex;
    gap: 10px;
}

.info-label {
    font-weight: 600;
    opacity: 0.9;
}

.profile-sections {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.profile-section h3 {
    margin-bottom: 20px;
    color: var(--text-primary);
    font-size: 1.3rem;
}

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

.reading-item {
    padding: 15px;
    background: #f8fafc;
    border-radius: 8px;
    margin-bottom: 10px;
    border-right: 4px solid var(--primary-color);
}

.reading-item-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
}

.reading-value {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
}

/* Reports */
.reports-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 30px;
    border-bottom: 2px solid var(--border-color);
}

.tab-btn {
    padding: 15px 25px;
    background: none;
    border: none;
    border-bottom: 3px solid transparent;
    cursor: pointer;
    font-size: 1rem;
    color: var(--text-secondary);
    transition: all 0.3s;
    font-weight: 500;
}

.tab-btn:hover {
    color: var(--primary-color);
}

.tab-btn.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.report-section {
    display: none;
}

.report-section.active {
    display: block;
}

.report-date-selector {
    margin-bottom: 25px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.report-date-selector label {
    font-weight: 500;
}

.report-date-selector input {
    padding: 10px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
}

.report-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 40px;
    color: var(--text-secondary);
    font-style: italic;
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }

    header h1 {
        font-size: 1.5rem;
    }

    .main-nav {
        flex-direction: column;
    }

    .nav-item {
        width: 100%;
    }

    .page-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .students-grid,
    .chronic-students-grid {
        grid-template-columns: 1fr;
    }

    .data-table {
        font-size: 0.9rem;
    }

    .modal-content {
        width: 95%;
        margin: 10% auto;
    }
}