/* ==========================================================
   Education Management System - Custom Styles
   Kenyan CBC Curriculum 
   ========================================================== */

:root {
    --primary-color: #4f46e5;
    --primary-dark: #3730a3;
    --primary-light: #818cf8;
    --secondary-color: #0ea5e9;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --info-color: #6366f1;
    --dark-color: #1e293b;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    --border-radius: 0.5rem;
    --card-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --card-shadow-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--gray-50);
    color: var(--gray-800);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Navigation */
.navbar {
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    padding: 0.6rem 1rem;
}

.navbar-brand {
    font-size: 1.25rem;
    letter-spacing: -0.025em;
}

.navbar .nav-link {
    font-size: 0.875rem;
    font-weight: 500;
    padding: 0.5rem 0.75rem !important;
    border-radius: var(--border-radius);
    transition: all 0.2s;
}

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

.navbar .nav-link i {
    margin-right: 0.35rem;
    font-size: 0.875rem;
}

.dropdown-menu {
    border: none;
    box-shadow: 0 10px 15px -3px rgba(0,0,0,0.1);
    border-radius: var(--border-radius);
    padding: 0.5rem;
}

.dropdown-item {
    border-radius: 0.375rem;
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    font-weight: 500;
}

.dropdown-item i {
    width: 1.25rem;
    text-align: center;
    margin-right: 0.5rem;
}

.dropdown-item:hover {
    background-color: var(--gray-100);
}

/* Cards */
.card {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
    transition: all 0.3s ease;
}

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

.card-header {
    background-color: white;
    border-bottom: 1px solid var(--gray-200);
    padding: 1rem 1.25rem;
    font-weight: 600;
}

.card-body {
    padding: 1.25rem;
}

/* Stat Cards */
.stat-card {
    border-left: 4px solid var(--primary-color);
    border-radius: var(--border-radius);
}

.stat-card .stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.stat-card .stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    line-height: 1.2;
}

.stat-card .stat-label {
    font-size: 0.875rem;
    color: var(--gray-500);
    font-weight: 500;
}

/* Tables */
.table th {
    font-weight: 600;
    font-size: 0.8125rem;
    text-transform: uppercase;
    letter-spacing: 0.025em;
    color: var(--gray-500);
    border-top: none;
    white-space: nowrap;
}

.table td {
    vertical-align: middle;
    font-size: 0.875rem;
}

.dataTables_wrapper .dataTables_filter input {
    border: 1px solid var(--gray-300);
    border-radius: var(--border-radius);
    padding: 0.375rem 0.75rem;
}

.dataTables_wrapper .dataTables_filter input:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

/* Buttons */
.btn {
    font-weight: 500;
    font-size: 0.875rem;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    transition: all 0.2s;
}

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

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

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

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

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

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

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

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

/* Forms */
.form-control, .form-select {
    border: 1px solid var(--gray-300);
    border-radius: var(--border-radius);
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.form-label {
    font-weight: 500;
    font-size: 0.875rem;
    color: var(--gray-700);
    margin-bottom: 0.375rem;
}

/* Badges */
.badge {
    font-weight: 500;
    padding: 0.35em 0.65em;
    font-size: 0.75rem;
}

/* Alerts */
.alert {
    border: none;
    border-radius: var(--border-radius);
    font-size: 0.875rem;
}

.alert-success {
    background-color: #ecfdf5;
    color: #065f46;
}

.alert-danger {
    background-color: #fef2f2;
    color: #991b1b;
}

.alert-warning {
    background-color: #fffbeb;
    color: #92400e;
}

.alert-info {
    background-color: #eef2ff;
    color: #3730a3;
}

/* Login Page */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    padding: 2rem;
}

.login-card {
    width: 100%;
    max-width: 420px;
    border-radius: 1rem;
    overflow: hidden;
}

.login-card .card-body {
    padding: 2.5rem;
}

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

.login-logo i {
    font-size: 3rem;
    color: var(--primary-color);
    background: var(--gray-100);
    padding: 1rem;
    border-radius: 1rem;
}

/* Checklists & Marks */
.checklist-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem;
    border-radius: var(--border-radius);
    transition: background-color 0.2s;
}

.checklist-item:hover {
    background-color: var(--gray-100);
}

/* Print Styles */
@media print {
    .navbar, .footer, .no-print {
        display: none !important;
    }
    .card {
        box-shadow: none !important;
        border: 1px solid #ddd !important;
    }
}

/* ==========================================================
   Responsive Improvements - Device & User Friendly
   ========================================================== */

/* Better touch targets for mobile */
@media (max-width: 576px) {
    .btn {
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
    }
    
    .btn-sm {
        padding: 0.4rem 0.6rem;
        font-size: 0.8rem;
    }
    
    .btn-group-sm .btn {
        padding: 0.35rem 0.5rem;
        font-size: 0.75rem;
    }
    
    .form-control, .form-select {
        font-size: 16px !important; /* Prevent iOS zoom on focus */
        padding: 0.6rem 0.75rem;
    }
    
    .card-body {
        padding: 0.85rem;
    }
    
    .card-header {
        padding: 0.75rem 0.85rem;
        font-size: 0.9rem;
    }
    
    h4.fw-bold {
        font-size: 1.2rem !important;
    }
    
    .stat-card .stat-value {
        font-size: 1.3rem;
    }
    
    .stat-card .stat-icon {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
    }
    
    .stat-card .stat-label {
        font-size: 0.8rem;
    }
    
    .empty-state {
        padding: 2rem 0.75rem;
    }
    
    .empty-state i {
        font-size: 2.5rem;
    }
    
    .table th, .table td {
        font-size: 0.78rem;
        padding: 0.5rem 0.4rem !important;
    }
    
    .badge {
        font-size: 0.7rem;
        padding: 0.25em 0.5em;
    }
    
    .modal-dialog {
        margin: 0.5rem;
    }
    
    .modal-body {
        padding: 1rem;
    }
    
    .modal-header, .modal-footer {
        padding: 0.75rem 1rem;
    }
    
    /* Page title area */
    .d-flex.justify-content-between.align-items-center.mb-4 {
        flex-direction: column;
        align-items: flex-start !important;
        gap: 0.75rem;
    }
    
    .d-flex.justify-content-between.align-items-center.mb-4 .d-flex.gap-2 {
        width: 100%;
        flex-wrap: wrap;
    }
    
    .d-flex.justify-content-between.align-items-center.mb-4 .d-flex.gap-2 .btn {
        flex: 1;
        text-align: center;
        min-width: 120px;
    }
    
    /* Fix dataTables on mobile */
    .dataTables_wrapper .dataTables_length,
    .dataTables_wrapper .dataTables_filter {
        float: none !important;
        text-align: left !important;
        margin-bottom: 0.5rem;
    }
    
    .dataTables_wrapper .dataTables_filter input {
        width: 100% !important;
        max-width: 100% !important;
    }
    
    .dataTables_wrapper .dataTables_info {
        float: none !important;
        text-align: left !important;
        font-size: 0.78rem;
        padding-top: 0.5rem;
    }
    
    .dataTables_wrapper .dataTables_paginate {
        float: none !important;
        text-align: left !important;
        padding-top: 0.5rem;
    }
    
    .dataTables_wrapper .dataTables_paginate .paginate_button {
        padding: 0.25rem 0.5rem !important;
        font-size: 0.78rem !important;
    }
    
    /* Admin tiles on mobile */
    .admin-tile {
        padding: 0.75rem !important;
    }
    
    .admin-tile-icon {
        width: 40px !important;
        height: 40px !important;
        font-size: 1rem !important;
    }
    
    .admin-tile-info h6 {
        font-size: 0.8rem !important;
    }
    
    /* Quick action buttons */
    .btn-outline-primary.w-100.py-3,
    .btn-outline-success.w-100.py-3,
    .btn-outline-warning.w-100.py-3,
    .btn-outline-info.w-100.py-3 {
        padding: 0.75rem !important;
        font-size: 0.85rem;
    }
    
    .btn-outline-primary.w-100.py-3 i.fa-lg,
    .btn-outline-success.w-100.py-3 i.fa-lg,
    .btn-outline-warning.w-100.py-3 i.fa-lg,
    .btn-outline-info.w-100.py-3 i.fa-lg {
        font-size: 1.2rem !important;
    }
}

@media (max-width: 768px) {
    .navbar .navbar-nav .nav-link {
        padding: 0.5rem 0.75rem !important;
    }
    
    .card-body {
        padding: 1rem;
    }
    
    .stat-card .stat-value {
        font-size: 1.5rem;
    }

    .login-card .card-body {
        padding: 1.5rem;
    }
    
    /* Filter forms stack better */
    .row.g-3 .col-md-2,
    .row.g-3 .col-md-3,
    .row.g-3 .col-md-4,
    .row.g-3 .col-md-6 {
        margin-bottom: 0.25rem;
    }
    
    /* Fix filter form labels on mobile */
    .card.mb-4 .card-body .row.g-3 .form-label {
        font-size: 0.78rem;
        margin-bottom: 0.2rem;
    }
    
    /* DataTables on tablets */
    .dataTables_wrapper .dataTables_filter input {
        max-width: 200px;
    }
}

/* Medium devices (tablets, 768px-991px) */
@media (min-width: 768px) and (max-width: 991px) {
    .stat-card .stat-value {
        font-size: 1.5rem;
    }
    
    .admin-tile {
        padding: 0.85rem !important;
    }
}

/* Fix navigation dropdown on mobile */
@media (max-width: 991px) {
    .navbar .dropdown-menu {
        border: none;
        box-shadow: none;
        padding-left: 1rem;
        background: transparent;
    }
    
    .navbar-dark .navbar-nav .dropdown-menu .dropdown-item {
        color: rgba(255,255,255,0.85);
    }
    
    .navbar-dark .navbar-nav .dropdown-menu .dropdown-item:hover {
        background: rgba(255,255,255,0.1);
        color: white;
    }
    
    .navbar-dark .navbar-nav .dropdown-menu .dropdown-header {
        color: rgba(255,255,255,0.6);
    }
    
    .navbar-dark .navbar-nav .dropdown-menu .dropdown-divider {
        border-color: rgba(255,255,255,0.1);
    }
    
    .navbar .container-fluid {
        padding-left: 0.75rem;
        padding-right: 0.75rem;
    }
    
    main.container-fluid.py-4 {
        padding-left: 0.75rem !important;
        padding-right: 0.75rem !important;
    }
    
    /* User dropdown on mobile */
    .navbar-nav.ms-auto .dropdown-menu {
        padding-left: 0;
    }
}

/* Miscellaneous */
.page-header {
    background: white;
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
    margin-bottom: 1.5rem;
}

.content-card {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
}

.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--gray-400);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.empty-state h5 {
    color: var(--gray-600);
}

/* Footer */
.footer {
    margin-top: auto;
    font-size: 0.85rem;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--gray-100);
}

::-webkit-scrollbar-thumb {
    background: var(--gray-300);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gray-400);
}

/* Utility Classes for Better Mobile Display */
.text-truncate-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.text-truncate-3 {
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Better card click areas on mobile */
.card.clickable {
    cursor: pointer;
}

@media (hover: none) {
    .card:hover {
        box-shadow: var(--card-shadow);
    }
    .admin-tile:hover {
        transform: none;
    }
    .feature-card:hover {
        transform: none;
    }
}

/* Fix for long words breaking layout */
.table td, .table th, .card-text, p {
    word-break: break-word;
}

/* Better spacing for stacked cards on mobile */
.row.g-4 > [class*="col-"] {
    margin-bottom: 0.5rem;
}

/* Print improvements */
@media print {
    body {
        font-size: 11px !important;
    }
    .table td, .table th {
        padding: 4px !important;
    }
}