/* Shishu Sabha Management System - Design System */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Noto+Sans+Gujarati:wght@400;500;600;700&display=swap');

:root {
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-light: #eff6ff;
    --secondary: #475569;
    --accent: #f59e0b;
    --success: #10b981;
    --success-bg: #ecfdf5;
    --warning: #f59e0b;
    --warning-bg: #fffbeb;
    --danger: #ef4444;
    --danger-bg: #fef2f2;
    --info: #06b6d4;
    --info-bg: #ecfeff;
    
    --bg-main: #f8fafc;
    --bg-card: #ffffff;
    --bg-sidebar: #0f172a;
    --text-dark: #0f172a;
    --text-muted: #64748b;
    --text-light: #f8fafc;
    --border-color: #e2e8f0;
    
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px 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);
    
    --font-main: 'Inter', 'Noto Sans Gujarati', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

body {
    font-family: var(--font-main);
    background-color: var(--bg-main);
    color: var(--text-dark);
    line-height: 1.5;
    font-size: 15px;
}

/* App Layout */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.app-sidebar {
    width: 260px;
    background-color: var(--bg-sidebar);
    color: var(--text-light);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    transition: all 0.3s ease;
}

.app-sidebar.collapsed {
    margin-left: -260px;
    opacity: 0;
    visibility: hidden;
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    gap: 12px;
}

.sidebar-brand-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 20px;
    color: white;
}

.sidebar-brand-title {
    font-size: 16px;
    font-weight: 700;
    line-height: 1.2;
    color: white;
}

.sidebar-brand-subtitle {
    font-size: 11px;
    color: #94a3b8;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.sidebar-nav {
    flex: 1;
    padding: 15px 10px;
    overflow-y: auto;
}

.nav-section-title {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: #64748b;
    padding: 10px 12px 6px;
    font-weight: 600;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    color: #cbd5e1;
    text-decoration: none;
    border-radius: var(--radius-sm);
    font-weight: 500;
    margin-bottom: 4px;
    transition: all 0.2s ease;
}

.nav-item:hover {
    background-color: rgba(255, 255, 255, 0.08);
    color: white;
}

.nav-item.active {
    background-color: var(--primary);
    color: white;
    font-weight: 600;
}

.nav-icon {
    width: 20px;
    text-align: center;
    font-size: 16px;
}

.sidebar-user {
    padding: 15px 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    background-color: rgba(0, 0, 0, 0.2);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.user-info {
    overflow: hidden;
}

.user-name {
    font-weight: 600;
    font-size: 14px;
    white-space: nowrap;
    text-overflow: ellipsis;
    overflow: hidden;
    color: white;
}

.user-role {
    font-size: 12px;
    color: #94a3b8;
    text-transform: capitalize;
}

.logout-btn {
    color: #ef4444;
    text-decoration: none;
    padding: 6px;
    border-radius: var(--radius-sm);
    font-size: 18px;
}

.logout-btn:hover {
    background-color: rgba(239, 68, 68, 0.1);
}

/* Main Content Layout */
.main-wrapper {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

.top-navbar {
    background-color: white;
    border-bottom: 1px solid var(--border-color);
    padding: 12px 30px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: var(--shadow-sm);
}

.page-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-dark);
}

.main-content {
    padding: 30px;
    flex: 1;
}

/* Flash Messages */
.alert {
    padding: 14px 18px;
    border-radius: var(--radius-md);
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-weight: 500;
    box-shadow: var(--shadow-sm);
}

.alert-success {
    background-color: var(--success-bg);
    color: #065f46;
    border: 1px solid #a7f3d0;
}

.alert-danger {
    background-color: var(--danger-bg);
    color: #991b1b;
    border: 1px solid #fecaca;
}

.alert-warning {
    background-color: var(--warning-bg);
    color: #92400e;
    border: 1px solid #fde68a;
}

.alert-info {
    background-color: var(--info-bg);
    color: #155e75;
    border: 1px solid #a5f3fc;
}

/* Cards & Statistics */
.card {
    background-color: var(--bg-card);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    padding: 24px;
    margin-bottom: 24px;
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 18px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

.card-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-dark);
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 20px;
    margin-bottom: 24px;
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 24px;
}

.stat-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

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

.stat-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
}

.stat-icon.primary { background: #dbeafe; color: var(--primary); }
.stat-icon.success { background: #d1fae5; color: var(--success); }
.stat-icon.danger { background: #fee2e2; color: var(--danger); }
.stat-icon.warning { background: #fef3c7; color: var(--warning); }

.stat-value {
    font-size: 24px;
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-dark);
}

.stat-label {
    font-size: 13px;
    color: var(--text-muted);
    font-weight: 500;
}

/* Tables */
.table-responsive {
    width: 100%;
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
    text-align: left;
}

.table th {
    background-color: #f1f5f9;
    padding: 12px 16px;
    font-weight: 600;
    color: #475569;
    border-bottom: 2px solid var(--border-color);
    white-space: nowrap;
}

.table td {
    padding: 14px 16px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-dark);
    vertical-align: middle;
}

.table tbody tr:hover {
    background-color: #f8fafc;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 18px;
    font-size: 14px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s ease;
}

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

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

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

.btn-success:hover {
    background-color: #059669;
}

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

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

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

.btn-secondary:hover {
    background-color: #f1f5f9;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 13px;
}

/* Badges */
.badge {
    display: inline-block;
    padding: 4px 10px;
    font-size: 12px;
    font-weight: 600;
    border-radius: 20px;
    text-transform: capitalize;
}

.badge-success { background-color: var(--success-bg); color: #047857; border: 1px solid #a7f3d0; }
.badge-danger { background-color: var(--danger-bg); color: #b91c1c; border: 1px solid #fecaca; }
.badge-warning { background-color: var(--warning-bg); color: #b45309; border: 1px solid #fde68a; }
.badge-info { background-color: var(--info-bg); color: #0e7490; border: 1px solid #a5f3fc; }
.badge-secondary { background-color: #f1f5f9; color: #475569; border: 1px solid #cbd5e1; }

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

.form-label {
    display: block;
    margin-bottom: 6px;
    font-weight: 600;
    font-size: 14px;
    color: var(--text-dark);
}

.form-control, .form-select {
    width: 100%;
    padding: 10px 14px;
    font-size: 14px;
    font-family: inherit;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background-color: white;
    color: var(--text-dark);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-control:focus, .form-select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
}

/* Custom Radio / Checkbox for Attendance */
.attendance-toggle-group {
    display: flex;
    gap: 8px;
}

.attendance-toggle-btn {
    flex: 1;
    padding: 8px 12px;
    text-align: center;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-weight: 600;
    font-size: 13px;
    user-select: none;
    transition: all 0.2s ease;
}

.attendance-toggle-input {
    display: none;
}

.attendance-toggle-input[value="present"]:checked + .attendance-toggle-btn {
    background-color: var(--success);
    color: white;
    border-color: var(--success);
}

.attendance-toggle-input[value="absent"]:checked + .attendance-toggle-btn {
    background-color: var(--danger);
    color: white;
    border-color: var(--danger);
}

.attendance-toggle-input[value="leave"]:checked + .attendance-toggle-btn {
    background-color: var(--warning);
    color: white;
    border-color: var(--warning);
}

/* Responsive & Mobile Breakpoints */
@media (max-width: 1200px) {
    .main-content {
        padding: 20px;
    }
    .grid-4 {
        grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    }
}

@media (max-width: 991px) {
    .app-sidebar {
        position: fixed;
        top: 0;
        left: -280px;
        height: 100vh;
        z-index: 999;
        box-shadow: 4px 0 15px rgba(0,0,0,0.2);
    }

    .app-sidebar.active {
        left: 0;
    }

    .top-navbar {
        padding: 10px 16px;
    }

    .main-content {
        padding: 16px;
    }

    .grid-2 {
        grid-template-columns: 1fr;
    }

    .grid-4 {
        grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    }

    .meta-box {
        grid-template-columns: repeat(2, 1fr) !important;
    }
}

@media (max-width: 768px) {
    .page-title {
        font-size: 16px;
    }

    .btn {
        padding: 10px 14px;
        font-size: 13.5px;
        min-height: 40px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }

    .card {
        padding: 16px;
        margin-bottom: 16px;
    }

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

    .hide-mobile-text {
        display: none;
    }

    .user-header-name {
        max-width: 110px;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    /* Sticky columns & smooth table panning for phones */
    .table-responsive {
        -webkit-overflow-scrolling: touch;
        border-radius: var(--radius-sm);
        border: 1px solid var(--border-color);
        overflow-x: auto;
        width: 100%;
        margin-bottom: 15px;
    }

    .filter-bar {
        flex-direction: column;
        align-items: stretch;
    }
}

@media (max-width: 576px) {
    .top-navbar {
        flex-wrap: wrap;
        gap: 8px;
    }

    .grid-4 {
        grid-template-columns: 1fr;
    }

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

    .meta-box {
        grid-template-columns: 1fr !important;
    }
}

/* Print Utilities */
@media print {
    html, body {
        background-color: white !important;
        font-size: 10pt !important;
        height: auto !important;
        overflow: visible !important;
    }
    .app-sidebar, .top-navbar, .no-print, .alert {
        display: none !important;
    }
    .app-container, .main-wrapper, .main-content, .table-responsive {
        display: block !important;
        position: static !important;
        width: 100% !important;
        margin: 0 !important;
        padding: 0 !important;
        overflow: visible !important;
        min-height: auto !important;
        float: none !important;
    }
    table {
        page-break-inside: auto !important;
        break-inside: auto !important;
    }
    tr {
        page-break-inside: avoid !important;
        break-inside: avoid !important;
    }
    thead {
        display: table-header-group !important;
    }
    .no-print, .no-print *, .top-navbar, .app-sidebar, .sidebar, nav, header, footer, .btn, form, .alert, .badge-checkbox, .filter-bar {
        display: none !important;
        visibility: hidden !important;
        height: 0 !important;
        margin: 0 !important;
        padding: 0 !important;
    }
}