/* ==========================================================================
   Home Visit System (ระบบเยี่ยมบ้านนักเรียน) - Modern Unified UI/UX Stylesheet
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Kanit:wght@300;400;500;600;700&family=Prompt:wght@300;400;500;600;700&display=swap');

/* --- Design Tokens / CSS Variables --- */
:root {
    --font-primary: 'Prompt', 'Kanit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-heading: 'Kanit', 'Prompt', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

    /* Palette */
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-light: #eff6ff;
    --primary-gradient: linear-gradient(135deg, #2563eb 0%, #3b82f6 100%);
    --brand-gradient: linear-gradient(135deg, #1e3a8a 0%, #2563eb 55%, #06b6d4 100%);

    --secondary: #475569;
    --secondary-hover: #334155;
    --secondary-light: #f1f5f9;

    --success: #10b981;
    --success-hover: #059669;
    --success-light: #ecfdf5;
    --success-gradient: linear-gradient(135deg, #059669 0%, #10b981 100%);

    --info: #0284c7;
    --info-hover: #0369a1;
    --info-light: #f0f9ff;
    --info-gradient: linear-gradient(135deg, #0284c7 0%, #38bdf8 100%);

    --warning: #f59e0b;
    --warning-hover: #d97706;
    --warning-light: #fffbeb;

    --danger: #ef4444;
    --danger-hover: #dc2626;
    --danger-light: #fef2f2;

    /* Backgrounds & Surfaces */
    --bg-body: #f8fafc;
    --bg-surface: #ffffff;
    --bg-alt: #f1f5f9;
    --border-color: #e2e8f0;
    --border-color-subtle: #f1f5f9;

    /* Text Colors */
    --text-main: #0f172a;
    --text-muted: #64748b;
    --text-light: #94a3b8;

    /* Shapes & Shadows */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-pill: 50rem;

    --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.07), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
    --shadow-lg: 0 10px 25px -3px rgba(15, 23, 42, 0.08), 0 4px 10px -4px rgba(15, 23, 42, 0.04);
    --shadow-xl: 0 20px 35px -5px rgba(15, 23, 42, 0.1), 0 10px 15px -5px rgba(15, 23, 42, 0.04);
}

/* --- Base & Reset --- */
html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-primary);
    background-color: var(--bg-body);
    color: var(--text-main);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    color: var(--text-main);
    letter-spacing: -0.02em;
}

/* Layout container */
.container {
    max-width: 1280px;
}

.main-content-wrapper {
    flex: 1 0 auto;
    padding-bottom: 3rem;
}

/* --- Navigation Bar --- */
.navbar-custom {
    background-color: #0f172a !important;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    padding: 0.75rem 0;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.navbar-brand {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.35rem;
    color: #ffffff !important;
    display: flex;
    align-items: center;
    gap: 0.65rem;
    letter-spacing: -0.01em;
    text-decoration: none;
    transition: opacity 0.2s;
}

.navbar-brand:hover {
    opacity: 0.92;
}

.brand-icon-box {
    width: 38px;
    height: 38px;
    border-radius: var(--radius-md);
    background: var(--brand-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: 1.1rem;
    box-shadow: 0 4px 10px rgba(37, 99, 235, 0.35);
}

.navbar-toggler {
    border: none;
    padding: 0.5rem;
    color: #ffffff;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.06);
    transition: all 0.2s;
}

.navbar-toggler:focus {
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.4);
}

.navbar-toggler-icon {
    filter: invert(1);
}

.navbar-nav .nav-link {
    font-family: var(--font-primary);
    font-weight: 500;
    font-size: 0.95rem;
    color: #cbd5e1 !important;
    padding: 0.6rem 0.9rem !important;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    gap: 0.45rem;
    transition: all 0.2s ease;
}

.navbar-nav .nav-link:hover {
    color: #ffffff !important;
    background-color: rgba(255, 255, 255, 0.08);
}

.navbar-nav .nav-link.active {
    color: #ffffff !important;
    background-color: rgba(37, 99, 235, 0.3);
    font-weight: 600;
    box-shadow: inset 0 -2px 0 #60a5fa;
}

/* User profile chip in navbar */
.user-profile-badge {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    background: rgba(255, 255, 255, 0.07);
    border: 1px solid rgba(255, 255, 255, 0.12);
    padding: 0.35rem 0.85rem;
    border-radius: var(--radius-pill);
    color: #f1f5f9;
    font-size: 0.85rem;
    font-weight: 500;
}

.user-role-tag {
    background: rgba(37, 99, 235, 0.4);
    color: #bfdbfe;
    font-size: 0.72rem;
    font-weight: 600;
    padding: 0.15rem 0.5rem;
    border-radius: var(--radius-pill);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.btn-logout-nav {
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #fca5a5 !important;
    font-weight: 500;
    font-size: 0.85rem;
    padding: 0.4rem 0.9rem;
    border-radius: var(--radius-pill);
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    text-decoration: none;
}

.btn-logout-nav:hover {
    background: #ef4444;
    border-color: #ef4444;
    color: #ffffff !important;
    transform: translateY(-1px);
}

/* --- Cards & Panels --- */
.card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: box-shadow 0.25s ease, transform 0.25s ease;
    overflow: hidden;
    margin-bottom: 1.5rem;
}

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

.card-header {
    background-color: #ffffff;
    border-bottom: 1px solid var(--border-color);
    padding: 1.1rem 1.5rem;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1.15rem;
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.card-header.text-bg-success,
.card-header.bg-success {
    background: var(--success-gradient) !important;
    color: #ffffff !important;
    border-bottom: none;
}

.card-header.text-bg-primary,
.card-header.bg-primary {
    background: var(--primary-gradient) !important;
    color: #ffffff !important;
    border-bottom: none;
}

.card-header.text-bg-dark,
.card-header.bg-dark {
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%) !important;
    color: #ffffff !important;
    border-bottom: none;
}

.card-header.bg-info,
.card-header.text-bg-info {
    background: var(--info-gradient) !important;
    color: #ffffff !important;
    border-bottom: none;
}

.card-body {
    padding: 1.5rem;
}

/* Stat Metric Cards (Dashboard) */
.stat-card {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.4rem;
    display: flex;
    align-items: center;
    gap: 1.2rem;
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s, box-shadow 0.2s;
    height: 100%;
}

.stat-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.stat-icon {
    width: 54px;
    height: 54px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.stat-icon-blue {
    background-color: var(--primary-light);
    color: var(--primary);
}

.stat-icon-green {
    background-color: var(--success-light);
    color: var(--success);
}

.stat-icon-amber {
    background-color: var(--warning-light);
    color: var(--warning);
}

.stat-icon-cyan {
    background-color: var(--info-light);
    color: var(--info);
}

.stat-value {
    font-family: var(--font-heading);
    font-size: 1.9rem;
    font-weight: 700;
    line-height: 1.1;
    color: var(--text-main);
    margin-bottom: 0.2rem;
}

.stat-label {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-muted);
}

/* --- Form Controls & Mobile Friendly Inputs --- */
.form-label {
    font-weight: 500;
    font-size: 0.92rem;
    color: #334155;
    margin-bottom: 0.4rem;
    display: inline-block;
}

.form-control,
.form-select {
    font-family: var(--font-primary);
    font-size: 1rem;
    min-height: 46px;
    border-radius: var(--radius-sm);
    border: 1.5px solid var(--border-color);
    padding: 0.65rem 1rem;
    color: var(--text-main);
    background-color: #ffffff;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3.5px rgba(37, 99, 235, 0.15);
    outline: none;
}

/* Touch-friendly Choice Cards (Radio & Checkbox) */
.form-check {
    min-height: 44px;
    padding: 0.7rem 1rem 0.7rem 2.5rem;
    margin-bottom: 0.6rem;
    background: #ffffff;
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    position: relative;
}

.form-check:hover {
    background: #f8fafc;
    border-color: #cbd5e1;
}

.form-check-input {
    width: 1.25rem;
    height: 1.25rem;
    margin-left: -1.75rem;
    margin-top: 0;
    accent-color: var(--primary);
    cursor: pointer;
    border: 1.5px solid #94a3b8;
}

.form-check-input:checked {
    background-color: var(--primary);
    border-color: var(--primary);
}

.form-check:has(.form-check-input:checked) {
    background-color: var(--primary-light);
    border-color: var(--primary);
    color: var(--primary-hover);
    font-weight: 500;
}

.form-check-label {
    cursor: pointer;
    font-size: 0.95rem;
    user-select: none;
    width: 100%;
}

/* Sections inside multi-part form */
.form-section-card {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    margin-bottom: 1.25rem;
    box-shadow: var(--shadow-sm);
}

.form-section-title {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--primary-light);
}

/* --- Buttons --- */
.btn {
    font-family: var(--font-primary);
    font-weight: 500;
    font-size: 0.95rem;
    min-height: 42px;
    padding: 0.6rem 1.25rem;
    border-radius: var(--radius-sm);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: all 0.2s ease;
    cursor: pointer;
    border: none;
    text-decoration: none;
}

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

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

.btn-primary {
    background: var(--primary-gradient);
    color: #ffffff !important;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #1d4ed8 0%, #2563eb 100%);
    box-shadow: 0 6px 16px rgba(37, 99, 235, 0.35);
}

.btn-success {
    background: var(--success-gradient);
    color: #ffffff !important;
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.25);
}

.btn-success:hover {
    background: linear-gradient(135deg, #059669 0%, #10b981 100%);
    box-shadow: 0 6px 16px rgba(16, 185, 129, 0.35);
}

.btn-secondary {
    background: #64748b;
    color: #ffffff !important;
}

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

.btn-info {
    background: var(--info-gradient);
    color: #ffffff !important;
    box-shadow: 0 4px 12px rgba(2, 132, 199, 0.25);
}

.btn-outline-primary {
    background: transparent;
    border: 1.5px solid var(--primary);
    color: var(--primary) !important;
}

.btn-outline-primary:hover {
    background: var(--primary);
    color: #ffffff !important;
}

.btn-sm {
    min-height: 34px;
    font-size: 0.85rem;
    padding: 0.35rem 0.85rem;
    border-radius: var(--radius-sm);
}

/* --- Tables --- */
.table-responsive {
    border-radius: var(--radius-md);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    border: 1px solid var(--border-color);
    background: #ffffff;
}

.table {
    margin-bottom: 0;
    font-size: 0.95rem;
    vertical-align: middle;
}

.table thead th {
    background-color: #f8fafc;
    color: #475569;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.9rem;
    padding: 0.85rem 1rem;
    border-bottom: 1.5px solid var(--border-color);
    white-space: nowrap;
}

.table tbody td {
    padding: 0.85rem 1rem;
    border-bottom: 1px solid var(--border-color-subtle);
    color: var(--text-main);
}

.table-striped tbody tr:nth-of-type(odd) {
    background-color: #ffffff;
}

.table-striped tbody tr:nth-of-type(even) {
    background-color: #fcfdfe;
}

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

/* --- Soft Badges --- */
.badge {
    font-family: var(--font-primary);
    font-weight: 500;
    font-size: 0.82rem;
    padding: 0.35rem 0.75rem;
    border-radius: var(--radius-pill);
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    line-height: 1.2;
}

.badge-soft-success {
    background-color: #dcfce7 !important;
    color: #15803d !important;
    border: 1px solid #bbf7d0;
}

.badge-soft-warning {
    background-color: #fef3c7 !important;
    color: #b45309 !important;
    border: 1px solid #fde68a;
}

.badge-soft-info {
    background-color: #e0f2fe !important;
    color: #0369a1 !important;
    border: 1px solid #bae6fd;
}

.badge-soft-primary {
    background-color: #dbeafe !important;
    color: #1d4ed8 !important;
    border: 1px solid #bfdbfe;
}

.badge-soft-danger {
    background-color: #fee2e2 !important;
    color: #b91c1c !important;
    border: 1px solid #fecaca;
}

/* Legacy badge compatibility */
.badge.bg-success {
    background-color: #dcfce7 !important;
    color: #15803d !important;
    border: 1px solid #bbf7d0;
}

.badge.bg-warning {
    background-color: #fef3c7 !important;
    color: #b45309 !important;
    border: 1px solid #fde68a;
}

/* --- Leaflet Map Container --- */
#map {
    height: 380px;
    width: 100%;
    border-radius: var(--radius-md);
    border: 1.5px solid var(--border-color);
    margin-top: 1rem;
    box-shadow: var(--shadow-sm);
    z-index: 1;
}

/* --- Login Page Special UI --- */
.login-page-body {
    background: radial-gradient(circle at top, #1e3a8a 0%, #0f172a 100%);
    min-height: 100vh;
}

.login-card {
    border: none;
    border-radius: var(--radius-xl);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    background: #ffffff;
    overflow: hidden;
}

.login-card-header {
    background: var(--brand-gradient);
    color: #ffffff;
    padding: 2.2rem 1.5rem 1.8rem;
    text-align: center;
}

.login-logo-circle {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-pill);
    background: rgba(255, 255, 255, 0.2);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
    font-size: 1.8rem;
    backdrop-filter: blur(8px);
}

.login-card-body {
    padding: 2.2rem 2rem;
}

/* --- Floating Back to Top Button --- */
.btn-back-to-top {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-pill);
    background: var(--primary);
    color: #ffffff;
    display: none;
    align-items: center;
    justify-content: center;
    box-shadow: 0 6px 16px rgba(37, 99, 235, 0.4);
    z-index: 1040;
    transition: all 0.2s ease;
    border: none;
}

.btn-back-to-top:hover {
    background: var(--primary-hover);
    transform: translateY(-3px);
    color: #ffffff;
}

/* --- Mobile Responsiveness Adjustments --- */
@media (max-width: 768px) {
    body {
        font-size: 15px;
    }

    .container.mt-4 {
        margin-top: 1rem !important;
        padding-left: 12px;
        padding-right: 12px;
    }

    .card {
        border-radius: var(--radius-md);
        margin-bottom: 1rem;
    }

    .card-header {
        font-size: 1.05rem;
        padding: 0.9rem 1.1rem;
    }

    .card-body {
        padding: 1.1rem;
    }

    .stat-card {
        padding: 1rem;
    }

    .stat-value {
        font-size: 1.6rem;
    }

    .stat-icon {
        width: 46px;
        height: 46px;
        font-size: 1.25rem;
    }

    /* Full width buttons on mobile forms */
    .btn-mobile-block {
        width: 100%;
    }

    .navbar-brand span {
        font-size: 1.15rem;
    }

    .user-profile-badge {
        flex-direction: column;
        align-items: flex-start;
        padding: 0.6rem 0.8rem;
        border-radius: var(--radius-md);
        width: 100%;
        margin-bottom: 0.5rem;
    }

    /* Form choice cards slightly more compact on phone */
    .form-check {
        padding: 0.6rem 0.85rem 0.6rem 2.4rem;
        margin-bottom: 0.5rem;
    }

    #map {
        height: 280px;
    }
}