/**
 * Phase 9 — App theme (AdminLTE overlay)
 * Clean institutional look for Faculty of Science, Burapha University
 */

:root {
    --brand-primary: #1a6b6b;
    --brand-primary-dark: #134f4f;
    --brand-primary-soft: #c6d7d6;
    --brand-accent: #d4a017;
    --brand-accent-soft: #f7e5b0;
    --brand-accent-dark: #b8860b;
    --surface: #ffffff;
    --surface-muted: #f5f7f7;
    --surface-page: #eef2f2;
    --text: #1f2933;
    --text-muted: #5f6c72;
    --border: #d7e0df;
    --success: #2e7d4f;
    --danger: #c62828;
    --info: #1e6f8c;
    --warning: #c9a227;
    --radius: 0.5rem;
    --radius-lg: 0.75rem;
    --shadow: 0 1px 3px rgba(31, 41, 51, 0.08);
    --shadow-md: 0 4px 14px rgba(31, 41, 51, 0.1);
    /* Keep in sync with AdminLTE content margin overrides below */
    --sidebar-width: 250px;
    --font-sans: 'Google Sans', system-ui, -apple-system, sans-serif;
    --toast-max: min(100vw - 2rem, 36rem);
    --focus-ring: 0 0 0 0.2rem rgba(26, 107, 107, 0.25);
}

/* Base */
html {
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-sans) !important;
    color: var(--text);
    background-color: var(--surface-page);
}

a {
    color: var(--brand-primary);
}

a:hover {
    color: var(--brand-primary-dark);
}

/* Content shell */
.content-wrapper {
    background: var(--surface-page) !important;
}

.content-wrapper > .content {
    padding-bottom: 1.5rem;
}

.content > .container-fluid {
    max-width: 100%;
}

@media (max-width: 767.98px) {
    .content-header {
        padding: 0.5rem 0.75rem;
    }

    .content > .container-fluid {
        padding-left: 0.75rem;
        padding-right: 0.75rem;
        margin-top: 0.5rem !important;
    }
}

/* Navbar */
.main-header.navbar.app-navbar {
    background: linear-gradient(90deg, var(--brand-primary) 0%, #248080 100%) !important;
    border-bottom: none;
    box-shadow: var(--shadow);
    min-height: 3.25rem;
}

.main-header.navbar.app-navbar .nav-link,
.main-header.navbar.app-navbar .navbar-brand,
.main-header.navbar.app-navbar .btn-link {
    color: #fff !important;
}

.main-header.navbar.app-navbar .btn-outline-light {
    border-color: rgba(255, 255, 255, 0.65);
    color: #fff;
}

.main-header.navbar.app-navbar .btn-outline-light:hover {
    background: rgba(255, 255, 255, 0.15);
    color: #fff;
}

.main-header.navbar.app-navbar .btn-app-disbursement {
    background: var(--brand-accent-soft);
    border: 1px solid var(--brand-accent);
    color: var(--text);
    border-radius: var(--radius);
    font-weight: 600;
}

.main-header.navbar.app-navbar .btn-app-disbursement:hover {
    background: var(--brand-accent);
    color: #fff;
}

.main-header.navbar.app-navbar .navbar-toggler {
    min-width: 2.75rem;
    min-height: 2.75rem;
}

@media (max-width: 991.98px) {
    .main-header.navbar.app-navbar .navbar-collapse {
        background: var(--brand-primary-dark);
        margin: 0.5rem -0.75rem -0.5rem;
        padding: 0.75rem;
        border-radius: 0 0 var(--radius) var(--radius);
    }

    .main-header.navbar.app-navbar .navbar-nav .nav-item {
        width: 100%;
    }

    .main-header.navbar.app-navbar .navbar-nav .btn {
        width: 100%;
        justify-content: flex-start !important;
    }

    .main-header.navbar.app-navbar .dropdown-menu {
        width: 100%;
        position: static !important;
        float: none;
        transform: none !important;
    }
}

/* Sidebar */
.main-sidebar.app-sidebar {
    background: linear-gradient(180deg, var(--brand-accent-soft) 0%, var(--brand-primary-soft) 70%, #e8f0ef 100%) !important;
    box-shadow: var(--shadow);
    width: var(--sidebar-width);
    /* clip (not hidden) — avoids forcing overflow-y away from visible */
    overflow-x: clip;
}

.main-sidebar.app-sidebar .sidebar {
    /*
     * AdminLTE uses overflow-y:auto only → browsers compute overflow-x:auto.
     * Hovering the menu reveals the vertical scrollbar (~15px), which shrinks
     * content width and triggers an ugly horizontal scrollbar.
     */
    overflow-x: clip !important;
    overflow-y: auto !important;
    overscroll-behavior-x: none;
    padding-left: 0.5rem;
    padding-right: 0.5rem;
    box-sizing: border-box;
    max-width: 100%;
    /* Reserve gutter so hover-reveal scrollbar does not shrink content */
    scrollbar-gutter: stable;
}

.main-sidebar.app-sidebar .sidebar > * {
    max-width: 100%;
}

.main-sidebar.app-sidebar .brand-link,
.main-sidebar.app-sidebar .app-sidebar-brand {
    display: block;
    padding: 0.75rem 0.75rem 0;
    text-align: center;
    border-bottom: none;
    overflow: hidden;
    max-width: 100%;
}

.main-sidebar.app-sidebar .app-sidebar-brand img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
}

.main-sidebar.app-sidebar .app-user-name {
    color: var(--text);
    font-size: 0.95rem;
    font-weight: 700;
    margin: 0.75rem 0 0;
    padding: 0 0.5rem;
    text-align: center;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.main-sidebar.app-sidebar .app-user-name u {
    text-decoration: none;
    border-bottom: 2px solid var(--brand-accent);
}

.main-sidebar.app-sidebar .nav-sidebar {
    width: 100%;
    max-width: 100%;
    overflow: hidden;
}

.main-sidebar.app-sidebar .nav-sidebar .nav-item {
    max-width: 100%;
}

.main-sidebar.app-sidebar .nav-sidebar .nav-link {
    color: var(--text) !important;
    border-radius: var(--radius);
    margin: 0.15rem 0;
    padding-left: 0.75rem;
    padding-right: 2.5rem;
    box-sizing: border-box;
    max-width: 100%;
    /* Allow Thai labels to wrap; badge/chevron stay via AdminLTE .right */
    white-space: normal;
    overflow: hidden;
    line-height: 1.35;
}

.main-sidebar.app-sidebar .nav-sidebar .nav-link:hover {
    background: rgba(255, 255, 255, 0.55) !important;
    color: var(--brand-primary-dark) !important;
}

.main-sidebar.app-sidebar .nav-sidebar .nav-link.active {
    background: var(--brand-primary) !important;
    color: #fff !important;
}

.main-sidebar.app-sidebar .nav-sidebar .nav-link.active .nav-icon,
.main-sidebar.app-sidebar .nav-sidebar .nav-link.active p {
    color: #fff !important;
}

.main-sidebar.app-sidebar .nav-sidebar .nav-link > p {
    display: inline;
    margin: 0;
    white-space: normal;
    word-break: break-word;
}

.main-sidebar.app-sidebar .nav-sidebar .nav-link .badge {
    white-space: nowrap;
    vertical-align: middle;
}

.main-sidebar.app-sidebar .nav-sidebar .nav-link > p > .right.badge {
    top: 50%;
    transform: translateY(-50%);
}

/* Rely on AdminLTE nav-child-indent; do not add extra left margin */
.main-sidebar.app-sidebar .nav-sidebar .nav-treeview {
    overflow: hidden;
}

.main-sidebar.app-sidebar .nav-sidebar .nav-treeview > .nav-item > .nav-link {
    margin-left: 0;
}

.main-sidebar.app-sidebar .app-menu-section {
    display: block;
    margin: 1rem 0 0.35rem;
    padding: 0.35rem 0.5rem;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    color: var(--brand-primary-dark);
    border-left: 3px solid var(--brand-accent);
    background: rgba(255, 255, 255, 0.35);
    border-radius: 0 var(--radius) var(--radius) 0;
    overflow: hidden;
    white-space: normal;
    line-height: 1.35;
    word-break: break-word;
}

.main-sidebar.app-sidebar .badge-danger {
    background-color: var(--danger);
}

/* Mini-collapse: hide custom chrome; keep overflow clipped while hover-expanding */
@media (min-width: 992px) {
    .sidebar-mini.sidebar-collapse .main-sidebar.app-sidebar {
        overflow-x: clip !important;
    }

    .sidebar-mini.sidebar-collapse .main-sidebar.app-sidebar .app-user-name,
    .sidebar-mini.sidebar-collapse .main-sidebar.app-sidebar .app-menu-section {
        display: none;
    }

    .sidebar-mini.sidebar-collapse .main-sidebar.app-sidebar:hover .app-user-name,
    .sidebar-mini.sidebar-collapse .main-sidebar.app-sidebar.sidebar-focused .app-user-name {
        display: block;
    }

    .sidebar-mini.sidebar-collapse .main-sidebar.app-sidebar:hover .app-menu-section,
    .sidebar-mini.sidebar-collapse .main-sidebar.app-sidebar.sidebar-focused .app-menu-section {
        display: block;
    }

    .sidebar-mini.sidebar-collapse .main-sidebar.app-sidebar .app-sidebar-brand img {
        max-width: 2.75rem;
        margin: 0.5rem auto;
    }

    .sidebar-mini.sidebar-collapse .main-sidebar.app-sidebar:hover .app-sidebar-brand img,
    .sidebar-mini.sidebar-collapse .main-sidebar.app-sidebar.sidebar-focused .app-sidebar-brand img {
        max-width: 100%;
        margin: 0 auto;
    }
}

@media (max-width: 767.98px) {
    .main-sidebar,
    .main-sidebar.app-sidebar,
    .main-sidebar.app-sidebar::before {
        width: min(var(--sidebar-width), 88vw);
        margin-left: calc(-1 * min(var(--sidebar-width), 88vw));
    }

    .sidebar-open .main-sidebar,
    .sidebar-open .main-sidebar.app-sidebar,
    .sidebar-open .main-sidebar.app-sidebar::before {
        margin-left: 0;
    }

    body:not(.sidebar-collapse) .content-wrapper,
    body:not(.sidebar-collapse) .main-footer,
    body:not(.sidebar-collapse) .main-header {
        margin-left: 0 !important;
    }
}

/* Cards */
.card {
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    background: var(--surface);
}

.card > .card-header {
    background: var(--surface-muted);
    border-bottom: 1px solid var(--border);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.card-header h3,
.card-header .card-title {
    margin: 0;
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text);
}

.card-body.card-info,
.card-body.card-warning,
.card.card-info > .card-body {
    background: var(--surface);
}

.card-footer {
    background: var(--surface-muted);
    border-top: 1px solid var(--border);
}

/* Tables */
.table {
    color: var(--text);
    background: var(--surface);
}

.table thead th,
.table thead.bg-warning th,
.table .bg-warning,
tr.bg-warning > th,
tr.bg-warning > td {
    background-color: var(--brand-accent-soft) !important;
    color: var(--text) !important;
    border-color: var(--border) !important;
    font-weight: 700;
    vertical-align: middle;
}

.table .bg-success,
.bg-success {
    background-color: #d9efe3 !important;
    color: var(--success) !important;
}

.table .bg-danger,
.bg-danger {
    background-color: #fde8e8 !important;
    color: var(--danger) !important;
}

.table .bg-info,
.bg-info,
.table-primary,
.table .table-primary > th,
.table .table-primary > td {
    background-color: #dceef4 !important;
    color: var(--info) !important;
}

.table-warning,
.table .table-warning > th,
.table .table-warning > td {
    background-color: var(--brand-accent-soft) !important;
    color: var(--text) !important;
}

.table-bordered th,
.table-bordered td {
    border-color: var(--border);
}

.table-responsive {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

@media (max-width: 767.98px) {
    .table th,
    .table td {
        padding: 0.45rem 0.5rem;
        font-size: 0.9rem;
    }

    .list-group-item {
        padding: 0.45rem 0.65rem;
        font-size: 0.9rem;
    }
}

/* Forms */
.form-control,
.custom-select,
.select2-container--bootstrap4 .select2-selection {
    border-color: var(--border);
    border-radius: var(--radius);
    color: var(--text);
}

.form-control:focus,
.custom-select:focus {
    border-color: var(--brand-primary);
    box-shadow: var(--focus-ring);
}

.form-group.row > [class*='col-'] {
    margin-bottom: 0.5rem;
}

@media (max-width: 575.98px) {
    .form-group.row > .col-form-label,
    .form-group.row > [class*='col-sm-'],
    .form-group.row > [class*='col-md-'] {
        flex: 0 0 100%;
        max-width: 100%;
    }

    .card-footer .btn {
        display: inline-block;
        width: 100%;
        margin: 0.25rem 0;
    }
}

/* Buttons */
.btn {
    border-radius: var(--radius);
    font-weight: 600;
}

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

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

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

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

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

.btn-warning {
    background-color: var(--brand-accent);
    border-color: var(--brand-accent);
    color: #fff;
}

.btn-warning:hover {
    background-color: var(--brand-accent-dark);
    border-color: var(--brand-accent-dark);
    color: #fff;
}

/* Footer */
.main-footer.app-footer {
    background: var(--surface);
    border-top: 1px solid var(--border);
    color: var(--text-muted);
    padding: 0.85rem 1rem;
}

.main-footer.app-footer .app-footer-help {
    color: var(--danger);
    font-weight: 700;
}

.main-footer.app-footer .app-footer-contact {
    color: var(--brand-primary);
    font-weight: 600;
}

.main-footer.app-footer a {
    color: var(--brand-primary-dark);
}

/* Toast — responsive */
.app-toast-host {
    position: fixed;
    top: 50%;
    left: 50%;
    z-index: 10000;
    transform: translate(-50%, -50%);
    width: var(--toast-max);
    max-width: var(--toast-max);
    padding: 0 0.5rem;
    pointer-events: none;
}

.app-toast-host .toast {
    pointer-events: auto;
    width: 100% !important;
    max-width: 100% !important;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border: none;
    overflow: hidden;
}

.app-toast-host .toast-body {
    width: 100% !important;
    max-width: 100% !important;
    min-height: 5rem;
    height: auto !important;
    padding: 1.25rem 1rem;
}

.app-toast-host .toast-body h1 {
    font-size: clamp(1.1rem, 4vw, 1.75rem);
    margin: 0;
    line-height: 1.4;
    word-break: break-word;
}

.app-toast-success {
    background-color: #d6f0e0 !important;
}

.app-toast-success .toast-header {
    background-color: #d6f0e0 !important;
    border-bottom: 1px solid #849b8d !important;
}

.app-toast-error {
    background-color: #facfd1 !important;
}

.app-toast-error .toast-header {
    background-color: #f9e1e5 !important;
}

/* Login page */
.login-page-app {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background:
        linear-gradient(160deg, rgba(238, 242, 242, 0.92) 0%, rgba(198, 215, 214, 0.75) 45%, rgba(247, 229, 176, 0.55) 100%),
        radial-gradient(circle at top right, rgba(212, 160, 23, 0.18), transparent 45%);
    font-family: var(--font-sans);
    color: var(--text);
}

.login-page-app .login-topbar {
    background: linear-gradient(90deg, var(--brand-accent) 0%, #e0b94a 100%);
    box-shadow: var(--shadow);
    padding: 0.65rem 1rem;
}

.login-page-app .login-topbar .navbar-brand img {
    width: min(220px, 58vw);
    height: auto;
}

.login-page-app .login-form-bar {
    display: flex;
    flex-wrap: wrap;
    align-items: stretch;
    gap: 0.5rem;
    width: 100%;
    max-width: 52rem;
    margin-left: auto;
}

.login-page-app .login-field {
    display: flex;
    align-items: center;
    flex: 1 1 10rem;
    min-width: 0;
    background: #fff;
    border-radius: var(--radius);
    border: 1px solid rgba(0, 0, 0, 0.08);
    overflow: hidden;
}

.login-page-app .login-field .input-group-text {
    background: var(--surface-muted);
    border: none;
    color: var(--text-muted);
}

.login-page-app .login-field .form-control {
    border: none;
    box-shadow: none;
    min-height: 2.75rem;
}

.login-page-app .btn-login {
    flex: 0 0 auto;
    min-height: 2.75rem;
    padding: 0.55rem 1.25rem;
    background: var(--brand-primary);
    border: none;
    border-radius: var(--radius);
    color: #fff;
    font-weight: 700;
}

.login-page-app .btn-login:hover,
.login-page-app .btn-login:focus {
    background: var(--brand-primary-dark);
    color: #fff;
}

.login-page-app .login-error {
    flex: 1 1 100%;
    background: #fde8e8;
    color: var(--danger);
    border: 1px solid #f5c2c7;
    border-radius: var(--radius);
    padding: 0.65rem 0.85rem;
    margin: 0;
}

.login-page-app .login-main {
    flex: 1;
    padding: 1.25rem 1rem 2rem;
}

.login-page-app .login-card {
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    background: var(--surface);
    overflow: hidden;
}

.login-page-app .login-card-head {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
    padding: 1rem;
    background: var(--surface-muted);
    border-bottom: 1px solid var(--border);
}

.login-page-app .login-panel {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem;
    text-align: center;
}

.login-page-app .login-panel .calendar-icon {
    font-size: 2rem;
    color: var(--brand-accent);
    margin-bottom: 0.35rem;
}

.login-page-app .login-panel h1 {
    font-size: clamp(1.1rem, 2.5vw, 1.5rem);
    margin: 0;
    font-weight: 700;
    color: var(--brand-primary-dark);
}

.login-page-app .faculty-select {
    width: 100%;
    min-height: 2.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 0.55rem 0.75rem;
    font-size: 1rem;
    background: #fff;
}

.login-page-app .faculty-select:focus {
    border-color: var(--brand-primary);
    outline: none;
    box-shadow: var(--focus-ring);
}

.login-page-app .login-card-body {
    padding: 1rem;
}

@media (max-width: 767.98px) {
    .login-page-app .login-topbar .navbar-collapse {
        margin-top: 0.75rem;
    }

    .login-page-app .login-form-bar {
        max-width: none;
    }

    .login-page-app .login-field,
    .login-page-app .btn-login {
        flex: 1 1 100%;
        width: 100%;
    }

    .login-page-app .login-card-head {
        grid-template-columns: 1fr;
    }

    .login-page-app .login-main {
        padding-top: 1rem;
    }
}

/* Utility helpers for high-traffic pages */
.app-page-title {
    font-size: clamp(1.15rem, 2.5vw, 1.4rem);
    font-weight: 700;
    color: var(--text);
    margin: 0 0 0.75rem;
}

.app-alert {
    border-radius: var(--radius);
    border: none;
}

.blink-text {
    animation: app-soft-pulse 2.4s ease-in-out infinite;
}

@keyframes app-soft-pulse {
    0%,
    100% {
        opacity: 1;
    }
    50% {
        opacity: 0.65;
    }
}