/*
 * สไตล์หน้าเว็บไซต์ (ฝั่งผู้เข้าชม)
 * ใช้ร่วมกับ vendor/bootstrap/bootstrap.min.css (Bootstrap 5.3 ที่ปรับสีตามเว็บไซต์แล้ว)
 * สีประจำเว็บไซต์ (--brand) ตั้งค่าได้จากหลังบ้าน › ตั้งค่าพื้นฐาน
 */

:root {
    --brand: #f2b705;
    --brand-ink: #1d2a33;
    --ink: #1d2a33;
    --muted: #5b6870;
    --mist: #f3f5f2;
    --line: #dce1dc;
    --teal: #0b6e6c;
    --band: 6px;
    --radius: .5rem;
    --radius-sm: .375rem;
    --radius-lg: .75rem;
}

body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    text-rendering: optimizeLegibility;
}

main {
    flex: 1 0 auto;
}

img {
    max-width: 100%;
}

:focus-visible {
    outline: 3px solid var(--teal);
    outline-offset: 2px;
}

.skip-link {
    position: absolute;
    top: .5rem;
    left: .5rem;
    z-index: 1100;
    padding: .5rem 1rem;
    background: var(--ink);
    color: #fff;
    transform: translateY(-200%);
}

.skip-link:focus {
    transform: none;
}

/* ---------- ส่วนหัว ---------- */
.site-header {
    background: #fff;
}

.site-header__bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
}

.site-brand {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding-block: 1.25rem;
    color: var(--ink);
    text-decoration: none;
    min-width: 0;
}

.site-brand:hover {
    color: var(--ink);
    text-decoration: none;
}

.site-brand img {
    height: 72px;
    width: auto;
    flex-shrink: 0;
}

.site-brand__title {
    display: block;
    font-size: clamp(1.15rem, 2.4vw, 1.6rem);
    font-weight: 600;
    line-height: 1.3;
}

.site-brand__subtitle {
    display: block;
    color: var(--muted);
    font-size: .95rem;
    line-height: 1.5;
}

.site-search {
    flex: 0 1 320px;
    position: relative;
}

.site-search .form-control {
    padding-right: 2.75rem;
    border-radius: 999px;
    background: var(--mist);
    border-color: var(--mist);
}

.site-search .form-control:focus {
    background: #fff;
}

.site-search .btn {
    position: absolute;
    right: .25rem;
    top: 50%;
    transform: translateY(-50%);
    border: 0;
    color: var(--muted);
}

/* แถบเมนูสีประจำเว็บไซต์ — องค์ประกอบหลักของอัตลักษณ์ */
.site-nav {
    background: var(--brand);
    color: var(--brand-ink);
    --bs-navbar-color: var(--brand-ink);
    --bs-navbar-hover-color: var(--brand-ink);
    --bs-navbar-active-color: var(--brand-ink);
    --bs-navbar-padding-y: 0;
}

.site-nav .nav-link {
    padding: .9rem 1rem !important;
    font-weight: 500;
    border-bottom: 3px solid transparent;
}

.site-nav .nav-link:hover,
.site-nav .nav-link:focus-visible,
.site-nav .nav-link.active,
.site-nav .nav-link.show {
    border-bottom-color: var(--brand-ink);
}

.site-nav .navbar-toggler {
    border-color: currentColor;
    color: var(--brand-ink);
    margin-block: .5rem;
}

.site-nav__search {
    color: var(--brand-ink);
    border: 1px solid currentColor;
    margin-left: auto;
    margin-right: .5rem;
}

.site-nav .dropdown-menu {
    border: 0;
    border-top: var(--band) solid var(--brand);
    border-radius: 0 0 var(--radius) var(--radius);
    box-shadow: 0 12px 28px rgba(29, 42, 51, .16);
    padding-block: .5rem;
    margin-top: 0 !important;
}

.site-nav .dropdown-item {
    padding: .5rem 1.25rem;
    white-space: normal;
}

.site-nav .dropdown-item:active {
    background: var(--mist);
    color: var(--ink);
}

.mega-menu__heading {
    font-size: 1rem;
    font-weight: 600;
    margin: 0 0 .5rem;
    padding: 0 1.25rem;
}

.mega-menu ul {
    list-style: none;
    padding: 0;
    margin: 0 0 1rem;
}

@media (min-width: 992px) {
    .mega-menu {
        position: static !important;
    }

    .mega-menu > .dropdown-menu {
        left: 0;
        right: 0;
        width: 100%;
        padding: 1.5rem 0;
    }
}

/* ---------- หน้าแรก ---------- */
.hero {
    background: var(--ink);
}

.hero .carousel-item img {
    display: block;
    width: 100%;
    height: auto;
    aspect-ratio: 1920 / 476;
    object-fit: cover;
}

.hero .carousel-indicators [data-bs-target] {
    width: 28px;
    height: 4px;
    border: 0;
    background-color: #fff;
}

/* ทางลัด: แถบใต้ภาพสไลด์ */
.quick-links {
    border-bottom: 1px solid var(--line);
}

.quick-links ul {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    list-style: none;
    margin: 0;
    padding: 0;
}

.quick-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: .6rem;
    padding: 1rem .5rem;
    color: var(--ink);
    font-weight: 500;
    text-decoration: none;
    border-bottom: 3px solid transparent;
}

.quick-links a:hover {
    border-bottom-color: var(--brand);
    background: var(--mist);
}

.quick-links i {
    color: var(--teal);
    font-size: 1.15rem;
}

@media (min-width: 768px) {
    .quick-links ul {
        grid-template-columns: repeat(var(--quick-count, 4), 1fr);
    }

    .quick-links li + li a {
        border-left: 1px solid var(--line);
    }
}

.section {
    padding-block: clamp(2.5rem, 6vw, 4.5rem);
}

.section--mist {
    background: var(--mist);
}

.section__head {
    display: flex;
    flex-wrap: wrap;
    align-items: end;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1.75rem;
}

.section__title {
    margin: 0;
    padding-left: .9rem;
    border-left: var(--band) solid var(--brand);
    line-height: 1.2;
}

.section__more {
    font-weight: 500;
    color: var(--ink);
    white-space: nowrap;
}

.tabs-line {
    gap: .25rem 1.5rem;
    border-bottom: 1px solid var(--line);
    margin-bottom: 1.5rem;
    flex-wrap: nowrap;
    overflow-x: auto;
    scrollbar-width: none;
}

.tabs-line .nav-link {
    padding: .5rem 0;
    border: 0;
    border-bottom: 3px solid transparent;
    border-radius: 0;
    background: none;
    color: var(--muted);
    font-weight: 500;
    white-space: nowrap;
}

.tabs-line .nav-link:hover {
    color: var(--ink);
}

.tabs-line .nav-link.active {
    color: var(--ink);
    border-bottom-color: var(--brand);
}

/* การ์ดข่าว: รูป + วันที่ + หัวข้อ (ไม่มีเงา) */
.news-card {
    position: relative;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.news-card__media {
    aspect-ratio: 273 / 170;
    overflow: hidden;
    border-radius: var(--radius);
    background: var(--mist);
}

.news-card__media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .3s ease;
}

.news-card__date {
    margin-top: .75rem;
    color: var(--muted);
    font-size: .875rem;
}

.news-card__title {
    margin: .25rem 0 0;
    font-size: 1.05rem;
    font-weight: 500;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-card__title a {
    color: var(--ink);
}

.news-card__title a::after {
    content: "";
    position: absolute;
    inset: 0;
}

.news-card:hover img {
    transform: scale(1.04);
}

.news-card:hover .news-card__title a {
    text-decoration: underline;
    text-decoration-color: var(--brand);
    text-decoration-thickness: 2px;
    text-underline-offset: 4px;
}

/* หลักสูตรหน้าแรก: รายการแบบตาราง เน้นชื่อหลักสูตร */
.program-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1px;
    background: var(--line);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.program-list__item {
    display: flex;
    flex-direction: column;
    gap: .15rem;
    padding: 1.25rem 1.5rem;
    background: #fff;
    color: var(--ink);
    text-decoration: none;
    border-left: 4px solid transparent;
}

.program-list__item:hover {
    border-left-color: var(--brand);
    color: var(--ink);
    text-decoration: none;
}

.program-list__degree {
    color: var(--teal);
    font-size: .85rem;
    font-weight: 500;
}

.program-list__title {
    font-weight: 600;
    font-size: 1.05rem;
    line-height: 1.5;
}

.program-list__en {
    color: var(--muted);
    font-size: .875rem;
    line-height: 1.5;
}

/* แถวภาพกิจกรรมเลื่อนแนวนอน (scroll-snap) */
.scroller {
    position: relative;
}

.scroller__track {
    display: grid;
    grid-auto-flow: column;
    grid-auto-columns: minmax(240px, 1fr);
    gap: 1.25rem;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scroll-behavior: smooth;
    padding-bottom: .75rem;
    scrollbar-width: thin;
}

.scroller__track > * {
    scroll-snap-align: start;
}

@media (min-width: 768px) {
    .scroller__track {
        grid-auto-columns: calc((100% - 2 * 1.25rem) / 3);
    }
}

@media (min-width: 1200px) {
    .scroller__track {
        grid-auto-columns: calc((100% - 3 * 1.25rem) / 4);
    }
}

.scroller__controls {
    display: flex;
    gap: .5rem;
}

.btn-round {
    width: 2.5rem;
    height: 2.5rem;
    padding: 0;
    border-radius: 50%;
    display: inline-grid;
    place-items: center;
}

.activity-card {
    position: relative;
}

.activity-card__media {
    aspect-ratio: 480 / 361;
    overflow: hidden;
    border-radius: var(--radius);
    background: var(--line);
}

.activity-card__media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.activity-card__title {
    margin: .75rem 0 0;
    font-size: 1rem;
    font-weight: 500;
    line-height: 1.6;
}

.activity-card__title a {
    color: var(--ink);
}

.activity-card__title a::after {
    content: "";
    position: absolute;
    inset: 0;
}

.activity-card__date {
    color: var(--muted);
    font-size: .875rem;
}

.video-item iframe {
    border: 0;
    border-radius: var(--radius);
}

.video-item__title {
    margin: .75rem 0 0;
    font-size: 1rem;
    font-weight: 500;
}

.video-item__title a {
    color: var(--ink);
}

.video-card {
    position: relative;
}

.video-card__media {
    position: relative;
    display: block;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    border-radius: var(--radius);
    background: var(--ink);
}

.video-card__media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: .9;
}

.video-card__play {
    position: absolute;
    inset: 0;
    margin: auto;
    width: 3.25rem;
    height: 3.25rem;
    display: grid;
    place-items: center;
    border-radius: 50%;
    background: var(--brand);
    color: var(--brand-ink);
    font-size: 1.1rem;
}

.video-card__title {
    margin: .75rem 0 0;
    font-size: 1rem;
    font-weight: 500;
    line-height: 1.6;
}

.video-card__title a {
    color: var(--ink);
}

/* ---------- หน้าเนื้อหา ---------- */
.page-head {
    background: var(--mist);
    border-bottom: 1px solid var(--line);
    padding-block: 2rem 1.75rem;
}

.page-head h1 {
    font-size: clamp(1.6rem, 3.6vw, 2.25rem);
    margin: 0;
    max-width: 48rem;
}

.page-head .breadcrumb {
    margin-bottom: .75rem;
    font-size: .9rem;
}

.page-head__meta {
    margin-top: .5rem;
    color: var(--muted);
}

/* เนื้อหาจากตัวแก้ไขข้อความ */
.prose {
    max-width: 48rem;
    font-size: 1.0625rem;
    overflow-wrap: anywhere;
}

.prose img {
    height: auto;
    border-radius: var(--radius);
}

.prose a {
    text-decoration: underline;
    text-underline-offset: 3px;
}

.prose table {
    width: 100%;
    margin-bottom: 1rem;
    border-collapse: collapse;
}

.prose td,
.prose th {
    border: 1px solid var(--line);
    padding: .5rem;
}

.prose iframe {
    max-width: 100%;
}

/* วีดิโอที่ฝังไว้จากระบบเดิม (iframe ขนาดตายตัว) */
.prose iframe[src*="youtube"],
.prose iframe[src*="facebook"],
.youtube-iframe iframe,
.facebook-iframe iframe {
    width: 100%;
    height: auto;
    aspect-ratio: 16 / 9;
    border: 0;
    border-radius: var(--radius);
}

.search-bar {
    max-width: 32rem;
    width: 100%;
}

.search-bar--wide {
    max-width: 44rem;
}

.photo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: .75rem;
}

.photo-grid a {
    display: block;
    aspect-ratio: 400 / 266;
    overflow: hidden;
    border-radius: var(--radius-sm);
}

.photo-grid img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .3s ease;
}

.photo-grid a:hover img {
    transform: scale(1.05);
}

.empty-state {
    padding: 3rem 1rem;
    text-align: center;
    color: var(--muted);
    border: 1px dashed var(--line);
    border-radius: var(--radius-lg);
}

.share {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--line);
    color: var(--muted);
    font-size: .95rem;
}

.share a,
.share .btn {
    color: var(--ink);
    font-size: 1.25rem;
}

/* หลักสูตร */
.degree-heading {
    display: flex;
    align-items: baseline;
    gap: .75rem;
    font-size: 1.5rem;
    margin-bottom: 1.25rem;
    padding-bottom: .5rem;
    border-bottom: 1px solid var(--line);
}

.degree-heading span {
    font-size: .95rem;
    font-weight: 400;
    color: var(--muted);
}

.program-card {
    position: relative;
    height: 100%;
    display: flex;
    flex-direction: column;
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: #fff;
}

.program-card__media {
    aspect-ratio: 16 / 10;
    background: var(--mist);
}

.program-card__media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.program-card__body {
    padding: 1.25rem 1.25rem 1.5rem;
    border-top: 4px solid var(--brand);
}

.program-card__title {
    font-size: 1.15rem;
    margin: 0;
    line-height: 1.5;
}

.program-card__title a {
    color: var(--ink);
}

.program-card__title a::after {
    content: "";
    position: absolute;
    inset: 0;
}

.program-card__en {
    margin: .25rem 0 0;
    color: var(--muted);
    font-size: .9rem;
}

.program-card__summary {
    margin: .75rem 0 0;
    font-size: .95rem;
}

/* บุคลากร */
.staff-filter {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: .75rem;
    margin-bottom: 2rem;
}

.staff-filter .form-select {
    width: auto;
    min-width: 16rem;
}

.staff-group + .staff-group {
    margin-top: 3rem;
}

.staff-group .section__title {
    margin-bottom: 1.5rem;
}

.staff-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
    gap: 2rem 1.5rem;
}

.staff-card {
    text-align: center;
}

.staff-card__photo {
    aspect-ratio: 4 / 5;
    border-radius: var(--radius);
    overflow: hidden;
    background: var(--mist);
    display: grid;
    place-items: center;
    margin-bottom: .9rem;
}

.staff-card__photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.staff-card__photo span {
    font-size: 3rem;
    font-weight: 600;
    color: var(--muted);
}

.staff-card__name {
    font-size: 1.05rem;
    margin: 0;
    line-height: 1.5;
}

.staff-card__position {
    margin: .2rem 0 0;
    color: var(--teal);
    font-size: .9rem;
    font-weight: 500;
}

.staff-card__education {
    margin: .5rem 0 0;
    color: var(--muted);
    font-size: .85rem;
    line-height: 1.6;
}

.staff-card__contact {
    display: flex;
    flex-direction: column;
    gap: .15rem;
    margin: .5rem 0 0;
    font-size: .85rem;
    overflow-wrap: anywhere;
}

.staff-mini {
    list-style: none;
    padding: 0;
    margin: 0 0 1rem;
    display: grid;
    gap: .75rem;
}

.staff-mini li {
    display: flex;
    align-items: center;
    gap: .75rem;
}

.staff-mini img,
.staff-mini__initial {
    width: 56px;
    height: 70px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}

.staff-mini__initial {
    display: grid;
    place-items: center;
    background: var(--mist);
    color: var(--muted);
    font-weight: 600;
}

.staff-mini strong {
    display: block;
    font-weight: 500;
    line-height: 1.4;
}

.staff-mini small {
    color: var(--muted);
}

/* เอกสารดาวน์โหลด */
.doc-list {
    list-style: none;
    padding: 0;
    margin: 0;
    border-top: 1px solid var(--line);
}

.doc-list__item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: .9rem .25rem;
    border-bottom: 1px solid var(--line);
}

.doc-list__icon {
    font-size: 1.75rem;
    width: 2rem;
    text-align: center;
    flex-shrink: 0;
}

.doc-list__body {
    flex: 1;
    min-width: 0;
}

.doc-list__title {
    display: block;
    color: var(--ink);
    font-weight: 500;
    line-height: 1.5;
}

.doc-list__meta {
    color: var(--muted);
    font-size: .85rem;
}

/* เมนูข้างของหน้าเนื้อหา */
.side-menu {
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.side-menu__title {
    margin: 0;
    padding: .9rem 1.25rem;
    font-size: 1rem;
    background: var(--brand);
    color: var(--brand-ink);
}

.side-menu ul {
    list-style: none;
    padding: .5rem 0;
    margin: 0;
}

.side-menu a {
    display: block;
    padding: .5rem 1.25rem;
    color: var(--ink);
    border-left: 3px solid transparent;
}

.side-menu a[aria-current="page"] {
    border-left-color: var(--brand);
    background: var(--mist);
    font-weight: 500;
}

/* ติดต่อ */
.contact-address {
    line-height: 1.9;
}

.contact-list {
    list-style: none;
    padding: 0;
    margin: 1.5rem 0 0;
    display: grid;
    gap: .6rem;
}

.contact-list i {
    width: 1.5rem;
    color: var(--teal);
}

.form-panel {
    background: var(--mist);
    border-radius: var(--radius-lg);
    padding: clamp(1.25rem, 4vw, 2rem);
}

.search-results {
    list-style: none;
    padding: 0;
    margin: 0;
}

.search-results li {
    padding: .75rem 0;
    border-bottom: 1px solid var(--line);
}

.search-results a {
    font-weight: 500;
    font-size: 1.05rem;
}

.search-results p {
    margin: .25rem 0 0;
    color: var(--muted);
    font-size: .925rem;
}

.error-page {
    text-align: center;
    max-width: 36rem;
}

.error-page__code {
    font-size: clamp(4rem, 12vw, 7rem);
    font-weight: 600;
    line-height: 1;
    margin: 0 0 1rem;
    color: var(--brand);
    -webkit-text-stroke: 2px var(--ink);
}

/* ---------- ส่วนท้าย ---------- */
.site-footer {
    background: var(--ink);
    color: rgba(255, 255, 255, .78);
    border-top: var(--band) solid var(--brand);
    padding-top: 3rem;
    font-size: .95rem;
}

.site-footer h2 {
    color: #fff;
    font-size: 1.1rem;
    margin-bottom: 1rem;
}

.site-footer a {
    color: #fff;
}

.site-footer__brand {
    display: inline-flex;
    align-items: center;
    gap: .9rem;
    margin-bottom: 1rem;
    color: #fff;
    font-weight: 600;
    line-height: 1.4;
    text-decoration: none;
}

.site-footer__brand img {
    height: 56px;
    width: auto;
    background: #fff;
    border-radius: var(--radius-sm);
    padding: .2rem;
}

.site-footer__bottom {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: .5rem 1rem;
    margin-top: 2.5rem;
    padding-block: 1.25rem;
    border-top: 1px solid rgba(255, 255, 255, .12);
    font-size: .875rem;
}

.footer-links a {
    display: inline-block;
    padding-block: .15rem;
}

.social-links {
    display: flex;
    gap: .5rem;
    list-style: none;
    padding: 0;
    margin: 0;
}

.social-links a {
    display: grid;
    place-items: center;
    width: 2.25rem;
    height: 2.25rem;
    border-radius: 50%;
    background: rgba(255, 255, 255, .1);
    text-decoration: none;
}

.social-links a:hover {
    background: var(--brand);
    color: var(--brand-ink);
}

.contact-fab {
    position: fixed;
    right: 1.25rem;
    bottom: 1.25rem;
    z-index: 1030;
}

.contact-fab > .btn {
    width: 3.25rem;
    height: 3.25rem;
    border-radius: 50%;
    background: var(--brand);
    color: var(--brand-ink);
    border: 0;
    box-shadow: 0 6px 18px rgba(29, 42, 51, .25);
    font-size: 1.2rem;
}

.contact-fab .dropdown-item i {
    width: 1.25rem;
    text-align: center;
    margin-right: .5rem;
}

.pagination {
    flex-wrap: wrap;
    justify-content: center;
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        transition-duration: .01ms !important;
        scroll-behavior: auto !important;
    }
}

@media print {
    .site-nav,
    .site-search,
    .contact-fab,
    .site-footer,
    .share {
        display: none !important;
    }
}

/* หน้าแรกบนมือถือ: แสดงข่าว 4 รายการ (ที่เหลือดูได้จากลิงก์ "ทั้งหมด") */
@media (max-width: 575.98px) {
    .news-grid--home > .col:nth-child(n+5) {
        display: none;
    }
}