/* =========================================
   คณะวิทยาศาสตร์การกีฬา - Style CSS
   Mobile-First | สีหลัก: เหลืองทอง | สีรอง: เขียว
   ========================================= */

/* CSS Custom Properties */
:root {
    /* สีหลัก - เหลืองทอง */
    --color-primary: #D4AF37;
    --color-primary-dark: #B8860B;
    --color-primary-light: #F0E68C;

    /* สีรอง - เขียว */
    --color-secondary: #2E7D32;
    --color-secondary-dark: #1B5E20;
    --color-secondary-light: #C8E6C9;

    /* พื้นหลัง / ข้อความ - มินิมอล */
    --color-bg: #F5F7FA;
    --color-surface: #FFFFFF;
    --color-text-primary: #1F2937;
    --color-text-secondary: #6B7280;
    --color-text-muted: #9CA3AF;
    --color-border: #E5E7EB;

    /* สถานะ */
    --color-success: #10B981;
    --color-warning: #F59E0B;
    --color-danger: #EF4444;

    /* Typography */
    --font-family: 'Prompt', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif, 'Noto Sans Thai', 'Kanit';

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;

    /* Border radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
}

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 62.5%; /* 1rem = 10px */
}

body {
    font-family: var(--font-family);
    font-size: 1.6rem;
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
}

a {
    color: inherit;
    text-decoration: none;
}

ul, ol {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

button {
    font-family: inherit;
    font-size: inherit;
    background: none;
    border: none;
    cursor: pointer;
}

.skip-link {
    position: absolute;
    top: -100%;
    left: 0;
    background: var(--color-primary);
    color: #fff;
    padding: var(--space-sm);
    z-index: 10000;
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: 0;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-sm);
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 1.2rem 2rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    transition: all var(--transition-base);
    font-size: 1.6rem;
    text-align: center;
    min-height: 48px;
}

.btn-primary {
    background-color: var(--color-secondary);
    color: #fff;
}

.btn-primary:hover {
    background-color: var(--color-secondary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

.btn-outline:hover {
    background-color: var(--color-secondary-light);
    color: var(--color-secondary-dark);
}

.btn-lg {
    padding: 1.4rem 2.4rem;
    font-size: 1.8rem;
    min-height: 52px;
}

.btn-search {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    padding: 0;
    background: var(--color-bg);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    min-height: 44px;
    font-weight: 600;
    transition: all var(--transition-base);
    backdrop-filter: blur(4px);
}

.btn-search:hover {
    background: var(--color-primary-light);
    border-color: var(--color-primary);
    color: var(--color-text-primary);
}

/* ดันกลุ่มไอคอน (ค้นหา ภาษา เมนู) ไปชิดขวาและอยู่ติดกัน */
.header-container .btn-search {
    margin-left: auto;
}

/* ปุ่มสลับภาษา (minimal) */
#lang-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    padding: 0;
    background: var(--color-bg);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    min-height: 44px;
    font-weight: 700;
    font-size: 1.3rem;
    transition: all var(--transition-base);
    backdrop-filter: blur(4px);
    cursor: pointer;
    font-family: inherit;
}

#lang-toggle:hover {
    background: var(--color-primary-light);
    border-color: var(--color-primary);
}

/* กลุ่มไอコンบน header */
.header-actions {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

/* ไอคอนแอดมิน (เข้าสู่ระบบ) */
.admin-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    padding: 0;
    background: var(--color-bg);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    min-height: 44px;
    transition: all var(--transition-base);
    text-decoration: none;
}

.admin-icon:hover {
    background: var(--color-primary-light);
    border-color: var(--color-primary);
    color: var(--color-text-primary);
}

.btn-social {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    font-size: 1.4rem;
    font-weight: 600;
    transition: all var(--transition-base);
}

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

/* ===== Header ===== */
.header {
    position: sticky;
    top: 0;
    background: var(--color-surface);
    color: var(--color-text-primary);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0.8rem var(--space-sm);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.4rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-text-primary);
    text-decoration: none;
}

.logo-icon {
    font-size: 2rem;
}

/* โลโก้ BUU | FSS บนแถบหัวเว็บ */
.logo-img {
    height: 40px;
    width: auto;
    display: block;
}

.logo-text {
    display: none; /* ซ่อนชื่อบนมือถือเพื่อความกะทัดรัด แสดงบน desktop */
}

/* Hamburger */
.hamburger {
    position: relative;
    width: 44px;
    height: 44px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.hamburger:hover {
    background: var(--color-primary-light);
    border-color: var(--color-primary);
}

.hamburger-line {
    width: 24px;
    height: 2px;
    background: var(--color-text-primary);
    border-radius: 2px;
    transition: all var(--transition-base);
}

.hamburger[aria-expanded="true"] .hamburger-line:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.hamburger[aria-expanded="true"] .hamburger-line:nth-child(2) {
    opacity: 0;
}
.hamburger[aria-expanded="true"] .hamburger-line:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ===== Mobile Nav ===== */
.mobile-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    max-width: 320px;
    height: 100vh;
    background: var(--color-surface);
    box-shadow: -4px 0 12px rgba(0,0,0,0.1);
    z-index: 999;
    transition: right var(--transition-base);
    padding-top: 80px;
    display: flex;
    flex-direction: column;
}

.mobile-nav.open {
    right: 0;
}

.mobile-nav-list {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-md);
}

.mobile-nav-list li {
    border-bottom: 1px solid var(--color-border);
}

.mobile-nav-list a {
    display: block;
    padding: 1.4rem var(--space-sm);
    color: var(--color-text-primary);
    font-weight: 600;
    font-size: 1.8rem;
    transition: color var(--transition-fast);
}

.mobile-nav-list a:hover,
.mobile-nav-list a.active {
    color: var(--color-primary);
    background: var(--color-bg);
}

.mobile-nav-footer {
    padding: var(--space-md);
    border-top: 1px solid var(--color-border);
    background: var(--color-bg);
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.4);
    z-index: 998;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.overlay.open {
    opacity: 1;
    visibility: visible;
}

/* ===== Hero ===== */
.hero {
    padding: var(--space-lg) 0;
    background: var(--color-secondary);
}

.hero .hero-kicker,
.hero .hero-title,
.hero .hero-desc {
    color: #fff;
}

/* ปุ่มบนแบนเนอร์เขียว: หลักเป็นสีเหลือง รองเป็นกรอบขาว */
.hero .btn-primary {
    background-color: var(--color-primary);
    color: #000;
}

.hero .btn-outline {
    color: #fff;
    border-color: #fff;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-lg);
    align-items: center;
}

.hero-content {
    text-align: center;
}

.hero-kicker {
    display: inline-block;
    background: var(--color-primary-light);
    color: var(--color-primary-dark);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-full);
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.hero-title {
    font-size: clamp(2.4rem, 6vw, 4rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--space-sm);
    color: var(--color-text-primary);
}

.hero-desc {
    font-size: 1.8rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-lg);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-visual {
    order: -1;
    display: flex;
    justify-content: center;
}

.hero-badge {
    position: absolute;
    top: var(--space-md);
    left: var(--space-md);
    background: var(--color-primary);
    color: #000;
    padding: 0.6rem 1.2rem;
    border-radius: var(--radius-md);
    font-weight: 700;
    font-size: 1.4rem;
    box-shadow: var(--shadow-md);
}

.hero-image-placeholder {
    width: clamp(200px, 60vw, 350px);
    height: clamp(200px, 60vw, 350px);
    border-radius: var(--radius-lg);
    background: var(--color-bg);
    border: 2px dashed var(--color-border);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    color: var(--color-text-muted);
    font-size: 1.4rem;
    position: relative;
}

.hero-image-placeholder svg {
    color: var(--color-text-muted);
}

/* ===== Section Title ===== */
.section-title {
    font-size: clamp(2rem, 5vw, 2.8rem);
    font-weight: 700;
    color: var(--color-secondary);
    margin-bottom: 0.5rem;
}

.section-desc {
    color: var(--color-text-secondary);
    font-size: 1.6rem;
    margin-bottom: var(--space-lg);
}

.section-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    margin-bottom: var(--space-lg);
}

.view-all {
    margin-top: var(--space-sm);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-primary);
}

.view-all:hover {
    text-decoration: underline;
}

/* ===== Quick Links ===== */
.quick-links {
    padding: var(--space-xl) 0;
    background: var(--color-bg);
}

.quick-links-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.quick-link-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: var(--color-surface);
    padding: 1.2rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
}

.quick-link-card:hover {
    transform: translateY(-2px);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.ql-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: var(--color-primary-light);
    color: var(--color-primary-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.ql-title {
    flex: 1;
    font-weight: 600;
    font-size: 1.5rem;
    color: var(--color-text-primary);
}

.ql-arrow {
    color: var(--color-text-muted);
    font-size: 1.8rem;
}

/* ===== Latest News ===== */
.latest-news {
    padding: var(--space-xl) 0;
    background: var(--color-surface);
}

.news-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: var(--space-lg);
    overflow-x: auto;
    padding-bottom: 1rem;
    scrollbar-width: none;
}

.news-tabs::-webkit-scrollbar {
    display: none;
}

.tab-btn {
    flex-shrink: 0;
    padding: 0.8rem 1.6rem;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    color: var(--color-text-secondary);
    font-weight: 600;
    font-size: 1.5rem;
    transition: all var(--transition-base);
    white-space: nowrap;
}

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

.tab-btn.active {
    background: var(--color-secondary);
    color: #fff;
    border-color: var(--color-secondary);
}

.tab-panel {
    display: none;
    animation: fadeIn var(--transition-base);
}

.tab-panel.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.news-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

.news-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
}

.news-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}

.news-image {
    width: 100%;
    height: 180px;
    background: var(--color-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.news-image-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
    font-size: 1.3rem;
}

.news-image-placeholder svg {
    color: var(--color-text-muted);
}

.news-content {
    padding: 1rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.news-tag {
    display: inline-block;
    font-size: 1.2rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0.3rem 0.8rem;
    border-radius: var(--radius-full);
    margin-bottom: 0.5rem;
}

.news-tag.certain { background: var(--color-primary-light); color: var(--color-primary-dark); }
.news-tag { background: var(--color-primary); color: var(--color-text-primary); font-weight: 600; }

.news-title {
    font-size: 1.6rem;
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: 0.5rem;
    color: var(--color-text-primary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-excerpt {
    font-size: 1.4rem;
    color: var(--color-text-secondary);
    line-height: 1.5;
    margin-bottom: 0.8rem;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-date {
    font-size: 1.3rem;
    color: var(--color-text-muted);
    font-weight: 500;
    margin-top: auto;
}

/* ===== Upcoming Events ===== */
.upcoming-events {
    padding: var(--space-xl) 0;
    background: var(--color-bg);
}

.events-list {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

.event-card {
    display: flex;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: all var(--transition-base);
}

.event-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary);
}

.event-date {
    width: 70px;
    background: var(--color-secondary);
    color: #fff;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 1rem 0.5rem;
}

.event-day {
    font-size: 2rem;
    font-weight: 700;
}

.event-month {
    font-size: 1.3rem;
    font-weight: 600;
    opacity: 0.9;
}

.event-content {
    padding: 1rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.event-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 0.4rem;
    line-height: 1.4;
}

.event-time,
.event-location {
    font-size: 1.4rem;
    color: var(--color-text-secondary);
    margin-bottom: 0.3rem;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

/* ===== Social Section ===== */
.social-section {
    padding: var(--space-xl) 0;
    background: var(--color-surface);
}

.social-content {
    text-align: center;
}

.social-links {
    display: flex;
    gap: 1.6rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: var(--space-md);
}

.social-link {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

.social-link:hover {
    border-color: var(--color-primary);
    background: var(--color-primary-light);
    transform: translateY(-2px);
}

.social-link svg {
    width: 22px;
    height: 22px;
}

.social-logo {
    width: 28px;
    height: 28px;
    object-fit: contain;
    display: block;
}

/* ===== Footer ===== */
.footer {
    background: var(--color-text-primary);
    color: #fff;
    padding: var(--space-xl) 0 var(--space-lg);
}

.footer .footer-title,
.footer .footer-contact h3 {
    color: var(--color-primary);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-lg);
}

.footer-brand .logo-icon {
    font-size: 2.2rem;
    margin-right: 0.6rem;
}

.footer-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-primary);
}

.footer-desc {
    font-size: 1.4rem;
    color: var(--color-text-muted);
    margin-top: 0.5rem;
    line-height: 1.6;
}

.footer-contact h3,
.footer-map h3,
.footer-policies h3 {
    font-size: 1.6rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #fff;
}

.footer-contact p {
    font-size: 1.4rem;
    color: var(--color-text-muted);
    margin-bottom: 0.5rem;
    line-height: 1.6;
}

.footer-policies ul {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.footer-policies a {
    font-size: 1.4rem;
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

.footer-policies a:hover {
    color: var(--color-primary-light);
}

.map-placeholder {
    height: 160px;
    background: var(--color-bg);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
    border: 1px solid var(--color-border);
}

.map-placeholder svg {
    opacity: 0.5;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    margin-top: var(--space-lg);
    padding-top: var(--space-md);
    text-align: center;
    font-size: 1.3rem;
    color: var(--color-text-muted);
}

/* ===== Search Modal ===== */
.modal {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    padding: var(--space-sm);
}

.modal.open {
    opacity: 1;
    visibility: visible;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(4px);
    transition: opacity var(--transition-base);
}

.modal-content {
    position: relative;
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transform: translateY(20px);
    transition: transform var(--transition-base);
}

.modal.open .modal-content {
    transform: translateY(0);
}

.modal-header {
    padding: var(--space-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--color-border);
    background: var(--color-bg);
}

.modal-header h2 {
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--color-text-primary);
}

.modal-close {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    background: var(--color-border);
    color: var(--color-text-primary);
    font-size: 2rem;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--color-danger);
    color: #fff;
}

.modal-body {
    padding: var(--space-md);
    overflow-y: auto;
    flex: 1;
}

.search-form {
    display: flex;
    gap: 0.5rem;
    margin-bottom: var(--space-lg);
}

.search-form input {
    flex: 1;
    padding: 1rem 1.2rem;
    font-size: 1.6rem;
    font-family: inherit;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-bg);
}

.search-form input:focus {
    outline: none;
    border-color: var(--color-primary);
}

.search-form button {
    min-height: unset;
    padding: 1rem 1.5rem;
}

.search-results {
    margin-bottom: var(--space-md);
    min-height: 40px;
}

.search-hint {
    font-size: 1.3rem;
    color: var(--color-text-muted);
    text-align: center;
}

/* ===== Desktop (min-width 768px) ===== */
@media (min-width: 768px) {
    :root {
        font-size: 62.5%;
    }

    .logo-text {
        display: inline;
    }

    .hamburger {
        display: flex;
    }

    .header-container {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        padding: 1rem var(--space-md);
    }

    .hero-container {
        grid-template-columns: 1fr 1fr;
        text-align: left;
    }

    .hero-content {
        text-align: left;
    }

    .hero-actions {
        justify-content: flex-start;
    }

    .hero-visual {
        order: 2;
        position: relative;
    }

    .quick-links-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .news-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .events-list {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .social-links {
        justify-content: center;
    }
}

/* ===== Page Header (หน้าย่อย) ===== */
.page-header {
    background: var(--color-secondary);
    color: #fff;
    padding: var(--space-lg) 0;
}

.page-header .breadcrumb {
    margin-bottom: 0.5rem;
    font-size: 1.4rem;
    color: var(--color-secondary-light);
}

.page-header .breadcrumb a {
    color: #fff;
    text-decoration: underline;
}

.page-header h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.page-header p {
    font-size: 1.6rem;
    opacity: 0.9;
}

/* ===== Search & Filter (หน้าข่าว) ===== */
.news-search-filter {
    padding: var(--space-lg) 0;
    background: var(--color-bg);
}

.search-box {
    display: flex;
    gap: 0.5rem;
    margin-bottom: var(--space-md);
}

.search-box input {
    flex: 1;
    padding: 1rem 1.2rem;
    font-size: 1.6rem;
    font-family: inherit;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-surface);
}

.search-box input:focus {
    outline: none;
    border-color: var(--color-primary);
}

.filter-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.6rem 1.2rem;
    font-size: 1.4rem;
    font-weight: 600;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    background: var(--color-surface);
    color: var(--color-text-secondary);
    transition: all var(--transition-base);
    cursor: pointer;
    font-family: inherit;
}

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

.filter-btn.active {
    background: var(--color-secondary);
    color: #fff;
    border-color: var(--color-secondary);
}

/* ===== News Listing ===== */
.news-listing {
    padding: var(--space-xl) 0;
    background: var(--color-surface);
}

.news-count {
    margin-bottom: var(--space-md);
    font-size: 1.4rem;
    color: var(--color-text-secondary);
}

.pagination {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-top: var(--space-lg);
}

/* ===== Social Share Section ===== */
.social-share {
    padding: var(--space-lg) 0;
    background: var(--color-bg);
    border-top: 1px solid var(--color-border);
}

.share-box {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

/* ===== Calendar (หน้าปฏิทิน) ===== */
.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 0.5rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    margin-bottom: var(--space-lg);
}

.cal-weekday {
    padding: 0.8rem;
    text-align: center;
    font-weight: 700;
    font-size: 1.4rem;
    color: var(--color-text-secondary);
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
}

.cal-day {
    aspect-ratio: 1;
    display: flex;
    flex-direction: column;
    padding: 0.5rem;
    font-size: 1.4rem;
    color: var(--color-text-primary);
    cursor: default;
}

.cal-day.empty {
    background: transparent;
    cursor: default;
}

.cal-day-num {
    font-weight: 600;
    margin-bottom: 0.4rem;
    line-height: 1;
}

.cal-day.has-event {
    background: var(--color-primary-light);
    position: relative;
}

.cal-event {
    font-size: 1.1rem;
    color: var(--color-primary-dark);
    font-weight: 600;
    text-align: center;
    padding-top: 0.2rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.cal-day:hover:not(.empty) {
    background: var(--color-secondary-light);
    color: var(--color-secondary-dark);
}

.cal-day:hover .cal-event {
    color: var(--color-secondary-dark);
}

/* ===== Contact Page (หน้าติดต่อ / สมัครเรียน) ===== */
.contact-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-lg);
}

.contact-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-md);
}

.contact-info-item {
    margin-bottom: 1.5rem;
}

.form-group {
    margin-bottom: 1.2rem;
}

.form-label {
    display: block;
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 0.4rem;
}

.required {
    color: var(--color-danger);
}

.form-input {
    width: 100%;
    padding: 0.9rem 1rem;
    font-size: 1.5rem;
    font-family: inherit;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-bg);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
}

.form-input.error {
    border-color: var(--color-danger);
}

.cf-message {
    padding: 1rem;
    border-radius: var(--radius-md);
    font-size: 1.4rem;
    font-weight: 600;
    text-align: center;
}

.cf-message.success {
    background: var(--color-success);
    color: #fff;
}

.cf-message.error {
    background: var(--color-danger);
    color: #fff;
}

/* ===== Large Desktop (min-width 1024px) ===== */
@media (min-width 1024px) {
    .contact-layout {
        grid-template-columns: 1fr 1fr;
    }
}

/* ===== Large Desktop (min-width 1024px) ===== */
@media (min-width 1024px) {
    .news-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .events-list {
        grid-template-columns: repeat(4, 1fr);
    }

    .quick-links-grid {
        grid-template-columns: repeat(6, 1fr);
    }
}