/* File: assets/css/frontend_style.css (Master Fix - Ultimate Z-Index) */

/* --- 1. Global Styles & Variables --- */
@import url('https://fonts.googleapis.com/css2?family=Kanit:wght@300;400;500;600;700&display=swap');

/* --- START: Mourning Mode --- */
body.mourning-mode .site-header,
body.mourning-mode .main-footer {
    filter: grayscale(100%);
    -webkit-filter: grayscale(100%);
}
body.mourning-mode main section {
    filter: grayscale(100%);
    -webkit-filter: grayscale(100%);
}
body.mourning-mode main section.content-exempt-mourning {
    filter: none;
    -webkit-filter: none;
}
/* --- END: Mourning Mode --- */

:root {
    --primary-color: #C00000;
    --primary-dark: #7f0000;
    --secondary-color: #D4AF37; 
    --white-color: #FFFFFF;
    --text-color: #333333;
    --text-light: #6b7280;
    --bg-light: #f9fafb;
    --font-family: 'Kanit', sans-serif;
}

body {
    font-family: var(--font-family);
    margin: 0;
    color: var(--text-color);
    background-color: var(--bg-light);
    line-height: 1.7;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

main {
    padding-top: 93px; 
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s;
}
a:hover {
    color: var(--secondary-color);
}

/* --- 2. Header --- */
.site-header { 
    background-color: var(--white-color);
    padding: 1rem 0;
    border-bottom: 3px solid var(--primary-color);
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    position: fixed; 
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000; /* Header ปกติอยู่ชั้น 1000 */
}
.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo a {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--primary-color);
}
.logo img {
    height: 60px;
    margin-right: 15px;
}
.logo-text h1 {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 600;
}
.logo-text p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--text-color);
}
.main-nav ul {
    margin: 0;
    padding: 0;
    list-style: none;
    display: flex;
    gap: 2rem;
    align-items: center;
}
.main-nav a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    padding: 0.5rem 0;
    position: relative;
    transition: color 0.3s;
}
.main-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 3px;
    background-color: var(--secondary-color);
    transition: width 0.3s ease-in-out;
}
.main-nav a:hover, .main-nav a.active {
    color: var(--primary-color);
}
.main-nav a:hover::after, .main-nav a.active::after {
    width: 100%;
}

/* --- 3. Hero & Slideshow --- */
.hero-slideshow {
    position: relative; width: 100%; height: 500px; overflow: hidden; background-color: #333;
}
.slides-container { position: relative; width: 100%; height: 100%; }
.slide { position: absolute; top: 0; left: 0; width: 100%; height: 100%; background-size: cover; background-position: center; opacity: 0; transition: opacity 1.5s ease-in-out; display: flex; align-items: center; justify-content: center; text-align: center; }
.slide:first-child { opacity: 1; }
.slide::before { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 100%; background-color: rgba(0, 0, 0, 0.5); }
.slide-content { position: relative; z-index: 2; color: #fff; padding: 20px; max-width: 800px; }
.slide-content h1 { font-size: 3.5rem; margin-bottom: 15px; text-shadow: 2px 2px 4px rgba(0,0,0,0.7); }
.slide-content p { font-size: 1.3rem; margin-bottom: 30px; }
.slide-button { background-color: #c00000; color: #fff; padding: 12px 30px; border-radius: 8px; font-weight: 600; text-transform: uppercase; letter-spacing: 1px; transition: background-color 0.3s, transform 0.3s; border: 2px solid #fff; }
.slide-button:hover { background-color: #a00000; transform: translateY(-2px); color: #fff; }
.prev-slide, .next-slide { position: absolute; top: 50%; transform: translateY(-50%); z-index: 3; background-color: rgba(0,0,0,0.3); color: #fff; border: none; padding: 15px; cursor: pointer; font-size: 20px; transition: background-color 0.3s; }
.prev-slide:hover, .next-slide:hover { background-color: rgba(0,0,0,0.6); }
.prev-slide { left: 15px; }
.next-slide { right: 15px; }

/* --- 4. Main Content Sections & Cards --- */
.section { padding: 4rem 0; }
.section-light { background-color: var(--bg-light); }
.section-title { text-align: center; font-size: 2.5rem; margin-bottom: 3rem; font-weight: 600; color: var(--primary-color); position: relative; padding-bottom: 1rem; }
.section-title::after { content: ''; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%); width: 80px; height: 4px; background-color: var(--secondary-color); }
.page-title-section { background-color: var(--primary-dark); color: white; padding: 2.5rem 0; text-align: center; }
.page-title-section h1 { margin: 0; font-size: 2.8rem; }

.news-section { padding: 4rem 0; }
.activity-section-bg { background-color: var(--white-color); }
.news-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 2rem; }
.news-grid.three-columns { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.news-card { background-color: var(--white-color); border-radius: 8px; box-shadow: 0 4px 15px rgba(0,0,0,0.05); overflow: hidden; display: flex; flex-direction: column; transition: transform 0.3s ease, box-shadow 0.3s ease; }
.news-card:hover { transform: translateY(-8px); box-shadow: 0 8px 25px rgba(0,0,0,0.1); }
.news-card-image img { width: 100%; height: 220px; object-fit: cover; display: block; }
.news-card-content { padding: 1.5rem; flex-grow: 1; display: flex; flex-direction: column; }
.news-card-content h3 { margin: 0 0 0.5rem 0; font-size: 1.3rem; color: #1a253c; }
.news-card-content .news-date { font-size: 0.9rem; color: #777; margin-bottom: 1rem; }
.news-card-content p { flex-grow: 1; line-height: 1.7; margin-bottom: 1.5rem; }
.read-more { font-weight: 600; align-self: flex-start; }

.btn-gallery { display: inline-block; background-color: #c00000; color: #fff; padding: 12px 30px; border-radius: 8px; font-weight: 600; text-transform: uppercase; letter-spacing: 1px; transition: background-color 0.3s, transform 0.3s; }
.btn-gallery:hover { background-color: #a00000; transform: translateY(-2px); color: #fff; }

/* --- 5. Page Specific Styles --- */
.about-content-section { padding: 80px 0; }
.about-content-section.bg-light { background-color: #f9fafb; }
.section-subtitle { text-align: center; font-size: 2.2rem; color: var(--primary-dark); margin-top: 0; margin-bottom: 40px; font-weight: 600; }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center; }
.about-image img { width: 100%; border-radius: 12px; }
.about-text h2 { font-size: 2rem; color: var(--primary-dark); }
.identity-grid-redefined { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.identity-card { background-color: #ffffff; border-bottom: 4px solid #c00000; padding: 30px; border-radius: 12px; text-align: center; transition: transform 0.3s, box-shadow 0.3s; box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05); }
.identity-card:hover { transform: translateY(-10px); box-shadow: 0 10px 20px -5px rgba(0, 0, 0, 0.1); }
.identity-card h4 { margin: 0 0 1px 0; font-size: 1.2rem; color: #111827; }
.identity-card p { margin: 0; font-size: 1.1rem; color: #374151; font-weight: 500; }
.about-card-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; }
.about-card { background-color: #ffffff; border-radius: 12px; padding: 30px; box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.07); transition: transform 0.3s; }
.about-card:hover { transform: translateY(-5px); }
.about-card h3 { margin-top: 0; font-size: 1.8rem; color: var(--primary-dark); display: flex; align-items: center; gap: 10px; border-bottom: 1px solid #eee; padding-bottom: 15px; margin-bottom: 20px; }
.about-card.full-width { grid-column: 1 / -1; }
.symbol-colors-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: start; }
.symbol-container, .colors-container { padding: 30px; }
.symbol-container h3, .colors-container h3 { text-align: left; margin-top: 0; color: var(--primary-dark); font-size: 1.8rem; border-bottom: 2px solid var(--secondary-color); padding-bottom: 10px; margin-bottom: 20px; display: inline-block; }
.symbol-container { text-align: center; }
.symbol-container img { max-width: 180px; margin-bottom: 20px; }
.colors-container ul { margin-top: 20px; }
.symbol-description-table { width: 100%; border-collapse: collapse; margin-top: 20px; text-align: left; }
.symbol-description-table td { padding: 8px 0; vertical-align: top; }
.symbol-description-table td:first-child { font-weight: 600; color: #111827; width: 35%; padding-right: 15px; }
.symbol-description-table td:last-child { color: #4b5563; }
.color-swatch-container { margin-bottom: 15px; }
.color-swatch { display: inline-block; width: 75px; height: 75px; border-radius: 50%; border: 2px solid #ddd; margin-right: 10px; }
.color-swatch.color-red { background-color: var(--primary-color); }
.color-swatch.color-white { background-color: var(--white-color); }
.about-content-section ul { list-style: none; padding-left: 0; }
.about-content-section li { padding-left: 25px; position: relative; margin-bottom: 12px; font-size: 1.05rem; }
.about-content-section li .list-icon { position: absolute; left: 0; top: 2px; color: var(--primary-color); font-weight: bold; }
.strategy-container { background-color: var(--white-color); border-radius: 12px; padding: 30px; box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.07); margin-top: 30px; }
.strategy-container h3 { margin-top: 0; font-size: 1.8rem; color: var(--primary-dark); display: flex; align-items: center; gap: 10px; border-bottom: 1px solid #eee; padding-bottom: 15px; margin-bottom: 20px; }
.aligned-list-table { width: 100%; border-collapse: collapse; margin-top: 15px; text-align: left; }
.aligned-list-table td { padding: 5px 0; vertical-align: top; border-bottom: 1px solid #f0f0f0; }
.aligned-list-table tr:last-child td { border-bottom: none; }
.aligned-key { font-weight: 600; color: var(--text-dark); width: 10%; padding-right: 5px; white-space: nowrap; }
.aligned-value { color: #4b5563; }
.aligned-full { text-align: center; }

/* Courses Page */
.courses-section { padding: 60px 0; }
.courses-intro { text-align: center; font-size: 1.1rem; max-width: 800px; margin: 0 auto 50px auto; color: #555; }
.courses-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; }
.course-card { background: #fff; border-radius: 8px; box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08); padding: 30px; border-top: 5px solid #c00000; }
.course-card-icon { font-size: 2.5rem; float: left; margin-right: 20px; line-height: 1; }
.course-card-content { line-height: 1.8; }

/* Contact Page */
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 50px; }
.contact-info .icon { display: inline-block; width: 20px; margin-right: 10px; color: var(--primary-color); }
.contact-map iframe { width: 100%; height: 100%; min-height: 450px; border: 0; border-radius: 12px; box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.07); }

/* Detail Pages */
.news-detail-section { padding: 60px 0; }
.news-detail-container { max-width: 900px; margin: 0 auto; background: #fff; padding: 40px; border-radius: 12px; box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.07); }
.news-detail-header h1 { font-size: 2.5rem; margin-top: 0; color: var(--primary-dark); }
.news-detail-meta { color: var(--text-light); margin-bottom: 25px; font-size: 0.9rem; }
.news-detail-image { width: 100%; height: auto; border-radius: 12px; margin-bottom: 30px; display: block; }
.news-detail-content { font-size: 1.1rem; line-height: 1.8; }
.back-link { display: inline-block; margin-top: 40px; font-weight: 600; }
.activity-meta { background-color: var(--bg-light); border-left: 4px solid var(--secondary-color); padding: 20px; margin-bottom: 30px; border-radius: 8px; }
.activity-meta p { margin: 0 0 10px 0; color: var(--text-normal); }
.gallery-link-container { text-align: center; margin: 40px 0; }
.gallery-title { margin-top: 50px; color: var(--primary-dark); border-bottom: 2px solid var(--secondary-color); padding-bottom: 10px; display: inline-block; }
.activity-gallery-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 15px; margin-top: 20px; }
.gallery-item img { width: 100%; height: 120px; object-fit: cover; border-radius: 8px; cursor: pointer; transition: transform 0.3s, box-shadow 0.3s; }
.gallery-item img:hover { transform: scale(1.05); box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1); }
.lightbox { display: none; position: fixed; z-index: 2000; padding-top: 50px; left: 0; top: 0; width: 100%; height: 100%; overflow: auto; background-color: rgba(0, 0, 0, 0.9); }
.lightbox-content { margin: auto; display: block; width: 80%; max-width: 900px; max-height: 80vh; }
.lightbox-close { position: absolute; top: 15px; right: 35px; color: #f1f1f1; font-size: 40px; font-weight: bold; transition: 0.3s; cursor: pointer; }

/* --- 6. Footer --- */
.main-footer {
    background-color: var(--primary-dark); color: #f0f0f0; padding: 40px 0 20px 0; margin-top: 50px; border-top: 5px solid var(--secondary-color);
}
.footer-content { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 30px; margin-bottom: 30px; }
.footer-section { flex: 1; min-width: 250px; }
.main-footer h3 { color: var(--white-color); border-bottom: 2px solid var(--secondary-color); padding-bottom: 10px; margin-bottom: 15px; display: inline-block; }
.main-footer a { color: #f0f0f0; }
.main-footer a:hover { color: var(--secondary-color); text-decoration: underline; }
.footer-bottom { border-top: 1px solid #992d2d; padding-top: 20px; display: flex; justify-content: space-between; align-items: center; font-size: 0.9rem; }

/* Admin Links & Dropdown (Desktop) */
li.admin-bar-dropdown { position: relative; list-style-type: none; }
.admin-bar-btn { background: none; border: none; color: #333; font-size: 1rem; font-family: 'Kanit', sans-serif; font-weight: 500; cursor: pointer; padding: 0.5rem 0; }
.admin-bar-btn strong { color: var(--primary-color); }
.admin-dropdown-content { display: none; position: absolute; background-color: #fff; min-width: 180px; box-shadow: 0 4px 12px rgba(0,0,0,0.1); border-radius: 5px; z-index: 1001; right: 0; border: 1px solid #eee; }
.admin-dropdown-content a { color: black; padding: 10px 15px; text-decoration: none; display: block; font-weight: 400; }
.admin-dropdown-content a:hover { background-color: #f1f1f1; color: var(--primary-color); }
li.admin-bar-dropdown:hover .admin-dropdown-content { display: block; }
.main-nav ul li.admin-login-link a { background-color: var(--secondary-color); color: var(--primary-dark); padding: 0.3rem 0.8rem; border-radius: 5px; font-weight: 500; transition: background-color 0.3s, color 0.3s; }
.main-nav ul li.admin-login-link a:hover { background-color: var(--primary-dark); color: white; }
.main-nav ul li.admin-login-link a::after { display: none; }

/* Dropdown (Desktop) */
.main-nav li.dropdown { position: relative; }
.main-nav .dropdown-menu { display: none; position: absolute; top: 100%; left: 0; background-color: var(--white-color); min-width: 220px; box-shadow: 0 8px 16px rgba(0,0,0,0.1); border-radius: 0 0 5px 5px; z-index: 1001; border-top: 3px solid var(--primary-color); }
.main-nav li.dropdown:hover .dropdown-menu { display: block; }
.main-nav .dropdown-menu li { display: block; width: 100%; }
.main-nav .dropdown-menu li a { color: var(--text-color); padding: 12px 18px; display: block; width: 100%; box-sizing: border-box; font-weight: 400; }
.main-nav .dropdown-menu li a:hover { background-color: #f1f1f1; color: var(--primary-color); }
.main-nav .dropdown-menu li a::after { display: none; }

/* --- 7. Responsive & Hamburger Menu (UPGRADED Z-INDEX) --- */

/* 💡 ปุ่ม ☰ ปรับให้ทะลุทุกอย่างบนจอ */
.hamburger-btn {
    display: none; 
    position: fixed;
    top: 25px;
    right: 25px;
    z-index: 9999 !important; /* ชั้นสูงสุด */
    background: var(--primary-color);
    border: none;
    padding: 10px;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s ease; 
}
.hamburger-btn .line {
    display: block;
    width: 25px;
    height: 3px;
    background-color: white;
    margin: 5px 0;
    transition: all 0.3s ease-in-out; 
}
.hamburger-btn.active {
    background-color: transparent; 
}
.hamburger-btn.active .line {
    background-color: #333; 
}
.hamburger-btn.active .line:nth-child(1) { transform: rotate(45deg) translate(5px, 6px); }
.hamburger-btn.active .line:nth-child(2) { opacity: 0; }
.hamburger-btn.active .line:nth-child(3) { transform: rotate(-45deg) translate(5px, -6px); }

/* 💡 พื้นหลังเมนู (Overlay) ปรับให้บังเนื้อหา แต่น้อยกว่าปุ่ม ☰ */
.mobile-nav-overlay {
    display: none; 
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.98); /* พื้นหลังขาวขุ่น */
    z-index: 9998 !important; /* ชั้นรองท็อป */
    padding: 100px 2rem 2rem 2rem; /* ดันเนื้อหาลงมา ไม่ให้บังปุ่ม X */
    box-sizing: border-box;
    overflow-y: auto;
}
.mobile-nav-overlay.active {
    display: block;
}
.mobile-nav-links ul { list-style: none; padding: 0; margin: 0; text-align: center; }
.mobile-nav-links li { margin-bottom: 1rem; }
.mobile-nav-links a { font-size: 1.5rem; font-weight: 500; color: var(--primary-dark); text-decoration: none; padding: 0.5rem; display: block; }
.mobile-nav-links a:hover { color: var(--primary-color); }
.mobile-dropdown .mobile-dropdown-menu { display: none; margin-top: 0.5rem; background-color: #f7f7f7; border-radius: 5px; padding-left: 0; }
.mobile-dropdown .mobile-dropdown-menu a { font-size: 1.2rem; color: #444; }
.mobile-admin-separator { border-top: 2px solid #eee; margin-top: 2rem; padding-top: 1rem; }
a.admin-login-link-mobile { background-color: var(--secondary-color); color: var(--primary-dark); border-radius: 5px; }

@media (max-width: 992px) {
    .site-header .main-nav { display: none; }
    .hamburger-btn { display: block; }
    .header-content { justify-content: space-between; }
    .staff-grid { grid-template-columns: repeat(3, 1fr); gap: 1rem; }
}

@media (max-width: 768px) {
    .page-title-section h1 { font-size: 2.2rem; }
    .news-grid { grid-template-columns: 1fr; }
    .staff-grid { grid-template-columns: repeat(2, 1fr); }
    .hierarchy-grid { grid-template-columns: 1fr; }
    .about-grid, .contact-grid { grid-template-columns: 1fr; }
    .identity-grid-redefined { grid-template-columns: 1fr; }
    .about-card-grid { grid-template-columns: 1fr; }
    .symbol-colors-grid { grid-template-columns: 1fr; }
    .footer-content, .footer-bottom { flex-direction: column; text-align: center; }
}