:root {
    --primary: #9b4dca;
    --secondary: #1a0a2e;
    --accent: #e040fb;
    --dark: #0d0614;
    --darker: #080410;
    --text: #e0e0e0;
    --text-muted: #a0a0b8;
    --gold: #bb86fc;
    --gold-light: #d4aaff;
    --border: rgba(155, 77, 202, 0.2);
    --card-bg: rgba(26, 10, 46, 0.8);
    --card-hover: rgba(26, 10, 46, 1);
    --radius: 12px;
    --radius-sm: 8px;
    --shadow: 0 4px 24px rgba(0,0,0,0.4);
    --transition: 0.3s ease;
    --max-width: 1200px;
}

*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: 'Noto Sans Thai', 'Bai Jamjuree', sans-serif;
    background: var(--dark);
    color: var(--text);
    line-height: 1.8;
    font-size: 16px;
    min-height: 100vh;
    padding-bottom: 70px;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color var(--transition);
}

a:hover {
    color: var(--gold-light);
}

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

h1, h2, h3, h4, h5, h6 {
    color: var(--gold);
    line-height: 1.4;
    margin-bottom: 0.5em;
}

h1 { font-size: 2rem; }
h2 { font-size: 1.6rem; }
h3 { font-size: 1.3rem; }

p { margin-bottom: 1em; }

ul, ol {
    margin-bottom: 1em;
    padding-left: 1.5em;
}

li { margin-bottom: 0.4em; }

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* ── Header ── */

.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: linear-gradient(135deg, var(--darker), var(--secondary));
    border-bottom: 1px solid var(--border);
    transition: box-shadow var(--transition);
}

.site-header.scrolled {
    box-shadow: 0 2px 20px rgba(0,0,0,0.5);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px;
    max-width: var(--max-width);
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
}

.logo img {
    height: 40px;
    width: auto;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 8px;
    align-items: center;
    margin: 0;
    padding: 0;
}

.nav-menu li a {
    display: block;
    padding: 8px 16px;
    color: var(--text);
    font-size: 0.9rem;
    border-radius: var(--radius-sm);
    transition: all var(--transition);
    white-space: nowrap;
}

.nav-menu li a:hover,
.nav-menu li a.active {
    color: var(--gold);
    background: rgba(155, 77, 202, 0.1);
}

.nav-cta {
    display: inline-block;
    padding: 10px 24px;
    background: linear-gradient(135deg, var(--primary), var(--gold));
    color: var(--dark) !important;
    font-weight: 700;
    border-radius: 50px;
    font-size: 0.9rem;
    transition: all var(--transition);
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(155, 77, 202, 0.4);
    color: var(--dark) !important;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 5px;
    background: none;
    border: none;
}

.hamburger span {
    display: block;
    width: 28px;
    height: 3px;
    background: var(--gold);
    border-radius: 3px;
    transition: all var(--transition);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}
.hamburger.active span:nth-child(2) {
    opacity: 0;
}
.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* ── Hero ── */

.hero {
    padding: 60px 0 40px;
    background: linear-gradient(135deg, var(--darker) 0%, var(--secondary) 50%, rgba(155,77,202,0.1) 100%);
    border-bottom: 1px solid var(--border);
}

.hero h1 {
    font-size: 2.2rem;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--gold), var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.05rem;
    color: var(--text-muted);
    max-width: 800px;
}

.hero-banner {
    margin-top: 30px;
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border);
}

/* ── Section ── */

.section {
    padding: 50px 0;
    border-bottom: 1px solid rgba(155, 77, 202, 0.08);
}

.section:last-child {
    border-bottom: none;
}

.section h2 {
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--border);
    display: inline-block;
}

.section h3 {
    color: var(--primary);
    margin-top: 1.5em;
}

/* ── Banner placeholder ── */

.banner-placeholder {
    margin: 30px 0;
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border);
}

.banner-placeholder img {
    width: 100%;
}

/* ── Article figure ── */

.article-figure {
    margin: 25px 0;
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border);
    background: var(--card-bg);
}

.article-figure img {
    width: 100%;
}

.article-figure figcaption {
    padding: 10px 15px;
    font-size: 0.85rem;
    color: var(--text-muted);
    text-align: center;
    border-top: 1px solid var(--border);
}

/* ── Cards ── */

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
    margin-top: 24px;
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: all var(--transition);
}

.card:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow);
    background: var(--card-hover);
}

.card-image {
    position: relative;
    overflow: hidden;
}

.card-image img {
    width: 100%;
    aspect-ratio: 16/10;
    object-fit: cover;
    transition: transform var(--transition);
}

.card:hover .card-image img {
    transform: scale(1.05);
}

.card-body {
    padding: 20px;
}

.card-body h3 {
    margin-top: 0;
    font-size: 1.15rem;
    color: var(--gold);
}

.card-body p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.card-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 20px;
    background: linear-gradient(135deg, var(--primary), var(--gold));
    color: var(--dark);
    font-weight: 600;
    border-radius: 50px;
    font-size: 0.85rem;
    margin-top: 10px;
    transition: all var(--transition);
}

.card-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(155, 77, 202, 0.3);
    color: var(--dark);
}

/* ── Promo cards ── */

.promo-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    transition: all var(--transition);
}

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

.promo-icon {
    font-size: 2rem;
    color: var(--gold);
    margin-bottom: 12px;
}

.promo-card h3 {
    margin-top: 0;
    font-size: 1.1rem;
}

.promo-card p {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.promo-condition {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(155, 77, 202, 0.1);
    border: 1px solid var(--border);
    border-radius: 50px;
    font-size: 0.8rem;
    color: var(--primary);
    margin-top: 8px;
}

.promo-badge {
    display: inline-block;
    padding: 3px 10px;
    background: var(--accent);
    color: #fff;
    font-size: 0.75rem;
    font-weight: 700;
    border-radius: 50px;
    margin-bottom: 10px;
}

.promo-date {
    text-align: center;
    font-size: 1.1rem;
    color: var(--gold);
    margin-bottom: 30px;
    padding: 12px;
    background: rgba(155, 77, 202, 0.05);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
}

.promo-date i {
    margin-right: 8px;
}

/* ── FAQ ── */

.faq-item {
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    margin-bottom: 10px;
    overflow: hidden;
    background: var(--card-bg);
}

.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    cursor: pointer;
    font-weight: 600;
    color: var(--text);
    transition: all var(--transition);
    border: none;
    background: none;
    width: 100%;
    text-align: left;
    font-size: 0.95rem;
    font-family: inherit;
    gap: 12px;
}

.faq-question:hover {
    color: var(--gold);
    background: rgba(155, 77, 202, 0.05);
}

.faq-question i {
    transition: transform var(--transition);
    color: var(--primary);
    flex-shrink: 0;
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
}

.faq-answer-inner {
    padding: 0 20px 16px;
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.7;
}

/* ── CTA ── */

.cta-section {
    text-align: center;
    padding: 50px 0;
    background: linear-gradient(135deg, rgba(155,77,202,0.08), rgba(224,64,251,0.05));
    border-radius: var(--radius);
    margin: 30px 0;
}

.cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 40px;
    background: linear-gradient(135deg, var(--primary), var(--gold));
    color: var(--dark);
    font-weight: 700;
    font-size: 1.1rem;
    border-radius: 50px;
    border: none;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
}

.cta-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(155, 77, 202, 0.4);
    color: var(--dark);
}

/* ── Contact ── */

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-top: 24px;
}

.contact-info-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 16px;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    margin-bottom: 12px;
}

.contact-info-item i {
    font-size: 1.5rem;
    color: var(--gold);
    width: 40px;
    text-align: center;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 12px 16px;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
    font-family: inherit;
    font-size: 0.95rem;
    margin-bottom: 12px;
    transition: border-color var(--transition);
}

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

.contact-form textarea {
    min-height: 150px;
    resize: vertical;
}

.contact-form button {
    padding: 12px 30px;
    background: linear-gradient(135deg, var(--primary), var(--gold));
    color: var(--dark);
    font-weight: 700;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    font-size: 1rem;
    font-family: inherit;
    transition: all var(--transition);
}

.contact-form button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(155, 77, 202, 0.4);
}

/* ── Login page ── */

.login-box {
    max-width: 480px;
    margin: 60px auto;
    padding: 40px;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    text-align: center;
}

.login-box h1 {
    font-size: 1.8rem;
    margin-bottom: 16px;
}

.login-box p {
    color: var(--text-muted);
    margin-bottom: 24px;
}

.login-buttons {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.login-buttons a {
    display: block;
    padding: 14px;
    border-radius: var(--radius-sm);
    font-weight: 700;
    font-size: 1rem;
    text-align: center;
    transition: all var(--transition);
}

.btn-login {
    background: rgba(155, 77, 202, 0.15);
    border: 1px solid var(--primary);
    color: var(--gold);
}

.btn-login:hover {
    background: rgba(155, 77, 202, 0.25);
    color: var(--gold);
}

.btn-register {
    background: linear-gradient(135deg, var(--primary), var(--gold));
    color: var(--dark);
}

.btn-register:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(155, 77, 202, 0.4);
    color: var(--dark);
}

/* ── Related articles ── */

.related-articles {
    margin-top: 40px;
    padding-top: 30px;
    border-top: 2px solid var(--border);
}

.related-articles h3 {
    color: var(--gold);
    margin-bottom: 20px;
}

/* ── Table ── */

.content-table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    font-size: 0.9rem;
}

.content-table th,
.content-table td {
    padding: 12px 16px;
    border: 1px solid var(--border);
    text-align: left;
}

.content-table th {
    background: rgba(155, 77, 202, 0.1);
    color: var(--gold);
    font-weight: 600;
}

.content-table tr:hover {
    background: rgba(155, 77, 202, 0.03);
}

/* ── Footer ── */

.site-footer {
    background: linear-gradient(135deg, var(--darker), var(--secondary));
    border-top: 1px solid var(--border);
    padding: 40px 0 20px;
    margin-top: 40px;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: center;
    margin-bottom: 20px;
    list-style: none;
    padding: 0;
}

.footer-links a {
    color: var(--text-muted);
    font-size: 0.9rem;
    padding: 4px 8px;
}

.footer-links a:hover {
    color: var(--gold);
}

.footer-copy {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
    padding-top: 16px;
    border-top: 1px solid var(--border);
}

/* ── Mobile Bottom Nav ── */

.mobile-bottom-nav {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(135deg, var(--darker), var(--secondary));
    border-top: 1px solid var(--border);
    z-index: 999;
    padding: 6px 0;
}

.mobile-bottom-nav ul {
    display: flex;
    justify-content: space-around;
    list-style: none;
    padding: 0;
    margin: 0;
}

.mobile-bottom-nav a {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3px;
    padding: 6px 10px;
    color: var(--text-muted);
    font-size: 0.65rem;
    transition: color var(--transition);
}

.mobile-bottom-nav a i {
    font-size: 1.1rem;
}

.mobile-bottom-nav a:hover,
.mobile-bottom-nav a.active {
    color: var(--gold);
}

/* ── Back to top ── */

.back-to-top {
    position: fixed;
    bottom: 80px;
    right: 20px;
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--primary), var(--gold));
    color: var(--dark);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transform: translateY(20px);
    transition: all var(--transition);
    z-index: 998;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

.back-to-top.visible {
    opacity: 1;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(155, 77, 202, 0.4);
}

/* ── Page header (for inner pages) ── */

.page-header {
    padding: 40px 0 30px;
    background: linear-gradient(135deg, var(--darker), var(--secondary));
    border-bottom: 1px solid var(--border);
}

.page-header h1 {
    font-size: 2rem;
    background: linear-gradient(135deg, var(--gold), var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ── Article page ── */

.article-content {
    max-width: 900px;
    margin: 0 auto;
    padding: 40px 20px;
}

.article-content h1 {
    font-size: 2rem;
    margin-bottom: 20px;
}

.article-content h2 {
    margin-top: 2em;
}

.article-content h3 {
    margin-top: 1.5em;
}

.article-featured-image {
    margin: 20px 0 30px;
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border);
}

.article-meta {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
}

/* ── Responsive ── */

@media (max-width: 1024px) {
    h1 { font-size: 1.8rem; }
    .hero h1 { font-size: 1.9rem; }
    .card-grid { grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
}

@media (max-width: 768px) {
    body { font-size: 15px; }
    h1 { font-size: 1.5rem; }
    h2 { font-size: 1.3rem; }
    .hero { padding: 40px 0 30px; }
    .hero h1 { font-size: 1.6rem; }

    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        background: var(--darker);
        border-top: 1px solid var(--border);
        padding: 10px 0;
        box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    }

    .nav-menu.open {
        display: flex;
    }

    .nav-menu li a {
        padding: 12px 20px;
    }

    .hamburger {
        display: flex;
    }

    .mobile-bottom-nav {
        display: block;
    }

    .contact-grid {
        grid-template-columns: 1fr;
    }

    .card-grid {
        grid-template-columns: 1fr;
    }

    .cta-section {
        padding: 30px 20px;
    }

    .login-box {
        margin: 30px 15px;
        padding: 30px 20px;
    }

    .section { padding: 35px 0; }

    .article-content {
        padding: 25px 15px;
    }

    .back-to-top {
        bottom: 75px;
        right: 15px;
        width: 40px;
        height: 40px;
    }
}

@media (max-width: 480px) {
    .hero h1 { font-size: 1.35rem; }
    .card-grid { gap: 16px; }
    .promo-card { padding: 18px; }
}