@import url('https://fonts.googleapis.com/css2?family=Be+Vietnam+Pro:wght@300;400;500;600;700&family=Playfair+Display:ital,wght@0,500;0,600;0,700;1,500;1,600&family=Inter:wght@400;500;600&display=swap');

:root {
    --primary: #C6922F; 
    --primary-hover: #e0aa45;
    --bg-dark: #0f172a; 
    --bg-card: rgba(30, 41, 59, 0.65);
    --border-dark: rgba(255, 255, 255, 0.08);
    --text-light: #f8fafc;
    --text-muted: #94a3b8;
    --wx-kim: #e2e8f0;
    --wx-moc: #10b981;
    --wx-thuy: #3b82f6;
    --wx-hoa: #ef4444;
    --wx-tho: #f59e0b;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
    font-family: 'Be Vietnam Pro', 'Inter', sans-serif;
    background: var(--bg-dark);
    color: var(--text-light);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background-image: radial-gradient(circle at 50% 0%, #1e293b 0%, #0f172a 60%);
    background-attachment: fixed;
}

/* Typography */
h1, h2, h3, h4 { font-family: 'Playfair Display', serif; }
.text-gold { color: var(--primary); }
.text-muted { color: var(--text-muted); }
.text-center { text-align: center; }
.text-primary { color: var(--primary); }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 1.5rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }
.mt-5 { margin-top: 3rem; }
.text-sm { font-size: 0.875rem; }
.text-xs { font-size: 0.75rem; }

/* ------------------- HEADER & NAVIGATION ------------------- */
.kth-header {
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-dark);
    position: sticky;
    top: 0;
    z-index: 1000;
}
.header-inner {
    max-width: 1200px; margin: 0 auto; padding: 0 20px;
    height: 70px; display: flex; align-items: center; justify-content: space-between;
}
.logo {
    font-size: 1.5rem; font-weight: 700; color: var(--text-light); text-decoration: none;
    font-family: 'Playfair Display', serif; display: flex; align-items: center; gap: 8px;
}
.logo span { color: var(--primary); }

.nav-menu {
    display: flex; gap: 24px; list-style: none; align-items: center;
}
.nav-menu > li { position: relative; }
.nav-menu a {
    color: var(--text-light); text-decoration: none; font-weight: 500;
    font-size: 0.95rem; transition: 0.3s; padding: 10px 0; display: block;
}
.nav-menu a:hover, .nav-menu a.active { color: var(--primary); }

/* Dropdown */
.dropdown-menu {
    position: absolute; top: 100%; left: 0; min-width: 200px;
    background: #1e293b; border: 1px solid var(--border-dark);
    border-radius: 8px; padding: 10px 0;
    opacity: 0; visibility: hidden; transform: translateY(10px);
    transition: all 0.3s ease; box-shadow: 0 10px 25px rgba(0,0,0,0.5);
    z-index: 100;
}
.nav-menu li:hover .dropdown-menu { opacity: 1; visibility: visible; transform: translateY(0); }
.dropdown-menu a { padding: 8px 20px; font-size: 0.9rem; color: var(--text-muted); display: block; }
.dropdown-menu a:hover { background: rgba(255,255,255,0.05); color: var(--primary); padding-left: 25px; }

/* Action Buttons */
.header-actions { display: flex; gap: 12px; align-items: center; }
.mobile-toggle { display: none; background: transparent; color: #fff; font-size: 1.5rem; }

/* Buttons */
button { font-family: 'Be Vietnam Pro', sans-serif; cursor: pointer; transition: 0.3s; border: none; }
.btn-outline {
    background: transparent; color: var(--primary);
    border: 1px solid var(--primary); border-radius: 20px;
    padding: 8px 18px; font-size: 0.85rem; font-weight: 600;
}
.btn-outline:hover { background: rgba(198, 146, 47, 0.1); }
.btn-primary {
    background: var(--primary); color: #fff;
    padding: 8px 18px; border-radius: 20px; font-size: 0.85rem; font-weight: 600;
}
.btn-primary:hover { background: var(--primary-hover); }

.btn-generate {
    background: linear-gradient(135deg, #C6922F, #e0aa45);
    color: #fff; padding: 14px 24px; border-radius: 12px;
    font-size: 1rem; font-weight: 700; width: 100%;
    box-shadow: 0 4px 15px rgba(198, 146, 47, 0.3);
}
.btn-generate:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(198, 146, 47, 0.4); }

.btn-back {
    background: transparent; color: var(--text-muted);
    padding: 8px 16px; border-radius: 8px; border: 1px solid var(--border-dark);
    margin-bottom: 20px; display: inline-flex; align-items: center; gap: 8px;
}
.btn-back:hover { background: rgba(255,255,255,0.05); color: #fff; }

.btn-unlock {
    background: var(--primary); color: #fff;
    padding: 12px 24px; border-radius: 8px; font-weight: 600; font-size: 1rem;
    display: inline-flex; align-items: center; gap: 8px; margin-top: 15px;
}
.btn-unlock:hover { background: var(--primary-hover); }

/* Layout & Containers */
.kth-container { max-width: 1000px; margin: 0 auto; padding: 40px 20px; flex: 1; width: 100%; }
.glass-card {
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    border: 1px solid var(--border-dark);
    border-radius: 16px;
    padding: 30px;
}

/* ------------------- HERO & FORM ------------------- */
.hero { text-align: center; margin-bottom: 40px; }
.hero h1 { font-size: 2.8rem; margin-bottom: 12px; line-height: 1.2; }
.hero h1 em { font-style: normal; color: var(--primary); font-weight: 700; }
.hero p { color: var(--text-muted); max-width: 600px; margin: 0 auto 24px; font-size: 1.05rem; line-height: 1.6; }
.stats { display: flex; justify-content: center; gap: 40px; margin-top: 20px; }
.stat-item span { display: block; font-size: 1.5rem; font-weight: 700; color: var(--primary); font-family: 'Playfair Display', serif;}
.stat-item small { color: var(--text-muted); font-size: 0.85rem; text-transform: uppercase; letter-spacing: 1px;}

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; max-width: 800px; margin: 0 auto; }
.form-grid h2 { grid-column: 1 / -1; margin-bottom: 10px; color: var(--primary); text-align: center; font-size: 1.8rem;}
.input-group { display: flex; flex-direction: column; gap: 8px; }
.full-width { grid-column: 1 / -1; }
.input-group label { font-size: 0.9rem; font-weight: 600; color: var(--text-light); }
.input-group input[type="text"], .input-group input[type="date"], .input-group select {
    background: rgba(15, 23, 42, 0.8);
    border: 1px solid var(--border-dark);
    color: var(--text-light);
    padding: 14px 16px;
    border-radius: 10px;
    font-family: inherit;
    font-size: 1rem;
    outline: none;
    transition: 0.3s;
}
.input-group input:focus, .input-group select:focus {
    border-color: var(--primary); box-shadow: 0 0 0 3px rgba(198, 146, 47, 0.15);
}

.radio-group { display: flex; gap: 15px; }
.radio-group label {
    flex: 1; background: rgba(15, 23, 42, 0.8);
    border: 1px solid var(--border-dark); border-radius: 10px;
    padding: 12px; display: flex; align-items: center; justify-content: center;
    cursor: pointer; transition: 0.3s; font-size: 0.95rem;
}
.radio-group input[type="radio"] { display: none; }
.radio-group input[type="radio"]:checked + span { color: var(--primary); font-weight: 600; }
.radio-group label:has(input:checked) { border-color: var(--primary); background: rgba(198, 146, 47, 0.08); }

/* ------------------- RESULTS & PILLARS ------------------- */
.four-pillars-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 15px; }
.pillar-card {
    background: rgba(15, 23, 42, 0.8); border: 1px solid var(--border-dark);
    border-radius: 12px; text-align: center; overflow: hidden;
}
.pillar-header {
    background: rgba(255, 255, 255, 0.03); padding: 12px 5px;
    font-size: 0.85rem; font-weight: 600; color: var(--text-muted);
    border-bottom: 1px solid var(--border-dark); text-transform: uppercase;
}
.stem, .branch { padding: 15px 5px; font-size: 1.6rem; font-weight: 700; font-family: 'Playfair Display', serif; }
.stem { border-bottom: 1px dashed var(--border-dark); }
.main-stem { color: var(--primary); }

.wuxing-bars { display: flex; flex-direction: column; gap: 12px; }
.wuxing-item { display: flex; align-items: center; gap: 15px; }
.wx-label { width: 45px; font-weight: 600; font-size: 0.95rem; }
.wx-track { flex: 1; height: 12px; background: rgba(255,255,255,0.05); border-radius: 6px; overflow: hidden; }
.wx-fill { height: 100%; border-radius: 6px; transition: width 1s cubic-bezier(0.4, 0, 0.2, 1); }

.text-kim { color: var(--wx-kim); } .bg-kim { background: var(--wx-kim); }
.text-moc { color: var(--wx-moc); } .bg-moc { background: var(--wx-moc); }
.text-thuy { color: var(--wx-thuy); } .bg-thuy { background: var(--wx-thuy); }
.text-hoa { color: var(--wx-hoa); } .bg-hoa { background: var(--wx-hoa); }
.text-tho { color: var(--wx-tho); } .bg-tho { background: var(--wx-tho); }

.badge-wrap { display: flex; justify-content: center; flex-wrap: wrap; gap: 10px; margin-top: 15px; }
.badge-gold {
    background: rgba(198, 146, 47, 0.15); color: var(--primary);
    padding: 8px 16px; border-radius: 20px; font-size: 0.9rem; font-weight: 500;
    border: 1px solid rgba(198, 146, 47, 0.3);
}

/* Paywall Premium Content */
.premium-container { position: relative; overflow: hidden; }
.premium-content h4 { color: var(--primary); margin: 25px 0 10px; font-family: 'Be Vietnam Pro', sans-serif; font-size: 1.15rem; }
.premium-content p { color: var(--text-muted); line-height: 1.7; margin-bottom: 10px; }
.blur-effect { filter: blur(7px); user-select: none; pointer-events: none; opacity: 0.5; }

.paywall-overlay {
    position: absolute; inset: 0; display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    background: linear-gradient(to bottom, rgba(15, 23, 42, 0.2) 0%, rgba(15, 23, 42, 0.95) 40%, rgba(15, 23, 42, 1) 100%);
    text-align: center; padding: 20px; z-index: 10;
}
.lock-icon { font-size: 3.5rem; color: var(--primary); margin-bottom: 15px; filter: drop-shadow(0 0 10px rgba(198,146,47,0.5)); }
.price-tag { font-size: 2.2rem; font-weight: 700; color: #fff; margin: 10px 0; font-family: 'Playfair Display', serif; }

/* ------------------- SEO CONTENT & ACCORDION ------------------- */
.seo-section { margin-top: 60px; padding-top: 40px; border-top: 1px solid var(--border-dark); }
.seo-section h2 { text-align: center; color: var(--primary); margin-bottom: 30px; font-size: 2rem; }
.seo-section h3 { color: var(--text-light); margin-bottom: 15px; font-size: 1.4rem; }
.seo-section p { color: var(--text-muted); line-height: 1.7; margin-bottom: 20px; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; }
.info-card { background: rgba(30,41,59,0.4); padding: 25px; border-radius: 12px; border: 1px solid var(--border-dark); transition: 0.3s; }
.info-card:hover { transform: translateY(-5px); border-color: rgba(198, 146, 47, 0.3); }
.info-card h4 { color: var(--primary); margin-bottom: 10px; font-size: 1.2rem; }

/* Accordion FAQ */
.faq-list { display: flex; flex-direction: column; gap: 15px; }
.faq-item { background: rgba(30,41,59,0.5); border: 1px solid var(--border-dark); border-radius: 10px; overflow: hidden; }
.faq-question {
    padding: 18px 20px; display: flex; justify-content: space-between; align-items: center;
    cursor: pointer; font-weight: 600; color: var(--text-light); transition: 0.3s;
}
.faq-question:hover { background: rgba(255,255,255,0.02); color: var(--primary); }
.faq-question i { transition: transform 0.3s; }
.faq-item.active .faq-question { color: var(--primary); border-bottom: 1px solid var(--border-dark); }
.faq-item.active .faq-question i { transform: rotate(180deg); }
.faq-answer { padding: 0 20px; max-height: 0; overflow: hidden; transition: max-height 0.4s ease, padding 0.4s ease; color: var(--text-muted); line-height: 1.6; }
.faq-item.active .faq-answer { padding: 20px; max-height: 500px; }

/* ------------------- FOOTER ------------------- */
.kth-footer { background: #0b1120; border-top: 1px solid var(--border-dark); padding: 60px 20px 20px; margin-top: 60px; }
.footer-grid { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-col h3 { color: #fff; font-family: 'Be Vietnam Pro', sans-serif; font-size: 1.1rem; margin-bottom: 20px; font-weight: 600; }
.footer-col p { color: var(--text-muted); line-height: 1.6; margin-bottom: 15px; font-size: 0.9rem; }
.footer-links { list-style: none; }
.footer-links li { margin-bottom: 12px; }
.footer-links a { color: var(--text-muted); text-decoration: none; transition: 0.3s; font-size: 0.9rem; }
.footer-links a:hover { color: var(--primary); padding-left: 5px; }

.subscribe-form { display: flex; gap: 10px; margin-top: 15px; }
.subscribe-form input { flex: 1; padding: 10px 15px; border-radius: 8px; border: 1px solid var(--border-dark); background: rgba(255,255,255,0.05); color: #fff; outline: none; }
.subscribe-form button { padding: 10px 20px; border-radius: 8px; background: var(--primary); color: #fff; font-weight: 600; }

.footer-bottom { text-align: center; padding-top: 20px; border-top: 1px solid rgba(255,255,255,0.05); color: var(--text-muted); font-size: 0.85rem; }

/* Modal & Toast */
.modal { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.85); backdrop-filter: blur(8px); z-index: 2000; align-items: center; justify-content: center; }
.modal.active { display: flex; animation: fadeIn 0.3s; }
.modal-content { background: #1e293b; width: 90%; max-width: 420px; border-radius: 16px; padding: 35px 30px; text-align: center; position: relative; border: 1px solid var(--border-dark); box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5); }
.close-btn { position: absolute; top: 15px; right: 20px; cursor: pointer; font-size: 1.5rem; color: var(--text-muted); }
.close-btn:hover { color: #fff; }

.toast-box { position: fixed; top: 80px; right: 20px; z-index: 9999; display: flex; flex-direction: column; gap: 10px; }
.toast { background: #1e293b; color: #fff; padding: 14px 24px; border-radius: 8px; font-size: 0.95rem; border-left: 4px solid var(--primary); box-shadow: 0 10px 25px rgba(0,0,0,0.4); transform: translateX(120%); transition: 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275); }
.toast.show { transform: translateX(0); }
.t-error { border-color: var(--wx-hoa); }
.t-success { border-color: var(--wx-moc); }

/* Responsive */
@media (max-width: 900px) {
    .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
    .nav-menu {
        display: none; position: absolute; top: 70px; left: 0; right: 0;
        background: #0f172a; flex-direction: column; gap: 0; padding: 20px;
        border-bottom: 1px solid var(--border-dark);
    }
    .nav-menu.active { display: flex; }
    .nav-menu > li { width: 100%; border-bottom: 1px solid rgba(255,255,255,0.05); }
    .nav-menu a { padding: 15px 10px; }
    .dropdown-menu { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; border: none; background: transparent; padding-left: 20px; display: none; }
    .nav-menu li.active .dropdown-menu { display: block; }
    .mobile-toggle { display: block; }
    .header-actions .btn-outline { display: none; }
    
    .hero h1 { font-size: 2rem; }
    .stats { gap: 20px; flex-wrap: wrap; }
    .form-grid { grid-template-columns: 1fr; }
    .four-pillars-grid { grid-template-columns: repeat(2, 1fr); }
    .grid-2 { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 30px; }
}

@keyframes fadeIn { from { opacity: 0; transform: translateY(-20px); } to { opacity: 1; transform: translateY(0); } }

/* ------------------- TRUST BAR MARQUEE ------------------- */
.trust-bar-container {
    width: 100%;
    overflow: hidden;
    padding: 10px 0;
    margin: 30px 0 40px;
}
.marquee-row-wrapper {
    display: flex;
    overflow: hidden;
    width: 100%;
}
.marquee-row-inner {
    display: flex;
    width: max-content;
    animation: marquee-scroll 40s linear infinite;
    gap: 12px;
    padding-left: 12px;
}
.marquee-row-inner:hover {
    animation-play-state: paused;
}
.marquee-row-inner.reverse {
    animation-direction: reverse;
}
.marquee-chip-new {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    background: rgba(30, 41, 59, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 30px;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-light);
    white-space: nowrap;
    backdrop-filter: blur(10px);
    transition: 0.3s;
}
.marquee-chip-new:hover {
    background: rgba(198, 146, 47, 0.15);
    border-color: rgba(198, 146, 47, 0.4);
    transform: translateY(-2px);
    color: var(--primary);
}
@keyframes marquee-scroll {
    from { transform: translateX(0); }
    to { transform: translateX(-50%); }
}

/* ------------------- DUAL COLUMN & SERVICES ------------------- */
@media (max-width: 1024px) {
    .grid-2-faq { grid-template-columns: 1fr !important; }
}
.services-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}
@media (max-width: 600px) {
    .services-grid { grid-template-columns: 1fr; }
}
.service-card {
    display: flex;
    gap: 15px;
    padding: 20px;
    text-decoration: none;
    align-items: flex-start;
    transition: 0.3s;
    background: rgba(30, 41, 59, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    backdrop-filter: blur(10px);
}
.service-card:hover {
    transform: translateY(-5px);
    border-color: rgba(198, 146, 47, 0.5);
    background: rgba(198, 146, 47, 0.1);
}
.service-icon {
    width: 45px;
    height: 45px;
    min-width: 45px;
    background: rgba(198, 146, 47, 0.15);
    color: var(--primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}
.service-card h4 {
    color: var(--text-light);
    margin: 0 0 8px 0;
    font-size: 1.05rem;
    font-weight: 600;
}
.service-card p {
    color: var(--text-muted);
    font-size: 0.85rem;
    line-height: 1.5;
    margin: 0;
}

@keyframes slow-spin {
    100% { transform: rotate(360deg); }
}