:root {
    --bg: #f4f6f9;
    --surface: #ffffff;
    --primary: #1d4ed8;
    --primary-dark: #1e3a8a;
    --primary-soft: #eff6ff;
    --text: #111827;
    --text-secondary: #4b5563;
    --border: #e5e7eb;
    --zalo: #0068ff;
    --call: #dc2626;
    --radius: 20px;
}

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

html {
    scroll-behavior: smooth;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Inter, sans-serif;
    color: var(--text);
    background-color: var(--bg);
    line-height: 1.65;
}

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

.container {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 20px;
}

/* NAVBAR */
.navbar {
    position: sticky;
    top: 12px;
    z-index: 40;
    padding: 0 16px;
}

.nav-content {
    height: 66px;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border);
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
}

.brand-dot {
    width: 12px;
    height: 12px;
    background: var(--primary);
    border-radius: 50%;
}

.brand-name {
    display: block;
    font-weight: 800;
    font-size: 1.05rem;
    color: var(--primary-dark);
}

.brand-sub {
    display: block;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.nav-menu {
    display: flex;
    gap: 24px;
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.nav-menu a:hover { color: var(--primary); }

.nav-cta {
    background-color: var(--primary);
    color: #ffffff;
    font-weight: 700;
    font-size: 0.9rem;
    padding: 10px 18px;
    border-radius: 12px;
}

/* HERO */
.hero {
    padding: 48px 0 32px;
}

.hero-text {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 28px;
    padding: 56px 48px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.03);
}

.status-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--primary-soft);
    color: var(--primary-dark);
    padding: 6px 14px;
    border-radius: 999px;
    font-size: 0.82rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.pulse-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: #16a34a;
}

.hero h1 {
    font-size: 2.85rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.18;
    margin-bottom: 18px;
}

.hero h1 .highlight { color: var(--primary); }

.hero-lead {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 32px;
    max-width: 650px;
}

.hero-buttons {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.btn {
    padding: 14px 26px;
    border-radius: 14px;
    font-weight: 700;
    font-size: 0.96rem;
    transition: 0.2s;
}

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

.btn-primary:hover { background-color: var(--primary-dark); }

.btn-outline {
    background-color: var(--bg);
    color: var(--text);
}

.hero-meta {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
}

.hero-meta strong { display: block; font-size: 1rem; color: var(--primary-dark); }
.hero-meta span { font-size: 0.85rem; color: var(--text-secondary); }

/* SECTIONS */
.section { padding: 48px 0; }
.section-alt { background: transparent; }

.section-tag {
    display: inline-block;
    background: var(--primary-soft);
    color: var(--primary);
    padding: 4px 12px;
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.section-head { margin-bottom: 32px; }
.section-head h2, .about-card h2, .location-info h2 {
    font-size: 1.85rem;
    font-weight: 800;
    margin-bottom: 10px;
}

.about-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 40px;
}

.about-card p {
    color: var(--text-secondary);
    margin-bottom: 14px;
}

/* SERVICES */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}

.service-item {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
}

.service-num {
    width: 36px;
    height: 36px;
    background: var(--primary-soft);
    color: var(--primary);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 0.85rem;
    margin-bottom: 16px;
}

.service-item h3 { font-size: 1.08rem; margin-bottom: 8px; }
.service-item p { font-size: 0.92rem; color: var(--text-secondary); }

/* LOCATION */
.location-grid {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 36px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    align-items: center;
}

.address-highlight {
    background: var(--primary-soft);
    color: var(--primary-dark);
    padding: 14px 16px;
    border-radius: 12px;
    margin-bottom: 16px;
    font-size: 0.95rem;
}

.tags-wrap {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 16px;
}

.area-tag {
    background: var(--bg);
    padding: 6px 12px;
    border-radius: 999px;
    font-size: 0.84rem;
    font-weight: 600;
}

.map-frame {
    height: 340px;
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--border);
}

/* FOOTER */
.footer {
    background-color: var(--primary-dark);
    color: #dbeafe;
    padding: 48px 0 24px;
    margin-top: 32px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 40px;
}

.footer-brand { color: #ffffff; font-size: 1.25rem; font-weight: 800; margin-bottom: 12px; }
.footer h4 { color: #ffffff; margin-bottom: 12px; }
.footer-list { list-style: none; font-size: 0.92rem; }
.footer-list li { margin-bottom: 8px; }
.footer-list a { color: #93c5fd; font-weight: 700; }
.footer-copy {
    margin-top: 36px;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    font-size: 0.82rem;
    text-align: center;
}

/* QUICK DOCK */
.quick-dock {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 50;
    display: flex;
    gap: 10px;
}

.dock-btn {
    color: #ffffff;
    font-weight: 700;
    font-size: 0.88rem;
    padding: 12px 18px;
    border-radius: 14px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.18);
}

.dock-zalo { background-color: var(--zalo); }
.dock-call { background-color: var(--call); }

@media (max-width: 900px) {
    .services-grid { grid-template-columns: repeat(2, 1fr); }
    .location-grid, .footer-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
    .nav-menu { display: none; }
    .hero-text { padding: 32px 24px; }
    .hero h1 { font-size: 2rem; }
    .hero-meta { grid-template-columns: 1fr; gap: 14px; }
    .services-grid { grid-template-columns: 1fr; }
    .quick-dock { left: 16px; right: 16px; bottom: 14px; }
    .dock-btn { flex: 1; text-align: center; }
}

/* GALLERY HÌNH ẢNH THỰC TẾ */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.gallery-item {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: 0.25s;
}

.gallery-item:hover {
    border-color: var(--accent, var(--primary));
    transform: translateY(-2px);
}

.gallery-item img {
    width: 100%;
    height: 280px;
    object-fit: cover;
    display: block;
}

.gallery-item figcaption {
    padding: 14px 18px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
}

@media (max-width: 640px) {
    .gallery-grid {
        grid-template-columns: 1fr;
    }
    .gallery-item img {
        height: 220px;
    }
}