/**
 * ==========================================================================
 * HEADER, TOPBAR & NAVIGATION MENU (DÙNG BIẾN MÀU THEME VARIABLES)
 * ==========================================================================
 */

#site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- Topbar ---------- */
#pd-topbar {
    background: var(--brand-primary-dark);
    font-size: 0.775rem;
    color: rgba(255, 255, 255, 0.9);
    transition: all 0.3s ease;
}

#site-header.is-scrolled #pd-topbar {
    transform: translateY(-100%);
    margin-bottom: -2.2rem;
    opacity: 0;
}

#pd-topbar .topbar-inner {
    max-width: 85rem;
    margin: 0 auto;
    padding: 0.5rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

#pd-topbar .hotlines a {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    color: #fff;
    font-weight: 500;
    transition: color 0.2s ease;
}

#pd-topbar .hotlines a:hover {
    color: var(--brand-accent);
}

#pd-topbar .phone-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--brand-accent);
    box-shadow: 0 0 0 0 var(--brand-accent-shadow);
    animation: pd-pulse 1.8s infinite;
}

@keyframes pd-pulse {
    0%   { box-shadow: 0 0 0 0 var(--brand-accent-shadow); }
    70%  { box-shadow: 0 0 0 6px rgba(245, 158, 11, 0); }
    100% { box-shadow: 0 0 0 0 rgba(245, 158, 11, 0); }
}

/* ---------- Mainbar ---------- */
#pd-mainbar {
    background: rgba(255, 255, 255, 0.96);
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    transition: all 0.4s ease;
}

/* Hiệu ứng kính mờ khi cuộn trang */
#site-header.is-scrolled #pd-mainbar {
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.06);
    border-bottom: 1px solid rgba(255, 255, 255, 0.6);
}

#pd-mainbar .mainbar-inner {
    max-width: 85rem;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 5.5rem;
    transition: height 0.4s ease;
}

#site-header.is-scrolled #pd-mainbar .mainbar-inner {
    height: 4.5rem;
}

#pd-mainbar .logo-block img {
    height: 4.2rem;
    object-fit: contain;
    transition: all 0.4s ease;
}

#site-header.is-scrolled #pd-mainbar .logo-block img {
    height: 3.4rem;
}

/* ---------- Menu điều hướng Desktop ---------- */
.nav-link {
    position: relative;
    color: var(--text-main);
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.01em;
    padding: 0.5rem 1rem;
    transition: color 0.25s ease;
}

.nav-link::after {
    content: "";
    position: absolute;
    bottom: -4px;
    left: 50%;
    transform: translateX(-50%) scale(0);
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--brand-primary);
    transition: transform 0.25s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.nav-link:hover {
    color: var(--brand-primary);
}

.nav-link:hover::after,
.nav-link.is-active::after {
    transform: translateX(-50%) scale(1);
}

.nav-link.is-active {
    color: var(--brand-primary);
}

/* ---------- Nút Đặt Vé Header ---------- */
.booking-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, var(--brand-primary) 0%, var(--brand-primary-dark) 100%);
    color: #fff !important;
    border-radius: 50px;
    padding: 0.65rem 1.5rem;
    font-weight: 600;
    font-size: 0.85rem;
    letter-spacing: 0.02em;
    box-shadow: 0 4px 14px var(--brand-primary-shadow);
    transition: all 0.3s ease;
}

.booking-btn:hover {
    background: var(--brand-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--brand-primary-shadow);
}

.booking-btn:active {
    transform: translateY(0);
}

/* ---------- Mobile Menu & Drawer ---------- */
#mobile-toggle {
    color: var(--brand-primary);
    background: var(--brand-primary-light);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

#mobile-toggle:active {
    transform: scale(0.9);
}

#mobile-menu {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    border-top: 1px solid var(--border-color);
}

.mobile-link {
    display: flex;
    align-items: center;
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-color-light);
    color: var(--text-main);
    font-weight: 500;
    font-size: 0.95rem;
    transition: all 0.2s ease;
}

.mobile-link:hover,
.mobile-link.is-active { 
    color: var(--brand-primary);
    padding-left: 0.5rem;
}

/* Đệm khoảng trống body để không bị đè content dưới fixed header */
body {
    padding-top: 7.5rem;
}

@media (min-width: 1024px) {
    body {
        padding-top: 8.5rem;
    }
}