/* ============ VARIABLES (LIGHT THEME) ============ */
:root {
    --bg-color: #f8fafc; /* Nền trắng xám chuẩn OTA */
    --surface-color: #ffffff;
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --text-muted: #9ca3af;
    --border-color: #e2e8f0;
    
    /* Brand Colors */
    --brand-blue: #2563eb;
    --brand-blue-hover: #1d4ed8;
    --zalo-color: #0068ff;
    
    /* Theme Accents */
    --accent-sunworld: #f59e0b;
    --accent-vinwonders: #e11d48;
    --accent-ttc: #10b981;

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-hover: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

    --font-main: 'Inter', sans-serif;
}

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

html, body {
    overflow-x: hidden;
    width: 100%;
}

body {
    font-family: var(--font-main);
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6; /* Tăng nhẹ để tránh cắt chân chữ g, y, p */
    -webkit-font-smoothing: antialiased;
    overflow-wrap: break-word; /* Chống tràn chữ dài */
    word-wrap: break-word;
    hyphens: auto;
}

/* ============ CUSTOM SCROLLBAR ============ */
::-webkit-scrollbar {
    width: 8px; /* Khá hẹp để thanh mảnh */
    height: 8px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: rgba(148, 163, 184, 0.4);
    border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
    background: rgba(100, 116, 139, 0.8);
}

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

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
}
@media (max-width: 480px) {
    .container { padding: 0 1rem; } /* Co lại chút cho máy siêu nhỏ */
}

.text-center { text-align: center; }

h1, h2, h3 { font-weight: 700; color: var(--text-primary); }

.btn {
    font-family: var(--font-main);
    cursor: pointer;
    border: none;
    outline: none;
    font-weight: 600;
}

/* ============ HEADER ============ */
.top-nav {
    background: var(--surface-color);
    border-bottom: 1px solid var(--border-color);
}
.nav-wrap {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}
.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--brand-blue);
    display: flex;
    align-items: center;
    gap: 8px;
}
.btn-hotline {
    background: var(--brand-blue);
    color: white;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    gap: 8px;
    transition: background 0.2s;
}
.btn-hotline:hover { background: var(--brand-blue-hover); }

/* ============ HERO INTRO ============ */
.page-intro {
    padding: 3rem 0;
    background: linear-gradient(180deg, #e0f2fe 0%, var(--bg-color) 100%);
}
.main-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: #0f172a;
}
.subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ============ SPLIT LAYOUT ============ */
.split-layout {
    display: flex;
    gap: 2rem;
    align-items: flex-start;
    padding-top: 2rem;
}

.map-column {
    flex: 0 0 45%;
    position: sticky;
    top: 90px;
    height: calc(100vh - 120px);
    background: #e2e8f0; /* Basic map background color */
    border-radius: var(--radius-lg);
    box-shadow: inset 0 2px 4px 0 rgba(0, 0, 0, 0.05);
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
}

.map-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
}

.map-artwork {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

/* Các Điểm Pin (Ghim) */
#pins-container {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    pointer-events: none; /* Các pin con sẽ có pointer-events auto để click được */
}

.map-pin {
    position: absolute;
    transform: translate(-50%, -100%);
    pointer-events: auto;
    cursor: pointer;
    z-index: 10;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 32px;
    height: 32px;
    background: white;
    border-radius: 50%;
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
    border: 2px solid #0f172a;
    transition: transform 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275), z-index 0.2s;
}

.map-pin:hover,
.map-pin.pin-hover-active {
    transform: translate(-50%, -100%) scale(1.3);
    z-index: 20;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
    border-color: var(--brand-blue);
}
.map-pin.pin-hover-active .pin-pulse {
    animation: mapPulseAnim 1s infinite; /* Đẩy nhanh nhịp đập khi được active */
}

.pin-emoji {
    font-size: 1rem;
    line-height: 1;
}

/* Vòng sáng nhấp nháy (Pulse Animation) */
.pin-pulse {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    width: 100%; height: 100%;
    border-radius: 50%;
    animation: mapPulseAnim 2s infinite;
    z-index: -1;
}
.pulse-mienbac .pin-pulse { background: rgba(99, 102, 241, 0.5); }
.pulse-mientrung .pin-pulse { background: rgba(234, 179, 8, 0.5); }
.pulse-miennam .pin-pulse { background: rgba(34, 197, 94, 0.5); }

@keyframes mapPulseAnim {
    0% { transform: translate(-50%, -50%) scale(1); opacity: 1; }
    100% { transform: translate(-50%, -50%) scale(2.5); opacity: 0; }
}

.list-column {
    flex: 1;
    min-width: 0; /* Tránh tràn layout */
}

/* ============ SEARCH BAR ============ */
.search-container {
    position: relative;
    margin-bottom: 1.5rem;
    width: 100%;
}
.search-container .search-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
    font-size: 1.2rem;
}
#main-search {
    width: 100%;
    padding: 1rem 1rem 1rem 3.2rem;
    border: 2px solid #e2e8f0;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.2s;
    background: white;
    color: var(--text-primary);
}
#main-search:focus {
    outline: none;
    border-color: var(--brand-blue);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}
.search-suggestions {
    position: absolute;
    top: calc(100% + 5px);
    left: 0;
    right: 0;
    background: white;
    border: 1px solid #e2e8f0;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    z-index: 50;
    list-style: none;
    padding: 0;
    margin: 0;
    max-height: 300px;
    overflow-y: auto;
    display: none;
}
.search-suggestions.active {
    display: block;
}
.suggestion-item {
    padding: 12px 15px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid #f1f5f9;
    transition: background 0.2s;
}
.suggestion-item:last-child {
    border-bottom: none;
}
.suggestion-item:hover {
    background: #f8fafc;
}
.suggestion-title {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.95rem;
}
.suggestion-loc {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* ============ FILTER BAR ============ */
.filter-bar {
    background: var(--surface-color);
    padding: 1rem 1.25rem; /* Thu nhỏ padding */
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
    margin-bottom: 1.5rem;
}
.filter-groups {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}
.filter-group {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}
.fg-label {
    font-weight: 600;
    font-size: 0.85rem; /* Thu nhỏ label */
    color: var(--text-secondary);
    min-width: 90px;
}
.filter-btn {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    padding: 5px 12px; /* Thu nhỏ button */
    border-radius: 20px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    transition: all 0.2s ease;
}
.filter-btn:hover {
    background: #f1f5f9;
    color: var(--text-primary);
}
/* Active States */
.filter-btn.active[data-type="region"] {
    background: var(--brand-blue);
    color: white;
    border-color: var(--brand-blue);
}
.filter-btn.active[data-filter="sunworld"] { background: var(--accent-sunworld); color: white; border-color: var(--accent-sunworld); }
.filter-btn.active[data-filter="vinwonders"] { background: var(--accent-vinwonders); color: white; border-color: var(--accent-vinwonders); }
.filter-btn.active[data-filter="ttc"] { background: var(--accent-ttc); color: white; border-color: var(--accent-ttc); }

/* ============ MAIN GRID ============ */
.results-info {
    margin: 2rem 0;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--border-color);
}
#results-title { font-size: 1.25rem; }

.destinations-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
    padding-bottom: 4rem;
}

/* Theo hướng Neo-Minimalist (Pastel + Rounded) */
.dest-card {
    background: var(--surface-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: none;
    border: 1px solid var(--border-color);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    position: relative;
}
.dest-card:hover {
    border-color: var(--brand-blue);
    background: #fdfdfd;
}

/* Biểu tượng mở rộng (Chevron) */
.card-header-flex {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}
.expand-icon {
    font-size: 0.9rem;
    color: var(--text-muted);
    transition: transform 0.3s;
    margin-top: 5px;
}
.dest-card.expanded .expand-icon {
    transform: rotate(180deg);
}

.card-expand-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease-out, opacity 0.3s;
    opacity: 0;
}

.dest-card.expanded .card-expand-content {
    max-height: 500px; /* Chiều cao tối đa khi mở */
    opacity: 1;
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px dashed var(--border-color);
}

/* Theme Colors cho các Vùng Miền */
.card-theme-mienbac { background-color: #f1f5f9; border-color: #cbd5e1; } /* Slate Pastel */
.card-theme-mientrung { background-color: #fef08a; border-color: #fde047; } /* Yellow Pastel */
.card-theme-miennam { background-color: #dcfce7; border-color: #bbf7d0; } /* Green Pastel */

.dest-card.hidden { display: none; }

/* Animation Staggered Fade Up */
.card-anim {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeUp 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes fadeUp {
    0% {
        opacity: 0;
        transform: translateY(20px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Card Elements */
.card-content {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.card-tags {
    display: flex;
    gap: 8px;
    margin-bottom: 15px;
    flex-wrap: wrap;
}
.tag-region, .tag-brand {
    font-size: 0.75rem;
    font-weight: 700;
    padding: 6px 12px;
    border-radius: 20px;
}
.tag-region {
    background: #0f172a;
    color: white;
}
.tag-brand {
    background: rgba(255, 255, 255, 0.7);
    color: #0f172a;
    border: 1px solid rgba(0,0,0,0.1);
}

.card-title {
    font-size: 1.3rem;
    font-weight: 800;
    margin-bottom: 10px;
    line-height: 1.3;
    color: #0f172a;
}
.card-loc {
    font-size: 0.85rem;
    color: #475569;
    font-weight: 600;
    margin-bottom: 12px;
}
.card-desc {
    font-size: 0.95rem;
    color: #334155;
    line-height: 1.6;
    margin-bottom: 25px; /* Push CTA to bottom */
    display: -webkit-box;
    -webkit-line-clamp: 3; /* Nới lỏng lên 3 dòng */
    line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
}

.card-cta {
    margin-top: auto;
    background: white;
    padding: 12px 16px;
    border-radius: 14px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border: 1px solid rgba(0,0,0,0.05);
    box-shadow: 0 2px 4px rgba(0,0,0,0.02);
    transition: all 0.2s;
}
.card-cta:hover {
    background: var(--zalo-color);
    color: white;
}
.card-cta:hover .cta-text, .card-cta:hover .cta-icon {
    color: white;
}
.cta-text {
    font-weight: 700;
    font-size: 0.95rem;
    color: #0f172a;
}
.cta-icon {
    font-size: 1.25rem;
    color: var(--zalo-color);
}

/* ================================== */
.btn-primary {
    background: var(--brand-blue);
    color: white;
    padding: 10px 20px;
    border-radius: var(--radius-sm);
}

/* ============ MODAL ============ */
.backdrop {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(15, 23, 42, 0.7);
    backdrop-filter: blur(4px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
    z-index: 999;
}
.backdrop.show { opacity: 1; pointer-events: auto; }
.booking-modal {
    position: fixed;
    top: 50%; left: 50%;
    transform: translate(-50%, -45%);
    background: var(--surface-color);
    width: 90%;
    max-width: 500px;
    border-radius: var(--radius-lg);
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: var(--shadow-hover);
    overflow: hidden;
}
.booking-modal.open {
    opacity: 1;
    transform: translate(-50%, -50%);
    pointer-events: auto;
}

.modal-banner {
    width: 100%;
    height: 160px;
    background: linear-gradient(135deg, #1e3a8a, #3b82f6);
}
.close-modal {
    position: absolute;
    top: 15px; right: 15px;
    background: rgba(0,0,0,0.4);
    color: white;
    border: none;
    width: 30px; height: 30px;
    border-radius: 50%;
    cursor: pointer;
}
.modal-body { padding: 2rem; }
.modal-badge {
    background: var(--bg-color);
    color: var(--text-secondary);
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    border: 1px solid var(--border-color);
}
#modal-title { margin: 12px 0; font-size: 1.5rem; line-height: 1.3; }
.modal-meta {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
}
.modal-desc {
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 25px;
}
.btn-zalo-large {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 15px;
    background: var(--zalo-color);
    color: white;
    border-radius: var(--radius-md);
    font-weight: 700;
    font-size: 1.05rem;
    transition: background 0.2s;
}
.btn-zalo-large:hover { background: #0056d6; }

/* ============ FOOTER ============ */
.site-footer {
    padding: 2rem 0;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* ============ MOBILE RESPONSIVE ============ */
@media (max-width: 768px) {
    /* Split layout becomes stacked */
    .split-layout {
        flex-direction: column;
        padding-top: 1rem;
        gap: 1.5rem;
        width: 100%;
        margin: 0 auto;
    }
    .list-column {
        width: 100%;
        max-width: 500px; /* Gom nội dung vào giữa nếu màn hình rộng */
        margin: 0 auto;
    }
    .map-column {
        flex: none;
        width: 100%;
        height: 35vh;
        max-height: 320px;
        min-height: 250px;
        position: relative;
        top: 0;
    }
    
    .filter-bar { 
        padding: 1.25rem 1rem; 
        width: 100%;
        margin: 0 auto;
    }  
    .page-intro { 
        padding: 2rem 1rem; 
        text-align: center;
    } 
    .main-title { 
        font-size: clamp(1.4rem, 6.5vw, 1.8rem); 
        line-height: 1.25; 
        word-break: break-word; 
    }
    .subtitle { 
        font-size: clamp(0.9rem, 4vw, 1rem); 
        padding: 0 5%; 
        line-height: 1.5;
        margin: 0 auto;
    }
    .nav-wrap { height: 64px; padding: 0 1rem; }
    .logo { font-size: 1.3rem; }
    
    /* Header Hotline */
    .btn-hotline span { display: none; }
    .btn-hotline { padding: 10px; width: 42px; height: 42px; display: flex; justify-content: center; align-items: center; border-radius: 50%; }

    /* Horizontal Scroll Filters */
    .filter-groups { gap: 1rem; }
    .filter-group { 
        flex-wrap: nowrap; 
        overflow-x: auto; 
        padding-bottom: 5px;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
    }
    .filter-group::-webkit-scrollbar { display: none; }
    
    .fg-label { 
        flex-shrink: 0;
        font-size: 0.9rem;
        min-width: auto;
        padding-right: 5px;
    }
    .filter-btn {
        flex-shrink: 0;
        white-space: nowrap;
        font-size: 0.85rem;
        padding: 6px 14px;
    }

    /* Grid adjust */
    .destinations-grid { 
        grid-template-columns: 1fr;
        gap: 1rem;
        padding-bottom: 2rem;
    }
    
    .card-content {
        padding: 1.25rem;
    }
    .card-title {
        font-size: clamp(1.1rem, 4.5vw, 1.25rem);
    }
    .card-tags {
        flex-wrap: wrap; /* Tránh tràn chữ thẻ tag */
    }
    
    /* Modal responsive */
    .booking-modal { width: 95%; max-width: 400px; }
    .modal-banner { height: 120px; }
    .modal-body { padding: 1.5rem; }
    #modal-title { font-size: 1.35rem; }
    .btn-zalo-large { font-size: 0.95rem; padding: 12px; font-weight: 600; }
}