/* CSS DESIGN SYSTEM - PHÚ TRẦN TRAVEL JOURNEYS (DALAT PINE & MIST AESTHETIC) */

:root, html.dark-theme {
    --bg-color: #06110d;
    --text-color: #f1f8f5;
    --text-muted: #94a89d;
    
    --primary: #2d6a4f;
    --primary-light: #52b788;
    --primary-rgb: 45, 106, 79;
    
    --secondary: #d4a373;
    --secondary-light: #faedcd;
    --secondary-rgb: 212, 163, 115;
    
    --accent: #06b6d4;
    
    --gradient-pine: linear-gradient(135deg, #1b4332 0%, #2d6a4f 50%, #40916c 100%);
    --gradient-amber: linear-gradient(135deg, #d4a373 0%, #b07d62 100%);
    --gradient-card: linear-gradient(135deg, rgba(13, 27, 21, 0.85) 0%, rgba(27, 48, 38, 0.6) 100%);
    
    --card-bg: rgba(13, 27, 21, 0.75);
    --card-border: rgba(82, 183, 136, 0.15);
    --card-shadow: 0 12px 35px -10px rgba(0, 0, 0, 0.6);
    --card-hover-border: rgba(82, 183, 136, 0.45);
    
    --header-bg: rgba(6, 17, 13, 0.88);
    --header-border: rgba(82, 183, 136, 0.12);
    
    --timeline-line: rgba(82, 183, 136, 0.2);
    --toast-bg: rgba(13, 27, 21, 0.95);
    --toast-border: rgba(82, 183, 136, 0.4);
}

html.light-theme {
    --bg-color: #f4f9f6;
    --text-color: #0f241a;
    --text-muted: #4a6356;
    
    --primary: #1b4332;
    --primary-light: #2d6a4f;
    --primary-rgb: 27, 67, 50;
    
    --secondary: #b07d62;
    --secondary-light: #d4a373;
    --secondary-rgb: 176, 125, 98;
    
    --accent: #0891b2;
    
    --gradient-pine: linear-gradient(135deg, #2d6a4f 0%, #40916c 100%);
    --gradient-amber: linear-gradient(135deg, #b07d62 0%, #d4a373 100%);
    --gradient-card: linear-gradient(135deg, rgba(255, 255, 255, 0.92) 0%, rgba(232, 245, 233, 0.82) 100%);
    
    --card-bg: rgba(255, 255, 255, 0.9);
    --card-border: rgba(45, 106, 79, 0.15);
    --card-shadow: 0 10px 30px -10px rgba(27, 67, 50, 0.1);
    --card-hover-border: rgba(45, 106, 79, 0.4);
    
    --header-bg: rgba(244, 249, 246, 0.92);
    --header-border: rgba(45, 106, 79, 0.12);
    
    --timeline-line: rgba(45, 106, 79, 0.2);
    --toast-bg: rgba(255, 255, 255, 0.98);
    --toast-border: rgba(45, 106, 79, 0.3);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color 0.4s ease, color 0.4s ease;
    position: relative;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    letter-spacing: -0.02em;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

ul { list-style: none; }
img, video { max-width: 100%; display: block; }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* --- BACKGROUND BLOBS --- */
.travel-bg-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: 40px 40px;
    background-image: 
        linear-gradient(to right, rgba(82, 183, 136, 0.025) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(82, 183, 136, 0.025) 1px, transparent 1px);
    z-index: -2;
    pointer-events: none;
}

.blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    pointer-events: none;
    z-index: -1;
}

.blob-pine {
    width: 600px;
    height: 600px;
    top: -100px;
    left: -150px;
    background: rgba(45, 106, 79, 0.22);
}

.blob-amber {
    width: 500px;
    height: 500px;
    top: 35%;
    right: -100px;
    background: rgba(212, 163, 115, 0.16);
}

/* --- GLASS CARDS --- */
.glass-card {
    background: var(--gradient-card);
    backdrop-filter: blur(18px) saturate(160%);
    -webkit-backdrop-filter: blur(18px) saturate(160%);
    border: 1px solid var(--card-border);
    border-radius: 24px;
    box-shadow: var(--card-shadow);
    transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.35s ease, box-shadow 0.35s ease;
}

.glass-card:hover {
    border-color: var(--card-hover-border);
}

/* --- HEADER NAVBAR --- */
.glass-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 75px;
    z-index: 1000;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    background-color: var(--header-bg);
    border-bottom: 1px solid var(--header-border);
}

.header-container {
    max-width: 1200px;
    height: 100%;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand-logo {
    font-family: 'Outfit', sans-serif;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 8px;
}

.brand-icon {
    color: var(--primary-light);
    font-size: 1.6rem;
}

.brand-logo span {
    color: var(--secondary);
}

.destination-nav {
    display: flex;
    gap: 8px;
    background: rgba(0, 0, 0, 0.15);
    padding: 6px;
    border-radius: 30px;
    border: 1px solid var(--card-border);
}

html.light-theme .destination-nav {
    background: rgba(0, 0, 0, 0.04);
}

.nav-dest-btn {
    padding: 8px 18px;
    font-size: 0.88rem;
    font-weight: 600;
    border-radius: 20px;
    border: none;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 6px;
}

.nav-dest-btn:hover {
    color: var(--text-color);
}

.nav-dest-btn.active {
    background: var(--gradient-pine);
    color: white;
    box-shadow: 0 4px 15px rgba(45, 106, 79, 0.4);
}

.nav-dest-btn.coming-soon {
    opacity: 0.6;
    cursor: not-allowed;
}

.theme-toggle-btn {
    background: none;
    border: 1px solid var(--card-border);
    color: var(--text-color);
    width: 42px;
    height: 42px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.1rem;
    transition: all 0.3s ease;
}

.theme-toggle-btn:hover {
    background: var(--gradient-pine);
    color: white;
    border-color: transparent;
}

/* --- MAIN WRAPPER --- */
.main-travel-wrapper {
    padding-top: 105px;
}

.travel-section {
    padding: 60px 0;
    position: relative;
}

.section-alt {
    background-color: rgba(45, 106, 79, 0.03);
}

.section-title-wrapper {
    text-align: center;
    margin-bottom: 45px;
}

.section-title-wrapper h2 {
    font-size: 2.2rem;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.section-title-wrapper p {
    color: var(--text-muted);
    font-size: 1rem;
}

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

/* --- PERSONALIZED INVITATION BANNER --- */
.personalized-banner-wrapper {
    margin-bottom: 24px;
}

.personalized-card {
    padding: 24px 32px;
    display: flex;
    align-items: center;
    gap: 20px;
    border-color: var(--secondary);
    background: linear-gradient(135deg, rgba(212, 163, 115, 0.15) 0%, rgba(45, 106, 79, 0.15) 100%);
}

.invite-icon {
    font-size: 2.5rem;
    color: var(--secondary);
}

.invite-subtitle {
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--secondary);
    letter-spacing: 0.08em;
    display: block;
}

.invite-title {
    font-size: 1.5rem;
    color: var(--text-color);
    margin: 2px 0 4px;
}

/* --- HERO TRAVEL BANNER --- */
.hero-travel-section {
    padding: 20px 0 40px;
}

.hero-card {
    padding: 45px;
    position: relative;
    overflow: hidden;
}

.hero-badge-strip {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.active-badge {
    padding: 6px 16px;
    background: rgba(45, 106, 79, 0.2);
    border: 1px solid rgba(82, 183, 136, 0.35);
    color: var(--primary-light);
    font-weight: 700;
    font-size: 0.82rem;
    border-radius: 20px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.dates-pill {
    padding: 6px 16px;
    background: rgba(212, 163, 115, 0.15);
    border: 1px solid rgba(212, 163, 115, 0.3);
    color: var(--secondary);
    font-weight: 600;
    font-size: 0.82rem;
    border-radius: 20px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.hero-main-title {
    font-size: 3.4rem;
    line-height: 1.18;
    margin-bottom: 18px;
}

.highlight-text {
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-description {
    font-size: 1.08rem;
    color: var(--text-muted);
    max-width: 850px;
    line-height: 1.7;
    margin-bottom: 35px;
}

.stats-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
    gap: 20px;
    border-top: 1px solid var(--card-border);
    padding-top: 28px;
}

.stat-box {
    display: flex;
    align-items: center;
    gap: 14px;
}

.stat-box i {
    font-size: 1.8rem;
}

.icon-green { color: var(--primary-light); }
.icon-gold { color: var(--secondary); }
.icon-cyan { color: var(--accent); }
.icon-purple { color: #a78bfa; }

.stat-info {
    display: flex;
    flex-direction: column;
}

.stat-info strong {
    font-family: 'Outfit', sans-serif;
    font-size: 1.25rem;
    line-height: 1.2;
}

.stat-info span {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* --- VIRAL TOOLS WIDGET --- */
.grid-viral-tools {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.viral-card {
    padding: 30px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.viral-card h3 {
    font-size: 1.3rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.share-input-group {
    display: flex;
    gap: 10px;
    margin-top: 6px;
}

.share-input-group input {
    flex-grow: 1;
    padding: 12px 18px;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--card-border);
    color: var(--text-color);
    font-family: inherit;
    font-size: 0.95rem;
}

html.light-theme .share-input-group input {
    background: rgba(0, 0, 0, 0.03);
}

.btn-viral {
    padding: 12px 22px;
    font-size: 0.9rem;
    font-weight: 700;
    border-radius: 14px;
    cursor: pointer;
    border: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    white-space: nowrap;
}

.btn-pine {
    background: var(--gradient-pine);
    color: white;
    box-shadow: 0 4px 15px rgba(45, 106, 79, 0.35);
}

.btn-amber {
    background: var(--gradient-amber);
    color: white;
    box-shadow: 0 4px 15px rgba(212, 163, 115, 0.35);
}

.btn-viral:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.btn-block { width: 100%; }

/* --- VIRAL TRAVEL RECEIPT CARD --- */
.receipt-wrapper {
    max-width: 750px;
    margin: 0 auto;
    padding: 36px;
    border: 2px dashed var(--secondary);
    position: relative;
    background: linear-gradient(135deg, rgba(212, 163, 115, 0.08) 0%, rgba(13, 27, 21, 0.9) 100%);
}

.receipt-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.receipt-logo {
    font-family: 'Fira Code', monospace;
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--secondary);
    letter-spacing: 0.05em;
}

.receipt-stamp {
    font-family: 'Outfit', sans-serif;
    font-weight: 900;
    font-size: 0.85rem;
    padding: 4px 14px;
    border: 2px solid var(--primary-light);
    color: var(--primary-light);
    border-radius: 8px;
    transform: rotate(-4deg);
}

.receipt-body {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.r-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.95rem;
}

.r-row span:first-child {
    color: var(--text-muted);
}

.r-divider {
    border: none;
    border-top: 1px dashed var(--card-border);
    margin: 8px 0;
}

.r-total {
    font-size: 1.15rem;
    font-weight: 700;
}

.total-price {
    font-family: 'Fira Code', monospace;
    font-size: 1.4rem;
    color: var(--primary-light);
}

.r-subtotal {
    font-size: 1rem;
}

.per-person-price {
    font-family: 'Fira Code', monospace;
    font-size: 1.2rem;
    color: var(--secondary);
    font-weight: 700;
}

.receipt-footer {
    margin-top: 24px;
    padding-top: 16px;
    border-top: 1px dashed var(--card-border);
    text-align: center;
}

.barcode-strip {
    font-family: 'Fira Code', monospace;
    letter-spacing: 0.2em;
    color: var(--text-muted);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

/* --- DAY TABS --- */
.day-tabs-container {
    display: flex;
    justify-content: center;
    gap: 14px;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.day-tab-btn {
    padding: 14px 28px;
    border-radius: 20px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}

.day-tab-btn .day-num {
    font-family: 'Outfit', sans-serif;
    font-weight: 800;
    font-size: 1.1rem;
}

.day-tab-btn .day-date {
    font-size: 0.8rem;
}

.day-tab-btn:hover {
    color: var(--text-color);
    border-color: var(--primary-light);
    transform: translateY(-3px);
}

.day-tab-btn.active {
    background: var(--gradient-pine);
    color: white;
    border-color: transparent;
    box-shadow: 0 6px 25px rgba(45, 106, 79, 0.45);
}

/* --- TIMELINE CONTAINER --- */
.timeline-render-container {
    max-width: 900px;
    margin: 0 auto;
}

.day-timeline-wrapper {
    position: relative;
    padding-left: 32px;
}

.day-timeline-wrapper::before {
    content: '';
    position: absolute;
    top: 10px;
    left: 8px;
    width: 2px;
    height: calc(100% - 20px);
    background: var(--timeline-line);
}

.timeline-node {
    position: relative;
    margin-bottom: 30px;
}

.timeline-dot {
    position: absolute;
    top: 24px;
    left: -32px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--bg-color);
    border: 3px solid var(--primary-light);
    z-index: 2;
}

.type-food .timeline-dot { border-color: var(--secondary); }
.type-hotel .timeline-dot { border-color: #a78bfa; }
.type-sightseeing .timeline-dot { border-color: var(--primary-light); }
.type-transport .timeline-dot { border-color: var(--accent); }

.timeline-card {
    padding: 24px;
}

.node-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 10px;
}

.node-time {
    font-family: 'Fira Code', monospace;
    font-size: 0.85rem;
    font-weight: 700;
    padding: 4px 12px;
    background: rgba(82, 183, 136, 0.12);
    color: var(--primary-light);
    border-radius: 12px;
    border: 1px solid rgba(82, 183, 136, 0.25);
}

.node-tag {
    font-size: 0.75rem;
    font-weight: 700;
    padding: 3px 10px;
    border-radius: 10px;
    text-transform: uppercase;
}

.tag-food { background: rgba(212, 163, 115, 0.15); color: var(--secondary); border: 1px solid rgba(212, 163, 115, 0.3); }
.tag-hotel { background: rgba(167, 139, 250, 0.15); color: #a78bfa; border: 1px solid rgba(167, 139, 250, 0.3); }
.tag-sightseeing { background: rgba(82, 183, 136, 0.15); color: var(--primary-light); border: 1px solid rgba(82, 183, 136, 0.3); }
.tag-transport { background: rgba(6, 182, 212, 0.15); color: var(--accent); border: 1px solid rgba(6, 182, 212, 0.3); }

.node-title {
    font-size: 1.3rem;
    margin-bottom: 6px;
}

.node-location {
    font-size: 0.92rem;
    color: var(--secondary);
    font-weight: 600;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.node-notes {
    font-size: 0.92rem;
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 14px;
}

.btn-map-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--primary-light);
    padding: 6px 14px;
    background: rgba(82, 183, 136, 0.08);
    border: 1px solid rgba(82, 183, 136, 0.2);
    border-radius: 12px;
    transition: all 0.25s ease;
}

.btn-map-link:hover {
    background: var(--gradient-pine);
    color: white;
    border-color: transparent;
}

/* --- ROUTE MAPS VIEW --- */
.maps-view-wrapper {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.map-card-item {
    padding: 24px;
}

.map-card-item h3 {
    font-size: 1.4rem;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.map-image-wrapper {
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--card-border);
}

.map-image-wrapper img {
    width: 100%;
    height: auto;
    object-fit: cover;
}

/* --- BUDGET SECTION --- */
.budget-summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-bottom: 40px;
}

.budget-summary-card {
    padding: 30px;
    text-align: center;
}

.b-label {
    font-size: 0.88rem;
    color: var(--text-muted);
    display: block;
    margin-bottom: 8px;
}

.b-value {
    font-family: 'Outfit', sans-serif;
    font-size: 2.2rem;
    font-weight: 800;
    margin-bottom: 6px;
}

.gradient-green { background: linear-gradient(135deg, var(--primary-light) 0%, #40916c 100%); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.gradient-gold { background: linear-gradient(135deg, var(--secondary) 0%, #b07d62 100%); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }

.b-sub {
    font-size: 0.82rem;
    color: var(--text-muted);
}

.expense-filters {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 30px;
}

.expense-filter-btn {
    padding: 10px 20px;
    border-radius: 20px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    color: var(--text-muted);
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 6px;
}

.expense-filter-btn:hover {
    color: var(--text-color);
    border-color: var(--primary-light);
}

.expense-filter-btn.active {
    background: var(--gradient-pine);
    color: white;
    border-color: transparent;
    box-shadow: 0 4px 15px rgba(45, 106, 79, 0.4);
}

.expense-list-container {
    padding: 24px;
}

.expense-table {
    width: 100%;
    border-collapse: collapse;
}

.expense-table th {
    text-align: left;
    padding: 14px;
    color: var(--text-muted);
    font-size: 0.85rem;
    border-bottom: 1px solid var(--card-border);
}

.expense-table td {
    padding: 16px 14px;
    font-size: 0.95rem;
    border-bottom: 1px dashed var(--card-border);
}

.expense-table tr:last-child td {
    border-bottom: none;
}

.expense-cost {
    font-family: 'Fira Code', monospace;
    font-weight: 700;
    color: var(--secondary);
}

/* --- GALLERY SECTION --- */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.gallery-item {
    position: relative;
    border-radius: 18px;
    overflow: hidden;
    aspect-ratio: 4/3;
    cursor: pointer;
    border: 1px solid var(--card-border);
}

.gallery-item img, .gallery-item video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.gallery-item:hover img, .gallery-item:hover video {
    transform: scale(1.06);
}

.gallery-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8) 0%, transparent 60%);
    opacity: 0;
    transition: opacity 0.3s ease;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 16px;
}

.gallery-item:hover .gallery-overlay {
    opacity: 1;
}

.gallery-caption {
    color: white;
    font-size: 0.88rem;
    font-weight: 500;
}

.video-play-badge {
    position: absolute;
    top: 12px;
    right: 12px;
    background: rgba(0, 0, 0, 0.6);
    color: white;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 0.9rem;
    backdrop-filter: blur(4px);
}

/* --- LIGHTBOX OVERLAY MODAL --- */
.lightbox-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.88);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 2000;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 24px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.lightbox-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.lightbox-container {
    max-width: 900px;
    width: 100%;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
}

.lightbox-close-btn {
    position: absolute;
    top: -45px;
    right: 0;
    background: rgba(255, 255, 255, 0.15);
    border: none;
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    display: flex;
    justify-content: center;
    align-items: center;
}

.lightbox-media-wrapper {
    max-width: 100%;
    max-height: 75vh;
    border-radius: 16px;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
}

.lightbox-media-wrapper img, .lightbox-media-wrapper video {
    max-width: 100%;
    max-height: 75vh;
    object-fit: contain;
    border-radius: 12px;
}

.lightbox-caption {
    margin-top: 16px;
    color: white;
    font-size: 1rem;
    text-align: center;
}

/* --- BACK TO TOP BUTTON --- */
.back-to-top-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background: var(--gradient-pine);
    color: white;
    border: none;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.1rem;
    box-shadow: 0 6px 20px rgba(45, 106, 79, 0.4);
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s ease;
    z-index: 999;
}

.back-to-top-btn.visible {
    opacity: 1;
    pointer-events: auto;
}

.back-to-top-btn:hover {
    transform: translateY(-4px);
}

/* --- TOAST NOTIFICATION --- */
.toast {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background-color: var(--toast-bg);
    border: 1px solid var(--toast-border);
    color: var(--text-color);
    padding: 12px 26px;
    border-radius: 14px;
    font-weight: 500;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
    z-index: 2100;
    opacity: 0;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    pointer-events: none;
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

/* --- FOOTER --- */
.travel-footer {
    padding: 35px 0;
    border-top: 1px solid var(--card-border);
    background-color: rgba(0, 0, 0, 0.2);
}

.footer-flex {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    font-size: 0.88rem;
    color: var(--text-muted);
}

/* --- RESPONSIVE MEDIA QUERIES --- */
@media (max-width: 768px) {
    .grid-viral-tools {
        grid-template-columns: 1fr;
    }

    .share-input-group {
        flex-direction: column;
    }

    .header-container {
        padding: 0 16px;
    }
    
    .destination-nav {
        display: none;
    }

    .hero-card {
        padding: 28px 20px;
    }

    .hero-main-title {
        font-size: 2.3rem;
    }

    .section-title-wrapper h2 {
        font-size: 1.7rem;
    }

    .budget-summary-grid {
        grid-template-columns: 1fr;
    }

    .gallery-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    }
}