/* Modern Light Theme matching hoanpv.id.vn */
:root {
    --primary-color: #2563eb; /* Bright Blue */
    --primary-glow: rgba(37, 99, 235, 0.4);
    --bg-light: #f8fafc;
    --text-main: #1e293b;
    --text-muted: #64748b;
    --glass-bg: rgba(255, 255, 255, 0.85);
    --glass-border: rgba(0, 0, 0, 0.05);
    --panel-radius: 20px;
    --transition-smooth: all 0.5s cubic-bezier(0.25, 1, 0.25, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

html, body {
    width: 100%;
    height: 100%;
    position: fixed; /* Stop bouncing/scrolling entirely */
}

body {
    font-family: 'Open Sans', sans-serif;
    background-color: var(--bg-light);
    color: var(--text-main);
    overflow: hidden;
}

/* Fullscreen Map */
.map-fullscreen {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

/* UI Overlay Container */
.ui-overlay {
    position: absolute;
    inset: 0;
    z-index: 10;
    pointer-events: none;
    display: flex;
    justify-content: space-between;
    overflow: hidden;
    padding: 1.5rem;
}

/* Glassmorphism Generic */
.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
    border-radius: var(--panel-radius);
    pointer-events: auto;
}

/* Scrollbar styling */
.scroll-hidden {
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--primary-color) transparent;
}
.scroll-hidden::-webkit-scrollbar { width: 4px; }
.scroll-hidden::-webkit-scrollbar-thumb { background: var(--primary-color); border-radius: 10px; }

/* Left Dashboard */
.dashboard-panel {
    width: 380px; /* Increased from 360px */
    height: calc(100vh - 3rem);
    display: flex;
    flex-direction: column;
    padding: 2rem 1.5rem;
    overflow: hidden; /* Ensure box-shadow on items isn't clipped outside */
}

header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.logo-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, #2563eb, #0ea5e9);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    box-shadow: 0 4px 15px var(--primary-glow);
}

header h1 {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    line-height: 1.1;
    color: var(--text-main);
}

header p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.controls {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 2rem;
    padding-right: 15px; /* Added padding to prevent hover shadows from being clipped by scrollbar */
    margin-right: -15px; /* Offset the padding internally */
}

h3 {
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    margin-bottom: 1rem;
    font-weight: 600;
}

/* Filter Tags */
.tags-container {
    display: flex;
    align-items: center; /* căn giữa trên dưới */
    flex-wrap: nowrap;
    overflow-x: auto;
    gap: 0.5rem;
    padding: 0.25rem 0 0.25rem 0; /* thêm padding top để không gọt mất viền/shadow khi hover/transform */
    scrollbar-width: none; /* Firefox */
}

.tags-container::-webkit-scrollbar {
    display: none; /* Safari and Chrome */
}

.tag-btn {
    flex-shrink: 0;
    padding: 0.5rem 1rem;
    border: 1px solid var(--glass-border);
    border-radius: 30px;
    background: rgba(0, 0, 0, 0.03);
    color: var(--text-main);
    font-family: inherit;
    font-size: 0.85rem;
    cursor: pointer;
    font-weight: 500;
    transition: var(--transition-smooth);
}

.tag-btn:hover {
    background: rgba(0, 0, 0, 0.08);
    transform: translateY(-2px);
}

.tag-btn.active {
    background: var(--primary-color);
    color: #fff;
    border-color: var(--primary-color);
    box-shadow: 0 4px 15px var(--primary-glow);
}

/* Timeline */
.timeline-container {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    padding-bottom: 2rem;
}

.timeline-year-group {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.timeline-year {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-main);
    position: relative;
    padding-left: 1rem;
}

.timeline-year::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 16px;
    background: var(--primary-color);
    border-radius: 4px;
}

.timeline-item {
    padding: 1rem;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.5);
    border: 1px solid var(--glass-border);
    cursor: pointer;
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    box-shadow: 0 2px 10px rgba(0,0,0,0.02);
    margin-left: 1rem;
}

.timeline-item:hover {
    background: #fff;
    border-color: var(--primary-color);
    transform: translateX(5px);
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
}

.timeline-date {
    font-size: 0.75rem;
    color: var(--primary-color);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 700;
}

.timeline-title {
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--text-main);
}

/* Stats Overview */
.stats-overview {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--glass-border);
}

.stat-box {
    flex: 1;
    background: rgba(37, 99, 235, 0.05); /* very light primary */
    border-radius: 12px;
    padding: 0.8rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    border: 1px solid rgba(37, 99, 235, 0.1);
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1;
    margin-bottom: 0.2rem;
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
}

/* Detail Panel Right */
.detail-panel {
    width: 420px;
    height: calc(100vh - 3rem);
    position: relative;
    padding: 0;
    transform: translateX(0);
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.4s ease;
    display: flex;
    flex-direction: column;
}

.detail-panel.hidden {
    transform: translateX(120%);
    opacity: 0;
    pointer-events: none;
}

.detail-content {
    flex: 1;
    padding: 2rem;
}

.close-btn {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: rgba(0, 0, 0, 0.05);
    border: none;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    cursor: pointer;
    color: var(--text-main);
    z-index: 20;
    backdrop-filter: blur(5px);
    transition: var(--transition-smooth);
}
.close-btn:hover { 
    background: rgba(0, 0, 0, 0.1); 
    transform: rotate(90deg); 
    color: var(--primary-color);
}

/* Location Header inside detail */
.location-title {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    line-height: 1.2;
    color: var(--text-main);
}

.location-date {
    color: var(--primary-color);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.tags-list {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 2rem;
}
.tags-list span {
    font-size: 0.75rem;
    padding: 0.3rem 0.8rem;
    background: rgba(0, 0, 0, 0.05);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    color: var(--text-muted);
    font-weight: 500;
}

/* Photos */
.photo-gallery {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.photo-item {
    border-radius: 16px;
    background: #fff;
    border: 1px solid var(--glass-border);
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
}

.img-container {
    width: 100%;
    height: 280px;
    overflow: hidden;
}

.img-container img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 1s ease;
}
.img-container:hover img { transform: scale(1.08); }

.caption {
    padding: 1.2rem;
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--text-main);
    font-weight: 400;
}

/* Custom Marker */
.custom-marker {
    background: #fff;
    border-radius: 50%;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 15px rgba(0,0,0,0.15);
    border: 2px solid #fff;
    transition: var(--transition-smooth);
    cursor: pointer;
}
.custom-marker i { color: var(--text-muted); font-size: 14px; }
.custom-marker:hover {
    transform: scale(1.15) translateY(-5px);
    box-shadow: 0 10px 20px rgba(37, 99, 235, 0.3);
    border-color: var(--primary-color);
}
.custom-marker.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
}
.custom-marker.active i { color: white; }

/* Map Clustering Override */
.custom-cluster {
    background-color: var(--primary-color);
    width: 40px;
    height: 40px;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 50%;
    border: 3px solid rgba(255,255,255,0.8);
    box-shadow: 0 0 15px var(--primary-glow);
    transition: transform 0.3s ease;
}
.custom-cluster:hover {
    transform: scale(1.1);
}
.cluster-icon {
    color: white;
    font-weight: 700;
    font-size: 1.1rem;
}

/* Drawer Overlay / Backdrop */
.drawer-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: 5;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s ease;
    pointer-events: none;
}
.drawer-overlay.active {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

/* Mobile Toggle Button */
.mobile-toggle-btn {
    display: none;
    position: absolute;
    top: 1.5rem;
    left: 1.5rem;
    z-index: 1100;
    padding: 0.8rem 1.4rem;
    font-size: 1rem;
    font-weight: 600;
    font-family: inherit;
    color: var(--text-main);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 30px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    cursor: pointer;
    align-items: center;
    gap: 0.6rem;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.mobile-toggle-btn .btn-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.4s ease;
}

.mobile-toggle-btn.active {
    background: var(--primary-color);
    color: white;
    box-shadow: 0 4px 20px var(--primary-glow);
    border-color: var(--primary-color);
}

.mobile-toggle-btn.active .btn-icon {
    transform: rotate(90deg);
}

/* Responsive adjustments */
@media (max-width: 1024px) {
    /* Tablet & Mobile Layout: App Drawer / Off-Canvas */
    .mobile-toggle-btn {
        display: flex;
    }

    .ui-overlay {
        padding: 0;
        pointer-events: none;
    }
    
    .dashboard-panel {
        position: absolute;
        top: 0;
        left: 0;
        width: 380px;
        max-width: 85vw;
        height: 100vh;
        z-index: 2000;
        border-radius: 0 20px 20px 0;
        transform: translateX(-110%);
        transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
        padding: 5.5rem 1.5rem 2rem 1.5rem;
        pointer-events: auto;
        box-shadow: 15px 0 50px rgba(0, 0, 0, 0.25);
    }
    
    .dashboard-panel.open {
        transform: translateX(0);
    }

    /* Detail Panel trượt từ dưới lên */
    .detail-panel {
        position: absolute;
        bottom: 0;
        left: 0;
        width: 100%;
        height: 80vh;
        border-radius: 30px 30px 0 0;
        transform: translateY(0);
        z-index: 2100;
        box-shadow: 0 -15px 50px rgba(0, 0, 0, 0.2);
        transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
        pointer-events: auto;
    }
    
    .detail-panel.hidden {
        transform: translateY(110%);
    }

    .leaflet-control-zoom {
        margin-top: 5.5rem !important;
    }
}

@media (max-width: 480px) {
    /* Phones specifically */
    .dashboard-panel {
        width: 90vw;
    }
    .detail-panel {
        height: 85vh; /* Larger bottom sheet for photos */
    }
    .tag-btn {
        padding: 0.4rem 0.8rem;
        font-size: 0.8rem;
    }
}