:root {
    /* Colors */
    --primary-color: #3b82f6; /* Modern Blue */
    --primary-hover: #2563eb;
    --bg-main: #f8fafc;
    --bg-surface: #ffffff;
    --text-main: #0f172a;
    --text-muted: #64748b;
    --border-color: rgba(226, 232, 240, 0.6);
    
    /* Semantic Colors for Timeline */
    --color-food: #f59e0b; /* Amber */
    --color-hotel: #8b5cf6; /* Purple */
    --color-attraction: #10b981; /* Emerald */
    --color-transit: #0ea5e9; /* Sky Blue */
    --color-shopping: #ec4899; /* Pink */
    
    /* Route Line Colors */
    --route-walk: #10b981;
    --route-train: #3b82f6;
    --route-bus: #f59e0b;
    
    /* Typography */
    --font-family: 'Inter', 'Noto Sans SC', sans-serif;
    
    /* Shadows */
    --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-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-glass: 0 8px 32px rgba(0, 0, 0, 0.05);
    
    /* Layout Variables */
    --header-height: 64px;
    --sidebar-left-width: 320px;
    --sidebar-right-width: 380px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

body {
    font-family: var(--font-family);
    background-color: var(--bg-main);
    color: var(--text-main);
    overflow: hidden; /* Prevent body scroll */
    -webkit-tap-highlight-color: transparent;
}

/* Custom Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background-color: rgba(148, 163, 184, 0.5); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background-color: rgba(100, 116, 139, 0.8); }

/* --- Full Screen Map --- */
.map-fullscreen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 1;
}

/* --- UI Overlay Layer --- */
.ui-layer {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10;
    pointer-events: none; /* Let clicks pass through to map */
    display: flex;
    flex-direction: column;
}

.app-header, .sidebar, .fab, .mobile-mask {
    pointer-events: auto; /* Enable clicks on interactive components only */
}

/* Glassmorphism Panel Utility */
.glass-panel {
    background-color: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

/* --- Header --- */
.app-header {
    height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-glass);
    flex-shrink: 0;
    z-index: 20;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--primary-color);
}

.logo-area h1 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-main);
    letter-spacing: -0.5px;
}

.logo-area i {
    font-size: 1.4rem;
}

.modern-select {
    padding: 8px 16px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: rgba(255, 255, 255, 0.7);
    font-family: inherit;
    font-size: 0.95rem;
    color: var(--text-main);
    cursor: pointer;
    outline: none;
    transition: var(--transition-fast);
}

.modern-select:hover, .modern-select:focus {
    border-color: var(--primary-color);
    background-color: #fff;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

/* --- Main Content Wrapper --- */
.content-wrapper {
    flex: 1;
    position: relative;
    width: 100%;
}

/* --- Sidebars (Desktop Floating Style) --- */
.sidebar {
    position: absolute;
    top: 20px;
    bottom: 20px;
    display: flex;
    flex-direction: column;
    border-radius: 16px;
    box-shadow: var(--shadow-glass), var(--shadow-lg);
    overflow: hidden;
    transition: var(--transition-smooth);
}

.sidebar-left {
    left: 20px;
    width: var(--sidebar-left-width);
}

.sidebar-right {
    right: 20px;
    width: var(--sidebar-right-width);
}

/* Sidebar Headers */
.sidebar-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
    background-color: rgba(255, 255, 255, 0.5);
    display: flex;
    flex-direction: column;
    position: relative;
}

.sidebar-header h2 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.sidebar-header p {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.close-btn {
    position: absolute;
    top: 16px;
    right: 16px;
    background: rgba(0,0,0,0.05);
    border: none;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    transition: var(--transition-fast);
}

.close-btn:hover {
    background: rgba(0,0,0,0.1);
    color: var(--text-main);
}

/* Lists Containers */
.days-list, .places-list {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* --- Day Card --- */
.day-card {
    background-color: rgba(255,255,255,0.6);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 16px;
    cursor: pointer;
    transition: var(--transition-fast);
    display: flex;
    flex-direction: column;
}

.day-card:hover {
    border-color: var(--primary-color);
    background-color: #fff;
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.day-card.active {
    border-color: var(--primary-color);
    background-color: rgba(239, 246, 255, 0.8); /* Light blue glass */
    box-shadow: 0 0 0 1px var(--primary-color), var(--shadow-sm);
}

.day-card-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 6px;
    gap: 8px;
}

.day-date {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--primary-color);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    flex-shrink: 0;
}

.day-title {
    font-size: 1rem;
    font-weight: 600;
}

.day-summary {
    font-size: 0.8rem;
    color: var(--text-muted);
    line-height: 1.4;
    margin-bottom: 12px;
}

/* Segments List inside Day Card */
.segments-list {
    display: none;
    flex-direction: column;
    gap: 8px;
    margin-top: 12px;
    border-top: 1px dashed var(--border-color);
    padding-top: 12px;
}

.day-card.active .segments-list {
    display: flex;
    animation: fadeIn 0.3s ease;
}

.segment-item {
    font-size: 0.8rem;
    padding: 8px 10px;
    background-color: rgba(255,255,255,0.5);
    border-radius: 8px;
    transition: var(--transition-fast);
    border: 1px solid transparent;
    display: flex;
    align-items: flex-start;
    gap: 8px;
    text-align: left;
}

.segment-item:hover {
    background-color: #fff;
    border-color: rgba(0,0,0,0.05);
}

.segment-item.active {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.segment-time {
    font-weight: 600;
    opacity: 0.9;
    flex-shrink: 0;
}

.segment-title {
    flex: 1;
    word-break: break-word;
}

/* --- Right Sidebar Overview --- */
.overview-title {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.overview-desc {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.5;
    margin-bottom: 16px;
}

.stats-container {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    background-color: rgba(255,255,255,0.6);
    padding: 6px 10px;
    border-radius: 6px;
    font-weight: 500;
    border: 1px solid var(--border-color);
}

.stat-item i {
    color: var(--primary-color);
}

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 30px 10px;
    text-align: center;
    color: var(--text-muted);
}
.empty-state i {
    font-size: 2.5rem;
    margin-bottom: 12px;
    color: rgba(203, 213, 225, 0.8);
}

/* --- Timeline Layout for Places --- */
.timeline-container {
    position: relative;
    padding-left: 28px !important; /* Space for the line */
    padding-top: 24px;
    padding-bottom: 24px;
}

.timeline-container::before {
    content: '';
    position: absolute;
    top: 24px;
    bottom: 24px;
    left: 14px;
    width: 2px;
    background: linear-gradient(to bottom, transparent, var(--border-color) 5%, var(--border-color) 95%, transparent);
}

.place-card-wrapper {
    position: relative;
    margin-bottom: 16px;
}

.place-card-wrapper:last-child {
    margin-bottom: 0;
}

/* Timeline Dot */
.timeline-dot {
    position: absolute;
    left: -28px;
    top: 18px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background-color: var(--bg-surface);
    border: 3px solid var(--primary-color);
    box-shadow: 0 0 0 4px var(--bg-main);
    z-index: 2;
    transition: transform var(--transition-fast);
}

.place-card-wrapper:hover .timeline-dot {
    transform: scale(1.3);
}

/* Map Type Colors to Dots */
.type-restaurant .timeline-dot { border-color: var(--color-food); }
.type-hotel .timeline-dot { border-color: var(--color-hotel); }
.type-temple .timeline-dot, .type-park .timeline-dot { border-color: var(--color-attraction); }
.type-station .timeline-dot, .type-airport .timeline-dot { border-color: var(--color-transit); }
.type-mall .timeline-dot, .type-shopping_street .timeline-dot { border-color: var(--color-shopping); }

/* --- Place Card --- */
.place-card {
    background-color: rgba(255,255,255,0.7);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    transition: var(--transition-fast);
}

.place-card:hover {
    background-color: #fff;
    box-shadow: var(--shadow-md);
}

.place-card.highlight {
    border-color: var(--primary-color);
    background-color: #fff;
    box-shadow: 0 0 0 1px var(--primary-color), var(--shadow-md);
}

.place-header-toggle {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: 14px;
    cursor: pointer;
    background-color: transparent;
}

.place-title-area {
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    flex: 1;
    min-width: 0;
    width: 100%;
}

.place-name {
    font-size: 1rem;
    font-weight: 600;
    line-height: 1.3;
    word-break: break-word;
    flex: 1;
    min-width: 120px;
}

.place-type {
    font-size: 0.65rem;
    padding: 3px 8px;
    border-radius: 20px;
    background-color: rgba(0,0,0,0.05);
    color: var(--text-main);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    align-self: center;
    flex-shrink: 0;
}

/* Type Colors */
.type-restaurant .place-type { background-color: rgba(245, 158, 11, 0.15); color: #d97706; }
.type-hotel .place-type { background-color: rgba(139, 92, 246, 0.15); color: #6d28d9; }
.type-temple .place-type, .type-park .place-type { background-color: rgba(16, 185, 129, 0.15); color: #047857; }
.type-station .place-type, .type-airport .place-type { background-color: rgba(14, 165, 233, 0.15); color: #0369a1; }
.type-mall .place-type, .type-shopping_street .place-type { background-color: rgba(236, 72, 153, 0.15); color: #be185d; }

.toggle-icon {
    font-size: 0.9rem;
    color: var(--text-muted);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    margin-top: 4px;
}

.place-card.expanded .toggle-icon {
    transform: rotate(180deg);
}

.place-details {
    padding: 0 14px 14px 14px;
    display: none;
    border-top: 1px dashed var(--border-color);
    margin-top: 4px;
    padding-top: 14px;
}

.place-card.expanded .place-details {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-5px); }
    to { opacity: 1; transform: translateY(0); }
}

.place-image-container {
    width: 100%;
    height: 140px;
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 12px;
    box-shadow: var(--shadow-sm);
}

.place-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}
.place-card:hover .place-image { transform: scale(1.05); }

.place-desc {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.5;
    margin-bottom: 12px;
}

.place-meta {
    display: grid;
    grid-template-columns: 1fr;
    gap: 8px;
    margin-bottom: 12px;
    background: rgba(0,0,0,0.02);
    padding: 10px;
    border-radius: 8px;
}

.meta-item {
    font-size: 0.8rem;
    display: flex;
    align-items: flex-start;
    gap: 8px;
    color: var(--text-main);
}
.meta-item i { margin-top: 3px; color: var(--text-muted); width: 14px; text-align: center; }

.place-notes {
    font-size: 0.8rem;
    background-color: rgba(59, 130, 246, 0.05);
    color: var(--text-main);
    padding: 10px;
    border-radius: 8px;
    border-left: 3px solid var(--primary-color);
    margin-bottom: 12px;
}

.structured-guide { font-size: 0.85rem; }
.structured-guide h4 { font-size: 0.85rem; margin-top: 10px; margin-bottom: 6px; display: flex; align-items: center; gap: 6px; }
.structured-guide h4:first-child { margin-top: 0; }
.structured-guide h4 i { color: var(--primary-color); }
.structured-guide ul { list-style: none; padding: 0; margin-bottom: 10px; }
.structured-guide ul li { color: var(--text-muted); margin-bottom: 4px; padding-left: 12px; position: relative; }
.structured-guide ul li::before { content: "•"; position: absolute; left: 0; color: var(--primary-color); }
.structured-guide ul li strong { color: var(--text-main); }

.btn-locate {
    width: 100%;
    padding: 8px 0;
    background-color: var(--bg-surface);
    border: 1px solid var(--primary-color);
    border-radius: 8px;
    color: var(--primary-color);
    font-weight: 500;
    font-size: 0.85rem;
    cursor: pointer;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

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

/* --- Map Markers --- */
.custom-map-marker {
    background: white;
    border: 2px solid var(--primary-color);
    border-radius: 50%;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.custom-map-marker.highlight-marker {
    background: var(--primary-color);
    color: white;
    transform: scale(1.2);
    box-shadow: 0 0 0 4px rgba(59,130,246,0.3), 0 4px 10px rgba(0,0,0,0.2);
    z-index: 1000 !important;
}

/* --- Mobile Components (Hidden on Desktop) --- */
.mobile-only {
    display: none;
}

/* Floating Action Buttons (FABs) */
.fab-container {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 16px;
    z-index: 20;
    pointer-events: auto;
}

.fab {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 30px;
    border: none;
    font-size: 0.95rem;
    font-weight: 600;
    font-family: inherit;
    box-shadow: 0 4px 15px rgba(0,0,0,0.15);
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.fab:active { transform: scale(0.95); }

.fab-primary { background-color: var(--primary-color); color: white; }
.fab-secondary { background-color: white; color: var(--text-main); border: 1px solid var(--border-color); }

.mobile-mask {
    position: fixed;
    top: 0; left: 0; width: 100vw; height: 100vh;
    background: rgba(0,0,0,0.4);
    z-index: 25; /* Below sidebar (30) */
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease;
    pointer-events: auto;
}

.mobile-mask.active {
    opacity: 1;
    visibility: visible;
}

/* --- Responsive Media Queries (Mobile First approach applied to max-width) --- */
@media (max-width: 768px) {
    .mobile-only {
        display: flex;
    }
    
    .app-header {
        height: 60px;
        padding: 0 16px;
    }
    
    .logo-area h1 {
        font-size: 1rem;
    }
    
    /* Transform sidebars into Bottom Sheets */
    .sidebar {
        position: fixed;
        bottom: 0;
        top: auto;
        left: 0;
        right: 0;
        width: 100%;
        height: 75vh; /* 75% of screen */
        border-radius: 24px 24px 0 0;
        z-index: 30;
        transform: translateY(100%);
        box-shadow: 0 -4px 20px rgba(0,0,0,0.1);
        border: none;
        background-color: var(--bg-surface); /* Solid on mobile for better readability */
        backdrop-filter: none;
        transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    }
    
    /* Active state for bottom sheets */
    .sidebar.active {
        transform: translateY(0);
    }
    
    .sidebar-header {
        padding: 20px;
        border-radius: 24px 24px 0 0;
        background: var(--bg-surface);
    }
    
    /* Add a drag handle indicator */
    .sidebar-header::before {
        content: '';
        position: absolute;
        top: 8px;
        left: 50%;
        transform: translateX(-50%);
        width: 40px;
        height: 4px;
        border-radius: 2px;
        background-color: #cbd5e1;
    }
    
    .fab-container {
        bottom: 30px;
    }
}

/* --- Booking Button & Modal Styles --- */
.modern-btn {
    padding: 8px 16px;
    border: none;
    border-radius: 8px;
    background-color: var(--primary-color);
    color: white;
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition-fast);
    outline: none;
    box-shadow: var(--shadow-sm);
}

.modern-btn:hover {
    background-color: var(--primary-hover);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.controls-area {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* Modal Overlay */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(15, 23, 42, 0.4);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

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

/* Modal Content */
.modal-content {
    width: 90%;
    max-width: 650px;
    max-height: 85vh;
    border-radius: 16px;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transform: scale(0.9);
    transition: transform 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.4);
}

.modal-overlay.active .modal-content {
    transform: scale(1);
}

.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-header h2 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 10px;
}

.close-modal-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-muted);
    cursor: pointer;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
}

.close-modal-btn:hover {
    background-color: rgba(15, 23, 42, 0.05);
    color: var(--text-main);
}

.modal-body {
    padding: 24px;
    overflow-y: auto;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* Booking Cards */
.booking-section-title {
    font-size: 0.95rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 6px;
    margin-bottom: 12px;
}

.booking-grid {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 8px;
}

.booking-card {
    background-color: rgba(255, 255, 255, 0.6);
    border: 1px solid rgba(226, 232, 240, 0.8);
    border-radius: 12px;
    padding: 16px;
    display: flex;
    align-items: flex-start;
    gap: 16px;
    transition: var(--transition-fast);
}

.booking-card:hover {
    border-color: var(--primary-color);
    background-color: #fff;
    box-shadow: var(--shadow-sm);
}

.booking-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.15rem;
    flex-shrink: 0;
}

.booking-icon.hotel {
    background-color: rgba(139, 92, 246, 0.1);
    color: var(--color-hotel);
}

.booking-icon.transit {
    background-color: rgba(14, 165, 233, 0.1);
    color: var(--color-transit);
}

.booking-icon.attraction {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--color-attraction);
}

.booking-info {
    flex: 1;
}

.booking-info h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 4px;
}

.booking-info p {
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.4;
}

.booking-badge {
    padding: 4px 8px;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--color-attraction);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

/* Mobile responsive for modal */
@media (max-width: 768px) {
    .modal-content {
        width: 95%;
        max-height: 90vh;
    }
    
    .booking-card {
        padding: 12px;
        gap: 12px;
    }
    
    .booking-icon {
        width: 36px;
        height: 36px;
        font-size: 1rem;
    }
}