:root {
    --primary-color: #4285F4;
    --primary-hover: #3367D6;
    --bg-color: #f8f9fa;
    --text-primary: #202124;
    --text-secondary: #5f6368;
    --border-color: #dadce0;
    --panel-bg: rgba(255, 255, 255, 0.95);
    --shadow-soft: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-medium: 0 8px 32px rgba(0, 0, 0, 0.12);
    --radius-lg: 16px;
    --radius-md: 8px;
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

body {
    font-family: 'Noto Sans TC', sans-serif;
    color: var(--text-primary);
    background-color: var(--bg-color);
    overflow: hidden;
    -webkit-font-smoothing: antialiased;
}

.app-container {
    display: flex;
    height: 100vh;
    width: 100vw;
}

/* Sidebar Styling */
.sidebar {
    width: 380px;
    background: var(--panel-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: var(--shadow-medium);
    display: flex;
    flex-direction: column;
    z-index: 1000;
    border-right: 1px solid rgba(255, 255, 255, 0.5);
    overflow-y: auto;
}

.sidebar-header {
    padding: 24px;
    background: #ffffff;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-header h1 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 8px;
    color: #1a73e8;
}

.sidebar-header p {
    font-size: 14px;
    color: var(--text-secondary);
}

.search-container {
    display: flex;
    margin-top: 16px;
    gap: 8px;
}

.search-container input {
    flex: 1;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 13px;
    outline: none;
    transition: var(--transition);
}

.search-container input:focus {
    border-color: var(--primary-color);
}

.btn-search {
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    padding: 0 12px;
    cursor: pointer;
    transition: var(--transition);
}

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

/* Form Styling */
.form-container {
    padding: 24px;
    background: #ffffff;
    border-bottom: 1px solid var(--border-color);
    animation: slideDown 0.3s ease-out;
}

.form-container h3 {
    margin-bottom: 16px;
    font-size: 18px;
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 14px;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(66, 133, 244, 0.2);
}

.star-rating {
    display: flex;
    gap: 4px;
    font-size: 28px;
    cursor: pointer;
    color: var(--border-color);
    user-select: none;
}

.star-rating .star {
    transition: color 0.2s;
}

.star-rating .star.active, .star-rating .star:hover {
    color: #FFD700;
}

.rating-display {
    color: #FFD700;
    font-size: 14px;
    letter-spacing: 2px;
    margin: 4px 0;
}

.form-actions {
    display: flex;
    gap: 12px;
    margin-top: 20px;
}

.btn {
    flex: 1;
    padding: 10px 16px;
    border: none;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

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

.btn-primary:hover {
    background-color: var(--primary-hover);
    box-shadow: 0 2px 6px rgba(66, 133, 244, 0.4);
}

.btn-secondary {
    background-color: #f1f3f4;
    color: var(--text-primary);
}

.btn-secondary:hover {
    background-color: #e8eaed;
}

/* Restaurant List Styling */
.restaurant-list-container {
    padding: 24px;
    flex: 1;
}

.list-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.list-header h3 {
    margin-bottom: 0;
    font-size: 16px;
    color: var(--text-secondary);
}

.filter-select {
    padding: 6px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 13px;
    outline: none;
    cursor: pointer;
    background-color: white;
}

.filter-select:focus {
    border-color: var(--primary-color);
}

.restaurant-list {
    list-style: none;
}

.restaurant-item {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 16px;
    margin-bottom: 12px;
    cursor: pointer;
    transition: var(--transition);
}

.restaurant-item:hover {
    box-shadow: var(--shadow-soft);
    border-color: #d2e3fc;
    transform: translateY(-2px);
}

.restaurant-item h4 {
    font-size: 16px;
    margin-bottom: 4px;
    color: var(--text-primary);
}

.restaurant-item .street {
    font-size: 12px;
    color: #1a73e8;
    background: #e8f0fe;
    padding: 2px 8px;
    border-radius: 12px;
    display: inline-block;
    margin-bottom: 8px;
}

.restaurant-item .review {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.restaurant-item .item-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--border-color);
}

.restaurant-item .annotator {
    font-size: 12px;
    color: var(--text-secondary);
    font-style: italic;
}

.btn-delete {
    background: none;
    border: none;
    color: #ea4335;
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    padding: 4px 8px;
    border-radius: 4px;
    transition: var(--transition);
}

.btn-delete:hover {
    background-color: #fce8e6;
}

.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-secondary);
    font-size: 14px;
}

/* Map Wrapper */
.map-wrapper {
    flex: 1;
    position: relative;
}

#map {
    height: 100%;
    width: 100%;
    z-index: 1;
}

/* Leaflet Popup Customization */
.leaflet-popup-content-wrapper {
    border-radius: var(--radius-lg) !important;
    box-shadow: var(--shadow-medium) !important;
}

.leaflet-popup-content {
    margin: 16px !important;
    font-family: 'Noto Sans TC', sans-serif;
}

.custom-div-icon {
    background: transparent;
    border: none;
}

.annotator-badge {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    margin-right: 6px;
}

.custom-popup h3 {
    margin: 0 0 8px 0;
    font-size: 16px;
    color: var(--text-primary);
}

.custom-popup p.street {
    margin: 0 0 8px 0;
    font-size: 12px;
    color: #1a73e8;
}

.custom-popup p.review {
    margin: 0;
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.4;
}

.custom-popup p.annotator {
    margin: 8px 0 0 0;
    font-size: 11px;
    color: #9aa0a6;
    font-style: italic;
    border-top: 1px solid var(--border-color);
    padding-top: 8px;
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Responsive */
@media (max-width: 768px) {
    .app-container {
        flex-direction: column-reverse;
    }
    
    .sidebar {
        width: 100%;
        height: 40vh;
        border-right: none;
        border-top: 1px solid var(--border-color);
        border-radius: 20px 20px 0 0;
    }
    
    .map-wrapper {
        height: 60vh;
    }
}