:root {
    --primary-color: #0066cc;
    --bg-color: #f5f7fa;
    --text-color: #333;
    --border-color: #e0e0e0;
}

body {
    font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--bg-color);
    color: var(--text-color);
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

header {
    text-align: center;
    margin-bottom: 30px;
}

h1 {
    color: var(--primary-color);
    margin-bottom: 10px;
}

.search-box {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

input {
    flex: 1;
    padding: 12px;
    font-size: 16px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    outline: none;
}

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

button {
    padding: 12px 24px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    cursor: pointer;
    transition: background 0.2s;
}

button:hover {
    background-color: #0055aa;
}

.hidden {
    display: none;
}

#loading, #error {
    text-align: center;
    margin: 20px 0;
    color: #666;
}

#error {
    color: #d9534f;
}

/* ... existing styles ... */

.results-container {
    position: relative; 
}

/* Hide list when detail is shown (handled by JS adding .hidden class) */
.result-list.hidden {
    display: none;
}

.result-list {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: white;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    max-height: 60vh;
    overflow-y: auto;
    border: 1px solid var(--border-color);
}

.result-list-item {
    background: white;
    padding: 12px 15px;
    margin-bottom: 0;
    border-bottom: 1px solid #f0f0f0;
    cursor: pointer;
    transition: all 0.2s;
    border-left: 4px solid transparent;
}

.result-list-item:last-child {
    border-bottom: none;
}

.result-list-item:hover {
    background-color: #f0f7ff;
    border-left-color: var(--primary-color);
}

.item-name-cn {
    font-weight: bold;
    color: #333;
    font-size: 1em;
}

.item-name-en {
    color: #666;
    font-size: 0.85em;
    margin-top: 2px;
}

.result-detail.hidden {
    display: none;
}

/* Detail Card Styles */
.result-card {
    background: white;
    border-radius: 8px;
    padding: 25px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    position: relative;
    animation: fadeIn 0.3s ease;
    margin-top: 10px;
}

.back-btn {
   display: none;
}

.result-header {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
    margin-bottom: 15px;
}

.result-header h2 {
    margin: 0;
    color: var(--primary-color);
    font-size: 1.5em;
}

.result-header .subtitle {
    color: #666;
    font-style: italic;
    margin-top: 5px;
}

.info-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 10px;
}

@media (max-width: 600px) {
    .container {
        padding: 10px;
    }

    h1 {
        font-size: 1.5em;
    }

    .search-box {
        padding: 10px;
        flex-wrap: wrap; /* Allow wrapping if needed */
    }

    input {
        padding: 10px;
        font-size: 16px; /* Prevent zoom on iOS */
        flex: 1 1 auto; /* Allow grow and shrink */
        min-width: 0; /* Fix flex overflow */
    }

    button {
        padding: 10px 16px;
        font-size: 16px;
        flex: 0 0 auto; /* Don't shrink */
    }

    .result-list {
        max-height: 50vh; /* More space for keyboard on mobile */
    }

    .result-card {
        padding: 15px;
    }

    .result-header h2 {
        font-size: 1.3em;
    }

    .info-grid {
        grid-template-columns: 1fr; /* Force single column */
        gap: 8px;
    }

    .label {
        display: block; /* Stack label and value for better readability */
        margin-bottom: 2px;
    }
    
    .result-list-item {
        padding: 15px; /* Larger touch target */
    }
}

.info-item {
    margin-bottom: 8px;
    word-break: break-word; /* Prevent overflow */
}

.info-item.full-width {
    grid-column: 1 / -1;
}

.label {
    font-weight: bold;
    color: #555;
    margin-right: 5px;
}

.value {
    color: #333;
}

.req-list {
    margin: 5px 0 0 0;
    padding-left: 20px;
    font-size: 0.9em;
    color: #555;
}

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

.close-detail-btn {
    display: block;
    width: 100%;
    margin-top: 20px;
    background-color: #6c757d;
}

.close-detail-btn:hover {
    background-color: #5a6268;
}

@media (min-width: 768px) {
    .close-detail-btn {
        display: none; /* Hide on desktop as selection is enough */
    }
}