:root {
    --primary: #4F46E5;
    --primary-light: #818CF8;
    --primary-dark: #3730A3;
    --success: #10B981;
    --danger: #EF4444;
    --warning: #F59E0B;
    --bg: #F8FAFC;
    --surface: #FFFFFF;
    --text: #1E293B;
    --text-secondary: #64748B;
    --border: #E2E8F0;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --radius: 12px;
    --radius-sm: 8px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: var(--text);
    background-color: var(--bg);
    min-height: 100vh;
}

.container {
    max-width: 640px;
    margin: 0 auto;
    padding: 20px 16px;
}

header {
    text-align: center;
    padding: 32px 0 24px;
}

header h1 {
    color: var(--primary);
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 8px;
    letter-spacing: -0.5px;
}

header p {
    color: var(--text-secondary);
    font-size: 14px;
    max-width: 400px;
    margin: 0 auto;
}

main {
    padding-bottom: 32px;
}

.search-section {
    background-color: var(--surface);
    padding: 24px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    margin-bottom: 24px;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text);
    font-size: 14px;
}

.form-group input[type="text"] {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 16px;
    transition: all 0.2s ease;
    background-color: var(--bg);
}

.form-group input[type="text"]:focus {
    outline: none;
    border-color: var(--primary);
    background-color: var(--surface);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.form-group input::placeholder {
    color: var(--text-secondary);
}

.form-group input[type="url"],
.form-group input[type="password"] {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 16px;
    transition: all 0.2s ease;
    background-color: var(--bg);
}

.form-group input[type="url"]:focus,
.form-group input[type="password"]:focus {
    outline: none;
    border-color: var(--primary);
    background-color: var(--surface);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.form-group .hint {
    font-weight: normal;
    color: var(--text-secondary);
    font-size: 12px;
}

.auth-section, .config-section {
    background-color: var(--surface);
    padding: 24px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    margin-bottom: 24px;
}

.divider {
    border: none;
    border-top: 1px solid var(--border);
    margin: 24px 0;
}

.btn-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.btn-outline {
    background-color: transparent;
    color: var(--text-secondary);
    border: 2px solid var(--border);
}

.btn-outline:hover {
    background-color: var(--border);
    color: var(--text);
}

.btn {
    color: var(--text-secondary);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 24px;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    transition: all 0.2s ease;
    width: 100%;
}

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

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background-color: var(--border);
    color: var(--text);
}

.btn-secondary:hover {
    background-color: #CBD5E1;
}

/* Danger button */
.btn-danger {
    background-color: var(--danger);
    color: white;
}

.btn-danger:hover {
    background-color: #DC2626;
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

/* Cache section styles */
.cache-section {
    background-color: var(--surface);
    padding: 24px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    margin-bottom: 24px;
}

.warning-box {
    background: linear-gradient(135deg, #FEF2F2, #FEF7F7);
    border: 1px solid #FECACA;
    border-radius: var(--radius-sm);
    padding: 20px;
    margin-bottom: 24px;
}

.warning-box h3 {
    color: var(--danger);
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 12px;
}

.warning-box p {
    color: var(--text);
    font-size: 14px;
    margin-bottom: 12px;
}

.warning-box ul {
    margin: 12px 0;
    padding-left: 20px;
    color: var(--text-secondary);
    font-size: 14px;
}

.warning-box li {
    margin-bottom: 6px;
}

#loading {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-secondary);
    font-size: 15px;
}

#loading::before {
    content: '';
    display: inline-block;
    width: 24px;
    height: 24px;
    border: 3px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-right: 8px;
    vertical-align: middle;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.result-section, .error-section {
    background-color: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.result-section h2, .error-section h2 {
    font-size: 16px;
    font-weight: 600;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
    background-color: var(--bg);
}

.result-section h2 {
    color: var(--success);
}

.error-section h2 {
    color: var(--danger);
}

.result-item {
    padding: 20px;
}

.food-name {
    color: var(--text);
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--primary-light);
    font-size: 18px;
    font-weight: 700;
}

.markdown-body {
    line-height: 1.8;
    color: var(--text);
    font-size: 15px;
}

.markdown-body strong {
    color: var(--primary-dark);
    font-weight: 600;
}

.markdown-body p {
    margin-bottom: 16px;
}

.markdown-body ul, .markdown-body ol {
    padding-left: 24px;
    margin-bottom: 16px;
}

.markdown-body li {
    margin-bottom: 8px;
    line-height: 1.7;
}

.markdown-body li strong {
    color: var(--text);
}

.markdown-body code {
    background: linear-gradient(135deg, #F1F5F9, #E2E8F0);
    padding: 2px 8px;
    border-radius: 6px;
    font-size: 0.875em;
    font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
    color: var(--primary-dark);
    border: 1px solid rgba(79, 70, 229, 0.1);
}

.markdown-body blockquote {
    border-left: 4px solid var(--primary);
    padding: 14px 18px;
    margin: 16px 0;
    background: linear-gradient(135deg, #F8FAFC, #EEF2FF);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    color: var(--text-secondary);
}

.markdown-body em {
    color: var(--text-secondary);
    font-style: normal;
    background-color: rgba(79, 70, 229, 0.06);
    padding: 2px 6px;
    border-radius: 4px;
}

/* 表格样式 */
.markdown-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    background-color: var(--surface);
    border-radius: var(--radius-sm);
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
    font-size: 14px;
}

.markdown-body thead {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
}

.markdown-body th {
    padding: 14px 16px;
    text-align: left;
    font-weight: 600;
    border: none;
    letter-spacing: 0.3px;
}

.markdown-body td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    vertical-align: top;
}

.markdown-body tbody tr:hover {
    background-color: #F8FAFC;
    transition: background-color 0.15s ease;
}

.markdown-body tbody tr:last-child td {
    border-bottom: none;
}

/* GI值高亮 */
.markdown-body td:nth-child(2) {
    font-weight: 600;
    color: var(--primary);
}

@media (max-width: 480px) {
    .markdown-body table {
        font-size: 13px;
        display: block;
        overflow-x: auto;
        white-space: nowrap;
        -webkit-overflow-scrolling: touch;
    }
    
    .markdown-body th,
    .markdown-body td {
        padding: 10px 12px;
    }
}

#errorSection .error-content {
    padding: 20px;
    color: var(--text-secondary);
    font-size: 14px;
}

.alert {
    padding: 14px 16px;
    margin-bottom: 20px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
}

.alert-success {
    background-color: #ECFDF5;
    color: #065F46;
    border: 1px solid #A7F3D0;
}

.alert-error {
    background-color: #FEF2F2;
    color: #991B1B;
    border: 1px solid #FECACA;
}

.hidden {
    display: none;
}

@media (max-width: 480px) {
    .container {
        padding: 16px 12px;
    }
    
    header {
        padding: 24px 0 20px;
    }
    
    header h1 {
        font-size: 24px;
    }
    
    header p {
        font-size: 13px;
    }
    
    .search-section, .auth-section, .config-section {
        padding: 20px 16px;
    }
    
    .form-group input[type="text"],
    .form-group input[type="url"],
    .form-group input[type="password"] {
        padding: 12px 14px;
        font-size: 16px;
    }
    
    .btn {
        padding: 12px 20px;
        font-size: 15px;
    }
    
    .result-item {
        padding: 16px;
    }
    
    .food-name {
        font-size: 16px;
    }
    
    .markdown-body {
        font-size: 14px;
    }
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #0F172A;
        --surface: #1E293B;
        --text: #F1F5F9;
        --text-secondary: #94A3B8;
        --border: #334155;
        --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
        --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -4px rgba(0, 0, 0, 0.3);
    }
    
    .form-group input[type="text"] {
        color: var(--text);
    }
    
    .markdown-body code {
        background-color: #0F172A;
    }
    
    .markdown-body blockquote {
        background-color: #1E293B;
    }
    
    .alert-success {
        background-color: #052E16;
        border-color: #064E3B;
    }
    
    .alert-error {
        background-color: #450A0A;
        border-color: #7F1D1D;
    }
    
    .btn-outline {
        border-color: var(--border);
    }
    
    .btn-outline:hover {
        background-color: var(--border);
    }
}