/* ===== CSS 变量 ===== */
:root {
    /* 颜色系统 */
    --primary: #667eea;
    --primary-dark: #5568d3;
    --success: #10b981;
    --error: #ef4444;
    --warning: #f59e0b;
    
    /* 背景 */
    --bg-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --card-bg: #ffffff;
    
    /* 文字 */
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    
    /* 间距 */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    
    /* 圆角 */
    --border-radius: 16px;
    --radius-sm: 8px;
    --radius-md: 12px;
    
    /* 阴影 */
    --shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.15);
    
    /* 动画 */
    --transition: all 0.3s ease;
}

/* ===== 基础重置 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
    background: var(--bg-gradient);
    min-height: 100vh;
    padding: 20px 16px 80px;
    color: var(--text-primary);
    -webkit-font-smoothing: antialiased;
}

/* ===== 容器 ===== */
.container {
    max-width: 600px;
    margin: 0 auto;
}

/* ===== 头部 ===== */
.header {
    text-align: center;
    margin-bottom: 24px;
}

.header h1 {
    color: white;
    font-size: 1.75rem;
    font-weight: 700;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.header p {
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.95rem;
    margin-top: 8px;
}

/* ===== 卡片 ===== */
.card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 24px 20px;
    margin-bottom: 16px;
    box-shadow: var(--shadow);
}

.card h2 {
    color: var(--text-primary);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* ===== 表单 ===== */
.form-group {
    margin-bottom: 12px;
}

textarea, input {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid #e5e7eb;
    border-radius: 12px;
    font-size: 16px;
    font-family: inherit;
    transition: var(--transition);
    -webkit-appearance: none;
    appearance: none;
    background: #f9fafb;
    resize: vertical;
    min-height: 100px;
}

textarea:focus, input:focus {
    outline: none;
    border-color: var(--primary);
    background: white;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

input::placeholder {
    color: #9ca3af;
}

/* ===== 按钮 ===== */
button {
    width: 100%;
    background: var(--primary);
    color: white;
    border: none;
    padding: 14px 24px;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

button:active {
    transform: scale(0.97);
}

button:hover {
    background: var(--primary-dark);
}

button:disabled {
    background: #9ca3af;
    cursor: not-allowed;
    transform: none;
}

/* ===== 结果区域 ===== */
.result {
    margin-top: 16px;
    padding: 16px;
    border-radius: 12px;
    display: none;
    font-size: 14px;
    line-height: 1.5;
}

.result.show {
    display: block;
    animation: fadeIn 0.3s ease;
}

.result.success {
    background: #d1fae5;
    color: #065f46;
    border-left: 4px solid var(--success);
}

.result.error {
    background: #fee2e2;
    color: #991b1b;
    border-left: 4px solid var(--error);
}

.result.warning {
    background: #fef3c7;
    color: #92400e;
    border-left: 4px solid var(--warning);
}

/* ===== 报告列表 ===== */
.reports-list {
    max-height: 400px;
    overflow-y: auto;
}

.report-item {
    padding: 16px;
    border: 1px solid #e5e7eb;
    border-radius: 12px;
    margin-bottom: 12px;
    cursor: pointer;
    transition: var(--transition);
}

.report-item:hover {
    border-color: var(--primary);
    background: #f8fafc;
}

.report-item .query {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.report-item .meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
}

.report-item .time {
    font-size: 12px;
    color: var(--text-secondary);
}

.report-item .ai-model {
    font-size: 12px;
    color: var(--primary);
    background: #e8f0fe;
    padding: 2px 8px;
    border-radius: 10px;
}

.report-item .tags {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
}

.report-item .tag {
    font-size: 11px;
    padding: 2px 8px;
    background: #e8f0fe;
    color: #1a73e8;
    border-radius: 10px;
}

.report-item .url {
    font-size: 12px;
    color: #1a73e8;
    margin-top: 8px;
    display: block;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

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

.loading {
    text-align: center;
    padding: 20px;
    color: var(--text-secondary);
}

/* ===== 报告查看器 ===== */
.report-viewer {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.report-viewer .card {
    width: 100%;
    max-width: 900px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    padding: 0;
}

.viewer-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid #e5e7eb;
}

.viewer-header h2 {
    margin: 0;
}

.close-btn {
    width: auto;
    background: #f3f4f6;
    color: #374151;
    padding: 8px 16px;
    font-size: 14px;
    box-shadow: none;
}

#reportFrame {
    flex: 1;
    width: 100%;
    min-height: 60vh;
    border: none;
}

/* ===== 底部信息 ===== */
.footer {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(10px);
    padding: 12px 20px;
    z-index: 100;
}

.footer-content {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
    color: rgba(255, 255, 255, 0.9);
    font-size: 13px;
}

.footer-content p {
    margin: 4px 0;
}

.footer-content a {
    color: white;
    text-decoration: underline;
}

/* ===== 动画 ===== */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ===== 移动端优化 ===== */
@media screen and (max-width: 480px) {
    body { padding: 16px 12px 90px; }
    .header h1 { font-size: 1.5rem; }
    .card { padding: 20px 16px; }
    input { font-size: 17px; padding: 16px; }
    button { font-size: 17px; padding: 16px; }
}

/* ===== 安全区域 ===== */
@supports (padding-bottom: env(safe-area-inset-bottom)) {
    body { padding-bottom: calc(20px + env(safe-area-inset-bottom)); }
    .footer { padding-bottom: calc(12px + env(safe-area-inset-bottom)); }
}
/* ===== 股票分析卡片 ===== */
.stock-card {
    background: linear-gradient(135deg, #1e3a5f 0%, #2d5a87 100%);
    color: white;
    padding: 20px;
}

.stock-card h2 {
    color: white;
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.stock-intro {
    color: rgba(255,255,255,0.85);
    font-size: 13px;
    margin-bottom: 12px;
    display: none; /* 移动端隐藏详细股票列表 */
}

.stock-buttons {
    display: flex;
    gap: 10px;
    margin-bottom: 12px;
}

.stock-buttons button {
    flex: 1;
    background: rgba(255,255,255,0.2);
    color: white;
    border: 1px solid rgba(255,255,255,0.3);
    padding: 12px 16px;
    font-size: 14px;
}

.stock-buttons button:hover {
    background: rgba(255,255,255,0.3);
}

.stock-latest {
    background: rgba(255,255,255,0.1);
    padding: 12px;
    border-radius: 8px;
    margin-top: 12px;
    font-size: 13px;
}

.stock-latest p {
    margin: 6px 0;
}

.stock-latest a {
    color: #4fc3f7;
    text-decoration: none;
    font-size: 14px;
}

/* ===== 股票数据表格 ===== */
.stock-data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

.stock-data-table th,
.stock-data-table td {
    padding: 10px 8px;
    text-align: left;
    border-bottom: 1px solid #e0e0e0;
}

.stock-data-table th {
    background: #f5f5f5;
    font-weight: 600;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stock-data-table .stock-up {
    color: #10b981;
    font-weight: 600;
}

.stock-data-table .stock-down {
    color: #ef4444;
    font-weight: 600;
}

.stock-data-table .stock-symbol {
    font-weight: 600;
    font-size: 14px;
}

.stock-data-table .stock-name {
    font-size: 11px;
    color: #888;
    margin-top: 2px;
}

/* 移动端股票表格横向滚动 */
.stock-table-wrapper {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin: 0 -16px;
    padding: 0 16px;
}

.stock-table-wrapper .stock-data-table {
    min-width: 500px;
}

/* ===== 移动端优化 ===== */
@media screen and (max-width: 480px) {
    body { padding: 16px 12px 90px; }
    .header h1 { font-size: 1.4rem; }
    .card { padding: 20px 16px; }
    
    /* 股票卡片移动端优化 */
    .stock-card {
        padding: 16px;
    }
    
    .stock-card h2 {
        font-size: 1rem;
    }
    
    .stock-intro {
        display: none;
    }
    
    .stock-buttons {
        flex-direction: column;
        gap: 8px;
    }
    
    .stock-buttons button {
        padding: 14px;
        font-size: 15px;
    }
    
    .stock-latest {
        padding: 10px;
        font-size: 12px;
    }
    
    .stock-latest a {
        font-size: 13px;
    }
    
    /* 股票数据表格移动端 */
    .stock-data-table {
        font-size: 12px;
    }
    .stock-data-table th,
    .stock-data-table td {
        padding: 8px 4px;
    }
    .stock-data-table .stock-symbol {
        font-size: 13px;
    }
    .stock-data-table .stock-name {
        font-size: 10px;
    }
}