/**
 * style.css
 * A股交易助手 - 全局样式表
 * 
 * 特性：
 * 1. CSS 变量管理主题色（支持暗黑/明亮主题切换）
 * 2. 响应式布局（桌面端 + 移动端适配）
 * 3. 卡片式 UI 设计
 * 4. 动画和过渡效果
 */

/* ========== CSS 变量（主题色） ========== */
:root {
    --bg-primary: #1a1a2e;
    --bg-secondary: #16213e;
    --bg-card: #0f3460;
    --bg-hover: #1a4a7a;
    --text-primary: #e0e0e0;
    --text-secondary: #a0a0b0;
    --text-muted: #707080;
    --border-color: #2d2d44;
    --accent-primary: #e94560;
    --accent-secondary: #0f3460;
    --accent-success: #26a69a;
    --accent-danger: #ef5350;
    --accent-warning: #ff9800;
    --accent-info: #2196f3;
    --up-color: #ef5350;
    --down-color: #26a69a;
    --shadow: 0 4px 12px rgba(0,0,0,0.3);
    --radius: 8px;
    --header-height: 56px;
    --transition: all 0.3s ease;
}

[data-theme="light"] {
    --bg-primary: #f5f5f5;
    --bg-secondary: #ffffff;
    --bg-card: #ffffff;
    --bg-hover: #f0f0f0;
    --text-primary: #333333;
    --text-secondary: #666666;
    --text-muted: #999999;
    --border-color: #e0e0e0;
    --accent-primary: #d32f2f;
    --accent-secondary: #1976d2;
    --shadow: 0 2px 8px rgba(0,0,0,0.1);
    --up-color: #d32f2f;
    --down-color: #388e3c;
}

/* ========== 基础重置 ========== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html, body {
    height: 100%;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
    font-size: 14px;
    line-height: 1.5;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    transition: background-color 0.3s, color 0.3s;
    overflow-x: hidden;
}

/* ========== 顶部导航栏 ========== */
.app-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    z-index: 1000;
    box-shadow: var(--shadow);
}

.header-brand {
    display: flex;
    align-items: center;
    gap: 8px;
}

.brand-icon {
    font-size: 24px;
}

.header-brand h1 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

.header-nav {
    display: flex;
    gap: 4px;
}

.nav-btn {
    padding: 8px 16px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 14px;
    cursor: pointer;
    border-radius: var(--radius);
    transition: var(--transition);
    white-space: nowrap;
}

.nav-btn:hover {
    background-color: var(--bg-hover);
    color: var(--text-primary);
}

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

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.icon-btn {
    width: 36px;
    height: 36px;
    border: none;
    background: transparent;
    font-size: 18px;
    cursor: pointer;
    border-radius: 50%;
    transition: var(--transition);
}

.icon-btn:hover {
    background-color: var(--bg-hover);
}

.market-status {
    font-size: 12px;
    padding: 4px 10px;
    border-radius: 12px;
    background-color: var(--accent-success);
    color: white;
    font-weight: 500;
}

.market-status.closed {
    background-color: var(--text-muted);
}

/* ========== 主内容区 ========== */
.app-main {
    margin-top: var(--header-height);
    padding: 20px;
    min-height: calc(100vh - var(--header-height));
}

/* 页面切换 */
.page {
    display: none;
    animation: fadeIn 0.3s ease;
}

.page.active {
    display: block;
}

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

/* ========== 卡片组件 ========== */
.card {
    background-color: var(--bg-card);
    border-radius: var(--radius);
    padding: 16px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.card:hover {
    box-shadow: 0 6px 16px rgba(0,0,0,0.15);
}

.card-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
    flex-wrap: wrap;
    gap: 8px;
}

/* ========== 按钮 ========== */
.btn {
    padding: 8px 16px;
    border: none;
    border-radius: var(--radius);
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

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

.btn-primary:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

.btn-secondary {
    background-color: var(--bg-hover);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

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

.btn-large {
    padding: 12px 24px;
    font-size: 15px;
}

/* ========== 表格 ========== */
.table-wrapper {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

.data-table th,
.data-table td {
    padding: 10px 12px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
}

.data-table th {
    font-weight: 600;
    color: var(--text-secondary);
    background-color: var(--bg-secondary);
    position: sticky;
    top: 0;
}

.data-table tr:hover {
    background-color: var(--bg-hover);
}

.data-table .up { color: var(--up-color); }
.data-table .down { color: var(--down-color); }

/* ========== 搜索框 ========== */
.search-box {
    display: flex;
    gap: 0;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    overflow: hidden;
    background-color: var(--bg-secondary);
}

.search-box input {
    border: none;
    padding: 8px 12px;
    background: transparent;
    color: var(--text-primary);
    outline: none;
    width: 180px;
    font-size: 13px;
}

.search-box button {
    border: none;
    background: transparent;
    padding: 8px 12px;
    cursor: pointer;
    font-size: 14px;
}

.search-box-large {
    display: flex;
    gap: 0;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    overflow: hidden;
    background-color: var(--bg-secondary);
}

.search-box-large input {
    border: none;
    padding: 12px 16px;
    background: transparent;
    color: var(--text-primary);
    outline: none;
    flex: 1;
    font-size: 14px;
}

.search-box-large button {
    border: none;
    background: var(--accent-primary);
    color: white;
    padding: 12px 20px;
    cursor: pointer;
    font-size: 16px;
}

/* ========== 行情看板布局 ========== */
.dashboard-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
}

.index-overview {
    grid-column: 1 / -1;
}

.index-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 12px;
}

.index-item {
    background-color: var(--bg-secondary);
    border-radius: var(--radius);
    padding: 12px;
    text-align: center;
    border: 1px solid var(--border-color);
}

.index-item .name {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.index-item .price {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 4px;
}

.index-item .change {
    font-size: 13px;
    font-weight: 500;
}

/* 自选股 */
.watchlist-card {
    grid-column: 1 / -1;
}

.watchlist-toolbar {
    display: flex;
    gap: 8px;
    margin-bottom: 12px;
}

/* 今日操作建议 */
.today-signals {
    grid-column: 1 / -1;
}

.signal-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 12px;
    margin-bottom: 16px;
}

.summary-item {
    background-color: var(--bg-secondary);
    border-radius: var(--radius);
    padding: 16px;
    text-align: center;
    border: 1px solid var(--border-color);
}

.summary-item .label {
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.summary-item .value {
    font-size: 24px;
    font-weight: 700;
}

.summary-item .value.buy { color: var(--up-color); }
.summary-item .value.sell { color: var(--down-color); }

.signal-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.signal-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background-color: var(--bg-secondary);
    border-radius: var(--radius);
    border-left: 4px solid var(--border-color);
}

.signal-item.buy { border-left-color: var(--up-color); }
.signal-item.sell { border-left-color: var(--down-color); }
.signal-item.hold { border-left-color: var(--accent-warning); }

.signal-item .badge {
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 10px;
    font-weight: 600;
    color: white;
    white-space: nowrap;
}

.badge.buy { background-color: var(--up-color); }
.badge.sell { background-color: var(--down-color); }
.badge.hold { background-color: var(--accent-warning); }
.badge.strong { box-shadow: 0 0 6px currentColor; }

.signal-item .info {
    flex: 1;
    min-width: 0;
}

.signal-item .info .name {
    font-weight: 600;
    font-size: 14px;
}

.signal-item .info .reasons {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 2px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.signal-item .score {
    font-size: 18px;
    font-weight: 700;
    font-family: monospace;
}

/* ========== 技术分析页面 ========== */
.analysis-layout {
    display: grid;
    grid-template-columns: 260px 1fr;
    grid-template-rows: auto 1fr;
    gap: 16px;
    height: calc(100vh - var(--header-height) - 40px);
}

.stock-selector {
    grid-row: 1 / 2;
    grid-column: 1 / 2;
}

.stock-selector select {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 14px;
    outline: none;
}

.stock-info-mini {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--border-color);
    font-size: 13px;
    color: var(--text-secondary);
}

.stock-info-mini .price {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 4px 0;
}

.main-chart {
    grid-row: 1 / 2;
    grid-column: 2 / 3;
    display: flex;
    flex-direction: column;
}

.indicator-chart {
    grid-row: 2 / 3;
    grid-column: 1 / 3;
    display: flex;
    flex-direction: column;
}

.chart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
    flex-wrap: wrap;
    gap: 8px;
}

.chart-controls,
.indicator-tabs {
    display: flex;
    gap: 4px;
}

.chart-period,
.indicator-tab {
    padding: 4px 12px;
    border: 1px solid var(--border-color);
    background: var(--bg-secondary);
    color: var(--text-secondary);
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 12px;
    transition: var(--transition);
}

.chart-period.active,
.indicator-tab.active {
    background-color: var(--accent-primary);
    color: white;
    border-color: var(--accent-primary);
}

.chart-container {
    flex: 1;
    min-height: 300px;
}

/* ========== 交易信号页面 ========== */
.signals-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 12px;
}

.stat-box {
    background-color: var(--bg-secondary);
    border-radius: var(--radius);
    padding: 16px;
    text-align: center;
    border: 1px solid var(--border-color);
}

.stat-box .label {
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.stat-box .value {
    font-size: 28px;
    font-weight: 700;
}

.signal-list-card {
    min-height: 400px;
}

.filter-group {
    display: flex;
    gap: 8px;
}

.filter-group select {
    padding: 6px 10px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 13px;
    outline: none;
}

.signal-timeline {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

/* ========== 参数配置页面 ========== */
.settings-layout {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 16px;
    max-width: 1200px;
}

.settings-card {
    height: fit-content;
}

.form-group {
    margin-bottom: 14px;
}

.form-group:last-child {
    margin-bottom: 0;
}

.form-group label {
    display: block;
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 14px;
    outline: none;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus {
    border-color: var(--accent-primary);
}

.settings-actions {
    grid-column: 1 / -1;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
}

/* ========== 弹窗 ========== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0,0,0,0.6);
    z-index: 2000;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal.active {
    display: flex;
}

.modal-content {
    background-color: var(--bg-card);
    border-radius: var(--radius);
    width: 100%;
    max-width: 500px;
    max-height: 80vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    font-size: 16px;
}

.modal-close {
    background: none;
    border: none;
    font-size: 24px;
    color: var(--text-secondary);
    cursor: pointer;
    line-height: 1;
}

.modal-body {
    padding: 20px;
    overflow-y: auto;
}

.search-results {
    margin-top: 16px;
    max-height: 300px;
    overflow-y: auto;
}

.result-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 12px;
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid transparent;
}

.result-item:hover {
    background-color: var(--bg-hover);
    border-color: var(--border-color);
}

.result-item .code {
    font-family: monospace;
    font-size: 13px;
    color: var(--text-secondary);
}

.result-item .name {
    font-weight: 500;
}

.result-item .industry {
    font-size: 12px;
    color: var(--text-muted);
}

.result-item .btn-add {
    padding: 4px 12px;
    font-size: 12px;
}

/* ========== 加载遮罩 ========== */
.loading-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0,0,0,0.5);
    z-index: 3000;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 16px;
}

.loading-overlay.active {
    display: flex;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.loading-overlay p {
    color: var(--text-primary);
    font-size: 14px;
}

/* ========== Toast 提示 ========== */
.toast {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    padding: 12px 24px;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    font-size: 14px;
    z-index: 4000;
    opacity: 0;
    transition: all 0.3s ease;
    pointer-events: none;
}

.toast.active {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

.toast.success { border-left: 4px solid var(--accent-success); }
.toast.error { border-left: 4px solid var(--accent-danger); }
.toast.warning { border-left: 4px solid var(--accent-warning); }

/* ========== 响应式设计 ========== */
@media (max-width: 768px) {
    .app-header {
        padding: 0 10px;
        flex-wrap: wrap;
        height: auto;
        min-height: var(--header-height);
    }

    .header-brand h1 {
        font-size: 14px;
    }

    .header-nav {
        order: 3;
        width: 100%;
        justify-content: center;
        padding: 4px 0;
        overflow-x: auto;
    }

    .nav-btn {
        padding: 6px 10px;
        font-size: 12px;
    }

    .app-main {
        padding: 10px;
    }

    .analysis-layout {
        grid-template-columns: 1fr;
        grid-template-rows: auto auto 1fr;
        height: auto;
    }

    .stock-selector {
        grid-row: 1;
        grid-column: 1;
    }

    .main-chart {
        grid-row: 2;
        grid-column: 1;
        min-height: 350px;
    }

    .indicator-chart {
        grid-row: 3;
        grid-column: 1;
        min-height: 250px;
    }

    .chart-container {
        min-height: 250px;
    }

    .settings-layout {
        grid-template-columns: 1fr;
    }

    .data-table {
        font-size: 12px;
    }

    .data-table th,
    .data-table td {
        padding: 8px;
    }

    .search-box input {
        width: 120px;
    }
}

@media (max-width: 480px) {
    .index-list {
        grid-template-columns: repeat(2, 1fr);
    }

    .summary-item,
    .stat-box {
        padding: 12px;
    }

    .card {
        padding: 12px;
    }
}