/* Stock Buddy 样式 */

:root {
    --primary: #3b82f6;
    --primary-dark: #2563eb;
    --secondary: #64748b;
    --success: #22c55e;
    --danger: #ef4444;
    --warning: #f59e0b;
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --border: #334155;
    --radius: 8px;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
}

#app {
    display: flex;
    min-height: 100vh;
}

/* 侧边栏 */
.sidebar {
    width: 240px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
}

.logo {
    padding: 24px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid var(--border);
}

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

.logo-text {
    font-size: 20px;
    font-weight: 700;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-menu {
    flex: 1;
    padding: 16px 12px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: var(--radius);
    color: var(--text-secondary);
    text-decoration: none;
    margin-bottom: 4px;
    transition: all 0.2s;
}

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

.nav-item.active {
    background: rgba(59, 130, 246, 0.15);
    color: var(--primary);
}

.nav-icon {
    font-size: 18px;
}

.sidebar-footer {
    padding: 16px;
    border-top: 1px solid var(--border);
}

.market-status {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-secondary);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.status-dot.green {
    background: var(--success);
    box-shadow: 0 0 8px var(--success);
}

/* 主内容区 */
.main-content {
    flex: 1;
    margin-left: 240px;
    display: flex;
    flex-direction: column;
}

.header {
    height: 64px;
    padding: 0 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border);
    background: var(--bg-secondary);
}

.header h1 {
    font-size: 24px;
    font-weight: 600;
}

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

.content {
    flex: 1;
    padding: 32px;
    overflow-y: auto;
}

/* 页面切换 */
.page {
    display: none;
}

.page.active {
    display: block;
}

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: var(--radius);
    border: none;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

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

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

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

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

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

/* 统计卡片 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-bottom: 32px;
}

.stat-card {
    background: var(--bg-secondary);
    padding: 24px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.stat-label {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.stat-value {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 8px;
}

.stat-value.buy {
    color: var(--success);
}

.stat-value.sell {
    color: var(--danger);
}

.stat-change {
    font-size: 14px;
    font-weight: 500;
}

.stat-change.positive {
    color: var(--success);
}

.stat-change.negative {
    color: var(--danger);
}

.stat-label-small {
    font-size: 13px;
    color: var(--text-secondary);
}

/* 表格 */
.section {
    background: var(--bg-secondary);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    margin-bottom: 24px;
}

.section-title {
    padding: 20px 24px;
    font-size: 18px;
    font-weight: 600;
    border-bottom: 1px solid var(--border);
}

.section-header {
    padding: 20px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border);
}

.table-container {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th,
.data-table td {
    padding: 16px 24px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.data-table th {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.data-table tbody tr:hover {
    background: rgba(255, 255, 255, 0.03);
}

.data-table .positive {
    color: var(--success);
}

.data-table .negative {
    color: var(--danger);
}

.data-table .loading {
    text-align: center;
    color: var(--text-secondary);
    padding: 40px;
}

/* 信号标签 */
.signal-tag {
    display: inline-flex;
    align-items: center;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.signal-tag.buy {
    background: rgba(34, 197, 94, 0.15);
    color: var(--success);
}

.signal-tag.sell {
    background: rgba(239, 68, 68, 0.15);
    color: var(--danger);
}

.signal-tag.hold {
    background: rgba(148, 163, 184, 0.15);
    color: var(--text-secondary);
}

/* 搜索框 */
.search-box {
    display: flex;
    gap: 12px;
    padding: 24px;
    border-bottom: 1px solid var(--border);
}

.search-box input {
    flex: 1;
    padding: 12px 16px;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text-primary);
    font-size: 14px;
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary);
}

/* 分析结果 */
.analysis-result {
    padding: 24px;
}

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

.result-loading {
    text-align: center;
    padding: 60px;
    color: var(--text-secondary);
}

.result-card {
    background: var(--bg-primary);
    border-radius: var(--radius);
    padding: 24px;
    margin-bottom: 16px;
}

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

.result-title {
    font-size: 20px;
    font-weight: 600;
}

.result-body {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.result-item {
    padding: 16px;
    background: var(--bg-secondary);
    border-radius: var(--radius);
}

.result-label {
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

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

/* 弹窗 */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal.hidden {
    display: none;
}

.modal-content {
    background: var(--bg-secondary);
    border-radius: var(--radius);
    width: 100%;
    max-width: 480px;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    padding: 20px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border);
}

.modal-header h3 {
    font-size: 18px;
    font-weight: 600;
}

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

.modal-close:hover {
    color: var(--text-primary);
}

/* 表单 */
form {
    padding: 24px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--text-secondary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text-primary);
    font-size: 14px;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    margin-top: 24px;
}

/* 设置页 */
.settings-form {
    padding: 24px;
    max-width: 480px;
}

.toggle {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
}

.toggle input {
    display: none;
}

.toggle-slider {
    width: 48px;
    height: 24px;
    background: var(--bg-tertiary);
    border-radius: 12px;
    position: relative;
    transition: all 0.2s;
}

.toggle-slider::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    background: white;
    border-radius: 50%;
    top: 2px;
    left: 2px;
    transition: all 0.2s;
}

.toggle input:checked + .toggle-slider {
    background: var(--primary);
}

.toggle input:checked + .toggle-slider::after {
    left: 26px;
}

.toggle-label {
    font-size: 14px;
    color: var(--text-primary);
}

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 60px;
    color: var(--text-secondary);
}

/* 响应式 */
@media (max-width: 1200px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .sidebar {
        width: 60px;
    }
    
    .logo-text,
    .nav-item span:not(.nav-icon) {
        display: none;
    }
    
    .main-content {
        margin-left: 60px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .result-body {
        grid-template-columns: 1fr;
    }
}