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

:root {
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #21262d;
    --border-color: #30363d;
    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --text-muted: #6e7681;
    --accent-primary: #00d4aa;
    --accent-hover: #00f5c4;
    --positive: #3fb950;
    --negative: #f85149;
    --warning: #d29922;
    --blue: #58a6ff;
    --header-height: 56px;
    --sidebar-width: 280px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-size: 14px;
    line-height: 1.5;
    overflow: hidden;
}

.app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

/* Header */
.header {
    height: var(--header-height);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    flex-shrink: 0;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 40px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    font-weight: 600;
}

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

.logo-text {
    background: linear-gradient(135deg, var(--accent-primary), var(--blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav {
    display: flex;
    gap: 8px;
}

.nav-item {
    padding: 8px 16px;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 6px;
    transition: all 0.2s;
}

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

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

.header-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.btn {
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.btn-outline:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

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

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

.btn-full {
    width: 100%;
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-primary), var(--blue));
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    cursor: pointer;
}

/* Main Content */
.main-content {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* Sidebar */
.sidebar-left, .sidebar-right {
    width: var(--sidebar-width);
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    overflow-y: auto;
    flex-shrink: 0;
}

.sidebar-right {
    border-right: none;
    border-left: 1px solid var(--border-color);
}

.sidebar-section {
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
}

.section-header h3 {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 12px;
}

/* Strategy List */
.strategy-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.strategy-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 12px;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
}

.strategy-item:hover {
    background: var(--bg-tertiary);
}

.strategy-item.active {
    background: var(--bg-tertiary);
    border: 1px solid var(--accent-primary);
}

.strategy-name {
    font-size: 14px;
}

.strategy-status {
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 10px;
    background: var(--bg-primary);
    color: var(--text-muted);
}

.strategy-status.running {
    background: rgba(63, 185, 80, 0.15);
    color: var(--positive);
}

/* Param Form */
.param-form {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

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

.form-input {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 13px;
    outline: none;
    transition: border-color 0.2s;
}

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

.date-range {
    display: flex;
    align-items: center;
    gap: 8px;
}

.date-range span {
    color: var(--text-muted);
    font-size: 12px;
}

/* Symbol List */
.symbol-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.symbol-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 12px;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
}

.symbol-item:hover {
    background: var(--bg-tertiary);
}

.symbol-item.active {
    background: var(--bg-tertiary);
}

.symbol-name {
    font-size: 14px;
    font-weight: 500;
}

.symbol-price {
    font-size: 13px;
    color: var(--text-secondary);
}

/* Chart Area */
.chart-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background: var(--bg-primary);
}

.chart-tabs {
    display: flex;
    gap: 4px;
    padding: 12px 16px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

.tab-btn {
    padding: 8px 16px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 13px;
    cursor: pointer;
    border-radius: 6px;
    transition: all 0.2s;
}

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

.tab-btn.active {
    color: var(--accent-primary);
    background: rgba(0, 212, 170, 0.1);
}

.chart-container {
    flex: 1;
    padding: 16px;
    position: relative;
}

.chart-placeholder {
    height: 100%;
    background: var(--bg-secondary);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.chart-grid {
    height: calc(100% - 40px);
    padding: 16px;
}

.equity-curve {
    width: 100%;
    height: 100%;
}

.chart-toolbar {
    position: absolute;
    top: 12px;
    right: 12px;
    display: flex;
    gap: 4px;
}

.toolbar-btn {
    padding: 4px 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 12px;
    cursor: pointer;
    border-radius: 4px;
    transition: all 0.2s;
}

.toolbar-btn:hover {
    color: var(--text-primary);
    border-color: var(--text-secondary);
}

.toolbar-btn.active {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: var(--bg-primary);
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    gap: 12px;
    padding: 16px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
}

.stat-card {
    background: var(--bg-tertiary);
    border-radius: 8px;
    padding: 12px;
    text-align: center;
}

.stat-label {
    font-size: 11px;
    color: var(--text-muted);
    margin-bottom: 4px;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.stat-value {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

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

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

/* Position List */
.position-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.position-item {
    background: var(--bg-tertiary);
    border-radius: 8px;
    padding: 12px;
}

.position-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 10px;
}

.position-symbol {
    font-weight: 600;
    font-size: 14px;
}

.position-side {
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 4px;
    font-weight: 500;
}

.position-side.long {
    background: rgba(63, 185, 80, 0.15);
    color: var(--positive);
}

.position-side.short {
    background: rgba(248, 81, 73, 0.15);
    color: var(--negative);
}

.position-details {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.position-row {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
}

.position-row span:first-child {
    color: var(--text-muted);
}

.position-row span:last-child {
    color: var(--text-primary);
}

.profit {
    color: var(--positive) !important;
}

/* Signal List */
.signal-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.signal-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px;
    background: var(--bg-tertiary);
    border-radius: 6px;
}

.signal-icon {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 14px;
}

.signal-item.buy .signal-icon {
    background: rgba(63, 185, 80, 0.15);
    color: var(--positive);
}

.signal-item.sell .signal-icon {
    background: rgba(248, 81, 73, 0.15);
    color: var(--negative);
}

.signal-content {
    flex: 1;
}

.signal-type {
    font-size: 13px;
    font-weight: 500;
}

.signal-time {
    font-size: 11px;
    color: var(--text-muted);
}

/* Trade List */
.trade-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.trade-item {
    padding: 10px;
    background: var(--bg-tertiary);
    border-radius: 6px;
}

.trade-info {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 4px;
}

.trade-symbol {
    font-size: 13px;
    font-weight: 500;
}

.trade-action {
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 4px;
    font-weight: 500;
}

.trade-action.buy {
    background: rgba(63, 185, 80, 0.15);
    color: var(--positive);
}

.trade-action.sell {
    background: rgba(248, 81, 73, 0.15);
    color: var(--negative);
}

.trade-details {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    color: var(--text-secondary);
}

.trade-time {
    color: var(--text-muted);
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* Responsive */
@media (max-width: 1400px) {
    .stats-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 1200px) {
    :root {
        --sidebar-width: 240px;
    }
    
    .sidebar-right {
        display: none;
    }
}