/* Reset & Base Styles */
* {
    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-blue: #58a6ff;
    --accent-green: #238636;
    --accent-red: #da3633;
    --accent-yellow: #d29922;
    --hover-bg: #1c2128;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Header */
.header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 2rem;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1600px;
    margin: 0 auto;
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 600;
    display: inline-block;
    margin-right: 1rem;
}

.status-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--accent-green);
    color: white;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
}

.status-badge.disconnected {
    background: var(--accent-red);
}

.time {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Navigation Tabs */
.nav-tabs {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 0 2rem;
    display: flex;
    gap: 0.5rem;
    position: sticky;
    top: 73px;
    z-index: 99;
}

.nav-tab {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 0.875rem 1.5rem;
    cursor: pointer;
    font-size: 0.9375rem;
    font-weight: 500;
    border-bottom: 2px solid transparent;
    transition: all 0.2s;
}

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

.nav-tab.active {
    color: var(--accent-blue);
    border-bottom-color: var(--accent-blue);
}

/* Main Content */
.main-content {
    max-width: 1600px;
    margin: 0 auto;
    padding: 2rem;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* Search Section */
.search-section {
    margin-bottom: 2rem;
}

.search-box-container {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.search-input {
    flex: 1;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.75rem 1rem;
    border-radius: 6px;
    font-size: 0.9375rem;
    transition: border-color 0.2s;
}

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

.select-input {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.75rem 1rem;
    border-radius: 6px;
    font-size: 0.9375rem;
    cursor: pointer;
    min-width: 150px;
}

.select-input:focus {
    outline: none;
    border-color: var(--accent-blue);
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 6px;
    font-size: 0.9375rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

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

.btn-primary:hover {
    background: #2ea043;
}

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

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

/* Quick Symbols */
.quick-symbols {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
    min-height: 40px;
}

.quick-symbols .label {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
}

.chip {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s;
}

.chip:hover {
    background: var(--hover-bg);
    border-color: var(--accent-blue);
}

/* Stock Categories */
.stock-category {
    margin-bottom: 1rem;
}

.category-header {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    padding-left: 0.5rem;
    border-left: 3px solid var(--accent-blue);
}

.category-symbols {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

/* Grid Layouts */
.grid-2col {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.grid-3col {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

@media (max-width: 1200px) {
    .grid-2col {
        grid-template-columns: 1fr;
    }
    .grid-3col {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .grid-3col {
        grid-template-columns: 1fr;
    }
}

/* Panels */
.panel {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
}

.panel.large {
    grid-column: span 1;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
}

.panel-header h3 {
    font-size: 1rem;
    font-weight: 600;
}

/* Chart Container */
.chart-container {
    padding: 1rem;
    height: 400px;
    position: relative;
}

.chart-controls {
    display: flex;
    gap: 0.5rem;
}

.chart-controls select {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.375rem 0.75rem;
    border-radius: 4px;
    font-size: 0.8125rem;
    cursor: pointer;
}

/* Market Summary */
.market-summary {
    padding: 1.25rem;
}

.summary-placeholder {
    text-align: center;
    padding: 3rem;
    color: var(--text-secondary);
}

.summary-stat {
    display: flex;
    justify-content: space-between;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--bg-tertiary);
}

.summary-stat:last-child {
    border-bottom: none;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.stat-value {
    font-weight: 600;
    font-size: 0.9375rem;
}

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

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

.price-display {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.price-change {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    font-size: 0.875rem;
    font-weight: 500;
}

.price-change.positive {
    background: rgba(35, 134, 54, 0.2);
    color: var(--accent-green);
}

.price-change.negative {
    background: rgba(218, 54, 51, 0.2);
    color: var(--accent-red);
}

/* Indicators List */
.indicators-list {
    padding: 1rem;
}

.indicator-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--bg-tertiary);
}

.indicator-item:last-child {
    border-bottom: none;
}

.indicator-name {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.indicator-value {
    font-weight: 600;
    font-size: 0.9375rem;
}

/* Signals Grid */
.signals-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1rem;
    padding: 1.25rem;
}

.signal-card {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-left: 3px solid var(--accent-blue);
    border-radius: 6px;
    padding: 1rem;
    transition: transform 0.2s;
}

.signal-card:hover {
    transform: translateY(-2px);
}

.signal-card.buy {
    border-left-color: var(--accent-green);
}

.signal-card.sell {
    border-left-color: var(--accent-red);
}

.signal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}

.signal-type {
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.5px;
}

.signal-type.buy {
    color: var(--accent-green);
}

.signal-type.sell {
    color: var(--accent-red);
}

.signal-confidence {
    background: var(--bg-primary);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
}

.signal-strategy {
    color: var(--text-secondary);
    font-size: 0.8125rem;
    margin-bottom: 0.5rem;
}

.signal-reason {
    color: var(--text-primary);
    font-size: 0.875rem;
    margin-bottom: 0.75rem;
    line-height: 1.5;
}

.signal-meta {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
    padding: 0.5rem;
    background: var(--bg-primary);
    border-radius: 4px;
    font-size: 0.75rem;
}

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

.meta-item strong {
    color: var(--accent-blue);
    font-weight: 600;
}

.zone-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
    padding: 0.75rem;
    background: var(--bg-secondary);
    border-radius: 6px;
    font-size: 0.75rem;
}

.zone-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-weight: 600;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.zone-badge.demand {
    background: rgba(35, 134, 54, 0.2);
    color: var(--accent-green);
    border: 1px solid var(--accent-green);
}

.zone-badge.supply {
    background: rgba(218, 54, 51, 0.2);
    color: var(--accent-red);
    border: 1px solid var(--accent-red);
}

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

.zone-fresh {
    color: var(--accent-blue);
    font-weight: 600;
}

.position-sizing {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
    margin-bottom: 1rem;
    padding: 0.75rem;
    background: rgba(88, 166, 255, 0.05);
    border-left: 3px solid var(--accent-blue);
    border-radius: 4px;
    font-size: 0.75rem;
}

.position-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem;
    background: var(--bg-secondary);
    border-radius: 4px;
}

.position-item.highlight {
    grid-column: 1 / -1;
    background: var(--bg-tertiary);
    border: 1px solid var(--accent-blue);
}

.position-item .label {
    color: var(--text-secondary);
    font-weight: 500;
}

.position-item .value {
    color: var(--text-primary);
    font-weight: 600;
}

.position-item.highlight .value {
    color: var(--accent-blue);
}

.signal-levels {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
    font-size: 0.75rem;
}

.level {
    background: var(--bg-primary);
    padding: 0.5rem;
    border-radius: 4px;
    text-align: center;
}

.level-label {
    color: var(--text-secondary);
    display: block;
    margin-bottom: 0.25rem;
}

.level-value {
    font-weight: 600;
}

/* Backtest Controls */
.backtest-controls {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.control-group label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.input {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.75rem 1rem;
    border-radius: 6px;
    font-size: 0.9375rem;
    min-width: 200px;
}

.input:focus {
    outline: none;
    border-color: var(--accent-blue);
}

/* Loading Overlay */
.loading-overlay {
    text-align: center;
    padding: 4rem;
}

.spinner {
    width: 50px;
    height: 50px;
    margin: 0 auto 1rem;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Metrics Grid */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    padding: 1.25rem;
}

.metric {
    background: var(--bg-tertiary);
    padding: 1rem;
    border-radius: 6px;
    border-left: 3px solid var(--accent-blue);
}

.metric.positive {
    border-left-color: var(--accent-green);
}

.metric.negative {
    border-left-color: var(--accent-red);
}

.metric-label {
    color: var(--text-secondary);
    font-size: 0.8125rem;
    margin-bottom: 0.5rem;
}

.metric-value {
    font-size: 1.5rem;
    font-weight: 700;
}

.metric-value.positive {
    color: var(--accent-green);
}

.metric-value.negative {
    color: var(--accent-red);
}

/* Watchlist Grid */
.watchlist-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
}

.watchlist-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.25rem;
    cursor: pointer;
    transition: all 0.2s;
}

.watchlist-card:hover {
    border-color: var(--accent-blue);
    transform: translateY(-2px);
}

.watchlist-symbol {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.watchlist-price {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.watchlist-change {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    font-size: 0.875rem;
    font-weight: 500;
}

.watchlist-change.positive {
    background: rgba(35, 134, 54, 0.2);
    color: var(--accent-green);
}

.watchlist-change.negative {
    background: rgba(218, 54, 51, 0.2);
    color: var(--accent-red);
}

/* Alerts */
.alert-form {
    padding: 1.25rem;
}

.alerts-list {
    padding: 1.25rem;
    max-height: 400px;
    overflow-y: auto;
}

.alert-item {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 1rem;
    margin-bottom: 0.75rem;
}

.alert-item:last-child {
    margin-bottom: 0;
}

.alert-item.triggered {
    border-left: 3px solid var(--accent-yellow);
}

.alert-title {
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.alert-details {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.alert-time {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.5rem;
}

/* Table */
.table-container {
    padding: 1.25rem;
    overflow-x: auto;
}

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

th {
    text-align: left;
    padding: 0.75rem;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    font-size: 0.8125rem;
    font-weight: 600;
    border-bottom: 1px solid var(--border-color);
}

td {
    padding: 0.75rem;
    border-bottom: 1px solid var(--bg-tertiary);
    font-size: 0.875rem;
}

tr:hover {
    background: var(--bg-tertiary);
}

/* Placeholder */
.placeholder {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 5px;
}

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

/* Responsive */
@media (max-width: 768px) {
    .header-content {
        padding: 0;
    }

    .nav-tabs {
        overflow-x: auto;
        padding: 0 1rem;
    }

    .main-content {
        padding: 1rem;
    }

    .search-box-container {
        flex-direction: column;
    }

    .backtest-controls {
        flex-direction: column;
    }

    .control-group {
        width: 100%;
    }

    .input, .select-input {
        width: 100%;
    }

    .metrics-grid {
        grid-template-columns: 1fr;
    }
}

/* Utility Classes */
.text-muted {
    color: var(--text-muted) !important;
    opacity: 0.7;
}

/* Position Calculator Styles */
.position-calculator {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--border);
}

.calc-toggle {
    width: 100%;
    padding: 8px 12px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.calc-toggle:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.calc-inputs {
    margin-top: 10px;
}

.calc-row {
    display: flex;
    gap: 8px;
    margin-bottom: 10px;
}

.calc-input {
    flex: 1;
    padding: 8px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text-primary);
    font-size: 13px;
}

.calc-input:focus {
    outline: none;
    border-color: var(--accent);
}

.btn-small {
    padding: 8px 16px;
    font-size: 13px;
    white-space: nowrap;
}

.calc-results {
    margin-top: 10px;
    padding: 12px;
    background: var(--bg-secondary);
    border-radius: 6px;
    border: 1px solid var(--border);
}

.calc-result-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.calc-result-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 6px;
}

.calc-label {
    font-size: 12px;
    color: var(--text-muted);
}

.calc-value {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

.calc-value.risk {
    color: var(--danger);
}