:root {
    --bg-primary: #0f1117;
    --bg-secondary: #1a1d27;
    --bg-tertiary: #14161e;
    --bg-hover: #1e2235;
    --border-color: #2d3140;
    --text-primary: #fff;
    --text-secondary: #e1e4e8;
    --text-muted: #8b8fa3;
    --text-dim: #6b7080;
    --accent: #4a6cf7;
    --accent-hover: #5b7bff;
    --accent-light: #6c8cff;
    --positive: #22c55e;
    --negative: #ef4444;
    --warning: #fb923c;
    --info: #38bdf8;
    --card-bg: #22253a;
    --input-bg: #14161e;
    --positive-bg: #0f3d1f;
    --negative-bg: #3d0f0f;
    --warning-bg: #3d2a0f;
    --info-bg: #0f2a3d;
}

.light-theme {
    --bg-primary: #f5f6fa;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f0f1f5;
    --bg-hover: #e8eaf0;
    --border-color: #d1d5db;
    --text-primary: #1a1a2e;
    --text-secondary: #374151;
    --text-muted: #6b7280;
    --text-dim: #9ca3af;
    --accent: #3b5bdb;
    --accent-hover: #4c6ef5;
    --accent-light: #5c7cff;
    --positive: #16a34a;
    --negative: #dc2626;
    --warning: #ea580c;
    --info: #0284c7;
    --card-bg: #f0f1f5;
    --input-bg: #f9fafb;
    --positive-bg: #dcfce7;
    --negative-bg: #fee2e2;
    --warning-bg: #ffedd5;
    --info-bg: #e0f2fe;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-secondary);
    min-height: 100vh;
}

.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-container {
    width: 100%;
    max-width: 480px;
    padding: 20px;
}

.login-card {
    background: var(--bg-secondary);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.login-header {
    padding: 40px 30px 20px;
    text-align: center;
}

.login-header h1 {
    font-size: 28px;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.login-header p {
    color: var(--text-muted);
    font-size: 14px;
}

.login-body {
    padding: 20px 30px 40px;
}

.features-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 30px;
}

.feature-item {
    background: var(--card-bg);
    padding: 14px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    color: var(--text-muted);
}

.feature-icon {
    font-size: 18px;
    color: var(--accent-light);
}

.login-btn {
    display: block;
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, var(--accent), var(--accent-light));
    color: #fff;
    text-align: center;
    text-decoration: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    transition: opacity 0.2s;
}

.login-btn:hover {
    opacity: 0.9;
}

.warning-box {
    background: #2a2218;
    border: 1px solid #5c4813;
    border-radius: 10px;
    padding: 20px;
    font-size: 13px;
    color: #d4a841;
}

.light-theme .warning-box {
    background: #fef9c3;
    border-color: #fbbf24;
    color: #92400e;
}

.warning-box ul {
    margin: 10px 0;
    padding-left: 20px;
}

.warning-box li {
    margin: 4px 0;
}

.warning-box code {
    background: var(--bg-secondary);
    padding: 3px 8px;
    border-radius: 4px;
    font-size: 12px;
    color: var(--accent-light);
    display: inline-block;
    margin-top: 6px;
}

.top-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 24px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
}

.top-bar-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.top-bar h1 {
    font-size: 18px;
    color: var(--text-primary);
}

.top-bar-right {
    display: flex;
    align-items: center;
    gap: 10px;
}

.last-updated {
    font-size: 12px;
    color: var(--text-dim);
}

.btn {
    padding: 8px 16px;
    border-radius: 8px;
    border: none;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s;
}

.btn-refresh {
    background: var(--accent);
    color: #fff;
}

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

.btn-theme {
    background: var(--card-bg);
    color: var(--text-muted);
    border: 1px solid var(--border-color);
}

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

.btn-settings {
    background: var(--card-bg);
    color: var(--text-muted);
}

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

.btn-logout {
    background: var(--card-bg);
    color: var(--text-muted);
}

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

.form-group {
    margin-bottom: 16px;
    position: relative;
}

.form-group label {
    display: block;
    font-size: 12px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 6px;
}

.form-group input {
    width: 100%;
    padding: 12px 14px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background: var(--input-bg);
    color: var(--text-secondary);
    font-size: 14px;
    outline: none;
}

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

.toggle-pass {
    position: absolute;
    right: 12px;
    top: 36px;
    font-size: 12px;
    color: var(--accent-light);
    cursor: pointer;
}

.toggle-pass:hover {
    color: var(--text-primary);
}

.settings-links {
    text-align: center;
    margin-top: 16px;
}

.settings-link,
.back-link {
    color: var(--accent-light);
    text-decoration: none;
    font-size: 13px;
}

.settings-link:hover,
.back-link:hover {
    color: var(--text-primary);
}

.current-creds {
    background: var(--input-bg);
    padding: 14px;
    border-radius: 8px;
    font-size: 13px;
}

.current-creds p {
    margin: 6px 0;
    color: var(--text-muted);
}

.current-creds code {
    background: var(--card-bg);
    padding: 2px 8px;
    border-radius: 4px;
    color: var(--accent-light);
    font-size: 12px;
}

.success-box {
    background: #1a2a18;
    border: 1px solid #2e5c1a;
    border-radius: 10px;
    padding: 14px;
    font-size: 13px;
    color: var(--positive);
}

.light-theme .success-box {
    background: #dcfce7;
    border-color: #86efac;
    color: #166534;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

.stats-row {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 14px;
    margin-bottom: 20px;
}

.stat-card {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 18px;
    border: 1px solid var(--border-color);
    text-align: center;
}

.stat-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.stat-label {
    font-size: 12px;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-bullish {
    border-color: #1a4d2e;
}

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

.stat-bearish {
    border-color: #4d1a1a;
}

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

.stat-bullish-light {
    border-color: #1a3d4d;
}

.stat-bullish-light .stat-value {
    color: var(--info);
}

.stat-bearish-light {
    border-color: #4d3a1a;
}

.stat-bearish-light .stat-value {
    color: var(--warning);
}

.light-theme .stat-bullish {
    border-color: #86efac;
    background: #f0fdf4;
}

.light-theme .stat-bearish {
    border-color: #fca5a5;
    background: #fef2f2;
}

.light-theme .stat-bullish-light {
    border-color: #7dd3fc;
    background: #f0f9ff;
}

.light-theme .stat-bearish-light {
    border-color: #fdba74;
    background: #fff7ed;
}

.filters-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
    gap: 16px;
    flex-wrap: wrap;
}

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

.filter-btn {
    padding: 8px 16px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background: var(--bg-secondary);
    color: var(--text-muted);
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s;
}

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

.filter-btn.active {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

.search-box input {
    padding: 8px 16px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background: var(--bg-secondary);
    color: var(--text-secondary);
    font-size: 13px;
    width: 220px;
    outline: none;
}

.search-box input:focus {
    border-color: var(--accent);
}

.table-container {
    background: var(--bg-secondary);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.loading-spinner {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
    gap: 16px;
}

.spinner {
    width: 36px;
    height: 36px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

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

.error-box {
    padding: 14px 20px;
    background: var(--negative-bg);
    color: var(--negative);
    border-bottom: 1px solid var(--border-color);
    font-size: 13px;
}

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

.data-table thead th {
    background: var(--bg-tertiary);
    padding: 12px 14px;
    text-align: left;
    font-size: 11px;
    font-weight: 600;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    cursor: pointer;
    user-select: none;
    position: sticky;
    top: 0;
    white-space: nowrap;
    border-bottom: 2px solid var(--accent);
}

.data-table thead th.num-col {
    text-align: right;
}

.data-table thead th:hover {
    color: var(--text-muted);
}

.data-table thead th small {
    display: block;
    font-weight: 400;
    text-transform: none;
    letter-spacing: 0;
    opacity: 0.7;
    font-size: 10px;
}

.data-table tbody td {
    padding: 10px 14px;
    font-size: 13px;
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
}

.data-table tbody td.num-col {
    text-align: right;
    font-variant-numeric: tabular-nums;
}

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

.data-table tbody tr:nth-child(even) {
    background: var(--bg-tertiary);
}

.data-table tbody tr:nth-child(even):hover {
    background: var(--bg-hover);
}

.symbol-cell {
    font-weight: 600;
}

.symbol-cell a {
    color: var(--accent-light);
    text-decoration: none;
}

.symbol-cell a:hover {
    color: var(--accent);
    text-decoration: underline;
}

.positive {
    color: var(--positive);
    font-weight: 600;
}

.negative {
    color: var(--negative);
    font-weight: 600;
}

.signal-badge {
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.signal-long-buildup {
    background: var(--positive-bg);
    color: var(--positive);
}

.signal-short-buildup {
    background: var(--negative-bg);
    color: var(--negative);
}

.signal-long-unwinding {
    background: var(--warning-bg);
    color: var(--warning);
}

.signal-short-covering {
    background: var(--info-bg);
    color: var(--info);
}

.signal-neutral {
    background: var(--card-bg);
    color: var(--text-muted);
}

.btn-detail {
    padding: 5px 12px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    background: transparent;
    color: var(--accent-light);
    font-size: 12px;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-detail:hover {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}

.modal-overlay {
    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: 200;
    padding: 20px;
}

.modal-content {
    background: var(--bg-secondary);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    width: 100%;
    max-width: 900px;
    max-height: 80vh;
    overflow: auto;
}

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

.modal-header h2 {
    font-size: 18px;
    color: var(--text-primary);
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-dim);
    font-size: 24px;
    cursor: pointer;
    padding: 4px 8px;
}

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

.modal-body {
    padding: 24px;
}

.detail-header {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

.detail-stat {
    background: var(--bg-tertiary);
    padding: 16px;
    border-radius: 10px;
    text-align: center;
}

.detail-label {
    display: block;
    font-size: 11px;
    color: var(--text-dim);
    text-transform: uppercase;
    margin-bottom: 6px;
}

.detail-value {
    display: block;
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
}

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

.chain-table th {
    background: var(--bg-tertiary);
    padding: 10px 12px;
    font-size: 11px;
    font-weight: 600;
    color: var(--text-dim);
    text-transform: uppercase;
    text-align: center;
}

.chain-table td {
    padding: 8px 12px;
    font-size: 13px;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.chain-table .strike-col {
    background: var(--bg-tertiary);
    font-weight: 700;
    color: var(--text-primary);
}

.chain-table .atm-row {
    background: var(--info-bg);
}

.chain-table .atm-row .strike-col {
    background: var(--info-bg);
    color: var(--accent-light);
}

.no-data {
    text-align: center;
    color: var(--text-dim);
    padding: 40px;
}

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

.chart-modal-content {
    background: var(--bg-secondary);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    width: 100%;
    max-width: 1100px;
    height: 80vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.chart-container {
    width: 100%;
    height: 500px;
    min-height: 400px;
    flex: 1;
}

.chart-modal-content .chart-container {
    flex: 1;
    height: auto;
}

.chart-fullscreen {
    max-width: 100% !important;
    width: 100% !important;
    height: 100vh !important;
    border-radius: 0 !important;
    margin: 0;
}

.modal-header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.btn-notify {
    background: var(--card-bg);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    padding: 6px 14px;
    border-radius: 6px;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-notify:hover {
    border-color: var(--accent);
    color: var(--accent-light);
}

.btn-notify.notify-on {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}

.btn-chart-toggle {
    background: var(--card-bg);
    color: var(--accent-light);
    border: 1px solid var(--border-color);
    padding: 6px 14px;
    border-radius: 6px;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-chart-toggle:hover {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}

.action-cell {
    display: flex;
    gap: 6px;
    align-items: center;
}

.tradingview-widget-container {
    width: 100%;
    height: 100%;
}

.tradingview-widget-container__widget {
    width: 100%;
    height: 100%;
}

.alert-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 300;
    padding: 20px;
}

.alert-box {
    background: var(--bg-secondary);
    border-radius: 16px;
    border: 1px solid var(--accent);
    width: 100%;
    max-width: 600px;
    max-height: 70vh;
    overflow: auto;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.alert-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 20px 24px 12px;
    border-bottom: 1px solid var(--border-color);
}

.alert-header h3 {
    font-size: 16px;
    color: var(--text-primary);
    font-weight: 600;
}

.alert-icon {
    font-size: 22px;
    color: var(--warning);
}

.alert-body {
    padding: 16px 24px;
}

.alert-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.alert-item {
    background: var(--bg-tertiary);
    border-radius: 10px;
    padding: 14px 16px;
    border-left: 4px solid var(--accent);
}

.alert-symbol {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.alert-details {
    font-size: 13px;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
}

.alert-footer {
    padding: 12px 24px 20px;
    text-align: center;
}

.alert-footer .btn {
    min-width: 120px;
    padding: 10px 24px;
    font-size: 14px;
}

@media (max-width: 768px) {
    .stats-row {
        grid-template-columns: repeat(2, 1fr);
    }

    .stats-row .stat-card:first-child {
        grid-column: span 2;
    }

    .filters-bar {
        flex-direction: column;
        align-items: stretch;
    }

    .search-box input {
        width: 100%;
    }

    .top-bar {
        flex-direction: column;
        gap: 10px;
    }

    .top-bar-left {
        flex-direction: column;
        gap: 4px;
    }

    .detail-header {
        grid-template-columns: 1fr;
    }

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