:root {
    --sf-bg: #0f1117;
    --sf-surface: #1a1d27;
    --sf-surface-2: #242836;
    --sf-border: #2d3348;
    --sf-text: #e4e6ed;
    --sf-text-muted: #8b8fa3;
    --sf-accent: #5b8af5;
    --sf-accent-hover: #7ba3ff;
    --sf-green: #22c55e;
    --sf-red: #ef4444;
    --sf-yellow: #f59e0b;
    --sf-sidebar-w: 240px;
    --sf-radius: 8px;
    font-family: 'Inter', -apple-system, sans-serif;
}

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

html, body { height: 100%; background: var(--sf-bg); color: var(--sf-text); }

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

.sf-sidebar {
    width: var(--sf-sidebar-w); background: var(--sf-surface);
    border-right: 1px solid var(--sf-border);
    display: flex; flex-direction: column; padding: 0;
    position: fixed; top: 0; bottom: 0; left: 0; z-index: 100;
}

.sf-logo {
    padding: 20px 16px; display: flex; align-items: center; gap: 10px;
    border-bottom: 1px solid var(--sf-border); font-weight: 700; font-size: 1.15rem;
}
.sf-logo-icon { font-size: 1.4rem; }
.sf-logo-text { background: linear-gradient(135deg, var(--sf-accent), #a78bfa); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }

.sf-nav { flex: 1; padding: 12px 8px; overflow-y: auto; }
.sf-nav-section { padding: 16px 12px 6px; font-size: 0.65rem; font-weight: 600; color: var(--sf-text-muted); letter-spacing: 0.1em; }
.sf-nav-link {
    display: flex; align-items: center; gap: 10px; padding: 10px 12px;
    color: var(--sf-text-muted); text-decoration: none; border-radius: var(--sf-radius);
    font-size: 0.875rem; transition: all 0.15s;
}
.sf-nav-link:hover { background: var(--sf-surface-2); color: var(--sf-text); }
.sf-nav-link.active { background: rgba(91,138,245,0.12); color: var(--sf-accent); font-weight: 500; }
.sf-nav-icon { font-size: 1.1rem; width: 22px; text-align: center; }

.sf-sidebar-user {
    padding: 16px; border-top: 1px solid var(--sf-border);
    display: flex; flex-direction: column; gap: 4px; font-size: 0.8rem;
}
.sf-sidebar-user span { color: var(--sf-text-muted); }
.sf-logout { color: var(--sf-accent); text-decoration: none; font-size: 0.75rem; }

.sf-main { margin-left: var(--sf-sidebar-w); flex: 1; min-height: 100vh; }
.sf-content { padding: 28px 32px; max-width: 1400px; }

/* Cards & Panels */
.sf-card {
    background: var(--sf-surface); border: 1px solid var(--sf-border);
    border-radius: var(--sf-radius); padding: 20px; margin-bottom: 16px;
}
.sf-card-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.sf-card-title { font-size: 1rem; font-weight: 600; }
.sf-grid { display: grid; gap: 16px; }
.sf-grid-2 { grid-template-columns: repeat(2, 1fr); }
.sf-grid-3 { grid-template-columns: repeat(3, 1fr); }
.sf-grid-4 { grid-template-columns: repeat(4, 1fr); }

/* Sentiment badges */
.sf-badge { padding: 3px 10px; border-radius: 12px; font-size: 0.75rem; font-weight: 600; display: inline-block; }
.sf-bull { background: rgba(34,197,94,0.15); color: var(--sf-green); }
.sf-bear { background: rgba(239,68,68,0.15); color: var(--sf-red); }
.sf-neutral { background: rgba(245,158,11,0.15); color: var(--sf-yellow); }
.sf-strong-bull { background: rgba(34,197,94,0.25); color: #4ade80; }
.sf-strong-bear { background: rgba(239,68,68,0.25); color: #f87171; }

/* Score bars */
.sf-score-bar { height: 6px; background: var(--sf-surface-2); border-radius: 3px; overflow: hidden; }
.sf-score-fill { height: 100%; border-radius: 3px; transition: width 0.3s; }
.sf-score-pos { background: var(--sf-green); }
.sf-score-neg { background: var(--sf-red); }
.sf-score-neutral { background: var(--sf-yellow); }

/* Buttons */
.sf-btn {
    padding: 8px 18px; border-radius: var(--sf-radius); font-size: 0.85rem; font-weight: 500;
    border: none; cursor: pointer; transition: all 0.15s; display: inline-flex; align-items: center; gap: 6px;
}
.sf-btn-primary { background: var(--sf-accent); color: #fff; }
.sf-btn-primary:hover { background: var(--sf-accent-hover); }
.sf-btn-ghost { background: transparent; border: 1px solid var(--sf-border); color: var(--sf-text); }
.sf-btn-ghost:hover { border-color: var(--sf-accent); color: var(--sf-accent); }
.sf-btn-danger { background: var(--sf-red); color: #fff; }
.sf-btn-sm { padding: 4px 12px; font-size: 0.78rem; }

/* Forms */
.sf-input, .sf-select {
    background: var(--sf-surface-2); border: 1px solid var(--sf-border); color: var(--sf-text);
    padding: 8px 14px; border-radius: var(--sf-radius); font-size: 0.875rem; width: 100%;
}
.sf-input:focus, .sf-select:focus { outline: none; border-color: var(--sf-accent); }
.sf-label { font-size: 0.8rem; font-weight: 500; color: var(--sf-text-muted); margin-bottom: 4px; display: block; }
.sf-form-group { margin-bottom: 16px; }

/* Stock picker */
.sf-stock-picker {
    display: grid;
    gap: 10px;
}

.sf-stock-picker-head {
    display: grid;
    gap: 10px;
}

.sf-stock-picker-focus {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.sf-stock-picker-tab {
    height: 32px;
    padding: 0 12px;
    border-radius: var(--sf-radius);
    border: 1px solid var(--sf-border);
    background: transparent;
    color: var(--sf-text-muted);
    cursor: pointer;
    font-size: 0.78rem;
}

.sf-stock-picker-tab:hover,
.sf-stock-picker-tab.active {
    border-color: var(--sf-accent);
    color: var(--sf-text);
    background: rgba(91,138,245,0.14);
}

.sf-stock-picker-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.sf-stock-picker-results {
    border: 1px solid var(--sf-border);
    border-radius: var(--sf-radius);
    overflow: hidden;
}

.sf-stock-picker-result {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-bottom: 1px solid var(--sf-border);
}

.sf-stock-picker-result:last-child {
    border-bottom: none;
}

.sf-stock-picker-result span,
.sf-stock-picker-result small {
    display: block;
    color: var(--sf-text-muted);
    font-size: 0.78rem;
    margin-top: 2px;
}

.sf-stock-picker-message,
.sf-stock-picker-empty {
    color: var(--sf-text-muted);
    font-size: 0.82rem;
}

.sf-stock-picker-error {
    color: var(--sf-red);
    font-size: 0.82rem;
}

/* Tables */
.sf-table { width: 100%; border-collapse: collapse; font-size: 0.85rem; }
.sf-table th { text-align: left; padding: 10px 12px; color: var(--sf-text-muted); font-weight: 600; font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.05em; border-bottom: 1px solid var(--sf-border); }
.sf-table td { padding: 10px 12px; border-bottom: 1px solid var(--sf-border); }
.sf-table tr:hover td { background: var(--sf-surface-2); }

/* Page header */
.sf-page-header { margin-bottom: 24px; }
.sf-page-title { font-size: 1.5rem; font-weight: 700; margin-bottom: 4px; }
.sf-page-subtitle { color: var(--sf-text-muted); font-size: 0.875rem; }

/* Stats */
.sf-stat { text-align: center; }
.sf-stat-value { font-size: 1.6rem; font-weight: 700; }
.sf-stat-label { font-size: 0.75rem; color: var(--sf-text-muted); margin-top: 2px; }

/* Price display */
.sf-price-up { color: var(--sf-green); }
.sf-price-down { color: var(--sf-red); }
.sf-price-flat { color: var(--sf-text-muted); }

/* Auth pages */
.sf-auth-page { display: flex; justify-content: center; align-items: center; min-height: 80vh; }
.sf-auth-card { background: var(--sf-surface); border: 1px solid var(--sf-border); border-radius: 12px; padding: 40px; width: 100%; max-width: 420px; }
.sf-auth-title { font-size: 1.3rem; font-weight: 700; text-align: center; margin-bottom: 24px; }

/* Alerts */
.sf-alert { padding: 12px 16px; border-radius: var(--sf-radius); font-size: 0.85rem; margin-bottom: 16px; }
.sf-alert-error { background: rgba(239,68,68,0.12); color: var(--sf-red); border: 1px solid rgba(239,68,68,0.25); }
.sf-alert-success { background: rgba(34,197,94,0.12); color: var(--sf-green); border: 1px solid rgba(34,197,94,0.25); }
.sf-alert-info { background: rgba(91,138,245,0.12); color: var(--sf-accent); border: 1px solid rgba(91,138,245,0.25); }

/* Loading */
.sf-loading { display: flex; justify-content: center; padding: 40px; color: var(--sf-text-muted); }


/* Ticker Tape Bar */
.sf-ticker-bar {
    position: fixed; top: 0; left: 0; right: 0; z-index: 200;
    height: 46px; background: var(--sf-surface);
    border-bottom: 1px solid var(--sf-border);
    overflow: hidden;
}

.sf-sidebar { top: 46px; }
.sf-main { margin-top: 46px; }

/* TradingView widget containers */
.sf-tv-chart, .sf-tv-analysis, .sf-tv-profile,
.sf-tv-financials, .sf-tv-heatmap, .sf-tv-mini, .sf-tv-tape,
.sf-tv-market-overview, .sf-tv-hotlists {
    width: 100%;
}

.sf-tv-market-overview { min-height: 500px; }
.sf-tv-hotlists { min-height: 480px; }

.sf-tv-chart iframe, .sf-tv-analysis iframe, .sf-tv-profile iframe,
.sf-tv-financials iframe, .sf-tv-heatmap iframe,
.sf-tv-market-overview iframe, .sf-tv-hotlists iframe {
    border: none !important;
}

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

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

.tradingview-widget-copyright {
    padding: 8px 12px 10px;
    font-size: 0.75rem;
    color: var(--sf-text-muted);
}

.tradingview-widget-copyright a {
    color: var(--sf-accent);
    text-decoration: none;
}

.tradingview-widget-copyright a:hover {
    color: var(--sf-accent-hover);
}

/* Market Sessions status grid */
.sf-market-sessions { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-bottom: 12px; }
.sf-exchange-status { text-align: center; padding: 12px 8px; border-radius: var(--sf-radius); transition: background 0.3s; }
.sf-exchange-name { font-weight: 600; font-size: 0.85rem; margin-bottom: 6px; }
.sf-exchange-time { font-size: 0.75rem; color: var(--sf-text-muted); margin-top: 6px; }
.sf-session-open { background: rgba(34,197,94,0.12); }
.sf-session-pre, .sf-session-after { background: rgba(245,158,11,0.12); }
.sf-session-closed { background: rgba(239,68,68,0.08); }
.sf-badge-open { background: var(--sf-green); color: #fff; }
.sf-badge-pre, .sf-badge-after { background: var(--sf-yellow); color: #1a1d27; }
.sf-badge-closed { background: rgba(239,68,68,0.6); color: #fff; }

@media (max-width: 640px) {
    .sf-market-sessions { grid-template-columns: repeat(2, 1fr); }
}

/* Responsive adjustments */
@media (max-width: 1200px) {
    .sf-grid-4 { grid-template-columns: repeat(2, 1fr); }
    .sf-grid-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .sf-sidebar { display: none; }
    .sf-main { margin-left: 0; }
    .sf-grid-2, .sf-grid-3, .sf-grid-4 { grid-template-columns: 1fr; }
}