:root {
    --bg-base: #0f172a; --bg-surface: #1e293b; --border: #334155;
    --text-main: #f8fafc; --text-muted: #94a3b8;
    --accent: #3b82f6; --accent-glow: rgba(59, 130, 246, 0.4);
    --buy-color: #10b981; --sell-color: #ef4444; --ai-color: #8b5cf6;
    --promo-grad: linear-gradient(135deg, #f59e0b 0%, #ea580c 100%);
    --font-sans: 'Inter', sans-serif; --font-mono: 'JetBrains Mono', monospace;
}

/* Animations */
.fade-in { animation: fadeIn 0.6s ease-out both; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

.terminal-wrapper { font-family: var(--font-sans); background-color: var(--bg-base); color: var(--text-main); border-radius: 12px; padding: 20px; box-sizing: border-box; border: 1px solid var(--border); box-shadow: 0 25px 50px -12px rgba(0,0,0,0.5); width: 100%; max-width: 1500px; margin: 0 auto; text-align: left; }
.terminal-wrapper * { box-sizing: border-box; }
.terminal-header { display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid var(--border); padding-bottom: 15px; margin-bottom: 20px; }
.brand { display: flex; align-items: center; gap: 12px; }
.pulse-icon { color: var(--buy-color); animation: pulse 2s infinite; }
@keyframes pulse { 0% { opacity: 1; text-shadow: 0 0 10px var(--buy-color); } 50% { opacity: 0.4; text-shadow: none; } 100% { opacity: 1; text-shadow: 0 0 10px var(--buy-color); } }
.brand h1 { margin: 0; font-size: 20px; font-weight: 700; letter-spacing: 1px; color: var(--text-main); }
.version-tag { background: rgba(59, 130, 246, 0.2); color: var(--accent); font-size: 11px; padding: 2px 6px; border-radius: 4px; vertical-align: top; margin-left: 5px; font-family: var(--font-mono); }

.api-credits-box { background: rgba(0,0,0,0.2); border: 1px solid var(--border); padding: 8px 12px; border-radius: 8px; width: 200px; cursor: pointer; transition: 0.2s; }
.api-credits-box:hover { border-color: var(--accent); }
.credit-info { display: flex; justify-content: space-between; font-size: 12px; font-weight: 600; color: var(--text-muted); margin-bottom: 5px; text-transform: uppercase; }
.credit-count { color: var(--text-main); font-family: var(--font-mono); }
.credit-bar-bg { background: var(--bg-surface); height: 6px; border-radius: 3px; overflow: hidden; }
.credit-bar-fill { background: var(--accent); height: 100%; width: 100%; transition: 0.3s; box-shadow: 0 0 10px var(--accent-glow); }

/* 3-Column Grid */
.terminal-grid-3col { display: grid; grid-template-columns: 280px 1fr 320px; gap: 20px; }
.col-panel { display: flex; flex-direction: column; gap: 20px; }
.center-col { overflow: hidden; }

.control-box, .signals-box, .chart-section, .data-card, .backtest-section { background: var(--bg-surface); border: 1px solid var(--border); border-radius: 10px; padding: 15px; }

h3 { margin: 0 0 15px 0; font-size: 14px; text-transform: uppercase; color: var(--text-muted); letter-spacing: 0.5px; display: flex; align-items: center; gap: 8px; }
.input-group { margin-bottom: 12px; }
.input-group label { display: block; font-size: 12px; color: var(--text-muted); margin-bottom: 5px; text-transform: uppercase; }
.terminal-wrapper select, .terminal-wrapper input { width: 100%; background: var(--bg-base); border: 1px solid var(--border); color: var(--text-main); padding: 10px; border-radius: 6px; font-family: var(--font-mono); font-size: 13px; outline: none; transition: 0.2s; }
.terminal-wrapper select:focus, .terminal-wrapper input:focus { border-color: var(--accent); box-shadow: inset 0 0 0 1px var(--accent); }

.btn-primary, .btn-upgrade, .btn-promo { width: 100%; background: var(--accent); color: white; border: none; padding: 12px; border-radius: 6px; font-weight: 600; font-size: 14px; cursor: pointer; transition: 0.2s; text-transform: uppercase; letter-spacing: 1px; display: flex; justify-content: center; align-items: center; gap: 8px; text-decoration: none; }
.btn-primary:hover { background: #2563eb; box-shadow: 0 0 15px var(--accent-glow); }
.btn-sm { padding: 6px 12px; font-size: 12px; border-radius: 4px; border: none; cursor: pointer; font-weight: 600; }
.btn-ai { background: rgba(139, 92, 246, 0.1); color: #c4b5fd; border: 1px solid rgba(139, 92, 246, 0.3); transition: 0.2s; }
.btn-ai:hover { background: rgba(139, 92, 246, 0.3); border-color: var(--ai-color); color: #fff; }

/* Signals */
.signals-box { flex-grow: 1; display: flex; flex-direction: column; height: 600px; }
.signals-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; }
.signals-header h3 { margin: 0; }
.signals-list { overflow-y: auto; flex-grow: 1; padding-right: 5px; }
.signals-list::-webkit-scrollbar { width: 4px; }
.signals-list::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }
.sig-group { margin-bottom: 15px; }
.sig-title { font-size: 11px; font-weight: bold; text-transform: uppercase; margin-bottom: 8px; border-bottom: 1px solid var(--border); padding-bottom: 4px; }
.sig-title.bull { color: var(--buy-color); border-color: rgba(16, 185, 129, 0.2); }
.sig-title.bear { color: var(--sell-color); border-color: rgba(239, 68, 68, 0.2); }

.sig-item { display: flex; justify-content: space-between; align-items: center; padding: 8px 10px; background: var(--bg-base); border: 1px solid var(--border); border-radius: 6px; margin-bottom: 6px; cursor: pointer; transition: 0.2s; }
.sig-item:hover { transform: translateX(3px); }
.sig-item.bull-item { background: rgba(16, 185, 129, 0.05); border-left: 3px solid var(--buy-color); }
.sig-item.bear-item { background: rgba(239, 68, 68, 0.05); border-left: 3px solid var(--sell-color); }

.info-btn { color: var(--text-muted); margin-right: 12px; font-size: 16px; transition: 0.2s; cursor: pointer; }
.info-btn:hover { color: var(--accent); transform: scale(1.1); }

.sig-tkr { font-family: var(--font-mono); font-weight: 700; font-size: 14px; }
.sig-chg { font-size: 12px; font-family: var(--font-mono); font-weight: bold;}
.chg-pos { color: var(--buy-color); }
.chg-neg { color: var(--sell-color); }

/* Charts */
.chart-top-bar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 15px; }
.active-ticker-info { display: flex; align-items: center; gap: 15px; }
.active-ticker-info input { width: 120px; font-size: 16px; font-weight: bold; background: transparent; border: none; border-bottom: 2px solid var(--border); border-radius: 0; padding: 5px 0; color: var(--text-main); }
.active-ticker-info input:focus { border-color: var(--accent); box-shadow: none; }
.t-name { color: var(--text-muted); font-size: 14px; }
.compact-select { width: auto !important; padding: 6px 10px !important; }
.tv-chart { width: 100%; height: 400px; }

/* Backtester */
.bt-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; }
.bt-input { display: flex; align-items: center; gap: 8px; }
.bt-input label { font-size: 11px; text-transform: uppercase; color: var(--text-muted); }
.bt-input input { width: 80px; padding: 4px 8px; font-size: 12px; }
.tv-profit-chart { width: 100%; height: 150px; border-radius: 6px; overflow: hidden; border: 1px solid var(--bg-base); }
.bt-stats { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 10px; margin-top: 15px; }
.bt-stat-box { background: var(--bg-base); padding: 10px; border-radius: 6px; border: 1px solid var(--border); text-align: center; }
.bt-stat-box span { display: block; font-size: 10px; text-transform: uppercase; color: var(--text-muted); margin-bottom: 5px; }
.bt-stat-box strong { font-family: var(--font-mono); font-size: 14px; }
.bt-stat-box.highlight { border-color: var(--accent); background: rgba(59, 130, 246, 0.1); }
.profit-pos { color: var(--buy-color); }
.profit-neg { color: var(--sell-color); }

/* Quant Infographics */
.quant-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.q-box { background: var(--bg-base); padding: 12px; border-radius: 8px; border: 1px solid var(--border); display: flex; flex-direction: column; justify-content: center; align-items: center; text-align: center;}
.q-box.full { grid-column: 1 / -1; flex-direction: row; justify-content: space-between; }
.q-label { font-size: 11px; color: var(--text-muted); text-transform: uppercase; margin-bottom: 4px; }
.q-val { font-family: var(--font-mono); font-weight: bold; font-size: 15px; }
.val-pos { color: var(--buy-color); }
.val-neg { color: var(--sell-color); }

/* AI Card */
.ai-card { border-color: rgba(139, 92, 246, 0.3); background: linear-gradient(180deg, rgba(30, 41, 59, 1) 0%, rgba(15, 23, 42, 1) 100%); }
.ai-card-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 15px; }
.ai-card-header h3 { margin: 0; color: #c4b5fd; }
.ai-score-box { display: flex; align-items: center; gap: 15px; margin-bottom: 15px; padding: 15px; background: rgba(0,0,0,0.3); border-radius: 8px; border: 1px solid var(--border); }
.ai-score-circle { width: 50px; height: 50px; border-radius: 50%; display: flex; justify-content: center; align-items: center; font-size: 18px; font-weight: bold; font-family: var(--font-mono); border: 3px solid var(--border); flex-shrink: 0; }
.ai-score-circle.bull { border-color: var(--buy-color); color: var(--buy-color); box-shadow: 0 0 15px rgba(16,185,129,0.2); }
.ai-score-circle.bear { border-color: var(--sell-color); color: var(--sell-color); box-shadow: 0 0 15px rgba(239,68,68,0.2); }
.ai-score-circle.neutral { border-color: var(--text-muted); color: var(--text-muted); }
.ai-verdict { font-size: 16px; font-weight: bold; text-transform: uppercase; letter-spacing: 1px; }
.ai-verdict.bull { color: var(--buy-color); }
.ai-verdict.bear { color: var(--sell-color); }
.ai-points { font-size: 12px; color: var(--text-main); line-height: 1.5; margin-bottom: 15px; }
.ai-points ul { padding-left: 15px; margin: 5px 0 10px 0; }
.ai-points li { margin-bottom: 4px; }
.ai-points .bull-hdr { color: var(--buy-color); font-weight: bold; font-size: 11px; text-transform: uppercase; }
.ai-points .bear-hdr { color: var(--sell-color); font-weight: bold; font-size: 11px; text-transform: uppercase; }

/* Promo Banner */
.promo-banner { background: var(--promo-grad); padding: 20px; border-radius: 10px; color: white; text-align: center; position: relative; overflow: hidden; box-shadow: 0 10px 20px rgba(234, 88, 12, 0.3); }
.promo-banner::before { content: ''; position: absolute; top: -50%; right: -50%; width: 200px; height: 200px; background: radial-gradient(circle, rgba(255,255,255,0.2) 0%, transparent 70%); border-radius: 50%; }
.promo-icon { font-size: 30px; margin-bottom: 10px; color: #fef3c7; }
.promo-content h4 { margin: 0 0 5px 0; font-size: 16px; font-weight: 700; }
.promo-content p { font-size: 12px; margin: 0 0 15px 0; opacity: 0.9; line-height: 1.4; }
.btn-promo { background: white; color: #ea580c; border: none; }
.btn-promo:hover { background: #fef3c7; color: #c2410c; transform: translateY(-2px); box-shadow: 0 5px 15px rgba(0,0,0,0.2); }

/* Modals & Tables */
.modal-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.8); backdrop-filter: blur(5px); z-index: 9999; display: flex; justify-content: center; align-items: center; }
.modal-box { background: var(--bg-surface); border: 1px solid var(--border); border-radius: 12px; padding: 30px; width: 90%; max-width: 450px; text-align: center; position: relative; box-shadow: 0 25px 50px -12px rgba(0,0,0,1); }
.close-modal { position: absolute; top: 15px; right: 20px; font-size: 24px; color: var(--text-muted); cursor: pointer; line-height: 1; }
.close-modal:hover { color: white; }
.fin-table { width: 100%; border-collapse: collapse; font-size: 13px; margin-top: 15px; }
.fin-table th, .fin-table td { padding: 10px 8px; border-bottom: 1px solid var(--border); text-align: right; color: var(--text-main); }
.fin-table th { color: var(--text-muted); font-weight: 600; background: rgba(0,0,0,0.2); }
.fin-table th:first-child, .fin-table td:first-child { text-align: left; color: var(--text-muted); }

.loader { width: 30px; height: 30px; border: 3px solid var(--border); border-top-color: var(--accent); border-radius: 50%; animation: spin 1s linear infinite; margin: 20px auto; }
.loader-sm { width: 20px; height: 20px; border: 2px solid var(--border); border-top-color: var(--accent); border-radius: 50%; animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.empty-state { text-align: center; color: var(--text-muted); font-size: 12px; padding: 20px; border: 1px dashed var(--border); border-radius: 8px; }

@media (max-width: 1100px) { .terminal-grid-3col { grid-template-columns: 1fr; } }