@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=IBM+Plex+Mono:wght@400;500;600;700&display=swap');

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

:root {
    --bg-dark: #08090d;
    --bg-card: #0f1117;
    --bg-card-hover: #161924;
    --bg-elevated: #1a1d29;
    --border: #1e2231;
    --border-light: #2a2e3f;
    --text-primary: #e8ecf4;
    --text-secondary: #8b95a8;
    --text-muted: #555e72;
    --green: #00d68f;
    --green-bg: rgba(0, 214, 143, 0.08);
    --green-border: rgba(0, 214, 143, 0.18);
    --red: #ff4757;
    --red-bg: rgba(255, 71, 87, 0.08);
    --red-border: rgba(255, 71, 87, 0.18);
    --blue: #4c7cf5;
    --blue-bg: rgba(76, 124, 245, 0.08);
    --blue-border: rgba(76, 124, 245, 0.18);
    --yellow: #ffc107;
    --yellow-bg: rgba(255, 193, 7, 0.08);
    --yellow-border: rgba(255, 193, 7, 0.18);
    --purple: #a855f7;
    --accent: #4c7cf5;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'IBM Plex Mono', 'SF Mono', 'Consolas', monospace;
    --radius: 10px;
    --radius-sm: 6px;
}

body {
    font-family: var(--font);
    background: var(--bg-dark);
    color: var(--text-primary);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    padding-bottom: 260px;
}

::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--border-light); }

/* ── Header ── */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 24px;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(12px);
}

.header h1 {
    font-size: 18px;
    font-weight: 800;
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, #e8ecf4 0%, #8b95a8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.header .status-badge {
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    font-family: var(--font-mono);
}

.status-running { background: var(--green-bg); color: var(--green); border: 1px solid var(--green-border); }
.status-stopped { background: rgba(85, 94, 114, 0.15); color: var(--text-muted); border: 1px solid rgba(85, 94, 114, 0.2); }
.status-paused { background: var(--yellow-bg); color: var(--yellow); border: 1px solid var(--yellow-border); }
.status-killed { background: var(--red-bg); color: var(--red); border: 1px solid var(--red-border); }
.status-cooldown { background: var(--yellow-bg); color: var(--yellow); border: 1px solid var(--yellow-border); }

.controls { display: flex; gap: 6px; }

.controls button {
    padding: 5px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 13px;
    font-weight: 600;
    font-family: var(--font);
    transition: all 0.15s;
}

.controls button:hover { background: var(--bg-elevated); color: var(--text-primary); }
.btn-start { border-color: var(--green-border) !important; color: var(--green) !important; }
.btn-start:hover { background: var(--green-bg) !important; }
.btn-stop { border-color: var(--red-border) !important; color: var(--red) !important; }
.btn-stop:hover { background: var(--red-bg) !important; }
.btn-kill { background: var(--red) !important; color: white !important; border-color: var(--red) !important; }
.btn-kill:hover { opacity: 0.85; }
.btn-exit { background: var(--red-bg); color: var(--red); border: 1px solid var(--red-border); border-radius: 4px; padding: 3px 10px; font-size: 11px; font-weight: 700; cursor: pointer; transition: all .15s; font-family: var(--font-mono); letter-spacing: 0.5px; }
.btn-exit:hover { background: var(--red); color: white; }

/* ── Tab Bar ── */
.tab-bar {
    display: flex;
    align-items: center;
    gap: 2px;
    padding: 6px 24px;
    border-bottom: 1px solid var(--border);
    background: var(--bg-card);
}

.tab-btn {
    padding: 6px 14px;
    border: none;
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 13px;
    font-weight: 600;
    font-family: var(--font);
    transition: all 0.15s;
    position: relative;
}

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

.tab-settings-btn { color: var(--text-muted) !important; font-size: 12px; }
.tab-settings-btn:hover { color: var(--text-primary) !important; }

.tab-content { display: none; }
.tab-content.active { display: block; }

/* ── Container Grid ── */
.container {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    padding: 16px 24px;
}

/* ── Cards ── */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px 18px;
    transition: border-color 0.2s;
}

.card:hover { border-color: var(--border-light); }

.card h3 {
    font-size: 12px;
    text-transform: uppercase;
    color: var(--text-muted);
    letter-spacing: 0.8px;
    margin-bottom: 10px;
    font-weight: 700;
}

.pnl-value {
    font-size: 32px;
    font-weight: 800;
    font-family: var(--font-mono);
    letter-spacing: -1px;
}
.pnl-positive { color: var(--green); }
.pnl-negative { color: var(--red); }
.pnl-zero { color: var(--text-muted); }

.pnl-breakdown {
    display: flex;
    gap: 16px;
    margin-top: 8px;
    font-size: 13px;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

.stat-value {
    font-size: 28px;
    font-weight: 800;
    font-family: var(--font-mono);
    letter-spacing: -0.5px;
}
.stat-label {
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 500;
}

.full-width { grid-column: 1 / -1; }
.half-width { grid-column: span 2; }

/* ── Tables ── */
.table-wrapper {
    overflow-x: auto;
    max-height: 400px;
    overflow-y: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

thead th {
    text-align: left;
    padding: 8px 12px;
    border-bottom: 1px solid var(--border);
    color: var(--text-muted);
    font-weight: 700;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    position: sticky;
    top: 0;
    background: var(--bg-card);
}

tbody td {
    padding: 8px 12px;
    border-bottom: 1px solid rgba(30, 34, 49, 0.5);
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 12px;
}

tbody tr { transition: background 0.1s; }
tbody tr:hover { background: var(--bg-card-hover); }

.signal-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 700;
    font-family: var(--font-mono);
    letter-spacing: 0.3px;
}

.signal-ENTRY_LONG, .signal-SCALE_IN { background: var(--green-bg); color: var(--green); border: 1px solid var(--green-border); }
.signal-ENTRY_SHORT, .signal-SCALE_OUT { background: var(--red-bg); color: var(--red); border: 1px solid var(--red-border); }
.signal-EXIT { background: var(--yellow-bg); color: var(--yellow); border: 1px solid var(--yellow-border); }
.signal-NO_SIGNAL, .signal-HOLD { background: rgba(85,94,114,0.12); color: var(--text-muted); }

.confidence-bar {
    width: 56px;
    height: 4px;
    background: rgba(255,255,255,0.06);
    border-radius: 2px;
    overflow: hidden;
    display: inline-block;
    vertical-align: middle;
    margin-left: 4px;
}

.confidence-fill {
    height: 100%;
    border-radius: 2px;
    transition: width 0.3s;
}

.connection-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    display: inline-block;
    margin-right: 5px;
}

.dot-connected { background: var(--green); box-shadow: 0 0 6px var(--green); }
.dot-disconnected { background: var(--red); }

.mode-badge {
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    font-family: var(--font-mono);
}

.mode-paper { background: var(--blue-bg); color: var(--blue); border: 1px solid var(--blue-border); }
.mode-live { background: var(--red-bg); color: var(--red); border: 1px solid var(--red-border); }

/* ── Options Chain ── */
.chain-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
    flex-wrap: wrap;
    gap: 12px;
}

.chain-controls {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}

.chain-controls select {
    padding: 5px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-dark);
    color: var(--text-primary);
    font-size: 13px;
    font-family: var(--font);
    cursor: pointer;
}

.chain-meta {
    display: flex;
    gap: 16px;
    font-size: 13px;
    color: var(--text-secondary);
    font-family: var(--font-mono);
}

.chain-meta strong { color: var(--text-primary); }

#chain-table thead th { text-align: center; }
#chain-table tbody td { text-align: center; font-variant-numeric: tabular-nums; }

.chain-strike-col { background: rgba(255, 193, 7, 0.05) !important; }

.chain-atm-row td { background: rgba(255, 193, 7, 0.04) !important; font-weight: 600; }
.chain-atm-row td.chain-strike-cell { background: rgba(255, 193, 7, 0.12) !important; color: var(--yellow); font-weight: 700; }

.chain-oi-positive { color: var(--green); }
.chain-oi-negative { color: var(--red); }

/* ── Charts ── */
.chart-container {
    position: relative;
    height: 300px;
}

.chart-container canvas {
    width: 100% !important;
    height: 100% !important;
}

.bw-row {
    display: flex;
    justify-content: space-between;
    padding: 9px 0;
    border-bottom: 1px solid rgba(30, 34, 49, 0.5);
    font-size: 13px;
    color: var(--text-secondary);
}

.bw-row:last-child { border-bottom: none; }
.bw-row span:last-child { font-weight: 700; color: var(--text-primary); font-family: var(--font-mono); }

/* ── Settings Panel ── */
.settings-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: 1000;
}

.settings-overlay.open { display: block; }

.settings-panel {
    position: fixed;
    top: 0;
    right: -480px;
    width: 440px;
    height: 100vh;
    background: var(--bg-dark);
    border-left: 1px solid var(--border);
    overflow-y: auto;
    transition: right 0.3s ease;
    z-index: 1001;
}

.settings-overlay.open .settings-panel { right: 0; }

.settings-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 24px;
    border-bottom: 1px solid var(--border);
}

.settings-header h2 { font-size: 16px; font-weight: 800; letter-spacing: -0.3px; }

.settings-close {
    width: 30px;
    height: 30px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--text-muted);
    font-size: 18px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s;
}

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

.settings-tabs {
    display: flex;
    gap: 2px;
    padding: 10px 24px;
    border-bottom: 1px solid var(--border);
}

.settings-tab {
    padding: 5px 12px;
    border: none;
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 13px;
    font-weight: 600;
    font-family: var(--font);
    transition: all 0.15s;
}

.settings-tab:hover { color: var(--text-secondary); }
.settings-tab.active { color: var(--text-primary); background: var(--bg-elevated); }

.settings-content { display: none; padding: 18px 24px; }
.settings-content.active { display: block; }

.form-group { margin-bottom: 14px; }

.form-group label {
    display: block;
    font-size: 11px;
    color: var(--text-muted);
    margin-bottom: 5px;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    font-weight: 700;
}

.form-group input[type="number"],
.form-group input[type="text"],
.form-group input[type="password"],
.form-group input[type="time"] {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    color: var(--text-primary);
    font-size: 13px;
    font-family: var(--font-mono);
    transition: border-color 0.15s;
}

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

.toggle-group {
    display: flex;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.toggle-btn {
    flex: 1;
    padding: 8px 16px;
    border: none;
    background: var(--bg-card);
    color: var(--text-muted);
    cursor: pointer;
    font-size: 13px;
    font-weight: 700;
    font-family: var(--font);
    transition: all 0.15s;
}

.toggle-btn.active-paper { background: var(--blue-bg); color: var(--blue); }
.toggle-btn.active-live { background: var(--red-bg); color: var(--red); }

.btn-save {
    width: 100%;
    padding: 9px 16px;
    border: none;
    border-radius: var(--radius-sm);
    background: var(--blue);
    color: white;
    cursor: pointer;
    font-size: 13px;
    font-weight: 700;
    font-family: var(--font);
    transition: opacity 0.15s;
    margin-top: 8px;
}

.btn-save:hover { opacity: 0.85; }

.btn-relogin {
    width: 100%;
    padding: 8px 16px;
    border: 1px solid var(--yellow-border);
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--yellow);
    cursor: pointer;
    font-size: 13px;
    font-weight: 700;
    font-family: var(--font);
    transition: all 0.15s;
    margin-bottom: 18px;
}

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

.save-status { text-align: center; font-size: 13px; margin-top: 8px; min-height: 18px; }
.save-status.success { color: var(--green); }
.save-status.error { color: var(--red); }

.auth-status-display {
    font-size: 13px;
    margin-bottom: 12px;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    border: 1px solid var(--border);
}

.auth-connected { color: var(--green); }
.auth-disconnected { color: var(--red); }

/* ── Live Logs Panel ── */
.log-panel {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--bg-dark);
    border-top: 1px solid var(--border);
    z-index: 100;
    display: flex;
    flex-direction: column;
}

.log-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 5px 24px;
    cursor: pointer;
    user-select: none;
    font-size: 11px;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-family: var(--font-mono);
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    min-height: 32px;
}

.log-header:hover { color: var(--text-secondary); }

.log-controls { display: flex; align-items: center; gap: 3px; }

.log-level-btn {
    padding: 2px 7px;
    border: 1px solid transparent;
    border-radius: 3px;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 11px;
    font-weight: 600;
    font-family: var(--font-mono);
    transition: all 0.1s;
}

.log-level-btn:hover { color: var(--text-primary); }
.log-level-btn.active { color: var(--text-primary); border-color: var(--border); background: var(--bg-elevated); }

.log-toggle {
    width: 24px;
    height: 24px;
    border: 1px solid var(--border);
    border-radius: 3px;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-left: 6px;
    transition: all 0.15s;
}

.log-toggle:hover { color: var(--text-primary); background: var(--bg-elevated); }

.log-body {
    max-height: 200px;
    overflow-y: auto;
    padding: 2px 0;
    font-family: var(--font-mono);
    font-size: 12px;
    line-height: 1.5;
}

.log-panel.collapsed .log-body { display: none; }
.log-panel.collapsed .log-toggle { transform: rotate(180deg); }

.log-line {
    padding: 1px 24px;
    white-space: nowrap;
    color: var(--text-muted);
}

.log-line:hover { background: rgba(255, 255, 255, 0.015); }

.log-line .log-time { color: var(--text-muted); margin-right: 8px; }
.log-line .log-lvl { font-weight: 700; margin-right: 8px; display: inline-block; width: 52px; }
.log-line .log-mod { color: var(--blue); margin-right: 8px; }
.log-line .log-msg { color: var(--text-secondary); }

.log-line.log-ERROR .log-lvl { color: var(--red); }
.log-line.log-ERROR .log-msg { color: var(--red); }
.log-line.log-WARNING .log-lvl { color: var(--yellow); }
.log-line.log-WARNING .log-msg { color: var(--yellow); }
.log-line.log-DEBUG .log-lvl { color: var(--text-muted); }
.log-line.log-DEBUG .log-msg { color: var(--text-muted); }

/* ── Responsive ── */
@media (max-width: 1200px) {
    .container { grid-template-columns: 1fr 1fr; }
    .half-width { grid-column: span 1; }
}

@media (max-width: 768px) {
    .container { grid-template-columns: 1fr; padding: 12px 16px; }
    .settings-panel { width: 100%; right: -100%; }
    .half-width { grid-column: span 1; }
    .header { padding: 10px 16px; }
    .tab-bar { padding: 6px 16px; overflow-x: auto; }
}