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

:root {
    --bg-primary: #000000;
    --bg-secondary: #0a0a0a;
    --bg-card: #111111;
    --bg-elevated: #161616;
    --bg-hover: #1a1a1a;
    --border: #1e1e1e;
    --border-light: #2a2a2a;
    --text-primary: #fafafa;
    --text-secondary: #a1a1a1;
    --text-muted: #666666;
    --text-dim: #444444;
    --green: #00e599;
    --green-dim: #00e59915;
    --red: #ff4d4d;
    --red-dim: #ff4d4d15;
    --blue: #3b82f6;
    --blue-dim: #3b82f615;
    --yellow: #eab308;
    --yellow-dim: #eab30815;
    --purple: #a855f7;
    --purple-dim: #a855f715;
    --font-sans: 'DM Sans', -apple-system, sans-serif;
    --font-mono: 'Geist Mono', 'SF Mono', monospace;
}

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

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    height: 100vh;
    overflow: hidden;
}

/* HEADER */
.header {
    height: 48px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    position: sticky;
    top: 0;
    z-index: 50;
}

.header-logo {
    display: flex;
    align-items: center;
    gap: 8px;
}

.header-logo-mark {
    width: 22px;
    height: 22px;
    border-radius: 6px;
    background: linear-gradient(135deg, var(--green), var(--blue));
    display: flex;
    align-items: center;
    justify-content: center;
}

.header-logo-text {
    font-size: 14px;
    font-weight: 700;
    letter-spacing: -0.5px;
    color: var(--text-primary);
}

.header-stats {
    display: flex;
    align-items: center;
    gap: 24px;
    font-family: var(--font-mono);
    font-size: 12px;
}

.header-stat-label {
    color: var(--text-muted);
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-right: 4px;
}

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

.status-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--text-dim);
}

.status-dot.active {
    background: var(--green);
    box-shadow: 0 0 6px var(--green);
    animation: pulse-glow 2s infinite;
}

@keyframes pulse-glow {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

.status-label {
    font-size: 10px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 500;
}

/* LAYOUT */
.layout {
    display: flex;
    height: calc(100vh - 48px);
}

/* SIDEBAR */
.sidebar {
    width: 180px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    padding: 12px 8px;
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
}

.sidebar-section-label {
    font-size: 9px;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    color: var(--text-dim);
    font-weight: 600;
    padding: 8px 10px 4px;
}

.nav-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
    text-align: left;
    padding: 7px 10px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
    border: none;
    background: none;
    cursor: pointer;
    transition: all 0.15s ease;
}

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

.nav-btn.active {
    background: var(--bg-elevated);
    color: var(--text-primary);
    border: 1px solid var(--border-light);
}

.nav-btn svg {
    width: 14px;
    height: 14px;
    opacity: 0.5;
    flex-shrink: 0;
}

.nav-btn.active svg { opacity: 1; }

.sidebar-footer {
    margin-top: auto;
    padding-top: 12px;
    border-top: 1px solid var(--border);
}

.engine-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    width: 100%;
    padding: 7px;
    border-radius: 6px;
    font-size: 11px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s ease;
    border: 1px solid;
}

.engine-btn-start {
    composes: engine-btn;
    background: var(--green-dim);
    color: var(--green);
    border-color: #00e59930;
}
.engine-btn-start:hover { background: #00e59925; }

.engine-btn-stop {
    composes: engine-btn;
    background: var(--red-dim);
    color: var(--red);
    border-color: #ff4d4d30;
}

.sidebar-meta {
    text-align: center;
    font-family: var(--font-mono);
    font-size: 9px;
    color: var(--text-dim);
    margin-top: 8px;
}

/* MAIN */
.main-content {
    flex: 1;
    padding: 16px 20px;
    overflow-y: auto;
    background: var(--bg-primary);
}

/* CARDS */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 14px 16px;
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 8px;
}

.card-label {
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--text-muted);
    font-weight: 600;
}

.card-value {
    font-family: var(--font-mono);
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.5px;
    color: var(--text-primary);
}

.card-sub {
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--text-dim);
    margin-top: 2px;
}

.card-icon {
    width: 28px;
    height: 28px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.card-icon svg { width: 14px; height: 14px; }

/* GRID HELPERS */
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.grid-chart { display: grid; grid-template-columns: 2fr 1fr; gap: 14px; }
.mb-14 { margin-bottom: 14px; }

/* PERIOD BUTTONS */
.period-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 10px;
    font-weight: 500;
    padding: 3px 8px;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.15s;
}

.period-btn:hover { color: var(--text-secondary); }
.period-btn.active {
    background: var(--bg-elevated);
    color: var(--text-primary);
    border: 1px solid var(--border-light);
}

/* TABLE */
table { width: 100%; border-collapse: collapse; }
thead tr { border-bottom: 1px solid var(--border); }
th {
    text-align: left;
    padding: 10px 14px;
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.6px;
    color: var(--text-dim);
    font-weight: 600;
}
td { padding: 8px 14px; font-size: 12px; }
tbody tr { border-bottom: 1px solid var(--border); }
tbody tr:hover { background: var(--bg-hover); }
tbody tr:last-child { border-bottom: none; }

/* TAGS */
.strategy-tag {
    display: inline-block;
    padding: 2px 7px;
    border-radius: 4px;
    font-size: 10px;
    font-weight: 600;
    font-family: var(--font-mono);
}

.strategy-tag.arbitrage { background: var(--green-dim); color: var(--green); }
.strategy-tag.value { background: var(--purple-dim); color: var(--purple); }
.strategy-tag.momentum { background: var(--yellow-dim); color: var(--yellow); }
.strategy-tag.time_decay { background: var(--blue-dim); color: var(--blue); }
.strategy-tag.market_making { background: #ec489915; color: #ec4899; }

.status-badge {
    display: inline-block;
    padding: 2px 7px;
    border-radius: 4px;
    font-size: 10px;
    font-weight: 600;
    font-family: var(--font-mono);
}
.status-badge.FILLED { background: var(--green-dim); color: var(--green); }
.status-badge.PENDING { background: var(--yellow-dim); color: var(--yellow); }
.status-badge.CANCELLED { background: #66666615; color: var(--text-muted); }

/* COLORS */
.pnl-positive { color: var(--green); }
.pnl-negative { color: var(--red); }
.text-profit { color: var(--green); }
.text-loss { color: var(--red); }
.text-muted { color: var(--text-muted); }
.text-dim { color: var(--text-dim); }
.font-mono { font-family: var(--font-mono); }

/* PROGRESS BAR */
.progress-track {
    height: 4px;
    background: var(--bg-elevated);
    border-radius: 2px;
    overflow: hidden;
    margin-top: 8px;
}
.progress-fill {
    height: 100%;
    border-radius: 2px;
    transition: width 0.3s ease;
}

/* LINK */
.link {
    font-size: 10px;
    color: var(--text-muted);
    cursor: pointer;
    transition: color 0.15s;
    font-weight: 500;
}
.link:hover { color: var(--text-primary); }

/* SCROLLBAR */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }
::-webkit-scrollbar-thumb:hover { background: var(--border-light); }

/* HIDDEN */
.hidden { display: none !important; }

/* SELECT */
select {
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    font-family: var(--font-sans);
    border-radius: 6px;
    padding: 6px 10px;
    font-size: 11px;
    cursor: pointer;
    outline: none;
}
select:focus { border-color: var(--border-light); }

/* EMPTY STATE */
.empty-state {
    text-align: center;
    padding: 24px;
    color: var(--text-dim);
    font-size: 12px;
}

/* MOBILE MENU TOGGLE */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px;
}

.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    z-index: 40;
}

/* ============ RESPONSIVE ============ */
@media (max-width: 768px) {
    .mobile-menu-btn { display: block; }

    .header { padding: 0 12px; gap: 8px; }
    .header-logo-text { font-size: 13px; }

    .header-stats {
        gap: 10px;
        font-size: 10px;
    }
    .header-stat-label { display: none; }
    #cycle-counter { display: none; }

    .sidebar {
        position: fixed;
        left: -200px;
        top: 48px;
        bottom: 0;
        z-index: 45;
        width: 180px;
        transition: left 0.2s ease;
        background: var(--bg-secondary);
    }
    .sidebar.open { left: 0; }
    .sidebar-overlay.open { display: block; }

    .layout { display: block; }

    .main-content {
        padding: 12px;
        max-height: calc(100vh - 48px);
        overflow-y: auto;
    }

    .grid-4 { grid-template-columns: repeat(2, 1fr); gap: 8px; }
    .grid-3 { grid-template-columns: 1fr; gap: 8px; }
    .grid-2 { grid-template-columns: 1fr; gap: 10px; }
    .grid-chart { grid-template-columns: 1fr; gap: 10px; }

    .card { padding: 10px 12px; }
    .card-value { font-size: 18px; }

    /* Tables scroll horizontally on mobile */
    .card { overflow-x: auto; -webkit-overflow-scrolling: touch; }
    table { font-size: 11px; min-width: 500px; }
    th { padding: 8px 8px; font-size: 9px; white-space: nowrap; }
    td { padding: 6px 8px; font-size: 11px; white-space: nowrap; }

    .mb-14 { margin-bottom: 10px; }
}

@media (max-width: 420px) {
    .grid-4 { grid-template-columns: 1fr 1fr; gap: 6px; }
    .card-value { font-size: 16px; }
    .card-icon { display: none; }
    .header-stats { gap: 6px; }
}