:root {
    --bg: #0f1117;
    --surface: #1a1d27;
    --surface2: #242733;
    --border: #2e3141;
    --text: #e1e4ed;
    --text-dim: #8b8fa3;
    --primary: #4f8ff7;
    --success: #34d399;
    --danger: #f87171;
    --warning: #fbbf24;
    --paper: #a78bfa;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    background: var(--bg);
    color: var(--text);
    font-size: 14px;
    line-height: 1.5;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Nav */
nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 24px;
    height: 48px;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}
.nav-left, .nav-right { display: flex; align-items: center; gap: 16px; }
.nav-brand { font-weight: 700; color: var(--primary); font-size: 15px; }
nav a { color: var(--text-dim); font-size: 13px; }
nav a:hover { color: var(--text); text-decoration: none; }
.nav-user { color: var(--text-dim); font-size: 12px; }

/* Main */
main { max-width: 1200px; margin: 0 auto; padding: 24px; }

/* Page Header */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}
.page-header h1 { font-size: 22px; font-weight: 600; }

/* Flash */
.flash-container { margin-bottom: 16px; }
.flash {
    padding: 10px 16px;
    border-radius: 6px;
    font-size: 13px;
    margin-bottom: 8px;
}
.flash-success { background: rgba(52, 211, 153, 0.15); border: 1px solid rgba(52, 211, 153, 0.3); }
.flash-error { background: rgba(248, 113, 113, 0.15); border: 1px solid rgba(248, 113, 113, 0.3); }

/* Buttons */
.btn {
    display: inline-block;
    padding: 8px 16px;
    border-radius: 6px;
    border: 1px solid var(--border);
    background: var(--surface2);
    color: var(--text);
    font-size: 13px;
    cursor: pointer;
    transition: background 0.15s;
}
.btn:hover { background: var(--border); text-decoration: none; }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: #3d7de0; }
.btn-success { background: var(--success); border-color: var(--success); color: #000; }
.btn-danger { background: var(--danger); border-color: var(--danger); color: #000; }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn-full { width: 100%; }

/* Stats */
.summary-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; margin-bottom: 24px; }
.stat-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
}
.stat-label { font-size: 11px; text-transform: uppercase; letter-spacing: 0.5px; color: var(--text-dim); margin-bottom: 4px; }
.stat-value { font-size: 22px; font-weight: 700; }
.positive { color: var(--success); }
.negative { color: var(--danger); }

/* Bot Grid */
.bot-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 12px; margin-bottom: 24px; }
.bot-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
}
.bot-running { border-color: rgba(52, 211, 153, 0.4); }
.bot-header { display: flex; justify-content: space-between; margin-bottom: 8px; }
.bot-card h3 { font-size: 16px; margin-bottom: 4px; }
.bot-meta { font-size: 12px; color: var(--text-dim); margin-bottom: 12px; }
.bot-type { font-size: 11px; font-weight: 600; padding: 2px 6px; background: var(--surface2); border-radius: 4px; }
.bot-stats { display: flex; gap: 16px; margin-bottom: 12px; font-size: 13px; }
.stat-sm-label { font-size: 11px; color: var(--text-dim); display: block; }
.bot-actions { display: flex; gap: 8px; }

/* Badges */
.badge {
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    padding: 2px 6px;
    border-radius: 4px;
    letter-spacing: 0.3px;
}
.badge-paper { background: rgba(167, 139, 250, 0.2); color: var(--paper); }
.badge-live { background: rgba(248, 113, 113, 0.2); color: var(--danger); }
.badge-running { background: rgba(52, 211, 153, 0.2); color: var(--success); }
.badge-stopped { background: rgba(139, 143, 163, 0.2); color: var(--text-dim); }
.badge-info { background: rgba(79, 143, 247, 0.2); color: var(--primary); }
.badge-warn { background: rgba(251, 191, 36, 0.2); color: var(--warning); }
.badge-error { background: rgba(248, 113, 113, 0.2); color: var(--danger); }
.badge-buy { background: rgba(52, 211, 153, 0.2); color: var(--success); }
.badge-sell { background: rgba(248, 113, 113, 0.2); color: var(--danger); }

/* Tables */
.log-table-wrap { overflow-x: auto; margin-bottom: 24px; }
.log-table { width: 100%; border-collapse: collapse; font-size: 12px; }
.log-table th {
    text-align: left;
    padding: 8px 12px;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    color: var(--text-dim);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}
.log-table td {
    padding: 6px 12px;
    border-bottom: 1px solid var(--border);
    vertical-align: top;
}
.log-table tr:hover { background: var(--surface); }
.log-time { white-space: nowrap; color: var(--text-dim); font-family: monospace; font-size: 11px; }
td.empty { text-align: center; color: var(--text-dim); padding: 24px; }

/* Forms */
.form-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 24px;
}
.form-card h3 { margin-bottom: 12px; font-size: 15px; }
.form-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; margin-bottom: 12px; }
.field label { display: block; font-size: 12px; color: var(--text-dim); margin-bottom: 4px; }
.field input, .field select {
    width: 100%;
    padding: 8px 10px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    font-size: 13px;
}
.field input:focus, .field select:focus { outline: none; border-color: var(--primary); }
.cb-label { display: flex !important; align-items: center; gap: 6px; padding-top: 20px; cursor: pointer; }
.hint { font-size: 12px; color: var(--text-dim); margin-bottom: 12px; }
.hint code { background: var(--bg); padding: 2px 6px; border-radius: 4px; font-size: 11px; }
.warn-box {
    background: rgba(251, 191, 36, 0.1);
    border: 1px solid rgba(251, 191, 36, 0.3);
    border-radius: 6px;
    padding: 10px 14px;
    font-size: 12px;
    color: var(--warning);
    margin-bottom: 12px;
}
.section-title { font-size: 16px; font-weight: 600; margin: 24px 0 12px; }
.config-section { margin-top: 12px; padding-top: 12px; border-top: 1px solid var(--border); }

/* State Panel */
.state-panel, .config-panel {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
    margin-bottom: 16px;
}
.state-panel h3, .config-panel h3 { font-size: 14px; margin-bottom: 10px; color: var(--text-dim); }
.state-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 8px; font-size: 13px; }

/* Login */
.login-wrap { display: flex; justify-content: center; align-items: center; min-height: 100vh; }
.login-box {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 32px;
    width: 360px;
}
.login-box h2 { margin-bottom: 20px; text-align: center; }

/* Empty State */
.empty-state {
    text-align: center;
    padding: 48px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-dim);
}
.empty-state p { margin-bottom: 16px; }

/* Help Toggle */
.nav-help {
    cursor: pointer;
    font-size: 12px;
    font-weight: 700;
    width: 20px;
    height: 20px;
    line-height: 20px;
    text-align: center;
    border-radius: 50%;
    background: var(--surface2);
    border: 1px solid var(--border);
    color: var(--text-dim);
    transition: all 0.15s;
    user-select: none;
}
.nav-help:hover, .nav-tick:hover { border-color: var(--primary); color: var(--primary); }
.nav-help.active { background: var(--primary); border-color: var(--primary); color: #fff; }
.nav-tick {
    cursor: pointer;
    font-size: 10px;
    width: 20px;
    height: 20px;
    line-height: 20px;
    text-align: center;
    border-radius: 50%;
    background: var(--surface2);
    border: 1px solid var(--border);
    color: var(--text-dim);
    transition: all 0.15s;
    user-select: none;
}
.nav-tick.active { background: var(--success); border-color: var(--success); color: #000; }

/* Tick Modal */
.tick-overlay {
    position: fixed; inset: 0; z-index: 200;
    background: rgba(0,0,0,0.7);
    display: flex; justify-content: center; align-items: center;
}
.tick-modal {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 20px;
    width: 600px;
    max-height: 80vh;
    overflow-y: auto;
}
.tick-modal h3 { font-size: 15px; margin-bottom: 12px; }
.tick-output {
    font-size: 12px;
    font-family: monospace;
    white-space: pre-wrap;
    color: var(--text-dim);
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 12px;
    max-height: 60vh;
    overflow-y: auto;
}

/* Tooltips */
.field { position: relative; }
.tip-icon {
    display: none;
    cursor: help;
    font-size: 10px;
    font-weight: 700;
    font-style: normal;
    width: 14px;
    height: 14px;
    line-height: 14px;
    text-align: center;
    border-radius: 50%;
    background: var(--surface2);
    border: 1px solid var(--border);
    color: var(--text-dim);
    margin-left: 4px;
    vertical-align: middle;
    position: relative;
}
body.tips-on .tip-icon { display: inline-block; }
.tip-icon:hover .tip-text { display: block; }
.tip-text {
    display: none;
    position: absolute;
    left: 50%;
    top: 20px;
    transform: translateX(-50%);
    z-index: 300;
    width: 220px;
    font-size: 11px;
    font-weight: 400;
    color: var(--text);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 8px 10px;
    line-height: 1.4;
    box-shadow: 0 4px 12px rgba(0,0,0,0.4);
    pointer-events: none;
}
.tip-text::before {
    content: '';
    position: absolute;
    top: -5px;
    left: 50%;
    transform: translateX(-50%);
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-bottom: 5px solid var(--border);
}