:root {
    --bg: #121212;
    --surface: #1e1e1e;
    --primary: #bb86fc;
    --danger: #cf6679;
    --warning: #f39c12;
    --success: #4cd964;
    --text: #ffffff;
    --text-muted: #aaaaaa;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg);
    color: var(--text);
    padding: 1rem;
}

header {
    display: flex; justify-content: space-between; align-items: center; margin-bottom: 1.5rem;
}

select {
    background: var(--surface); color: var(--text); border: 1px solid #333; padding: 0.5rem; border-radius: 5px; font-size: 1rem;
}

.card {
    background-color: var(--surface); border-radius: 12px; padding: 1.5rem; margin-bottom: 1.5rem; box-shadow: 0 4px 6px rgba(0,0,0,0.3);
}

/* GPS Indicator Styles */
.status-indicator {
    display: flex; align-items: center; justify-content: center; gap: 0.5rem; margin-bottom: 1rem; font-size: 0.9rem; color: var(--text-muted);
}
.dot { width: 10px; height: 10px; border-radius: 50%; }
.dot.red { background-color: var(--danger); box-shadow: 0 0 8px var(--danger); }
.dot.yellow { background-color: var(--warning); box-shadow: 0 0 8px var(--warning); }
.dot.green { background-color: var(--success); box-shadow: 0 0 8px var(--success); }

.time-display {
    font-size: 3.5rem; font-weight: bold; text-align: center; margin-bottom: 1.5rem; font-variant-numeric: tabular-nums;
}

/* Updated to 3 columns to fit Average Pace */
.metrics-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.8rem; margin-bottom: 1.5rem;
}

.metric {
    display: flex; flex-direction: column; align-items: center; background: rgba(255,255,255,0.05); padding: 0.8rem; border-radius: 8px; text-align: center;
}

.metric .value { font-size: 1.4rem; font-weight: bold; }
.metric .label { font-size: 0.7rem; color: var(--text-muted); margin-top: 0.3rem; text-transform: uppercase; }

.controls { display: flex; gap: 0.8rem; }

.btn {
    flex: 1; padding: 1rem; font-size: 1.1rem; border: none; border-radius: 8px; font-weight: bold; cursor: pointer; color: #fff; transition: opacity 0.2s;
}

.btn:active { opacity: 0.8; }
.btn.primary { background-color: var(--primary); color: #000; }
.btn.warning { background-color: var(--warning); color: #000; }
.btn.danger { background-color: var(--danger); }
.hidden { display: none !important; }

.history-item { background: rgba(255,255,255,0.05); margin-bottom: 0.5rem; border-radius: 8px; overflow: hidden; }
.history-header { padding: 1rem; display: flex; justify-content: space-between; cursor: pointer; }
.history-details { display: none; padding: 1rem; border-top: 1px solid #333; background: rgba(0,0,0,0.2); }
.history-details.active { display: block; }
.chart-container { width: 100%; height: 200px; margin-bottom: 1rem; }
.action-buttons { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.btn-small { padding: 0.5rem 1rem; font-size: 0.9rem; border: none; border-radius: 4px; cursor: pointer; background: #333; color: white; }
.btn-small.danger { background: var(--danger); }