:root {
    --bg-color: #f8f9fa;
    --card-bg: #ffffff;
    --text-color: #333333;
    --border-color: #e0e0e0;
    --primary-color: #007bff;
    --manual-color: #fd7e14;
    --pid-color: #28a745;
    --accent-red: #dc3545;
}

body {
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    margin: 0;
    padding: 8px;
    overflow-x: hidden;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1240px;
    margin: 0 auto 5px;
}

h1 { font-size: 1.0rem; margin: 0; }

.dashboard {
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-width: 1240px;
    margin: 0 auto;
}

.top-row { display: flex; gap: 8px; align-items: stretch; }

.card {
    background: var(--card-bg);
    border-radius: 10px;
    padding: 10px;
    border: 1px solid var(--border-color);
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

/* 시뮬레이션 영역 비중 확대 */
.sim-section { flex: 1.8; }
.dashboard[data-mode="manual"] .sim-section { border-bottom: 3px solid var(--manual-color); }
.dashboard[data-mode="pid"] .sim-section { border-bottom: 3px solid var(--pid-color); }

.control-section { flex: 1; min-width: 320px; }

.canvas-container {
    position: relative;
    background: var(--bg-color);
    border-radius: 6px;
    border: 1px solid var(--border-color);
    margin-bottom: 5px;
    display: flex;
    justify-content: center;
    align-items: center;
}

canvas#simCanvas {
    max-width: 100%;
    height: auto;
}

#canvasAngleOverlay {
    position: absolute;
    bottom: 10px;
    left: 10px;
    background: rgba(0,0,0,0.7);
    color: #fff;
    padding: 2px 8px;
    border-radius: 4px;
    font-family: monospace;
    font-size: 0.9rem;
}

.status-bar { display: flex; justify-content: space-between; font-size: 0.8rem; font-weight: bold; background: rgba(128,128,128,0.05); padding: 6px 12px; border-radius: 6px; }

.tabs { display: flex; gap: 2px; margin-bottom: 5px; }
.tab-btn { flex: 1; border: 1px solid var(--border-color); padding: 5px; cursor: pointer; border-radius: 4px; background: var(--bg-color); font-size: 0.75rem; font-weight: bold; }
.tab-btn.active[data-tab="manual"] { background: var(--manual-color); color: white; border-color: var(--manual-color); }
.tab-btn.active[data-tab="pid"] { background: var(--pid-color); color: white; border-color: var(--pid-color); }

.tab-content { transition: opacity 0.3s; margin-top: 5px; }
.dashboard[data-mode="pid"] #manual-controls,
.dashboard[data-mode="manual"] #pid-controls {
    opacity: 0.2;
    pointer-events: none;
    filter: grayscale(1);
}

h3 { font-size: 0.85rem; margin: 0 0 5px 0; }
.control-group { margin-bottom: 4px; }
.control-group label { display: flex; justify-content: space-between; font-size: 0.7rem; font-weight: 600; margin-bottom: 2px; }

.preset-btns { display: grid; grid-template-columns: repeat(4, 1fr); gap: 3px; margin-top: 5px; }
.btn-preset { padding: 5px 0; font-size: 0.7rem; cursor: pointer; border-radius: 4px; border: 1px solid var(--border-color); background: var(--card-bg); color: var(--text-color); font-weight: bold; }

.action-btns { display: flex; gap: 4px; margin-top: 10px; }
.action-btns button { flex: 1; padding: 8px; border: none; border-radius: 6px; color: white; font-weight: bold; font-size: 0.8rem; cursor: pointer; }
.btn-reset { background: var(--accent-red); }
.btn-pause { background: #6c757d; }

/* 그래프 높이 살짝 축소하여 상단 영역 확보 */
.graph-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 6px; }
.graph-card { height: 135px; display: flex; flex-direction: column; }
.graph-label { font-size: 0.7rem; font-weight: bold; margin-bottom: 3px; opacity: 0.7; border-bottom: 1px solid var(--border-color); padding-bottom: 2px; }

.split-container { display: flex; flex: 1; gap: 4px; width: 100%; min-height: 0; }
.chart-wrap { flex: 1; position: relative; height: 100%; min-width: 0; }

input[type="range"] { width: 100%; height: 3px; }