/* ============================================================
   Roped Blocks Pulled — Moving Objects
   ============================================================ */

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

:root {
    --block1: #3b82f6;
    --block2: #10b981;
    --bg:     #f3f5f8;
    --panel:  #ffffff;
    --border: #d8dee6;
    --text:   #1f2a37;
    --muted:  #667085;
    --accent: #2563eb;
}

body {
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    min-height: 100vh;
    padding: 20px;
}

#app { max-width: 1400px; margin: 0 auto; }

header { margin-bottom: 16px; }
header h1 { font-size: 22px; font-weight: 700; letter-spacing: -0.01em; }
.subtitle { font-size: 13px; color: var(--muted); margin-top: 2px; }

#top-row {
    display: grid;
    grid-template-columns: 270px 1fr 220px;
    gap: 14px;
    margin-bottom: 14px;
}

aside, main {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 14px;
}

#stage { padding: 0; display: flex; flex-direction: column; overflow: hidden; }

#sim {
    flex: 1;
    width: 100%;
    min-height: 380px;
    display: block;
}

.control-group { margin-bottom: 16px; }
.control-group:last-child { margin-bottom: 0; }
.control-group h3 {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--muted);
    margin-bottom: 8px;
}
.control-group label {
    display: block;
    font-size: 12px;
    color: var(--text);
    margin: 8px 0 4px;
}
.control-group input[type=range] {
    width: 100%;
    accent-color: var(--accent);
}

.val-input {
    display: inline-block;
    width: 62px;
    padding: 1px 4px;
    font-family: 'SF Mono', 'Menlo', 'Consolas', monospace;
    font-size: 12px;
    font-weight: 600;
    font-variant-numeric: tabular-nums;
    color: var(--accent);
    background: transparent;
    border: 1px solid transparent;
    border-radius: 3px;
    text-align: right;
    vertical-align: baseline;
}
.val-input:hover { border-color: var(--border); }
.val-input:focus { outline: none; border-color: var(--accent); background: #fff; }
.val-input.out-of-range { background: #fee2e2; border-color: #fca5a5; color: #991b1b; }
.val-input::-webkit-outer-spin-button,
.val-input::-webkit-inline-spin-button { -webkit-appearance: none; margin: 0; }
.val-input[type=number] { -moz-appearance: textfield; appearance: textfield; }

#playback {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: #f8fafc;
    border-top: 1px solid var(--border);
}
#playback button {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 6px 12px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    color: var(--text);
    transition: background 0.1s, border-color 0.1s;
}
#playback button:hover { background: #eef2f7; border-color: #c0c9d4; }
#playback button#playPause {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
    min-width: 64px;
}
#playback button#playPause:hover { background: #1d4ed8; }

#time-display {
    margin-left: auto;
    font-family: 'SF Mono', 'Menlo', 'Consolas', monospace;
    font-size: 12px;
    color: var(--muted);
    font-variant-numeric: tabular-nums;
}

.readout { margin-bottom: 14px; }
.readout:last-child { margin-bottom: 0; }
.readout h3 {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--muted);
    margin-bottom: 8px;
}
.readout .row {
    display: grid;
    grid-template-columns: 80px 1fr auto;
    align-items: baseline;
    gap: 6px;
    padding: 3px 0;
    font-size: 13px;
    font-family: 'SF Mono', 'Menlo', 'Consolas', monospace;
    font-variant-numeric: tabular-nums;
}
.readout .lbl {
    color: var(--muted);
    font-family: -apple-system, BlinkMacSystemFont, sans-serif;
}
.readout .num { text-align: right; font-weight: 600; }
.readout .unit { color: var(--muted); font-size: 11px; }

.status {
    margin-top: 6px;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--muted);
    padding: 2px 6px;
    border-radius: 4px;
    background: #f1f5f9;
    display: inline-block;
}
.status.moving { color: #1e40af; background: #dbeafe; }

@media (max-width: 1000px) {
    #top-row { grid-template-columns: 1fr; }
}