:root {
  box-sizing: border-box;
  padding-top: env(safe-area-inset-top, 0px);
  padding-bottom: env(safe-area-inset-bottom, 0px);
  --bg: #eef1ea; --panel: #f7f8f3; --ink: #22301f; --muted: #5f6b58; --line: #cfd6c8;
  --accent: #6e4a8a; --sky1: #dfe9ee; --sky2: #f4f1e4;
  --ridge1: #8fa4b4; --ridge2: #a9bac6; --ridge3: #c3cfd6; --trunk: #5a4636;
  --frame: #e7e1d2; --frame-edge: #b9b1a0; --path: #d9cfb6; --mulch: #7a5a43;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #151a15; --panel: #1d241c; --ink: #e6eadf; --muted: #9aa693; --line: #2f3a2d;
    --accent: #c2a4dc; --sky1: #1d2a36; --sky2: #2a3128;
    --ridge1: #3a4b5a; --ridge2: #2e3d49; --ridge3: #24303a; --trunk: #3d2f25;
    --frame: #2b3129; --frame-edge: #4a5246; --path: #6e6552; --mulch: #4a3628;
  }
}
:root[data-theme="dark"] {
  --bg: #151a15; --panel: #1d241c; --ink: #e6eadf; --muted: #9aa693; --line: #2f3a2d;
  --accent: #c2a4dc; --sky1: #1d2a36; --sky2: #2a3128;
  --ridge1: #3a4b5a; --ridge2: #2e3d49; --ridge3: #24303a; --trunk: #3d2f25;
  --frame: #2b3129; --frame-edge: #4a5246; --path: #6e6552; --mulch: #4a3628;
}
html { scroll-padding-top: env(safe-area-inset-top, 0px); }
*, *::before, *::after { box-sizing: inherit; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: "Instrument Sans", "Helvetica Neue", Arial, sans-serif; font-size: 15px; line-height: 1.45; }
main { max-width: 1080px; margin: 0 auto; padding: 16px 14px 48px; }
a { color: var(--accent); }
.muted { color: var(--muted); }

h1 { font-family: "Fraunces", Georgia, "Times New Roman", serif; font-weight: 400; font-size: clamp(26px, 4.5vw, 44px); line-height: 1.05; letter-spacing: -0.01em; margin: 4px 0 8px; }
.lede { color: var(--muted); margin: 0 0 14px; max-width: 62ch; }

/* arrangement picker: a scrollable row of pills on phones, a wrapped row on desktop */
.tabs { display: flex; gap: 8px; overflow-x: auto; padding: 2px 2px 8px; margin: 0 -2px; scrollbar-width: none; }
.tabs::-webkit-scrollbar { display: none; }
.tab { flex: 0 0 auto; }
.tab[aria-pressed="true"] { background: var(--accent); color: var(--bg); border-color: var(--accent); }
.about { color: var(--muted); margin: 0 0 12px; max-width: 70ch; min-height: 1.45em; }

/* garden builder */
.builder { border: 1px solid var(--line); border-radius: 14px; padding: 12px 14px; margin: 16px 0 4px; background: var(--panel); }
.builder-head { display: flex; align-items: center; gap: 12px; margin-bottom: 8px; }
.builder-head .small { margin-left: auto; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { display: inline-flex; align-items: center; gap: 6px; border: 1px solid var(--line); border-radius: 999px; padding: 4px 6px 4px 10px; background: var(--bg); font-size: 14px; }
.chip.on { border-color: var(--accent); }
.chip .dot { width: 10px; height: 10px; border-radius: 50%; border: 1px solid rgba(0,0,0,.2); }
.chip b { font-weight: 600; min-width: 1.2em; text-align: center; }
.chip button { min-height: 28px; width: 28px; padding: 0; border-radius: 50%; line-height: 1; font-size: 16px; }
.chip-group { flex-basis: 100%; color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .06em; margin-top: 6px; }

.scene { overflow: hidden; border-radius: 14px; background: var(--panel); border: 1px solid var(--line); }
.scene svg { display: block; width: 100%; height: auto; }
.scene .empty { padding: 40px 20px; text-align: center; color: var(--muted); }
.plant { cursor: pointer; }
.plant .ring { fill: none; stroke: var(--accent); stroke-width: 2.5; stroke-dasharray: 6 5; opacity: 0; }
.plant.selected .ring, .plant:focus-visible .ring { opacity: 1; }
.plant:focus-visible { outline: none; }
.plant-label { font-family: "Instrument Sans", sans-serif; font-size: 12px; font-weight: 600; fill: var(--ink); opacity: 0; pointer-events: none; paint-order: stroke; stroke: var(--panel); stroke-width: 4px; stroke-linejoin: round; }
.plant.selected .plant-label { opacity: 1; }

/* scrubber: sticky on phones so it stays under your thumb while the ledger scrolls */
.scrub { margin: 14px 0 6px; background: var(--bg); }
@media (max-width: 640px) { .scrub { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 2; padding: 6px 0 4px; border-bottom: 1px solid var(--line); } }
.scrub-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.date { font-family: "Fraunces", Georgia, serif; font-size: clamp(28px, 5vw, 46px); font-weight: 600; line-height: 1; font-variant-numeric: tabular-nums; }
.date small { font-family: "Instrument Sans", sans-serif; font-size: 14px; font-weight: 400; color: var(--muted); margin-left: 10px; white-space: nowrap; }
.controls { display: flex; gap: 8px; }
button { font: inherit; font-weight: 500; color: var(--ink); background: var(--panel); border: 1px solid var(--line); border-radius: 999px; padding: 8px 16px; cursor: pointer; min-height: 40px; }
button.small { min-height: 30px; padding: 4px 12px; font-size: 13px; }
button:hover { border-color: var(--accent); }
button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
input[type=range] { width: 100%; margin: 12px 0 2px; accent-color: var(--accent); height: 36px; cursor: pointer; }
.ticks { position: relative; height: 18px; color: var(--muted); font-size: 13px; }
.ticks span { position: absolute; transform: translateX(-50%); }
.ticks span:first-child { transform: none; }
.ticks span:last-child { transform: translateX(-100%); }
.elev { display: flex; align-items: center; gap: 12px; margin-top: 4px; color: var(--muted); font-size: 13px; }
.elev > span { flex: 0 0 auto; white-space: nowrap; }
.elev output { color: var(--ink); font-weight: 500; }
.elev input[type=range] { margin: 0; height: 28px; }

/* ledger */
.ledger { margin-top: 22px; border-top: 1px solid var(--line); }
.row { display: grid; grid-template-columns: 22px minmax(140px, 1.3fr) minmax(120px, 2fr) 92px; gap: 12px; align-items: center; padding: 10px 6px; border-bottom: 1px solid var(--line); cursor: pointer; }
.row:hover { background: var(--panel); }
.row.selected { background: var(--panel); box-shadow: inset 3px 0 0 var(--accent); }
.row:focus-visible { outline: 2px solid var(--accent); outline-offset: -2px; }
.swatch { width: 18px; height: 18px; border-radius: 50%; border: 1px solid rgba(0,0,0,.15); transition: background .25s; }
.name { font-weight: 500; }
.count { color: var(--muted); font-weight: 400; }
.latin { color: var(--muted); font-style: italic; font-size: 13px; display: block; }
.track { position: relative; height: 10px; background: var(--line); border-radius: 5px; }
.track.none { background: transparent; }
.bar { position: absolute; top: 0; bottom: 0; border-radius: 5px; }
.now { position: absolute; top: -4px; bottom: -4px; width: 2px; background: var(--ink); opacity: .8; }
.state { text-align: right; color: var(--muted); font-size: 13px; }
.state.on { color: var(--ink); font-weight: 500; }
@media (max-width: 640px) {
  .row { grid-template-columns: 18px 1fr 76px; gap: 10px; row-gap: 6px; }
  .track { grid-column: 2 / 4; height: 8px; }
  .track.none { display: none; }
}
.foot, .credits { color: var(--muted); font-size: 13px; margin-top: 18px; max-width: 70ch; }
@media (prefers-reduced-motion: reduce) { .swatch { transition: none; } }