/* install + share pages: the same paper, ink and buttons as the tree, as a plain scrolling page */
:root {
  --plane: #E6EAE7; --ink: #1C2930; --ink2: #4E5D62; --ink3: #7F8D88; --card: #FCFDFB; --line: #BFCAC4;
  --read: #D9E0DC; --ghost: #B4BFB8; --op: #EDC33F; --focus: #2F55D4; --ok: #3E8A5B; --bad: #9B3B2E;
  --sans: "Golos Text", system-ui, -apple-system, "Segoe UI", sans-serif;
  color-scheme: light;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; min-height: 100vh; background: var(--plane); color: var(--ink); font: 400 15px/1.5 var(--sans); -webkit-font-smoothing: antialiased; }
a { color: inherit; text-underline-offset: 3px; text-decoration-color: var(--line); }
a:hover { text-decoration-color: var(--ink3); }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }
[hidden] { display: none !important; }
kbd { font: 500 12px/1 var(--sans); padding: 3px 6px 2px; border-radius: 5px; border: 1px solid var(--line); background: var(--card); color: var(--ink2); }

.top { display: flex; align-items: center; gap: 10px; padding: 14px 16px; padding-top: max(14px, env(safe-area-inset-top)); max-width: 980px; margin: 0 auto; }
.mark { display: inline-flex; align-items: center; gap: 8px; text-decoration: none; font-weight: 600; font-size: 15px; color: var(--ink); }
main { max-width: 980px; margin: 0 auto; padding: 18px 16px 56px; }
h1 { font: 500 28px/1.2 var(--sans); letter-spacing: -.015em; margin: 0 0 10px; text-wrap: balance; }
.lede { color: var(--ink2); font-size: 16.5px; max-width: 36em; margin: 0 0 26px; text-wrap: pretty; }
.cols { display: grid; grid-template-columns: minmax(0, 1fr) minmax(260px, 340px); gap: 40px; align-items: start; }
.panel { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 18px 20px 20px; }
.panel h2 { font: 600 15px/1.3 var(--sans); margin: 0 0 12px; }
.muted { color: var(--ink3); font-size: 13.5px; }
.note { color: var(--ink2); font-size: 14px; margin: 16px 0 0; max-width: 36em; }

.btn { height: 40px; padding: 0 16px; border-radius: 10px; border: 1px solid var(--line); background: var(--card); color: var(--ink);
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; font: 500 14.5px/1 var(--sans); text-decoration: none; cursor: pointer; white-space: nowrap; }
.btn:hover { border-color: var(--ink3); }
.btn.primary { background: var(--ink); border-color: var(--ink); color: var(--card); }
.btn.primary:hover { background: #2A3A42; }
.btn.ghost { background: transparent; }
.row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }

.drag { display: inline-flex; align-items: center; gap: 10px; height: 52px; padding: 0 22px 0 16px; border-radius: 12px;
  background: var(--ink); color: var(--card); font: 600 17px/1 var(--sans); text-decoration: none; cursor: grab;
  box-shadow: 0 1px 0 rgba(28, 41, 48, .05), 0 14px 30px -14px rgba(28, 41, 48, .55); }
.drag:active { cursor: grabbing; }
.drag svg { color: var(--op); }
.hint { color: var(--ink2); font-size: 14px; margin: 12px 0 0; }
.alt { color: var(--ink3); font-size: 13.5px; margin: 8px 0 0; }
.alt button { font: inherit; color: var(--ink2); background: none; border: 0; padding: 0; cursor: pointer; text-decoration: underline; text-underline-offset: 3px; text-decoration-color: var(--line); }
.alt textarea { display: block; width: 100%; max-width: 34em; height: 64px; margin-top: 10px; background: var(--card); color: var(--ink2); border: 1px solid var(--line); border-radius: 8px; font: 11px/1.3 ui-monospace, Menlo, monospace; padding: 8px; }

ol.steps { margin: 0; padding: 0; list-style: none; counter-reset: s; display: grid; gap: 12px; }
ol.steps li { counter-increment: s; display: grid; grid-template-columns: 28px 1fr; gap: 10px; align-items: baseline; color: var(--ink2); }
ol.steps li::before { content: counter(s); width: 24px; height: 24px; border-radius: 7px; border: 1px solid var(--line); background: var(--plane); display: grid; place-items: center; font-size: 12.5px; font-weight: 600; color: var(--ink); }
ol.steps b { color: var(--ink); font-weight: 600; }
.callout { border-left: 4px solid var(--op); background: var(--card); border-radius: 10px; padding: 12px 14px; margin: 0 0 22px; max-width: 36em; font-size: 14.5px; }
.callout a { word-break: break-all; }

.phone-only { display: none; }
@media (hover: none) and (pointer: coarse), (max-width: 640px) { .phone-only { display: block; } .desk-only { display: none; } }
@media (max-width: 820px) { .cols { grid-template-columns: 1fr; gap: 24px; } h1 { font-size: 24px; } }

/* share page */
.share { max-width: 520px; margin: 0 auto; text-align: center; padding-top: 6vh; }
.share h1 { font-size: 26px; }
.state { display: grid; justify-items: center; gap: 14px; }
.dots { display: inline-flex; gap: 5px; }
.dots i { width: 8px; height: 8px; border-radius: 2px; background: var(--ink3); animation: blink 1.1s infinite; }
.dots i:nth-child(2) { animation-delay: .15s; } .dots i:nth-child(3) { animation-delay: .3s; }
@keyframes blink { 0%, 100% { opacity: .2; } 40% { opacity: .9; } }
.qr { width: 228px; height: 228px; background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 14px; display: grid; place-items: center; }
.qr img { width: 100%; height: 100%; display: block; image-rendering: pixelated; }
.link-box { display: flex; align-items: center; gap: 8px; width: 100%; max-width: 440px; background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 6px 6px 6px 14px; }
.link-box input { flex: 1; min-width: 0; border: 0; background: transparent; font: 500 15.5px/1 var(--sans); color: var(--ink); outline: none; }
.paste { width: 100%; max-width: 440px; height: 96px; border: 1.5px dashed var(--ghost); border-radius: 12px; background: rgba(252, 253, 251, .5); font: 13px/1.4 var(--sans); color: var(--ink2); padding: 12px; resize: none; text-align: center; }
.err { color: var(--bad); font-size: 14.5px; max-width: 30em; }
.fine { color: var(--ink3); font-size: 13px; max-width: 30em; margin: 4px 0 0; text-wrap: pretty; }
@media (prefers-reduced-motion: reduce) { .dots i { animation: none; opacity: .6; } }