/* Tree Swing Labs site. Fonts are self-hosted (SIL Open Font License). */
@font-face { font-family: "Fredoka"; font-weight: 600; font-display: swap; src: url("/fonts/fredoka-latin-600-normal.woff2") format("woff2"); }
@font-face { font-family: "Fredoka"; font-weight: 700; font-display: swap; src: url("/fonts/fredoka-latin-700-normal.woff2") format("woff2"); }
@font-face { font-family: "Nunito"; font-weight: 400; font-display: swap; src: url("/fonts/nunito-latin-400-normal.woff2") format("woff2"); }
@font-face { font-family: "Nunito"; font-weight: 600; font-display: swap; src: url("/fonts/nunito-latin-600-normal.woff2") format("woff2"); }
@font-face { font-family: "Nunito"; font-weight: 700; font-display: swap; src: url("/fonts/nunito-latin-700-normal.woff2") format("woff2"); }
@font-face { font-family: "Nunito"; font-weight: 800; font-display: swap; src: url("/fonts/nunito-latin-800-normal.woff2") format("woff2"); }

:root {
  --bg: #EDF6FC; --surface: #FFFFFF; --surface2: #DCEDF9; --ink: #2B3D57; --muted: #5A6E90; --line: #CBE0F0;
  --accent: #2F8FD6; --accent-ink: #FFFFFF; --accent-soft: #D5EAF9;
  --green: #3E9C6F; --green-soft: #DDF2E6; --sun: #D98B3C; --sun-soft: #FBE8D4;
  --pink: #D4598F; --pink-soft: #FBDDEA; --purple: #8470C9; --purple-soft: #E6E0F7;
  --bad: #C2414B;
  --radius: 18px; --radius-s: 12px;
  --shadow: 0 2px 12px rgba(43, 61, 87, 0.08);
  --max: 1080px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 400 17px/1.6 "Nunito", system-ui, -apple-system, "Segoe UI", sans-serif; }
img, svg { display: block; max-width: 100%; height: auto; }
.hero-art img { margin: 0 auto; }
a { color: var(--accent); text-underline-offset: 3px; }
a:hover { color: #1F6FAD; }
h1, h2, h3 { font-family: "Fredoka", "Nunito", system-ui, sans-serif; font-weight: 600; line-height: 1.15; margin: 0 0 0.5em; }
h1 { font-size: clamp(2.1rem, 5vw, 3.3rem); letter-spacing: -0.01em; }
h2 { font-size: clamp(1.6rem, 3.4vw, 2.2rem); }
h3 { font-size: 1.2rem; }
p { margin: 0 0 1em; }
.wrap { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 22px; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--ink); color: #fff; padding: 8px 14px; border-radius: 8px; z-index: 10; }
.skip:focus { left: 12px; }

/* Header */
.site-header { background: rgba(237, 246, 252, 0.92); backdrop-filter: saturate(140%) blur(8px); position: sticky; top: 0; z-index: 5; border-bottom: 1px solid var(--line); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 66px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-family: "Fredoka", sans-serif; font-weight: 600; font-size: 1.25rem; white-space: nowrap; flex-shrink: 0; }
.brand img { flex-shrink: 0; height: 44px; width: auto; }
.nav { display: flex; gap: 6px; flex-wrap: nowrap; }
.nav a { white-space: nowrap; }
[id] { scroll-margin-top: 84px; }
.nav a { color: var(--ink); text-decoration: none; font-weight: 700; padding: 8px 12px; border-radius: 999px; }
.nav a:hover, .nav a[aria-current="page"] { background: var(--surface2); }
.nav a.lang-switch { margin-left: 4px; border: 2px solid var(--line); color: var(--accent); padding: 6px 12px; }
.nav a.lang-switch:hover { border-color: var(--accent); background: var(--accent-soft); }
.lang-switch .short { display: none; }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; font: 800 1rem/1 "Nunito", sans-serif; text-decoration: none; border: 0; cursor: pointer; padding: 15px 24px; border-radius: 999px; background: var(--accent); color: var(--accent-ink); box-shadow: 0 4px 0 #1F6FAD; transition: transform .08s ease, box-shadow .08s ease; }
.btn:hover { color: #fff; background: #2A84C7; }
.btn:active { transform: translateY(2px); box-shadow: 0 2px 0 #1F6FAD; }
.btn.green { background: var(--green); box-shadow: 0 4px 0 #2C7653; }
.btn.green:hover { background: #378C63; }
.btn.ghost { background: transparent; color: var(--ink); box-shadow: inset 0 0 0 2px var(--line); }
.btn.ghost:hover { background: var(--surface); }
.btn[disabled] { opacity: .65; cursor: progress; }

/* Hero */
.hero { padding: 64px 0 40px; }
.hero .wrap { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 40px; align-items: center; }
.hero p.lead { font-size: 1.2rem; color: var(--muted); max-width: 34em; }
.hero .actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 22px; }
.eyebrow { display: inline-block; font-weight: 800; font-size: .85rem; letter-spacing: .06em; text-transform: uppercase; color: var(--green); background: var(--green-soft); padding: 6px 12px; border-radius: 999px; margin-bottom: 16px; }
.eyebrow.blue { color: #1F6FAD; background: var(--accent-soft); }
.hero-art { background: var(--surface); border-radius: 28px; box-shadow: var(--shadow); padding: 28px; }

/* Sections and cards */
section { padding: 44px 0; }
.section-head { max-width: 42em; margin-bottom: 26px; }
.section-head p { color: var(--muted); font-size: 1.08rem; }
.grid { display: grid; gap: 18px; }
.grid.three { grid-template-columns: repeat(3, 1fr); }
.grid.four { grid-template-columns: repeat(4, 1fr); }
.card { background: var(--surface); border-radius: var(--radius); box-shadow: var(--shadow); padding: 24px; border: 1px solid #E3EEF8; }
.card p { color: var(--muted); margin: 0; }
.card .icon { width: 46px; height: 46px; border-radius: 14px; display: grid; place-items: center; margin-bottom: 14px; }
.card .icon svg { width: 26px; height: 26px; }
.tint-blue { background: var(--accent-soft); color: var(--accent); }
.tint-green { background: var(--green-soft); color: var(--green); }
.tint-sun { background: var(--sun-soft); color: var(--sun); }
.tint-pink { background: var(--pink-soft); color: var(--pink); }
.tint-purple { background: var(--purple-soft); color: var(--purple); }

.feature-app { display: grid; grid-template-columns: auto 1fr auto; gap: 24px; align-items: center; }
.feature-app .mark { width: 92px; height: 92px; }
.feature-app h3 { font-size: 1.6rem; margin-bottom: 6px; }

.note { background: var(--surface2); border-radius: var(--radius-s); padding: 16px 18px; color: var(--ink); font-size: .98rem; }

/* Waitlist */
.waitlist { background: var(--surface); border-radius: 28px; box-shadow: var(--shadow); padding: 34px; display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 34px; }
.waitlist .why p { color: var(--muted); }
form .field { margin-bottom: 16px; }
label, .label { display: block; font-weight: 800; margin-bottom: 6px; }
.hint { font-weight: 400; color: var(--muted); font-size: .92rem; }
input[type="email"], select, textarea { width: 100%; font: 400 1rem/1.4 "Nunito", sans-serif; color: var(--ink); background: #F7FBFE; border: 2px solid var(--line); border-radius: var(--radius-s); padding: 13px 14px; }
textarea { min-height: 96px; resize: vertical; }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft); }
.choices { display: flex; gap: 10px; flex-wrap: wrap; }
.choice { position: relative; }
.choice input { position: absolute; opacity: 0; inset: 0; cursor: pointer; }
.choice span { display: inline-block; padding: 10px 16px; border-radius: 999px; border: 2px solid var(--line); font-weight: 700; background: #F7FBFE; }
.choice input:checked + span { border-color: var(--accent); background: var(--accent-soft); color: #1F6FAD; }
.choice input:focus-visible + span { box-shadow: 0 0 0 4px var(--accent-soft); }
.consent { display: grid; grid-template-columns: 22px 1fr; gap: 10px; align-items: start; font-size: .95rem; }
.consent input { width: 20px; height: 20px; margin: 3px 0 0; accent-color: var(--accent); }
.hp { position: absolute; left: -5000px; width: 1px; height: 1px; overflow: hidden; }
.form-status { margin-top: 14px; font-weight: 700; min-height: 1.6em; }
.form-status.ok { color: var(--green); }
.form-status.err { color: var(--bad); }
.success { text-align: center; padding: 20px 6px; }
.success h3 { font-size: 1.5rem; }

/* Prose pages */
.prose { background: var(--surface); border-radius: var(--radius); box-shadow: var(--shadow); padding: 34px; max-width: 760px; }
.prose h2 { font-size: 1.35rem; margin-top: 1.4em; }
.prose ul { padding-left: 1.2em; }
.prose li { margin-bottom: .4em; }
.muted { color: var(--muted); }

/* Footer */
.site-footer { margin-top: 30px; padding: 30px 0 40px; border-top: 1px solid var(--line); color: var(--muted); font-size: .95rem; }
.site-footer .wrap { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.site-footer a { color: var(--muted); }

@media (max-width: 860px) {
  .hero .wrap, .waitlist { grid-template-columns: 1fr; }
  .grid.three, .grid.four { grid-template-columns: 1fr 1fr; }
  .feature-app { grid-template-columns: auto 1fr; }
  .feature-app .btn { grid-column: 1 / -1; justify-self: start; }
  .hero { padding-top: 40px; }
}
@media (max-width: 560px) {
  body { font-size: 16px; }
  .grid.three, .grid.four { grid-template-columns: 1fr; }
  .waitlist, .prose { padding: 22px; border-radius: 22px; }
  .site-header .wrap { gap: 8px; padding: 0 14px; min-height: 60px; }
  .brand { gap: 8px; font-size: 1.05rem; }
  .brand img { height: 36px; }
  .nav { gap: 0; }
  .nav a { padding: 7px 8px; font-size: .9rem; }
  .nav a.nav-secondary { display: none; }
  .nav a.lang-switch { padding: 5px 10px; margin-left: 2px; }
  .lang-switch .full { display: none; }
  .lang-switch .short { display: inline; }
}
@media (max-width: 380px) {
  .site-header .wrap { padding: 0 10px; gap: 6px; }
  .brand { gap: 6px; font-size: .95rem; }
  .brand img { height: 30px; }
  .nav a { padding: 6px 6px; font-size: .85rem; }
  .nav a.lang-switch { padding: 4px 8px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .btn { transition: none; } }