/* BEM Form — public fill page. Dark slate, warm-white text, one accent (sky or emerald) with soft glow. Mobile first. */
:root {
  --bg: #0F172A; --card: #1E293B; --field: #172033; --line: rgba(255, 255, 255, .10); --line-strong: rgba(255, 255, 255, .20);
  --text: #F8FAFC; --muted: #94A3B8; --err: #FB7185; --ok: #34D399;
  --accent: #38BDF8; --accent-ink: #04202E; --glow: rgba(56, 189, 248, .35); --accent-soft: rgba(56, 189, 248, .12);
  --radius: 14px;
  color-scheme: dark;
}
[data-accent="emerald"] { --accent: #34D399; --accent-ink: #052E1F; --glow: rgba(52, 211, 153, .35); --accent-soft: rgba(52, 211, 153, .12); }
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; min-height: 100vh; color: var(--text); background: var(--bg);
  background-image: radial-gradient(900px 420px at 50% -80px, var(--accent-soft), transparent 70%);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
}
.wrap { max-width: 680px; margin: 0 auto; padding: 28px 16px 48px; }
h1, h2, p { margin: 0; }

/* ---- header ---- */
.hero { text-align: center; padding: 8px 0 26px; }
.hero .logo { width: 84px; height: 84px; border-radius: 50%; box-shadow: 0 0 0 2px var(--line-strong), 0 10px 40px var(--glow); }
.eyebrow { margin-top: 16px; font-size: 12px; letter-spacing: .18em; text-transform: uppercase; color: var(--accent); font-weight: 600; }
.hero h1 { margin-top: 8px; font-size: clamp(1.7rem, 6vw, 2.4rem); line-height: 1.2; font-weight: 800; letter-spacing: -.01em; }
.badges { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin-top: 16px; }
.badge { display: inline-flex; align-items: center; gap: 7px; padding: 6px 12px; border-radius: 999px; background: var(--card); border: 1px solid var(--line); color: var(--text); font-size: 13.5px; }
.badge svg { width: 15px; height: 15px; color: var(--accent); flex: none; }
.welcome { margin: 18px auto 0; max-width: 520px; color: var(--muted); white-space: pre-wrap; }

/* ---- cards ---- */
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; margin-bottom: 16px; box-shadow: 0 1px 0 rgba(255, 255, 255, .04) inset; }
.card-head { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; }
.step { flex: none; width: 28px; height: 28px; border-radius: 50%; display: grid; place-items: center; font-size: 13px; font-weight: 700; color: var(--accent-ink); background: var(--accent); }
.card-head h2 { font-size: 1.05rem; font-weight: 700; }
.card-head p { color: var(--muted); font-size: 13.5px; }
.q { padding: 2px 0 18px; }
.q:last-child { padding-bottom: 0; }
.q + .q { border-top: 1px solid var(--line); padding-top: 18px; }
.lbl { display: block; font-size: 14.5px; font-weight: 600; margin-bottom: 4px; }
.req::after { content: " *"; color: var(--accent); }
.help { color: var(--muted); font-size: 13px; margin-bottom: 8px; }

/* ---- fields ---- */
input[type=text], input[type=email], input[type=number], input[type=date], input[type=tel], select, textarea {
  width: 100%; min-height: 48px; padding: 12px 14px; margin-top: 6px; color: var(--text); background: var(--field);
  border: 1px solid var(--line-strong); border-radius: 10px; font: inherit; font-size: 16px; /* 16px stops iOS zoom */
  transition: border-color .15s, box-shadow .15s;
}
textarea { min-height: 104px; resize: vertical; }
input::placeholder, textarea::placeholder { color: #64748B; }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft), 0 0 18px -2px var(--glow); }
select { appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%), linear-gradient(135deg, var(--muted) 50%, transparent 50%); background-position: calc(100% - 20px) 21px, calc(100% - 14px) 21px; background-size: 6px 6px; background-repeat: no-repeat; padding-right: 40px; }
input[type=date] { color-scheme: dark; }

/* choice cards (single + multiple) */
.opts { display: grid; gap: 10px; margin-top: 8px; }
@media (min-width: 560px) { .opts.cols { grid-template-columns: 1fr 1fr; } }
.opt { position: relative; display: flex; align-items: center; gap: 12px; min-height: 52px; padding: 12px 14px; cursor: pointer; background: var(--field); border: 1px solid var(--line-strong); border-radius: 12px; transition: border-color .15s, background .15s, box-shadow .15s; }
.opt:hover { border-color: var(--accent); }
.opt input { position: absolute; opacity: 0; inset: 0; width: 100%; height: 100%; margin: 0; cursor: pointer; }
.mark { flex: none; width: 22px; height: 22px; border: 2px solid var(--muted); display: grid; place-items: center; transition: all .15s; }
.opt .radio { border-radius: 50%; } .opt .box { border-radius: 6px; }
.mark::after { content: ""; width: 10px; height: 10px; border-radius: 50%; background: var(--accent-ink); transform: scale(0); transition: transform .15s; }
.opt .box::after { width: 6px; height: 11px; border-radius: 0; background: none; border: solid var(--accent-ink); border-width: 0 2.5px 2.5px 0; transform: rotate(45deg) scale(0); margin-top: -2px; }
.opt:has(input:checked) .mark.box::after { transform: rotate(45deg) scale(1); }
.opt:has(input:checked) { border-color: var(--accent); background: var(--accent-soft); box-shadow: 0 0 0 1px var(--accent), 0 0 20px -6px var(--glow); }
.opt:has(input:checked) .mark { background: var(--accent); border-color: var(--accent); }
.opt:has(input:checked) .mark::after { transform: scale(1); }
.opt:has(input:focus-visible) { box-shadow: 0 0 0 3px var(--accent-soft), 0 0 0 1px var(--accent); }
.opt span.t { font-size: 15.5px; }

/* toggle */
.toggle-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 52px; }
.toggle-row .text { flex: 1; }
.toggle-row .lbl { margin: 0; }
.switch { position: relative; flex: none; width: 54px; height: 32px; cursor: pointer; }
.switch input { position: absolute; opacity: 0; inset: 0; width: 100%; height: 100%; margin: 0; cursor: pointer; }
.track { position: absolute; inset: 0; border-radius: 999px; background: #334155; border: 1px solid var(--line-strong); transition: all .2s; }
.track::after { content: ""; position: absolute; top: 3px; left: 3px; width: 24px; height: 24px; border-radius: 50%; background: #E2E8F0; transition: transform .2s, background .2s; }
.switch input:checked + .track { background: var(--accent); border-color: var(--accent); box-shadow: 0 0 16px -2px var(--glow); }
.switch input:checked + .track::after { transform: translateX(22px); background: var(--accent-ink); }
.switch input:focus-visible + .track { outline: 2px solid var(--accent); outline-offset: 3px; }
.state { color: var(--muted); font-size: 13px; min-width: 2em; text-align: right; }

/* rating */
.stars { display: flex; gap: 8px; margin-top: 8px; flex-wrap: wrap; }
.stars label { position: relative; }
.stars input { position: absolute; opacity: 0; inset: 0; width: 100%; height: 100%; margin: 0; cursor: pointer; }
.stars span { display: grid; place-items: center; width: 48px; height: 48px; border-radius: 12px; border: 1px solid var(--line-strong); background: var(--field); font-weight: 700; transition: all .15s; }
.stars input:checked + span { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); box-shadow: 0 0 18px -4px var(--glow); }
.stars input:focus-visible + span { outline: 2px solid var(--accent); outline-offset: 2px; }

/* errors */
.msg { display: none; margin-top: 8px; color: var(--err); font-size: 13.5px; }
.q.invalid .msg { display: block; }
.q.invalid input[type=text], .q.invalid input[type=email], .q.invalid input[type=number], .q.invalid input[type=date], .q.invalid select, .q.invalid textarea, .q.invalid .opt { border-color: var(--err); }

/* ---- footer / submit ---- */
.submit-bar { margin-top: 8px; }
.submit { width: 100%; min-height: 54px; border: 0; border-radius: 12px; cursor: pointer; font: inherit; font-size: 17px; font-weight: 700; color: var(--accent-ink); background: var(--accent); transition: box-shadow .2s, transform .1s, filter .2s; }
.submit:hover { box-shadow: 0 0 0 4px var(--accent-soft), 0 8px 30px -4px var(--glow); filter: brightness(1.06); }
.submit:active { transform: translateY(1px); }
.submit:focus-visible { outline: 2px solid #fff; outline-offset: 3px; }
.submit:disabled { opacity: .6; cursor: default; box-shadow: none; }
.fine { text-align: center; color: var(--muted); font-size: 12.5px; margin-top: 14px; }

/* ---- states ---- */
.banner { position: sticky; top: 0; z-index: 5; margin: -28px -16px 20px; padding: 10px 16px; text-align: center; font-size: 13.5px; background: #3B2F0B; color: #FCD34D; border-bottom: 1px solid rgba(252, 211, 77, .3); }
.done { text-align: center; padding: 44px 20px; }
.done .tick { width: 64px; height: 64px; margin: 0 auto 16px; border-radius: 50%; display: grid; place-items: center; background: var(--accent-soft); color: var(--accent); box-shadow: 0 0 40px -6px var(--glow); }
.done .tick svg { width: 32px; height: 32px; }
.done h2 { font-size: 1.4rem; }
.done p { color: var(--muted); margin-top: 8px; white-space: pre-wrap; }
.empty { text-align: center; color: var(--muted); padding: 40px 20px; }
.again { margin-top: 20px; padding: 10px 18px; border-radius: 10px; border: 1px solid var(--line-strong); background: transparent; color: var(--text); font: inherit; cursor: pointer; }
.again:hover { border-color: var(--accent); }
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }