:root {
  --green: #15803d;
  --green-d: #14532d;
  --green-l: #dcfce7;
  --ink: #1f2937;
  --muted: #6b7280;
  --line: #e5e7eb;
  --bg: #f6f8f7;
  --card: #ffffff;
  --danger: #b91c1c;
  --radius: 14px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.5;
}

.wrap { width: 100%; max-width: 780px; margin: 0 auto; padding: 0 16px; }

.hero {
  position: relative;
  background:
    linear-gradient(180deg, rgba(10, 47, 27, .5) 0%, rgba(14, 61, 35, .24) 40%, rgba(14, 61, 35, .08) 62%, rgba(14, 61, 35, 0) 74%),
    url("/images/rth-silhouette.svg") no-repeat center bottom / cover,
    linear-gradient(135deg, var(--green-d), var(--green));
  color: #fff;
  padding: 30px 0 34px;
}
.hero h1 { margin: 2px 0 8px; font-size: 1.5rem; }
.hero .sub { margin: 0; color: #eaf7ee; font-size: .95rem; max-width: 640px; }
.hero h1, .hero .sub, .hero .eyebrow { text-shadow: 0 1px 3px rgba(6, 40, 20, .5), 0 2px 10px rgba(6, 40, 20, .3); }
.eyebrow { text-transform: uppercase; letter-spacing: .12em; font-size: .72rem; margin: 0; opacity: .9; }

main { padding: 22px 16px 40px; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 18px 20px;
  margin: 0 0 18px;
  box-shadow: 0 1px 2px rgba(16, 24, 40, .04);
}
.card h2 { font-size: 1.05rem; margin: 0 0 6px; color: var(--green-d); }
.card h3 { font-size: .95rem; margin: 0 0 4px; }
.hint { color: var(--muted); font-size: .88rem; margin: 0 0 14px; }

.researcher { border-left: 5px solid var(--green); }
.researcher .rlabel { text-transform: uppercase; letter-spacing: .1em; font-size: .7rem; color: var(--green); font-weight: 700; margin: 0 0 4px; }
.researcher .rname { font-size: 1.25rem; margin: 0 0 6px; color: var(--green-d); }
.researcher .rline { margin: 0 0 2px; font-size: .9rem; color: var(--ink); }
.researcher .rtitle { margin: 10px 0 0; font-size: .82rem; color: var(--muted); font-style: italic; }

.field { margin-bottom: 16px; }
.field > label.lbl { display: block; font-weight: 600; font-size: .92rem; margin-bottom: 6px; }
.field .req { color: var(--danger); }

input[type="text"], input[type="number"], select, textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  font: inherit;
  background: #fff;
  color: var(--ink);
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--green); border-color: var(--green); }
textarea { min-height: 90px; resize: vertical; }

.choices { display: flex; flex-wrap: wrap; gap: 8px; }
.choices label {
  display: inline-flex; align-items: center; gap: 7px;
  border: 1px solid var(--line); border-radius: 999px;
  padding: 8px 14px; cursor: pointer; font-size: .9rem; background: #fff;
}
.choices input { accent-color: var(--green); }
.choices label:has(input:checked) { border-color: var(--green); background: var(--green-l); }

.consent { display: flex; gap: 10px; align-items: flex-start; font-size: .9rem; }
.consent input { margin-top: 3px; accent-color: var(--green); }

.q { padding: 12px 0; border-top: 1px solid var(--line); }
.q:first-of-type { border-top: 0; }
.qtext { margin: 0 0 10px; font-size: .95rem; }
.qcode { color: var(--green); font-weight: 700; margin-right: 4px; }

.gridpicker {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 10px;
}
.gopt {
  position: relative;
  display: block;
  border: 2px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  cursor: pointer;
  background: #fff;
  transition: border-color .15s, box-shadow .15s;
}
.gopt input { position: absolute; opacity: 0; pointer-events: none; }
.gopt img { display: block; width: 100%; height: 120px; object-fit: cover; background: #eef1f0; }
.gopt .gcap { display: block; padding: 7px 10px; }
.gopt .gname { font-weight: 800; color: var(--green-d); font-size: .92rem; }
.gopt .gloc { display: block; font-size: .74rem; color: var(--ink); margin-top: 1px; line-height: 1.25; }
.gopt .gkec { display: block; font-size: .72rem; color: var(--muted); }
.gopt:hover { border-color: var(--green); }
.gopt.selected { border-color: var(--green); box-shadow: 0 0 0 3px var(--green-l); }
.gopt.selected::after {
  content: "\2713";
  position: absolute; top: 6px; right: 6px;
  width: 22px; height: 22px; border-radius: 50%;
  background: var(--green); color: #fff; font-size: .8rem;
  display: flex; align-items: center; justify-content: center;
}

.rthpref {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  gap: 10px;
}
.prefopt {
  position: relative;
  display: block;
  border: 2px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  cursor: pointer;
  background: #fff;
  transition: border-color .15s, box-shadow .15s;
}
.prefopt input { position: absolute; opacity: 0; pointer-events: none; }
.prefopt img { display: block; width: 100%; height: 118px; object-fit: cover; background: #eef1f0; }
.prefopt .pcap { padding: 8px 10px; font-size: .82rem; color: var(--ink); }
.prefopt:hover { border-color: var(--green); }
.prefopt.selected { border-color: var(--green); box-shadow: 0 0 0 3px var(--green-l); }
.prefopt.selected::after {
  content: "\2713";
  position: absolute; top: 6px; right: 6px;
  width: 22px; height: 22px; border-radius: 50%;
  background: var(--green); color: #fff; font-size: .8rem;
  display: flex; align-items: center; justify-content: center;
}

.scale { display: grid; grid-template-columns: repeat(5, 1fr); gap: 6px; }
.scale label {
  position: relative; display: flex; flex-direction: column; align-items: center;
  border: 1px solid var(--line); border-radius: 10px; padding: 8px 2px;
  cursor: pointer; font-size: .82rem; color: var(--muted); background: #fff; text-align: center;
}
.scale input { position: absolute; opacity: 0; pointer-events: none; }
.scale .n { font-weight: 700; color: var(--ink); font-size: .95rem; }
.scale label:has(input:checked) { border-color: var(--green); background: var(--green-l); }
.scale label:has(input:checked) .n { color: var(--green-d); }
.scale label:hover { border-color: var(--green); }

.legend { display: grid; grid-template-columns: repeat(5, 1fr); gap: 6px; margin: 0 0 4px; }
.legend span { font-size: .72rem; color: var(--muted); text-align: center; }

.actions { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; margin-top: 6px; }
button.primary {
  background: var(--green); color: #fff; border: 0; border-radius: 10px;
  padding: 12px 22px; font: inherit; font-weight: 600; cursor: pointer;
}
button.primary:disabled { opacity: .6; cursor: progress; }
button.ghost { background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 10px 16px; cursor: pointer; font: inherit; }

.alert { border-radius: 10px; padding: 12px 14px; font-size: .9rem; margin-bottom: 16px; }
.alert.err { background: #fef2f2; color: var(--danger); border: 1px solid #fecaca; }
.alert.ok { background: var(--green-l); color: var(--green-d); border: 1px solid #bbf7d0; }

.success h2 { color: var(--green-d); }
.scores { list-style: none; padding: 0; margin: 14px 0; }
.scores li { display: flex; justify-content: space-between; gap: 12px; padding: 8px 0; border-bottom: 1px dashed var(--line); font-size: .92rem; }
.scores li b { color: var(--green-d); }
.big-isk { font-size: 2rem; font-weight: 800; color: var(--green); margin: 4px 0 0; }

.foot { display: flex; justify-content: space-between; align-items: center; color: var(--muted); font-size: .8rem; padding-bottom: 28px; }
.foot a { color: var(--muted); }
.loading { color: var(--muted); }

@media (max-width: 540px) {
  .scale { grid-template-columns: repeat(5, 1fr); }
  .scale label { font-size: .72rem; padding: 7px 1px; }
  .legend span { font-size: .62rem; }
}