/* ReliefMap — design system. Original. MIT. */
:root {
  --teal: #0d9488; --teal-dark: #0f766e; --teal-light: #ccfbf1;
  --ink: #10241f; --ink-soft: #3c5a53; --paper: #f6faf9; --card: #ffffff;
  --red: #dc2626; --red-bg: #fef2f2; --amber-bg: #fffbeb;
  --line: #dcebe7; --shadow: 0 6px 24px rgba(13, 62, 54, .08);
  --radius: 18px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--paper); color: var(--ink); line-height: 1.6;
}
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 20px; }

/* ---------- Top bar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.92); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.topbar .wrap { display: flex; align-items: center; justify-content: space-between; padding: 14px 20px; gap: 12px; flex-wrap: wrap; }
.logo { display: flex; align-items: center; gap: 10px; }
.logo-mark { width: 38px; height: 38px; }
.logo b { font-size: 19px; letter-spacing: -.3px; display: block; }
.logo small { color: var(--ink-soft); font-size: 11px; letter-spacing: .4px; text-transform: uppercase; }
.mode-nav { display: flex; gap: 6px; flex-wrap: wrap; }
.mode-btn {
  border: 1px solid var(--line); background: var(--card); color: var(--ink-soft);
  padding: 9px 16px; border-radius: 999px; font: 600 13.5px Inter, sans-serif;
  cursor: pointer; transition: all .18s;
}
.mode-btn:hover { border-color: var(--teal); color: var(--teal-dark); }
.mode-btn.active { background: var(--teal); border-color: var(--teal); color: #fff; }

/* ---------- Hero / cards ---------- */
main { padding: 26px 20px 60px; }
.hero-card {
  background: linear-gradient(135deg, #0d9488 0%, #115e59 60%, #134e4a 100%);
  color: #fff; border-radius: 24px; padding: 34px 32px; margin: 8px 0 22px;
  box-shadow: var(--shadow);
}
.hero-card h1 { font-size: clamp(26px, 4.5vw, 38px); letter-spacing: -.8px; margin-bottom: 10px; }
.hero-card p { opacity: .92; max-width: 640px; font-size: 15.5px; }

.map-card, .text-card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow);
  margin-bottom: 18px;
}
.view-toggle { display: flex; gap: 8px; justify-content: center; margin-bottom: 8px; }

/* ---------- Body SVG ---------- */
#body-map-host { display: flex; justify-content: center; padding: 8px 0; }
.body-svg { width: min(300px, 78vw); height: auto; }
.bpart {
  fill: #e6f2ef; stroke: #9fc4bc; stroke-width: 1.2; cursor: pointer;
  transition: fill .15s, stroke .15s;
}
.bpart:hover { fill: #99f6e4; stroke: var(--teal); }
.bpart.selected { fill: var(--teal); stroke: var(--teal-dark); stroke-width: 1.6; }
.map-hint { text-align: center; color: var(--ink-soft); font-weight: 600; font-size: 14px; }

.quick-row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; justify-content: center; color: var(--ink-soft); font-size: 13px; }

/* ---------- Chips & buttons ---------- */
.chip {
  border: 1px solid var(--line); background: var(--card); color: var(--ink);
  padding: 7px 13px; border-radius: 999px; font: 500 13px Inter, sans-serif;
  cursor: pointer; transition: all .15s; display: inline-flex; align-items: center; gap: 7px;
}
.chip:hover { border-color: var(--teal); }
.chip.active { background: var(--teal); border-color: var(--teal); color: #fff; }
.chip.selectable.wide { flex-direction: column; align-items: flex-start; border-radius: 14px; padding: 9px 14px; }
.chip.selectable.wide small { color: var(--ink-soft); font-size: 11px; }
.chip.selectable.wide.active small { color: #d9fffa; }
.chip-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }

.btn-primary {
  background: var(--teal); color: #fff; border: none; border-radius: 14px;
  padding: 13px 22px; font: 700 15px Inter, sans-serif; cursor: pointer;
  transition: background .15s; margin: 6px 6px 6px 0;
}
.btn-primary:hover { background: var(--teal-dark); }
.btn-primary.big { padding: 15px 28px; font-size: 16px; margin-top: 14px; }
.btn-ghost {
  background: none; border: 1px solid var(--line); color: var(--ink-soft);
  border-radius: 12px; padding: 10px 18px; font: 600 13.5px Inter, sans-serif;
  cursor: pointer; margin: 6px 6px 6px 0;
}
.btn-ghost:hover { border-color: var(--teal); color: var(--teal-dark); }

/* ---------- Config step ---------- */
.cfg-title { font-size: 21px; margin: 10px 0 6px; letter-spacing: -.3px; }
.cfg-group { margin: 14px 0; }
.cfg-group label { font-size: 12.5px; font-weight: 700; text-transform: uppercase; letter-spacing: .7px; color: var(--ink-soft); }
.cfg-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 640px) { .cfg-row { grid-template-columns: 1fr; } }

/* ---------- Results ---------- */
.result-head h2 { font-size: clamp(22px, 3.5vw, 30px); letter-spacing: -.5px; }
.result-head .ctx { color: var(--teal-dark); font-weight: 600; font-size: 14px; margin: 4px 0 8px; }
.result-head .mech-desc { color: var(--ink-soft); max-width: 720px; }
.section-title {
  font-size: 17px; font-weight: 800; letter-spacing: -.2px;
  margin: 26px 0 12px; padding-left: 12px; border-left: 4px solid var(--teal);
}

/* structure diagram */
.struct-diagram { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.struct-head { padding: 16px 18px; background: linear-gradient(120deg, #ecfdf5, #e6f6f4); border-bottom: 1px solid var(--line); }
.struct-zoom { font-size: 18px; font-weight: 800; display: block; }
.struct-sub { font-size: 12px; color: var(--ink-soft); }
.struct-layer { padding: 14px 18px; border-bottom: 1px solid var(--line); transition: background .15s; }
.struct-layer:last-child { border-bottom: none; }
.struct-layer.isolated { background: #f0fdfa; }
.struct-layer.isolated .layer-items { display: flex; }
.layer-head { display: flex; align-items: center; gap: 9px; cursor: pointer; user-select: none; }
.layer-head b { font-size: 14.5px; }
.layer-icon { width: 22px; height: 22px; }
.layer-count { margin-left: auto; font-size: 11.5px; color: var(--ink-soft); }
.layer-items { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 10px; }
.chip i { width: 9px; height: 9px; border-radius: 50%; display: inline-block; }

/* causes */
.cause-list { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 12px; }
.cause-card {
  background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 16px;
}
.cause-card h4 { font-size: 15px; margin-bottom: 6px; }
.cause-card ul { margin: 8px 0 0 18px; color: var(--ink-soft); font-size: 13.5px; }
.mech-tag {
  display: inline-block; background: var(--teal-light); color: var(--teal-dark);
  font-size: 11px; font-weight: 700; padding: 3px 10px; border-radius: 999px;
  text-transform: uppercase; letter-spacing: .5px;
}

/* massage steps */
.massage-block { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; }
.safety-note, .caution {
  background: var(--amber-bg); border: 1px solid #fde68a; border-radius: 12px;
  padding: 12px 16px; font-size: 13.5px; margin-bottom: 14px;
}
.safety-note ul, .caution ul { margin: 6px 0 0 18px; }
.caution { background: var(--red-bg); border-color: #fecaca; }
.steps { display: flex; flex-direction: column; gap: 12px; }
.step { display: flex; gap: 14px; align-items: flex-start; background: #f8fcfb; border: 1px solid var(--line); border-radius: 14px; padding: 14px 16px; }
.step-n {
  flex: 0 0 30px; height: 30px; border-radius: 50%; background: var(--teal);
  color: #fff; display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 14px;
}
.step-n.soft { background: var(--teal-light); color: var(--teal-dark); }
.step h4 { font-size: 14.5px; margin-bottom: 3px; }
.step p { font-size: 13.5px; color: var(--ink-soft); }
.relief-list { display: flex; flex-direction: column; gap: 10px; }

/* red flags + disclaimer */
.redflags {
  background: var(--red-bg); border: 1px solid #fecaca; border-radius: var(--radius);
  padding: 18px; margin: 26px 0 14px;
}
.redflags h3 { color: var(--red); font-size: 16px; margin-bottom: 8px; }
.redflags ul { margin-left: 20px; color: #7f1d1d; font-size: 13.5px; }
.disclaimer {
  background: #f1f5f4; border: 1px dashed #b6cdc8; border-radius: 14px;
  padding: 14px 18px; font-size: 12.5px; color: var(--ink-soft); margin: 14px 0;
}

/* text mode */
.text-card textarea {
  width: 100%; border: 1.5px solid var(--line); border-radius: 14px;
  padding: 14px; font: 15px Inter, sans-serif; resize: vertical;
}
.text-card textarea:focus { outline: none; border-color: var(--teal); }
.fallback { background: var(--amber-bg); border: 1px solid #fde68a; border-radius: 12px; padding: 12px 16px; margin-top: 12px; font-size: 13.5px; display: none; }
.micro { font-size: 11.5px; color: var(--ink-soft); margin-top: 10px; }

/* photo mode */
.upload-box {
  display: block; border: 2px dashed var(--teal); border-radius: 16px;
  padding: 34px; text-align: center; color: var(--teal-dark); font-weight: 700;
  cursor: pointer; transition: background .15s;
}
.upload-box:hover { background: var(--teal-light); }
.photo-preview { max-width: 100%; max-height: 340px; border-radius: 14px; margin-top: 14px; display: none; }

/* diary */
.diary-row {
  display: flex; gap: 12px; flex-wrap: wrap; align-items: center;
  background: #f8fcfb; border: 1px solid var(--line); border-radius: 12px;
  padding: 12px 16px; margin-bottom: 8px; font-size: 13.5px;
}
.diary-row b { color: var(--teal-dark); }
.empty { color: var(--ink-soft); font-size: 14px; }

/* footer */
.footer { border-top: 1px solid var(--line); background: var(--card); padding: 28px 0 36px; margin-top: 30px; }
.credits { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-top: 14px; font-size: 12.5px; color: var(--ink-soft); }
.credits a { color: var(--teal-dark); font-weight: 600; }

/* toast */
.toast {
  position: fixed; bottom: 22px; left: 50%; transform: translateX(-50%) translateY(20px);
  background: var(--ink); color: #fff; padding: 12px 22px; border-radius: 999px;
  font: 600 13.5px Inter, sans-serif; opacity: 0; transition: all .3s; z-index: 100;
  max-width: 90vw; text-align: center;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* steps visibility */
.step-panel, .mode-panel { display: none; }
.step-panel.active, .mode-panel.active { display: block; animation: fadeIn .25s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

@media (max-width: 560px) {
  .topbar .wrap { justify-content: center; }
  .hero-card { padding: 24px 20px; }
}