:root {
  --bg: #FFF3E2;
  --card: #FFFFFF;
  --ink: #3B2E28;
  --ink-soft: #8A776C;
  --dog: #FF9662;
  --dog-deep: #E97A45;
  --cat: #8C7AE6;
  --cat-deep: #6F5BD0;
  --mint: #63C7B2;
  --yellow: #FFD447;
  --line: #F0DFC9;
  --radius-lg: 28px;
  --radius-md: 18px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  background-image:
    radial-gradient(circle at 10% 15%, rgba(255,150,98,0.10) 0, transparent 45%),
    radial-gradient(circle at 90% 10%, rgba(140,122,230,0.10) 0, transparent 40%),
    radial-gradient(circle at 85% 85%, rgba(99,199,178,0.10) 0, transparent 45%);
  font-family: 'Gowun Dodum', sans-serif;
  color: var(--ink);
  display: flex;
  justify-content: center;
  padding: 40px 16px 80px;
}

.wrap { width: 100%; max-width: 460px; }

/* floating paw decorations */
.paw {
  position: fixed;
  font-size: 22px;
  opacity: 0.18;
  pointer-events: none;
  animation: float 6s ease-in-out infinite;
}
.paw--1 { top: 8%; left: 6%; animation-delay: 0s; }
.paw--2 { top: 18%; right: 8%; animation-delay: 1.2s; font-size: 16px; }
.paw--3 { bottom: 10%; left: 10%; animation-delay: 2.4s; font-size: 18px; }
@keyframes float {
  0%, 100% { transform: translateY(0) rotate(-8deg); }
  50% { transform: translateY(-14px) rotate(8deg); }
}
@media (prefers-reduced-motion: reduce) {
  .paw, .tag, .tag-hole-ring { animation: none !important; }
}

header { text-align: center; margin-bottom: 28px; }
.eyebrow {
  display: inline-block;
  font-size: 13px;
  color: var(--ink-soft);
  background: #fff;
  border: 1px solid var(--line);
  padding: 5px 14px;
  border-radius: 999px;
  margin-bottom: 14px;
}
h1 {
  font-family: 'Jua', sans-serif;
  font-weight: 400;
  font-size: 30px;
  line-height: 1.35;
  margin: 0;
}
h1 span { color: var(--dog-deep); }

.card {
  background: var(--card);
  border-radius: var(--radius-lg);
  padding: 26px 22px;
  margin-top: 22px;
  box-shadow: 0 14px 0 -6px rgba(59,46,40,0.05), 0 20px 40px -18px rgba(59,46,40,0.25);
  border: 2px solid var(--line);
}

/* species toggle */
.toggle {
  display: flex;
  background: var(--bg);
  border-radius: 999px;
  padding: 5px;
  gap: 4px;
  border: 2px solid var(--line);
}
.toggle button {
  flex: 1;
  border: none;
  background: transparent;
  font-family: 'Jua', sans-serif;
  font-size: 16px;
  padding: 11px 0;
  border-radius: 999px;
  cursor: pointer;
  color: var(--ink-soft);
  transition: all 0.25s ease;
}
.toggle button.active[data-sp="dog"] { background: var(--dog); color: #fff; box-shadow: 0 4px 10px -3px rgba(233,122,69,0.6); }
.toggle button.active[data-sp="cat"] { background: var(--cat); color: #fff; box-shadow: 0 4px 10px -3px rgba(111,91,208,0.6); }

.field { margin-top: 22px; }
.field label {
  display: block;
  font-size: 14px;
  color: var(--ink-soft);
  margin-bottom: 8px;
}
.field .hint {
  display: block;
  font-size: 12px;
  color: var(--ink-soft);
  margin-top: 6px;
}
.field .row { display: flex; gap: 10px; }
.field input[type="number"] {
  width: 100%;
  font-family: 'Gowun Dodum', sans-serif;
  font-size: 16px;
  padding: 12px 14px;
  border-radius: var(--radius-md);
  border: 2px solid var(--line);
  background: var(--bg);
  color: var(--ink);
  outline: none;
}
.field input:focus { border-color: var(--dog); }
body[data-sp="cat"] .field input:focus { border-color: var(--cat); }

/* remove native number spinners so they don't overlap the unit label */
.field input[type="number"]::-webkit-inner-spin-button,
.field input[type="number"]::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}
.field input[type="number"] {
  -moz-appearance: textfield;
  appearance: textfield;
}

/* input with fixed unit suffix, always visible regardless of typed value */
.input-group { position: relative; flex: 1; }
.input-group input { padding-right: 44px; }
.input-group .unit {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 14px;
  color: var(--ink-soft);
  pointer-events: none;
}

/* top page navigation */
.pagenav {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-bottom: 18px;
}
.pagenav a {
  text-decoration: none;
  font-family: 'Jua', sans-serif;
  font-size: 13px;
  color: var(--ink-soft);
  background: #fff;
  border: 2px solid var(--line);
  padding: 8px 16px;
  border-radius: 999px;
  transition: all 0.2s ease;
}
.pagenav a.active {
  background: var(--dog);
  border-color: var(--dog);
  color: #fff;
}
body[data-sp="cat"] .pagenav a.active { background: var(--cat); border-color: var(--cat); }

.segmented.grid { flex-wrap: wrap; }
.segmented.grid button { flex: 1 1 45%; }

.segmented {
  display: flex;
  gap: 8px;
  margin-top: 22px;
}
.segmented button {
  flex: 1;
  padding: 10px 4px;
  border-radius: var(--radius-md);
  border: 2px solid var(--line);
  background: var(--bg);
  font-family: 'Gowun Dodum', sans-serif;
  font-size: 13px;
  color: var(--ink-soft);
  cursor: pointer;
}
.segmented button.active {
  border-color: var(--dog);
  background: #FFEFE2;
  color: var(--dog-deep);
  font-weight: bold;
}
#sizeField { display: block; }
#sizeField.hidden { display: none; }

.calc-btn {
  width: 100%;
  margin-top: 26px;
  padding: 15px;
  border: none;
  border-radius: var(--radius-md);
  background: var(--dog);
  color: #fff;
  font-family: 'Jua', sans-serif;
  font-size: 17px;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.2s ease;
}
body[data-sp="cat"] .calc-btn { background: var(--cat); }
.calc-btn:active { transform: scale(0.97); }

/* result - pet tag signature element */
.result-wrap {
  margin-top: 34px;
  display: none;
  flex-direction: column;
  align-items: center;
}
.result-wrap.show { display: flex; }

.tag-ring {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 3px solid var(--ink);
  background: var(--bg);
  margin-bottom: -3px;
  z-index: 2;
}

.tag {
  position: relative;
  width: 220px;
  background: var(--yellow);
  border: 3px solid var(--ink);
  border-radius: 20px;
  padding: 22px 18px 18px;
  text-align: center;
  transform-origin: top center;
  animation: swing 3.2s ease-in-out infinite;
  box-shadow: 0 10px 0 -4px rgba(0,0,0,0.1);
}
body[data-sp="dog"] .tag { background: var(--dog); color: #fff; }
body[data-sp="cat"] .tag { background: var(--cat); color: #fff; }

@keyframes swing {
  0%, 100% { transform: rotate(-3deg); }
  50% { transform: rotate(3deg); }
}

.tag .icon { font-size: 34px; display: block; margin-bottom: 4px; }
.tag .big-number {
  font-family: 'Jua', sans-serif;
  font-size: 44px;
  line-height: 1;
  margin: 4px 0;
}
.tag .unit { font-size: 14px; opacity: 0.9; }
.tag .sub { font-size: 12px; margin-top: 8px; opacity: 0.85; }

.desc {
  margin: 18px auto 0;
  text-align: center;
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.6;
  max-width: 320px;
}
.desc b { color: var(--ink); }

footer {
  margin-top: 30px;
  text-align: center;
  font-size: 12px;
  color: var(--ink-soft);
  line-height: 1.6;
}