/* ==========================================================================
   Whiskerclock — v1 stylesheet
   Mobile-first, single column. Palette + shape language per project brief.
   ========================================================================== */

:root {
  --bg:        #FFF8F0;  /* warm cream   */
  --terracotta:#E8734A;  /* primary      */
  --teal:      #4A9E8E;  /* secondary    */
  --ink:       #3A332E;  /* warm charcoal*/
  --card:      #FFFFFF;
  --border:    #EDE0D3;  /* pale tan     */

  --ink-soft:  #6B615A;
  --terracotta-dark: #CF5C34;

  --radius:    16px;
  --radius-sm: 12px;
  --shadow:    0 2px 4px rgba(58, 51, 46, .04), 0 8px 24px rgba(58, 51, 46, .07);
  --shadow-lift: 0 4px 8px rgba(58, 51, 46, .06), 0 14px 34px rgba(58, 51, 46, .10);

  --font-head: 'Quicksand', sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, .wordmark, .result-big, .btn-primary, .seg-btn {
  font-family: var(--font-head);
}

.wrap {
  width: 100%;
  max-width: 620px;
  margin-inline: auto;
  padding-inline: 20px;
}

.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  margin: -1px; padding: 0; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute; left: 12px; top: -60px;
  background: var(--card); color: var(--ink);
  padding: 10px 16px; border-radius: var(--radius-sm);
  box-shadow: var(--shadow); z-index: 10;
  transition: top .15s ease;
}
.skip-link:focus { top: 12px; }

/* ── Header ──────────────────────────────────────────────────────────── */

.site-header {
  padding: 32px 0 24px;
  text-align: center;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.paw {
  width: 34px; height: 34px;
  fill: var(--terracotta);
  flex: none;
}

.wordmark {
  font-size: 30px;
  font-weight: 700;
  letter-spacing: -.02em;
}

.tagline {
  margin: 6px 0 0;
  color: var(--ink-soft);
  font-size: 16px;
}

/* ── Cards ───────────────────────────────────────────────────────────── */

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px 20px;
  margin-bottom: 20px;
}

/* ── Segmented toggle ────────────────────────────────────────────────── */

.segmented {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 6px;
  margin-bottom: 24px;
}

.seg-btn {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--ink-soft);
  font-size: 17px;
  font-weight: 700;
  padding: 12px 8px;
  border-radius: 9px;
  cursor: pointer;
  transition: background .18s ease, color .18s ease, box-shadow .18s ease;
}

.seg-btn:hover { color: var(--ink); }

.seg-btn.is-active {
  background: var(--card);
  color: var(--terracotta);
  box-shadow: 0 1px 2px rgba(58, 51, 46, .06), 0 4px 10px rgba(58, 51, 46, .07);
}

/* ── Form ────────────────────────────────────────────────────────────── */

.field { margin-bottom: 20px; }

label {
  display: block;
  font-weight: 600;
  font-size: 15px;
  margin-bottom: 8px;
}

.input-row {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--bg);
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 4px 16px 4px 4px;
  transition: border-color .18s ease, box-shadow .18s ease;
}

.input-row:focus-within {
  border-color: var(--terracotta);
  box-shadow: 0 0 0 4px rgba(232, 115, 74, .14);
}

.input-row.has-error { border-color: var(--terracotta-dark); }

#age {
  flex: 1;
  min-width: 0;
  border: 0;
  background: transparent;
  color: var(--ink);
  font-family: var(--font-head);
  font-size: 28px;
  font-weight: 700;
  padding: 12px 14px;
}
#age:focus { outline: none; }
#age::placeholder { color: #C9BBAE; }

/* strip spinners — the unit label carries the meaning */
#age::-webkit-outer-spin-button,
#age::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
#age { -moz-appearance: textfield; }

.unit {
  color: var(--ink-soft);
  font-size: 16px;
  flex: none;
}

.error {
  margin: 8px 0 0;
  color: var(--terracotta-dark);
  font-size: 14px;
  font-weight: 500;
}

.btn-primary {
  display: block;
  width: 100%;
  border: 0;
  border-radius: var(--radius-sm);
  background: var(--terracotta);
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  padding: 16px;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(232, 115, 74, .28);
  transition: background .18s ease, transform .12s ease, box-shadow .18s ease;
}
.btn-primary:hover { background: var(--terracotta-dark); box-shadow: 0 6px 18px rgba(232, 115, 74, .34); }
.btn-primary:active { transform: translateY(1px); }

.btn-secondary {
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--card);
  color: var(--teal);
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 700;
  padding: 11px 20px;
  cursor: pointer;
  transition: border-color .18s ease, background .18s ease;
}
.btn-secondary:hover { border-color: var(--teal); background: #F4FAF9; }

:focus-visible {
  outline: 3px solid var(--teal);
  outline-offset: 2px;
}

/* ── Result card ─────────────────────────────────────────────────────── */

.result {
  text-align: center;
  padding: 32px 20px;
  border-color: #F3DED2;
  background: linear-gradient(180deg, #FFFDFB 0%, var(--card) 55%);
}

.result[hidden] { display: none; }

.result.is-new { animation: pop .38s cubic-bezier(.2, .9, .3, 1.2); }

@keyframes pop {
  from { opacity: 0; transform: scale(.96) translateY(8px); }
  to   { opacity: 1; transform: none; }
}

.result-emoji { font-size: 38px; margin: 0 0 8px; line-height: 1; }

.result-line {
  margin: 0;
  color: var(--ink-soft);
  font-size: 17px;
}
.equals { color: var(--terracotta); font-weight: 600; }

.result-big {
  margin: 4px 0 12px;
  font-size: 52px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--terracotta);
  letter-spacing: -.02em;
}
.result-big small {
  display: block;
  font-size: 17px;
  font-weight: 500;
  color: var(--ink-soft);
  letter-spacing: 0;
}

.result-blurb {
  margin: 0 auto;
  max-width: 34ch;
  font-size: 17px;
  color: var(--ink);
}

.result-actions { margin-top: 22px; }

/* ── Ad slots (placeholders until AdSense approval) ──────────────────── */

.ad-slot {
  display: grid;
  place-items: center;
  min-height: 100px;
  margin-bottom: 20px;
  border: 2px dashed var(--border);
  border-radius: var(--radius-sm);
  color: #B7A697;
  font-size: 13px;
  letter-spacing: .08em;
  text-transform: uppercase;
}

/* ── Explainer ───────────────────────────────────────────────────────── */

.explainer { padding: 8px 20px; }

.explainer summary {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
}
.explainer summary::-webkit-details-marker { display: none; }

.explainer summary h2 {
  display: inline;
  margin: 0;
  font-size: 19px;
  font-weight: 700;
}

.explainer summary::after {
  content: '';
  margin-left: auto;
  width: 9px; height: 9px;
  border-right: 2.5px solid var(--terracotta);
  border-bottom: 2.5px solid var(--terracotta);
  transform: rotate(45deg);
  transition: transform .2s ease;
}
.explainer details[open] summary::after { transform: rotate(-135deg); }

.explainer-body {
  padding-bottom: 20px;
  border-top: 1px solid var(--border);
  padding-top: 16px;
}

.explainer-body h3 {
  margin: 22px 0 6px;
  font-size: 16px;
  color: var(--teal);
}

.explainer-body p { margin: 0 0 12px; font-size: 16px; }

.formula {
  list-style: none;
  margin: 0 0 12px;
  padding: 0;
}
.formula li {
  padding: 8px 12px;
  margin-bottom: 6px;
  background: var(--bg);
  border-radius: 9px;
  font-size: 15px;
}
.formula code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 14px;
}

.note {
  color: var(--ink-soft);
  font-size: 15px !important;
  border-left: 3px solid var(--border);
  padding-left: 14px;
  margin-top: 18px !important;
}

/* ── Footer ──────────────────────────────────────────────────────────── */

.site-footer {
  padding: 8px 0 40px;
  text-align: center;
  color: var(--ink-soft);
  font-size: 15px;
}

.site-footer a {
  color: var(--ink-soft);
  text-decoration: none;
  border-bottom: 1px solid var(--border);
}
.site-footer a:hover { color: var(--terracotta); border-color: currentColor; }

.site-footer .dot { margin: 0 8px; }

.made-with { margin: 8px 0 0; }

/* ── Toast ───────────────────────────────────────────────────────────── */

.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%) translateY(12px);
  background: var(--ink);
  color: #fff;
  padding: 12px 20px;
  border-radius: 999px;
  font-size: 15px;
  box-shadow: var(--shadow-lift);
  opacity: 0;
  transition: opacity .2s ease, transform .2s ease;
  pointer-events: none;
}
.toast[hidden] { display: none; }
.toast.is-visible { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ── Wider screens ───────────────────────────────────────────────────── */

@media (min-width: 640px) {
  .site-header { padding-top: 48px; }
  .wordmark    { font-size: 34px; }
  .paw         { width: 38px; height: 38px; }
  .card        { padding: 28px; }
  .explainer   { padding: 8px 28px; }
  .result      { padding: 40px 28px; }
  .result-big  { font-size: 62px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }
}

/* ── Prose pages (about, privacy, 404) ───────────────────────────────── */

.logo-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: inherit;
}

.prose h1 {
  margin: 0 0 4px;
  font-size: 28px;
  font-weight: 700;
}

.prose .updated {
  margin: 0 0 24px;
  color: var(--ink-soft);
  font-size: 14px;
}

.prose h2 {
  margin: 28px 0 8px;
  font-size: 19px;
  font-weight: 700;
  color: var(--teal);
}

.prose h2:first-of-type { margin-top: 8px; }

.prose p, .prose li { font-size: 16px; }
.prose p { margin: 0 0 14px; }

.prose ul { margin: 0 0 14px; padding-left: 22px; }
.prose li { margin-bottom: 7px; }

.prose a { color: var(--terracotta); }
.prose a:hover { color: var(--terracotta-dark); }

.prose .callout {
  background: var(--bg);
  border-left: 3px solid var(--teal);
  border-radius: 0 9px 9px 0;
  padding: 14px 16px;
  margin: 0 0 16px;
}
.prose .callout p:last-child { margin-bottom: 0; }

/* ── 404 ─────────────────────────────────────────────────────────────── */

.notfound {
  text-align: center;
  padding: 48px 24px;
}
.notfound .code {
  font-family: var(--font-head);
  font-size: 64px;
  font-weight: 700;
  color: var(--terracotta);
  line-height: 1;
  margin: 0 0 8px;
}
.notfound h1 { font-size: 24px; margin: 0 0 10px; }
.notfound p { color: var(--ink-soft); margin: 0 0 24px; }
.notfound .btn-primary { display: inline-block; width: auto; padding: 14px 28px; text-decoration: none; }