:root {
  --base:   #FFFFFF;
  --paper:  #FAF9F7;
  --ink:    #1B1B1B;
  --sub:    #767676;
  --line:   #ECEAE6;
  --orange: #FF5C1A;
  --deep:   #E84E0F;
  --tint:   #FFF1EA;
  --r-pill: 999px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans",
    "Hiragino Kaku Gothic ProN", "Yu Gothic UI", "Noto Sans JP", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.app {
  min-height: 100dvh;
  max-width: 480px;
  margin: 0 auto;
  padding: calc(env(safe-area-inset-top) + 24px) 22px
           calc(env(safe-area-inset-bottom) + 24px);
  display: flex;
  flex-direction: column;
}

/* ---- header ---- */
.topbar { display: flex; align-items: baseline; gap: 10px; margin-bottom: 28px; }
.wordmark { font-weight: 500; font-size: 20px; letter-spacing: -0.01em; }
.wordmark .dot, .js-brand .dot { color: var(--orange); }
.appname { font-size: 12px; color: var(--sub); letter-spacing: 0.12em; }

/* ---- labels ---- */
.daylabel, .fromhead {
  font-size: 13px;
  color: var(--sub);
  margin-bottom: 14px;
}
.fromhead { margin-top: 8px; }
.fromhead b { color: var(--deep); font-weight: 600; }

/* ---- question ---- */
.question {
  font-size: clamp(22px, 5.8vw, 28px);
  font-weight: 500;
  line-height: 1.75;
  letter-spacing: 0.01em;
  margin-bottom: 22px;
}

/* ---- inputs ---- */
.answer {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px 16px;
  font-family: inherit;
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--base);
  outline: none;
  resize: none;
  transition: border-color 0.16s ease;
}
.answer:focus { border-color: var(--orange); }
.namein {
  width: 100%;
  border: none;
  border-bottom: 1px solid var(--line);
  padding: 10px 4px;
  margin-top: 12px;
  font-family: inherit;
  font-size: 14px;
  color: var(--ink);
  background: none;
  outline: none;
  transition: border-color 0.16s ease;
}
.namein:focus { border-color: var(--orange); }

/* ---- sealed (相手の答え 伏せ札) ---- */
.sealed {
  display: flex;
  align-items: center;
  gap: 10px;
  justify-content: center;
  padding: 18px;
  margin-bottom: 18px;
  border: 1.5px dashed var(--orange);
  border-radius: 14px;
  background: var(--tint);
}
.seal { font-size: 18px; }
.sealtext { font-size: 13px; color: var(--deep); }

/* ---- both answers ---- */
.ans-block { padding: 4px 2px; }
.ans-name {
  font-size: 12px;
  color: var(--orange);
  font-weight: 600;
  letter-spacing: 0.02em;
  margin-bottom: 6px;
}
.ans-text { font-size: 17px; line-height: 1.7; color: var(--ink); }
.ans-divider { height: 1px; background: var(--line); margin: 20px 0; }

/* ---- buttons ---- */
.btn-primary {
  display: block;
  width: 100%;
  border: none;
  background: var(--orange);
  color: #fff;
  font-family: inherit;
  font-size: 16px;
  font-weight: 500;
  padding: 16px 0;
  border-radius: var(--r-pill);
  cursor: pointer;
  margin-top: 20px;
  box-shadow: 0 10px 26px -12px rgba(255, 92, 26, 0.6);
  transition: background 0.16s ease, transform 0.1s ease;
}
.btn-primary:hover { background: var(--deep); }
.btn-primary:active { transform: translateY(1px); }

.make-own {
  display: block;
  text-align: center;
  margin-top: 22px;
  color: var(--sub);
  text-decoration: none;
  font-size: 14px;
}
.make-own:hover { color: var(--ink); }

.note { margin-top: 16px; font-size: 12px; color: #a9a59e; line-height: 1.7; }
.note b { color: var(--sub); font-weight: 600; }

/* ---- misc ---- */
.credit {
  margin-top: auto;
  padding-top: 26px;
  font-size: 12px;
  color: #b6b3ad;
  display: flex;
  gap: 8px;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
}
.credit a { color: var(--sub); text-decoration: none; transition: color 0.16s ease; }
.credit a:hover { color: var(--orange); }
.credit .sep { color: var(--line); }

.toast {
  position: fixed; z-index: 20;
  left: 50%; bottom: calc(env(safe-area-inset-bottom) + 22px);
  transform: translateX(-50%);
  background: var(--ink); color: #fff;
  border-radius: var(--r-pill);
  padding: 11px 20px; font-size: 13px;
  box-shadow: 0 10px 30px -10px rgba(0,0,0,0.4);
}

.fade { animation: fade 0.35s ease; }
@keyframes fade { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

[hidden] { display: none !important; }