:root {
  --bg: #f3efe6;
  --ink: #1c2a24;
  --muted: #5a6b62;
  --panel: #fffdf8;
  --line: #d7d0c2;
  --accent: #0f6b5c;
  --accent-ink: #f7fffb;
  --warn: #8a4b12;
  --shadow: 0 12px 40px rgba(28, 42, 36, 0.08);
  --font-display: "Segoe UI", "Hiragino Sans", "Noto Sans JP", sans-serif;
  --font-body: "Segoe UI", "Hiragino Sans", "Noto Sans JP", sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: var(--font-body);
  background:
    radial-gradient(1200px 600px at 10% -10%, #e7f3ef 0%, transparent 55%),
    radial-gradient(900px 500px at 100% 0%, #f7e8d4 0%, transparent 50%),
    var(--bg);
}

.wrap {
  width: min(720px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 2.5rem 0 3rem;
}

.header { margin-bottom: 1.5rem; }
.brand {
  margin: 0 0 0.35rem;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 700;
}
h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.6rem, 4vw, 2rem);
  font-family: var(--font-display);
  line-height: 1.25;
}
.sub { margin: 0; color: var(--muted); line-height: 1.6; }

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 1.25rem;
  box-shadow: var(--shadow);
  margin-bottom: 1rem;
}

label, legend {
  display: block;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

textarea {
  width: 100%;
  resize: vertical;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.9rem 1rem;
  font: inherit;
  line-height: 1.6;
  background: #fff;
  color: var(--ink);
}

.tones {
  border: 0;
  margin: 1rem 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1rem;
}
.tones label {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 500;
  margin: 0;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1rem;
  margin-top: 1.1rem;
}

button {
  appearance: none;
  border: 0;
  border-radius: 999px;
  padding: 0.75rem 1.25rem;
  background: var(--accent);
  color: var(--accent-ink);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}
button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}
button.secondary {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
}

.quota { margin: 0; color: var(--muted); font-size: 0.95rem; }
.status {
  min-height: 1.4em;
  margin: 0.9rem 0 0;
  color: var(--warn);
  font-size: 0.95rem;
}
.status.ok { color: var(--accent); }

.result-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.75rem;
}
.result-head h2 { margin: 0; font-size: 1.1rem; }
pre {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
  line-height: 1.7;
  font-family: inherit;
  background: #f7f4ee;
  border-radius: 12px;
  padding: 1rem;
}

.footer {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.6;
}
.footer p { margin: 0.25rem 0; }
.pro { color: var(--ink); }