:root {
  --bg: #0f1720;
  --panel: #1b2632;
  --panel-2: #223142;
  --text: #eef4fa;
  --muted: #8ea3b8;
  --accent: #e8b04b;
  --accent-2: #c8873a;
  --danger: #d16060;
  --radius: 16px;
  --shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(1200px 600px at 50% -10%, #1c2a38, var(--bg));
  color: var(--text);
  font-family: "Hiragino Mincho ProN", "Yu Mincho", "Noto Serif JP", serif;
  display: flex;
  justify-content: center;
  padding: 24px 16px 60px;
}

.app {
  width: 100%;
  max-width: 720px;
}

.topbar {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 20px;
}

.topbar h1 {
  font-size: 1.5rem;
  letter-spacing: 0.15em;
  margin: 0;
}

.counter {
  font-family: system-ui, sans-serif;
  color: var(--muted);
  font-size: 0.95rem;
}

/* ---- 札の表示 ---- */
.stage { margin-bottom: 22px; }

.card {
  background: linear-gradient(160deg, var(--panel-2), var(--panel));
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  min-height: 260px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 36px 28px;
  text-align: center;
  transition: transform 0.15s ease;
}

.card.reading { transform: scale(1.015); border-color: var(--accent); }

.card-text {
  font-size: clamp(1.4rem, 4.5vw, 2.4rem);
  line-height: 1.9;
  margin: 0;
  writing-mode: horizontal-tb;
}

.card-hidden {
  font-size: 5rem;
  margin: 0;
  display: none;
}

.card[data-hidden="true"] .card-text { display: none; }
.card[data-hidden="true"] .card-hidden { display: block; }

/* ---- ボタン ---- */
.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 22px;
}

.btn {
  font-family: system-ui, sans-serif;
  font-size: 1rem;
  padding: 12px 18px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: var(--panel-2);
  color: var(--text);
  cursor: pointer;
  transition: background 0.15s, transform 0.05s;
}
.btn:hover:not(:disabled) { background: #2b3d51; }
.btn:active:not(:disabled) { transform: translateY(1px); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }

.btn-primary {
  background: var(--accent);
  color: #1a1200;
  border-color: var(--accent-2);
  font-weight: 700;
}
.btn-primary:hover:not(:disabled) { background: #f0bd5f; }

.btn-ghost { background: transparent; }

/* ---- 設定 ---- */
.settings {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 14px 20px;
  background: var(--panel);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius);
  padding: 18px;
  font-family: system-ui, sans-serif;
  font-size: 0.95rem;
}

.settings label { display: flex; align-items: center; gap: 8px; }
.settings .range { flex-direction: column; align-items: flex-start; gap: 6px; }
.settings input[type="range"] { width: 100%; accent-color: var(--accent); }
.settings input[type="checkbox"] { width: 18px; height: 18px; accent-color: var(--accent); }
.settings select {
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  padding: 6px 8px;
}

.status {
  margin-top: 18px;
  color: var(--muted);
  font-family: system-ui, sans-serif;
  font-size: 0.85rem;
  min-height: 1.2em;
  text-align: center;
}