:root {
  --primary: #c33;
  --primary-dark: #a22;
  --bg: #f8f8f8;
  --card-bg: #fff;
  --border: #ddd;
  --border-soft: #eee;
  --text: #222;
  --text-muted: #666;
  --error: #c33;
  --success: #2a8;
  --gap: 12px;
  --btn-min: 48px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Noto Sans JP", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
}

h1, h2, h3 { margin: 16px 0 8px 0; }
h1 { font-size: 22px; }
h2 { font-size: 18px; }
h3 { font-size: 16px; }

.container { padding: var(--gap); max-width: 1200px; margin: 0 auto; }

.screen[hidden] { display: none; }

/* === ログイン === */
.login-box {
  max-width: 400px;
  margin: 80px auto;
  padding: 24px;
  background: var(--card-bg);
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}
.login-box h1 { text-align: center; margin-bottom: 24px; }

/* === トップバー === */
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px var(--gap);
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}
.topbar h1 { margin: 0; font-size: 18px; }
.topbar-actions { display: flex; gap: 8px; }

/* === ボタン === */
button {
  min-height: var(--btn-min);
  padding: 0 16px;
  font-size: 16px;
  cursor: pointer;
  border: 1px solid var(--border);
  background: var(--card-bg);
  color: var(--text);
  border-radius: 6px;
  font-family: inherit;
  transition: background 0.15s, border-color 0.15s;
}
button:hover { background: #f0f0f0; }
button:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
button.primary {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
button.primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); }
button.danger {
  color: var(--error);
  border-color: var(--error);
}
button.danger:hover { background: #fee; }
button.block { display: block; width: 100%; margin-bottom: 16px; }

/* === フォーム === */
input, select, textarea {
  min-height: 40px;
  padding: 0 8px;
  font-size: 16px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--card-bg);
  color: var(--text);
  font-family: inherit;
  width: 100%;
}
input[type="number"] { padding-right: 0; }
label {
  display: block;
  margin: 8px 0;
  font-size: 14px;
  color: var(--text-muted);
}
label > input, label > select { margin-top: 4px; }

/* === プリセット一覧 === */
.preset-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-bottom: 24px;
}
.preset-card {
  padding: 16px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
}
.preset-card h3 { margin: 0 0 8px 0; word-break: break-word; }
.preset-card .summary {
  color: var(--text-muted);
  margin-bottom: 12px;
  font-size: 14px;
  word-break: break-word;
}
.preset-buttons { display: flex; gap: 8px; flex-wrap: wrap; }

/* === 実行中 === */
.running-card {
  padding: 16px;
  background: #fee;
  border: 2px solid var(--primary);
  border-radius: 8px;
  margin-bottom: 24px;
}
.running-card h3 { margin: 0 0 8px 0; }
.running-card p { margin: 4px 0; color: var(--text-muted); font-size: 14px; }

/* === エラー / 状態 === */
.error { color: var(--error); margin: 8px 0; }
.success { color: var(--success); margin: 8px 0; }
.empty { color: var(--text-muted); padding: 16px; text-align: center; }

/* === モーダル === */
dialog {
  width: 92%;
  max-width: 600px;
  max-height: 90vh;
  padding: 0;
  border: none;
  border-radius: 12px;
  background: var(--card-bg);
  color: var(--text);
}
dialog::backdrop { background: rgba(0,0,0,0.5); }
dialog form {
  padding: 16px;
  max-height: 90vh;
  overflow-y: auto;
}
.modal-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border-soft);
}

/* === フェーズ編集行 === */
.phase-row {
  padding: 12px;
  background: #f4f4f4;
  border: 1px solid var(--border-soft);
  border-radius: 6px;
  margin-bottom: 8px;
}
.phase-row .phase-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}
.phase-row .phase-num {
  font-weight: bold;
  font-size: 14px;
  color: var(--text-muted);
  min-width: 24px;
}
.phase-row .phase-type-select { flex: 1; }
.phase-row .phase-controls {
  display: flex;
  gap: 4px;
}
.phase-row .phase-controls button {
  min-height: 36px;
  padding: 0 10px;
  font-size: 14px;
}
.phase-row .phase-fields {
  display: grid;
  gap: 8px;
  grid-template-columns: 1fr;
}

/* === レスポンシブ === */
@media (min-width: 600px) {
  .preset-list { grid-template-columns: 1fr 1fr; }
  .phase-row .phase-fields { grid-template-columns: 1fr 1fr; }
}
@media (min-width: 1024px) {
  .preset-list { grid-template-columns: 1fr 1fr 1fr; }
}