:root {
  --bg: #f5f6f7;
  --card-bg: #ffffff;
  --border: #dfe3e6;
  --text: #2a2e32;
  --muted: #6f767d;
  --accent: #3f6e8f;
  --accent-dark: #2d5470;
  --accent-soft: #e6eef4;
  --up: #b5543c;
  --down: #3f7f5e;
}

* { box-sizing: border-box; }

body {
  margin: 0 auto;
  padding: 16px;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", sans-serif;
  background: var(--bg);
  color: var(--text);
  max-width: 640px;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

h1 {
  font-size: 1.4rem;
  margin: 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.title-icon { flex-shrink: 0; }
h2 { font-size: 1.05rem; margin: 0 0 8px; }

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px;
  margin-bottom: 14px;
}

.hidden { display: none !important; }

label {
  display: block;
  margin-bottom: 12px;
  font-size: 0.9rem;
  color: var(--muted);
}

input, textarea {
  display: block;
  width: 100%;
  margin-top: 4px;
  padding: 9px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 1rem;
  font-family: inherit;
  color: var(--text);
  background: #fff;
}

textarea { min-height: 56px; resize: vertical; }

button {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 10px 16px;
  font-size: 1rem;
  font-family: inherit;
  cursor: pointer;
}

button:hover { background: var(--accent-dark); }
button:disabled { opacity: 0.55; cursor: default; }

.link-button {
  background: none;
  color: var(--accent);
  padding: 0;
  font-size: 0.85rem;
  text-decoration: underline;
}
.link-button:hover { background: none; color: var(--accent-dark); }

#auth-status { font-size: 0.8rem; color: var(--muted); }
#auth-status button {
  background: none; color: var(--accent); padding: 0 0 0 6px;
  font-size: 0.8rem; text-decoration: underline;
}

#login-message { font-size: 0.85rem; color: var(--accent-dark); }

/* ---------- 記録フォーム ---------- */

.form-top {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}
.form-top input { width: auto; margin-top: 0; }
.edit-note { font-size: 0.85rem; color: var(--up); }

.voice-button {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 18px;
  font-size: 1.15rem;
  border-radius: 14px;
}
.voice-icon { font-size: 1.5rem; }
.voice-button.listening {
  background: #b5543c;
  animation: pulse 1.2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(181, 84, 60, 0.45); }
  50% { box-shadow: 0 0 0 10px rgba(181, 84, 60, 0); }
}

.voice-message {
  font-size: 0.85rem;
  color: var(--muted);
  margin: 8px 0 14px;
  min-height: 1.2em;
}

.weight-input-wrap {
  display: flex;
  align-items: baseline;
  gap: 6px;
}
.weight-input-wrap input {
  font-size: 1.8rem;
  font-weight: 600;
  width: 7.5rem;
  text-align: right;
  font-variant-numeric: tabular-nums;
}
.unit { font-size: 1.1rem; color: var(--muted); }

.field-group { margin-bottom: 12px; }
.field-label {
  display: block;
  margin-bottom: 4px;
  font-size: 0.9rem;
  color: var(--muted);
}

.scale { display: flex; gap: 6px; }
.face {
  flex: 1;
  background: var(--bg);
  border: 2px solid transparent;
  font-size: 1.5rem;
  padding: 6px 0;
  border-radius: 10px;
  filter: grayscale(0.7);
  opacity: 0.75;
}
.face:hover { background: var(--accent-soft); }
.face.selected {
  background: var(--accent-soft);
  border-color: var(--accent);
  filter: none;
  opacity: 1;
}

.gym-toggles { display: flex; gap: 8px; }
.gym-toggle {
  flex: 1;
  background: var(--bg);
  color: var(--muted);
  border: 2px solid transparent;
  border-radius: 10px;
  padding: 10px 6px;
  font-size: 0.92rem;
}
.gym-toggle:hover { background: #fbeee2; }
.gym-toggle.selected {
  background: #fbeee2;
  border-color: #e08a3c;
  color: #9a5418;
  font-weight: 600;
}
.gym-mark { color: #9a5418; }

.form-buttons { display: flex; align-items: center; gap: 16px; }
.form-buttons button[type="submit"] { flex: 1; padding: 12px; }

.save-message {
  font-size: 0.9rem;
  color: var(--accent-dark);
  margin: 10px 0 0;
  min-height: 1.2em;
}

/* ---------- 最新の状況 ---------- */

.summary-card {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  text-align: center;
}
.stat { display: flex; flex-direction: column; gap: 2px; }
.stat-label { font-size: 0.78rem; color: var(--muted); }
.stat-value {
  font-size: 1.15rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

/* ---------- グラフ ---------- */

.chart-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 8px;
}
.chart-head h2 { margin: 0; }

.range-tabs { display: flex; gap: 4px; }
.range-tabs button {
  background: var(--bg);
  color: var(--muted);
  font-size: 0.82rem;
  padding: 5px 10px;
  border-radius: 999px;
}
.range-tabs button.active { background: var(--accent); color: #fff; }

.chart-wrap { position: relative; height: 240px; }
.chart-wrap.no-data::after {
  content: "この期間の記録はまだありません";
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-size: 0.9rem;
}

.chart-note { font-size: 0.78rem; color: var(--muted); margin: 8px 0 0; }

/* ---------- 一覧 ---------- */

.records-list { list-style: none; padding: 0; margin: 0; }
.records-list li {
  border-bottom: 1px solid var(--border);
  padding: 10px 0;
}
.records-list li:last-child { border-bottom: none; }
.records-list .empty { color: var(--muted); font-size: 0.9rem; }

.records-list li {
  display: grid;
  grid-template-columns: 1fr auto;
  column-gap: 8px;
}
.rec-main {
  display: flex;
  align-items: baseline;
  gap: 8px;
  min-width: 0;
}
.rec-date { flex: 0 0 4.4rem; color: var(--muted); font-size: 0.85rem; white-space: nowrap; }
.rec-weight {
  flex: 0 0 4.4rem;
  font-size: 1.1rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.rec-weight small { font-size: 0.72rem; color: var(--muted); font-weight: 400; }
.rec-diff { flex: 0 0 3.8rem; font-size: 0.78rem; color: var(--muted); font-variant-numeric: tabular-nums; white-space: nowrap; }
.rec-faces { font-size: 0.78rem; color: var(--muted); display: inline-flex; gap: 6px; margin-right: 8px; white-space: nowrap; }
.rec-faces:empty { display: none; }
.rec-comment { grid-column: 1 / -1; margin: 3px 0 0 4.9rem; font-size: 0.9rem; white-space: pre-wrap; }
.rec-actions { grid-column: 2; grid-row: 1; display: flex; gap: 10px; align-self: center; }
.rec-actions .delete-btn { color: #b23b3b; }
.records-list li.more { display: block; text-align: center; }