[hidden] { display: none !important; }

.account-panel {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 14px;
  background: rgba(0,0,0,0.02);
}
.account-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-size: 14px;
}
.username-form { display: flex; gap: 6px; align-items: center; }
.username-form input { padding: 4px 8px; }
.visible-toggle {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  color: var(--muted);
}

:root {
  --bg: #ffffff;
  --text: #111111;
  --muted: #666666;
  --border: #e6e6e6;
  --accent: #3a7afe;
  --shadow: 0 6px 18px rgba(0,0,0,0.06);
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Noto Sans", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
}

.app-header {
  max-width: 880px;
  margin: 32px auto 16px;
  padding: 0 16px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  align-items: start;
}

.app-header h1 {
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 0;
}

.creator {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px;
  box-shadow: var(--shadow);
  background: #fff;
}

.switch {
  display: inline-flex;
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  margin-bottom: 10px;
}

.switch-btn {
  background: #fff;
  border: none;
  padding: 8px 12px;
  cursor: pointer;
  color: var(--text);
  font-weight: 600;
}

.switch-btn + .switch-btn { border-left: 1px solid var(--border); }

.switch-btn.active {
  background: var(--text);
  color: #fff;
}

.create-form {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.create-form input[type="text"] {
  flex: 1 1 240px;
  border: 1px solid var(--border);
  padding: 10px 12px;
  border-radius: 10px;
}

.create-form input[type="color"] {
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: transparent;
}

.create-form .primary {
  border: none;
  background: var(--text);
  color: #fff;
  padding: 10px 14px;
  border-radius: 10px;
  cursor: pointer;
  transition: transform 120ms ease;
}

.create-form .primary:active { transform: scale(0.98); }

.data-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.list {
  max-width: 880px;
  margin: 0 auto 60px;
  padding: 0 16px;
  display: grid;
  gap: 14px;
}

.card {
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow);
  padding: 14px;
  background: #fff;
}

.card-header {
  display: grid;
  grid-template-columns: 24px 1fr auto;
  gap: 10px;
  align-items: center;
  margin-bottom: 8px;
}

.card-actions .delete-btn {
  border: none;
  background: transparent;
  font-size: 16px;
  cursor: pointer;
  color: var(--muted);
}

.color-dot {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 2px solid #fff;
  box-shadow: 0 0 0 1px var(--border);
}

.label {
  margin: 0;
  font-size: 18px;
  font-weight: 600;
}

.time-display {
  font-size: 40px;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
  margin: 12px 0;
}

.session-display {
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  color: var(--muted);
  margin-top: -6px;
  margin-bottom: 8px;
}

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.controls button {
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text);
  border-radius: 10px;
  padding: 8px 12px;
  cursor: pointer;
  transition: transform 120ms ease, box-shadow 120ms ease;
}

.controls button:hover { box-shadow: 0 4px 12px rgba(0,0,0,0.08); }
.controls button:active { transform: scale(0.98); }

.add-group, .remove-group {
  display: flex;
  gap: 8px;
}

.log, .rename-history { margin-top: 10px; }

.log summary, .rename-history summary {
  cursor: pointer;
  color: var(--muted);
}

.rename-history-list, .log-list {
  list-style: none;
  padding: 8px 0 0;
  margin: 0;
  display: grid;
  gap: 6px;
}

.rename-history-list li {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 10px;
  font-size: 14px;
  color: var(--muted);
}

.log-list li {
  display: flex;
  justify-content: space-between;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 10px;
  font-size: 14px;
  color: var(--muted);
}

.meta { display: flex; align-items: center; gap: 12px; color: var(--muted); font-size: 13px; }
.progress { width: 64px; height: 64px; }
.ring-bg { stroke: var(--border); stroke-width: 8; fill: none; }
.ring-fg { stroke: var(--accent); stroke-width: 8; fill: none; transform: rotate(-90deg); transform-origin: 50% 50%; transition: stroke-dashoffset 200ms linear; }
.meta-text { display: flex; flex-direction: column; line-height: 1.25; }

.archive-panel {
  grid-column: 1 / -1;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 8px 12px;
  background: #fff;
}

.archived-list {
  list-style: none;
  margin: 8px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.archived-item {
  display: grid;
  grid-template-columns: 16px 1fr auto auto;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 8px 10px;
  background: #fff;
}

.archived-item .time {
  font-variant-numeric: tabular-nums;
  color: var(--muted);
  margin-right: 8px;
}

/* ---------- Groups ---------- */

.groups {
  max-width: 880px;
  margin: 0 auto 14px;
  padding: 0 16px;
  display: grid;
  gap: 14px;
}
.groups:empty { display: none; }

.group-card {
  border: 1px solid var(--border);
  border-left: 6px solid var(--group-color, var(--accent));
  border-radius: 14px;
  box-shadow: var(--shadow);
  padding: 14px;
  background: #fff;
}

.group-progress {
  height: 10px;
  background: var(--border);
  border-radius: 999px;
  overflow: hidden;
  margin: 6px 0 12px;
}
.group-progress-fill {
  height: 100%;
  width: 0;
  background: var(--group-color, var(--accent));
  transition: width 200ms linear;
}

.group-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 10px;
}
.group-stats > div { display: flex; flex-direction: column; gap: 2px; }
.stat-label {
  font-size: 12px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.stat-value {
  font-size: 18px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.group-status { margin-top: 10px; font-size: 14px; color: var(--muted); }
.group-status.done { color: #1a7f37; }
.group-status.overdue { color: #c62828; }
.group-members { margin-top: 6px; font-size: 13px; color: var(--muted); }

.group-picker {
  display: flex;
  width: fit-content;
  gap: 6px;
  align-items: center;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 8px;
}

.group-picker select,
.create-form select,
.create-form input[type="number"],
.create-form input[type="date"],
.create-form input[type="time"] {
  border: 1px solid var(--border);
  padding: 8px 10px;
  border-radius: 10px;
  background: #fff;
  font: inherit;
}
.create-form input[type="number"] { width: 140px; }