/* ===== デザイントークン ===== */
:root {
  --bg: #f6f7f9;
  --bg-tint: #eef1f6;
  --panel: #ffffff;
  --border: #e6e9ef;
  --border-strong: #d7dce5;
  --text: #1c2027;
  --text-soft: #4d5563;
  --muted: #8a919e;
  --accent: #4a5fd4;
  --accent-hover: #3f52bd;
  --accent-soft: #eef1fe;
  --accent-border: #d5dcfb;
  --done: #2f8f5b;
  --done-soft: #e8f5ed;
  --danger: #c5453f;
  --danger-soft: #fdecec;
  --field: #fafbfd;
  --shadow-sm: 0 1px 2px rgba(20, 26, 40, 0.05);
  --shadow-md: 0 1px 3px rgba(20, 26, 40, 0.06), 0 8px 24px -12px rgba(20, 26, 40, 0.14);
  --radius: 14px;
  --radius-sm: 9px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161b;
    --bg-tint: #1a1d24;
    --panel: #1c1f26;
    --border: #2b3038;
    --border-strong: #383e49;
    --text: #e8eaee;
    --text-soft: #b6bcc7;
    --muted: #838b98;
    --accent: #8394f0;
    --accent-hover: #93a1f4;
    --accent-soft: #242a3d;
    --accent-border: #38406099;
    --done: #6cc492;
    --done-soft: #1e2f26;
    --danger: #e58079;
    --danger-soft: #34222180;
    --field: #22262e;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 1px 3px rgba(0, 0, 0, 0.35), 0 10px 28px -14px rgba(0, 0, 0, 0.7);
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background:
    radial-gradient(1100px 420px at 50% -180px, var(--bg-tint), transparent 70%),
    var(--bg);
  color: var(--text);
  font-family: "Yu Gothic UI", "Hiragino Sans", "Noto Sans JP", "Segoe UI", system-ui, sans-serif;
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

svg { width: 1em; height: 1em; display: block; }

/* ===== ヘッダー ===== */
.header {
  background: color-mix(in srgb, var(--panel) 82%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.header-inner {
  max-width: 1040px;
  margin: 0 auto;
  padding: 14px 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  width: 38px;
  height: 38px;
  flex: none;
  display: grid;
  place-items: center;
  border-radius: 11px;
  background: linear-gradient(140deg, var(--accent), color-mix(in srgb, var(--accent) 62%, #9b6cf0));
  color: #fff;
  font-size: 21px;
  box-shadow: var(--shadow-sm);
}

.brand-text h1 {
  margin: 0;
  font-size: 17px;
  font-weight: 650;
  letter-spacing: 0.02em;
}

.brand-sub {
  margin: 0;
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.03em;
}

/* ===== レイアウト ===== */
.container {
  max-width: 1040px;
  margin: 0 auto;
  padding: 26px 20px 72px;
}

.columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  align-items: start;
}

/* ===== ダッシュボード ===== */
.dashboard {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-bottom: 22px;
}

.stat {
  position: relative;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.stat:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.stat-icon {
  position: absolute;
  top: 15px;
  right: 16px;
  font-size: 19px;
  color: var(--muted);
  opacity: 0.65;
}

.stat-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.stat-figure {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-top: 2px;
}

.stat-value {
  font-size: 30px;
  font-weight: 680;
  line-height: 1.25;
  letter-spacing: -0.01em;
  font-variant-numeric: tabular-nums;
}

.stat-unit {
  font-size: 12px;
  color: var(--muted);
}

.stat-accent {
  background: linear-gradient(165deg, var(--accent-soft), var(--panel) 78%);
  border-color: var(--accent-border);
}

.stat-accent .stat-value,
.stat-accent .stat-icon { color: var(--accent); opacity: 1; }

/* 最新の振り返り（ダッシュボード内で横一杯） */
.latest {
  grid-column: 1 / -1;
  background: var(--panel);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 14px 18px;
  box-shadow: var(--shadow-sm);
}

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

.latest-icon {
  font-size: 15px;
  color: var(--accent);
}

.latest-label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.latest-week {
  font-size: 12px;
  color: var(--accent);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.latest-comment {
  margin: 5px 0 0;
  font-size: 14px;
  color: var(--text-soft);
  white-space: pre-wrap;
  word-break: break-word;
  /* 長い振り返りはダッシュボードでは 3 行までにとどめる */
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.latest.is-empty {
  border-left-color: var(--border-strong);
}

.latest.is-empty .latest-icon { color: var(--muted); }
.latest.is-empty .latest-comment { color: var(--muted); }

/* ===== パネル ===== */
.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px 22px;
  box-shadow: var(--shadow-sm);
}

.panel-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  padding-bottom: 12px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.panel-head h2 {
  margin: 0;
  font-size: 15px;
  font-weight: 650;
  letter-spacing: 0.03em;
}

.count {
  font-size: 12px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.panel-wide { margin-top: 18px; }

/* 振り返り: 左に入力、右に一覧 */
.reflection-layout {
  display: grid;
  grid-template-columns: minmax(260px, 360px) 1fr;
  gap: 22px;
  align-items: start;
}

.reflection-layout .form { margin-bottom: 0; }

/* ===== フォーム ===== */
.form {
  display: flex;
  flex-direction: column;
  gap: 9px;
  margin-bottom: 18px;
}

.form-inline { flex-direction: row; }
.form-inline input { flex: 1; min-width: 0; }

.field {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.field-label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.hint {
  margin: -2px 0 0;
  font-size: 12px;
  color: var(--muted);
  min-height: 1em;
}

input, textarea, select {
  font: inherit;
  color: inherit;
  padding: 9px 12px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: var(--field);
  resize: vertical;
  transition: border-color 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

select {
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  padding-right: 32px;
  background-image: linear-gradient(45deg, transparent 50%, currentColor 50%), linear-gradient(135deg, currentColor 50%, transparent 50%);
  background-position: right 15px center, right 10px center;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
}

input::placeholder, textarea::placeholder { color: var(--muted); }

input:focus, textarea:focus, select:focus {
  outline: none;
  /* select の矢印（background-image）を消さないよう色だけ変える */
  background-color: var(--panel);
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 16%, transparent);
}

.form-actions {
  display: flex;
  justify-content: flex-end;
}

button {
  font: inherit;
  cursor: pointer;
  border: none;
  border-radius: var(--radius-sm);
  transition: background 0.15s ease, color 0.15s ease, box-shadow 0.15s ease, opacity 0.15s ease;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 16px;
  background: var(--accent);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  box-shadow: var(--shadow-sm);
}

.btn-primary svg { font-size: 15px; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-primary:active { transform: translateY(1px); }

/* ===== 一覧 ===== */
.list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.item {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  background: var(--panel);
  transition: border-color 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
  animation: appear 0.22s ease both;
}

.item:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow-sm);
}

@keyframes appear {
  from { opacity: 0; transform: translateY(-3px); }
  to { opacity: 1; transform: none; }
}

.item-title {
  font-weight: 620;
  letter-spacing: 0.01em;
  word-break: break-word;
}

.item-body {
  margin-top: 5px;
  color: var(--text-soft);
  font-size: 14px;
  white-space: pre-wrap;
  word-break: break-word;
}

.item-meta {
  margin-top: 9px;
  font-size: 11.5px;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 5px 12px;
  flex-wrap: wrap;
  font-variant-numeric: tabular-nums;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 1px 9px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  background: var(--bg-tint);
  color: var(--text-soft);
}

.badge::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: currentColor;
}

.badge-done {
  background: var(--done-soft);
  color: var(--done);
}

/* メモは左に細いアクセントを添える */
#memo-list .item {
  border-left: 3px solid color-mix(in srgb, var(--accent) 35%, var(--border));
}

/* ===== タスク行 ===== */
.task {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.task-main { flex: 1; min-width: 0; }

/* チェックボックス */
.task input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  width: 19px;
  height: 19px;
  margin: 2px 0 0;
  flex: none;
  border: 1.6px solid var(--border-strong);
  border-radius: 6px;
  background: var(--field);
  cursor: pointer;
  display: grid;
  place-content: center;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.task input[type="checkbox"]:hover { border-color: var(--accent); }

.task input[type="checkbox"]::after {
  content: "";
  width: 10px;
  height: 6px;
  border: 2px solid #fff;
  border-top: 0;
  border-right: 0;
  transform: rotate(-45deg) scale(0.5);
  opacity: 0;
  transition: opacity 0.15s ease, transform 0.15s ease;
  margin-top: -2px;
}

.task input[type="checkbox"]:checked {
  background: var(--done);
  border-color: var(--done);
}

.task input[type="checkbox"]:checked::after {
  opacity: 1;
  transform: rotate(-45deg) scale(1);
}

.task input[type="checkbox"]:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 22%, transparent);
}

.task.done {
  background: color-mix(in srgb, var(--bg-tint) 55%, var(--panel));
}

.task.done .item-title {
  text-decoration: line-through;
  text-decoration-thickness: 1px;
  color: var(--muted);
  font-weight: 500;
}

/* アイコンボタンは普段は控えめに、ホバーではっきり見せる */
.btn-icon,
.btn-delete {
  flex: none;
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  font-size: 15px;
  background: transparent;
  color: var(--muted);
  opacity: 0.45;
}

.task:hover .btn-delete,
.reflection:hover .btn-icon,
.btn-icon:focus-visible,
.btn-delete:focus-visible { opacity: 1; }

.btn-icon:hover {
  background: var(--accent-soft);
  color: var(--accent);
}

.btn-icon:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 20%, transparent);
}

.btn-delete:hover,
.btn-icon.btn-delete:hover {
  background: var(--danger-soft);
  color: var(--danger);
}

.btn-delete:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--danger) 20%, transparent);
}

/* 振り返りカード */
.reflection-head {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 2px;
}

.reflection-head .item-title {
  font-variant-numeric: tabular-nums;
}

.reflection-actions {
  margin-left: auto;
  display: flex;
  gap: 2px;
}

.badge-current {
  background: var(--accent-soft);
  color: var(--accent);
}

.reflection .item-body { margin-top: 4px; }

/* ===== 空の状態 ===== */
.empty {
  display: grid;
  place-items: center;
  gap: 6px;
  padding: 26px 10px;
  color: var(--muted);
  font-size: 13px;
  text-align: center;
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-sm);
}

.empty svg {
  font-size: 22px;
  opacity: 0.55;
}

/* ===== レスポンシブ ===== */
@media (max-width: 860px) {
  .columns { grid-template-columns: 1fr; }
  .reflection-layout { grid-template-columns: 1fr; gap: 18px; }
}

@media (max-width: 560px) {
  .dashboard { grid-template-columns: 1fr; gap: 10px; }
  .stat { padding: 13px 16px; }
  .stat-value { font-size: 25px; }
  .container { padding: 18px 14px 56px; }
  .btn-delete { opacity: 0.7; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}