:root {
  --bg: #f4f1ea;
  --panel: #ffffff;
  --ink: #2b2620;
  --ink-soft: #6b6255;
  --line: #e2dccc;
  --accent: #a8461e;
  --accent-ink: #ffffff;
  --stage1: #f5b942; /* 橙 */
  --stage1-bg: #fff4dc;
  --stage2: #e8768c; /* 桃 */
  --stage2-bg: #fce7ea;
  --stage3: #2d4373; /* 紺 */
  --stage3-bg: #e3e9f5;
  --stage4: #3f8f5f; /* 緑 */
  --stage4-bg: #e4f3ea;
  --stage5: #6a4c93; /* 紫 */
  --stage5-bg: #ece5f6;
  --danger: #b3261e;
  --radius: 10px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Hiragino Sans", "Yu Gothic", "Meiryo", system-ui, sans-serif;
  background: var(--bg);
  color: var(--ink);
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.topbar {
  background: var(--ink);
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 10;
}
.topbar-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}
.brand { color: #fff; font-weight: 700; font-size: 1.05rem; }
.nav { display: flex; gap: 16px; align-items: center; flex-wrap: wrap; font-size: 0.92rem; }
.nav a, .nav button.linklike { color: #f2ede0; }
.nav .user-tag { color: #b9b2a0; margin-right: 4px; }
button.linklike {
  background: none; border: none; cursor: pointer; font: inherit; padding: 0;
  text-decoration: underline;
}

.app {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 20px 60px;
}

h1 { font-size: 1.4rem; margin: 0 0 4px; }
h2 { font-size: 1.15rem; margin: 0 0 12px; }
.subtitle { color: var(--ink-soft); margin: 0 0 20px; font-size: 0.92rem; }

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  margin-bottom: 20px;
}

.btn {
  display: inline-block;
  background: var(--accent);
  color: var(--accent-ink);
  border: none;
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 0.9rem;
  cursor: pointer;
}
.btn:hover { opacity: 0.9; }
.btn.secondary {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
}
.btn.danger { background: var(--danger); }
.btn.small { padding: 4px 10px; font-size: 0.8rem; }

.form-row { margin-bottom: 12px; display: flex; flex-direction: column; gap: 4px; }
.form-row label { font-size: 0.82rem; color: var(--ink-soft); }
.form-row input, .form-row select {
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  font-size: 0.95rem;
  font-family: inherit;
}
.form-inline { display: flex; gap: 10px; align-items: flex-end; flex-wrap: wrap; }

table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--line); }
th { color: var(--ink-soft); font-weight: 600; font-size: 0.82rem; }
tr:hover td { background: #faf8f2; }

.error { color: var(--danger); font-size: 0.88rem; margin: 8px 0; }
.hint { color: var(--ink-soft); font-size: 0.85rem; }

.progress-bar {
  background: #e9e4d6;
  border-radius: 20px;
  height: 8px;
  overflow: hidden;
  width: 100%;
}
.progress-bar > span {
  display: block;
  height: 100%;
  background: var(--accent);
}
.progress-cell { display: flex; align-items: center; gap: 8px; min-width: 120px; }
.progress-cell .pct { font-size: 0.8rem; color: var(--ink-soft); min-width: 32px; text-align: right; }

.login-wrap { max-width: 380px; margin: 60px auto; }

.toast {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--ink);
  color: #fff;
  padding: 10px 18px;
  border-radius: 8px;
  font-size: 0.88rem;
  z-index: 100;
}
.toast.error { background: var(--danger); }

/* ロードマップボード */
.year-tabs { display: flex; gap: 8px; margin-bottom: 18px; flex-wrap: wrap; }
.year-tab {
  padding: 8px 16px;
  border-radius: 20px;
  border: 1px solid var(--line);
  background: var(--panel);
  cursor: pointer;
  font-size: 0.9rem;
}
.year-tab.active { background: var(--ink); color: #fff; border-color: var(--ink); }
.year-theme { color: var(--ink-soft); font-size: 0.88rem; margin-bottom: 18px; }

.stage-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(190px, 1fr));
  gap: 14px;
  overflow-x: auto;
}
@media (max-width: 1000px) {
  .stage-grid { grid-template-columns: repeat(5, 220px); }
}

.stage-col { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); }
.stage-head {
  padding: 10px 12px;
  color: #fff;
  font-size: 0.85rem;
}
.stage-head .stage-no { font-weight: 700; font-size: 0.95rem; display: block; }
.stage-col[data-stage="1"] .stage-head { background: var(--stage1); color: #4a3200; }
.stage-col[data-stage="2"] .stage-head { background: var(--stage2); color: #4a1522; }
.stage-col[data-stage="3"] .stage-head { background: var(--stage3); }
.stage-col[data-stage="4"] .stage-head { background: var(--stage4); }
.stage-col[data-stage="5"] .stage-head { background: var(--stage5); }

.stage-body { padding: 10px; background: #fff; }
.event-box {
  font-size: 0.78rem;
  padding: 8px 10px;
  border-radius: 6px;
  margin-bottom: 10px;
  font-weight: 600;
  line-height: 1.4;
}
.stage-col[data-stage="1"] .event-box, .stage-col[data-stage="1"] .stage-body { background: var(--stage1-bg); }
.stage-col[data-stage="2"] .event-box, .stage-col[data-stage="2"] .stage-body { background: var(--stage2-bg); }
.stage-col[data-stage="3"] .event-box, .stage-col[data-stage="3"] .stage-body { background: var(--stage3-bg); }
.stage-col[data-stage="4"] .event-box, .stage-col[data-stage="4"] .stage-body { background: var(--stage4-bg); }
.stage-col[data-stage="5"] .event-box, .stage-col[data-stage="5"] .stage-body { background: var(--stage5-bg); }

.item-group-label {
  font-size: 0.72rem;
  color: var(--ink-soft);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin: 10px 0 4px;
}
.item-group-label:first-child { margin-top: 0; }

.check-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 0.85rem;
  padding: 5px 4px;
  border-radius: 4px;
  cursor: pointer;
}
.check-item:hover { background: rgba(0,0,0,0.04); }
.check-item input { margin-top: 3px; }
.check-item.done span.label { text-decoration: line-through; color: var(--ink-soft); }
.check-item .meta { display: block; font-size: 0.7rem; color: var(--ink-soft); }

.student-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}
.student-head .summary { display: flex; gap: 18px; flex-wrap: wrap; margin-top: 8px; }
.summary-box { min-width: 140px; }
.summary-box .num { font-size: 1.3rem; font-weight: 700; }

.tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 0.75rem;
  background: #eee7d6;
  color: #6b5a2a;
}
.tag.status-graduated { background: #dfe8df; color: #2f5c34; }
.tag.status-withdrawn { background: #f0dede; color: #7a2b2b; }

.actions-row { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 16px; }