:root {
  --bg: #ffffff;
  --panel: #ffffff;
  --line: #d8d0c2;
  --text: #1f2a34;
  --muted: #5b6a77;
  --accent: #004e7c;
  --accent-soft: #d7e9f4;
  --ok: #1b7f5f;
  --warn: #8c3f1a;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "IBM Plex Sans", "Hiragino Kaku Gothic ProN", sans-serif;
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
}

.layout {
  width: min(980px, calc(100% - 2rem));
  margin: 2rem auto 3rem;
  display: grid;
  gap: 1rem;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  grid-template-areas:
    "panel panel"
    "student admin"
    "board board";
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 0.8rem;
  box-shadow: 0 8px 26px rgb(0 0 0 / 6%);
}

#student-panel {
  grid-area: student;
  align-self: start;
}

#admin-panel {
  grid-area: admin;
  align-self: start;
}

#board-panel {
  grid-area: board;
}

.layout > .panel:first-child {
  grid-area: panel;
}

.panel-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.panel-header h1 {
  margin-bottom: 0;
}

.panel-notice {
  max-width: 30rem;
  margin: 0;
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #f8fbfd;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.5;
}

@media (max-width: 840px) {
  .layout {
    grid-template-columns: 1fr;
    grid-template-areas:
      "panel"
      "student"
      "board"
      "admin";
  }

  .panel-header {
    flex-direction: column;
  }

  .compact-form {
    grid-template-columns: 1fr;
  }

  .student-main {
    grid-template-columns: 1fr;
  }
}

h1,
h2,
h3 {
  margin: 0 0 0.5rem;
  font-family: "M PLUS 1p", "Hiragino Kaku Gothic ProN", sans-serif;
}

.muted {
  margin-top: 0;
  color: var(--muted);
}

.form-grid {
  display: grid;
  gap: 0.75rem;
}

.compact-form {
  margin-bottom: 0.9rem;
  align-items: end;
  grid-template-columns: minmax(0, 1fr) auto;
}

.student-main {
  display: grid;
  gap: 0.9rem;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  align-items: start;
}

.current-choices-panel {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.6rem 0.65rem;
}

.current-choices-panel h3 {
  margin-bottom: 0.45rem;
}

.choice-actions {
  display: flex;
  gap: 0.6rem;
}

.choice-actions button {
  flex: 1;
}

.row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 0.75rem;
}

.row.wrap {
  flex-wrap: wrap;
}

label {
  display: grid;
  gap: 0.35rem;
  font-size: 0.92rem;
}

input,
select,
button {
  font: inherit;
}

input,
select {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.55rem 0.6rem;
  background: #fff;
}

button {
  border: none;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  padding: 0.6rem 0.85rem;
  cursor: pointer;
}

button.secondary {
  background: #51697c;
}

button:hover {
  filter: brightness(0.95);
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 0.5rem;
}

th,
td {
  border-bottom: 1px solid var(--line);
  text-align: left;
  padding: 0.55rem 0.4rem;
}

th {
  background: var(--accent-soft);
}

.lab-name-with-history {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.25rem 0.7rem;
}

.lab-lead-label {
  color: var(--accent);
  font-weight: 700;
  white-space: nowrap;
}

.last-year-info {
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 400;
  line-height: 1.45;
}

.list {
  display: grid;
  gap: 0.55rem;
}

.lab-board-list {
  display: grid;
  gap: 0.8rem;
}

.lab-board-item {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.55rem 0.65rem;
}

.lab-board-item h3 {
  margin-bottom: 0.25rem;
}

.choice-item {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.5rem 0.6rem;
}

.p1 {
  border-left: 6px solid #cf2f2f;
}

.p2 {
  border-left: 6px solid #d7780f;
}

.p3 {
  border-left: 6px solid #2f70c4;
}

.p4 {
  border-left: 6px solid #2a8b73;
}

.priority-row.p1 td {
  background: #fff1f1;
}

.priority-row.p2 td {
  background: #fff4e8;
}

.priority-row.p3 td {
  background: #edf4ff;
}

.priority-row.p4 td {
  background: #edf9f5;
}

.hidden {
  display: none;
}

.message {
  min-height: 1.3rem;
  margin-bottom: 0;
}

.message.ok {
  color: var(--ok);
}

.message.warn {
  color: var(--warn);
}