:root,
[data-theme="day"] {
  --navy: #0b2545;
  --navy-soft: #16365c;
  --gold: #c9a227;
  --gold-soft: #f3e6b5;
  --ink: #122033;
  --muted: #5b6b7c;
  --paper: #f6f3ea;
  --card: #fffdf8;
  --line: #d8d0be;
  --danger: #9b1d2a;
  --danger-bg: #fdecee;
  --ok: #1d6b4f;
  --ok-bg: #e7f6ef;
  --shadow: 0 18px 40px rgba(11, 37, 69, 0.08);
  --page-bg:
    radial-gradient(circle at top right, #f8e7b0 0, transparent 28%),
    linear-gradient(180deg, #eef3f8 0%, var(--paper) 40%);
  --heading: #0b2545;
  --input-bg: #fff;
  --chip-muted: #f4efe3;
  --table-line: #eee4cc;
  --time-cell: #f8f3e6;
  --block-bg: #16365c;
  --toggle-bg: #0b2545;
  --toggle-ink: #fff;
  --strong: #0b2545;
  color-scheme: light;
}

[data-theme="night"] {
  --navy: #8eb4e0;
  --navy-soft: #c5d4e8;
  --gold: #e0c36a;
  --gold-soft: #3a3116;
  --ink: #e8eef6;
  --muted: #93a0b3;
  --paper: #070b14;
  --card: #121826;
  --line: #2a3344;
  --danger: #ff8a96;
  --danger-bg: #3a151b;
  --ok: #7ee0b4;
  --ok-bg: #123226;
  --shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
  --page-bg:
    radial-gradient(circle at top right, #2a2340 0, transparent 32%),
    linear-gradient(180deg, #0a0f1c 0%, #070b14 50%);
  --heading: #f3f6fb;
  --input-bg: #0d1320;
  --chip-muted: #1a2233;
  --table-line: #2a3344;
  --time-cell: #1a2233;
  --block-bg: #2d4a72;
  --toggle-bg: #e0c36a;
  --toggle-ink: #0b1020;
  --strong: #2d4a72;
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Outfit, sans-serif;
  color: var(--ink);
  background: var(--page-bg);
  min-height: 100vh;
}

.page {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0 48px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: end;
  margin-bottom: 22px;
}

.eyebrow {
  margin: 0 0 4px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-size: 12px;
  color: var(--gold);
  font-weight: 700;
}

h1,
h2 {
  font-family: "Source Serif 4", serif;
  margin: 0;
}

h1 {
  font-size: clamp(28px, 4vw, 42px);
  color: var(--heading);
}

h2 {
  font-size: 22px;
  color: var(--heading);
}

.topbar-end {
  display: grid;
  justify-items: end;
  gap: 10px;
}

.theme-toggle {
  border: 1px solid var(--line);
  background: var(--toggle-bg);
  color: var(--toggle-ink);
  border-radius: 999px;
  padding: 8px 14px;
  font-weight: 700;
}

.subtitle {
  max-width: 340px;
  margin: 0;
  color: var(--muted);
  text-align: right;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 18px;
}

.nav-link {
  text-decoration: none;
  color: var(--navy-soft);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 14px;
  font-weight: 600;
}

.nav-link.current {
  background: var(--strong);
  color: #fff;
  border-color: var(--strong);
}

.layout {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 18px;
}

.panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 22px;
  box-shadow: var(--shadow);
  padding: 20px;
}

.form-panel form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 16px;
}

label,
legend {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--navy-soft);
}

input[type="text"],
input[type="time"],
select {
  width: 100%;
  margin-top: 6px;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 11px 12px;
  font: inherit;
  color: var(--ink);
  background: var(--input-bg);
}

input:focus {
  outline: 2px solid #c9a22755;
  border-color: var(--gold);
}

.full {
  grid-column: 1 / -1;
}

fieldset {
  border: 1px dashed var(--line);
  border-radius: 16px;
  padding: 12px;
}

.presets,
.day-grid,
.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.presets {
  margin: 8px 0 10px;
}

.chip,
.btn,
.mini {
  border: 0;
  cursor: pointer;
  font: inherit;
}

.chip {
  background: var(--gold-soft);
  color: var(--navy);
  border-radius: 999px;
  padding: 6px 12px;
  font-weight: 600;
}

.chip.active {
  background: var(--strong);
  color: #fff;
}

.day {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--chip-muted);
  border-radius: 999px;
  padding: 6px 10px;
  font-weight: 500;
}

.btn {
  border-radius: 12px;
  padding: 11px 16px;
  font-weight: 700;
}

.primary {
  background: var(--strong);
  color: #fff;
}

.ghost {
  background: transparent;
  color: var(--muted);
}

.alert {
  grid-column: 1 / -1;
  border-radius: 12px;
  padding: 10px 12px;
  font-size: 14px;
}

.alert.error {
  background: var(--danger-bg);
  color: var(--danger);
}

.alert.ok {
  background: var(--ok-bg);
  color: var(--ok);
}

.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.count {
  color: var(--muted);
  font-size: 13px;
}

.week-wrap {
  overflow: auto;
}

.week-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 640px;
  font-size: 12px;
}

.week-table th,
.week-table td {
  border: 1px solid var(--table-line);
  padding: 6px;
  vertical-align: top;
  min-width: 78px;
}

.week-table th {
  background: var(--strong);
  color: #fff;
  font-weight: 600;
}

.week-table td.time-cell {
  background: var(--time-cell);
  font-weight: 600;
  color: var(--navy-soft);
  white-space: nowrap;
  min-width: 132px;
}

.week-table td.empty-week {
  text-align: center;
  color: var(--muted);
  padding: 22px 10px;
}

.block {
  background: var(--block-bg);
  color: #fff;
  border-radius: 8px;
  padding: 6px;
  margin-bottom: 4px;
}

.block small {
  display: block;
  opacity: 0.8;
}

.block.lab {
  background: #6b4a16;
}

[data-theme="night"] .block.lab {
  background: #8a6a2a;
}

.lab-check {
  width: fit-content;
}

.lab-under {
  margin-left: 18px;
  border-style: dashed;
}

.conflict-panel {
  margin-top: 18px;
  scroll-margin-top: 20px;
}

.conflict-list {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}

.conflict-card {
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid var(--danger);
  background: var(--danger-bg);
}

.conflict-card h3 {
  margin: 0 0 6px;
  font-size: 16px;
  color: var(--danger);
}

.conflict-card p {
  margin: 4px 0 0;
  font-size: 14px;
}

.conflict-days {
  font-weight: 700;
}

.changes-list .change-batch {
  margin: 0 0 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.changes-list time {
  display: block;
  font-weight: 700;
  color: var(--heading);
  margin-bottom: 6px;
}

.changes-list .change-added {
  color: var(--ok);
}

.changes-list .change-removed {
  color: var(--danger);
}

.changes-list .change-updated {
  color: #b8860b;
}

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

.slot-list {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}

.slot-card {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  align-items: center;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 14px;
}

.slot-card h3 {
  margin: 0;
  font-size: 16px;
}

.slot-card p {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.mini {
  background: var(--danger-bg);
  color: var(--danger);
  border-radius: 10px;
  padding: 8px 10px;
  font-weight: 600;
}

.empty {
  color: var(--muted);
}

.search-label {
  display: block;
  margin-bottom: 14px;
}

.catalog-list {
  display: grid;
  gap: 18px;
}

.course-group {
  display: grid;
  gap: 10px;
}

.course-title {
  margin: 0;
  font-size: 18px;
  color: var(--heading);
}

.course-title small {
  font-weight: 500;
  color: var(--muted);
  font-size: 13px;
}

.priority-card {
  grid-template-columns: auto 1fr auto;
}

.rank {
  display: grid;
  place-items: center;
  min-width: 42px;
  height: 42px;
  border-radius: 12px;
  background: var(--gold-soft);
  color: var(--heading);
  font-weight: 700;
}

.mini.rank-btn {
  background: var(--chip-muted);
  color: var(--ink);
}

.card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: end;
}

.mini.use {
  background: var(--ok-bg);
  color: var(--ok);
}

@media (max-width: 900px) {
  .layout,
  .form-panel form,
  .topbar {
    display: block;
  }

  .subtitle,
  .schedule-panel,
  .form-panel {
    margin-top: 16px;
  }

  .topbar-end,
  .subtitle {
    justify-items: start;
    text-align: left;
  }
}