/**
 * Study Planner.
 *
 * Its own stylesheet, like every other tool family on the site, with its own
 * scoped palette: color-scheme.css carries only the dark overrides, so the light
 * values have to be declared here or nothing resolves.
 */

.sk-planner-root {
  --sk-ink: #28323a;
  --sk-muted: #66727b;
  --sk-accent: #68438b;
  --sk-accent-strong: #452b61;
  --sk-line: #dfe3e8;
  --sk-surface: #ffffff;
  --sk-soft: #f7f5fa;
  --sk-on-accent: #ffffff;
  --sk-error: #a6324a;

  display: block;
  box-sizing: border-box;
  margin: 20px auto 0;
  max-width: 980px;
  color: var(--sk-ink);
  font-family: inherit;
  line-height: 1.6;
}

html[data-sk-scheme="dark"] .sk-planner-root {
  --sk-ink: #e6e2ee;
  --sk-muted: #a79fba;
  --sk-accent: #cba4ec;
  --sk-accent-strong: #e3cff7;
  --sk-line: #38314a;
  --sk-surface: #221d2e;
  --sk-soft: #2b2140;
  --sk-on-accent: #2f1c40;
  --sk-error: #ff9fb0;
}

.sk-planner-root * {
  box-sizing: border-box;
}

.sk-planner-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
  gap: 22px;
  align-items: start;
}

.sk-planner-h2 {
  margin: 0 0 12px;
  color: var(--sk-ink);
  font-size: 1.02rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.sk-planner-col {
  padding: 18px 20px 20px;
  border: 1px solid var(--sk-line);
  border-radius: 10px;
  background: var(--sk-soft);
}

.sk-planner-subject {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) 132px minmax(0, 1fr) 28px;
  gap: 10px;
  align-items: end;
  margin: 0 0 10px;
}

.sk-planner-field {
  margin: 0 0 12px;
  min-width: 0;
}

.sk-planner-subject .sk-planner-field {
  margin-bottom: 0;
}

.sk-planner-label {
  display: block;
  margin: 0 0 5px;
  color: var(--sk-ink);
  font-size: 0.82rem;
  font-weight: 600;
}

.sk-planner-optional {
  color: var(--sk-muted);
  font-size: 0.76rem;
  font-weight: 400;
}

.sk-planner-input,
.sk-planner-select {
  display: block;
  width: 100%;
  min-width: 0;
  padding: 8px 10px;
  border: 1px solid var(--sk-line);
  border-radius: 8px;
  background: var(--sk-surface);
  color: var(--sk-ink);
  font-family: inherit;
  font-size: 0.9rem;
}

.sk-planner-input::placeholder {
  color: #9a90a4;
}

html[data-sk-scheme="dark"] .sk-planner-input::placeholder {
  color: #8b83a0;
}

.sk-planner-input:focus-visible,
.sk-planner-select:focus-visible,
.sk-planner-add:focus-visible,
.sk-planner-build:focus-visible,
.sk-planner-export:focus-visible,
.sk-planner-remove:focus-visible {
  border-color: var(--sk-accent);
  outline: 2px solid var(--sk-accent);
  outline-offset: -1px;
}

/* The remove control is a square that sits on the input's baseline, so it does
   not drag the row's alignment off when the labels differ in length. */
.sk-planner-remove {
  width: 28px;
  height: 34px;
  padding: 0;
  border: 1px solid transparent;
  border-radius: 8px;
  background: transparent;
  color: var(--sk-muted);
  font-size: 1.15rem;
  line-height: 1;
  cursor: pointer;
}

.sk-planner-remove:hover {
  border-color: var(--sk-line);
  background: var(--sk-surface);
  color: var(--sk-error);
}

.sk-planner-add,
.sk-planner-export {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0 13px;
  border: 1px solid var(--sk-line);
  border-radius: 8px;
  background: var(--sk-surface);
  color: var(--sk-ink);
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
}

.sk-planner-add:hover,
.sk-planner-export:hover {
  border-color: var(--sk-accent);
  color: var(--sk-accent-strong);
}

.sk-planner-build {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 40px;
  margin-top: 4px;
  padding: 0 16px;
  border: 1px solid transparent;
  border-radius: 8px;
  background: var(--sk-accent);
  color: var(--sk-on-accent);
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  transition: background-color 120ms ease;
}

.sk-planner-build:hover {
  background: var(--sk-accent-strong);
}

.sk-planner-out {
  margin-top: 22px;
}

.sk-planner-week {
  margin: 20px 0 8px;
  color: var(--sk-accent-strong);
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.sk-planner-week:first-child {
  margin-top: 0;
}

.sk-planner-days {
  margin: 0;
  padding: 0;
  list-style: none;
}

/* A day is a row, not a card. The date column is fixed so a run of days reads as
   a timetable down the page instead of a ragged list. */
.sk-planner-day {
  display: grid;
  grid-template-columns: 118px minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
  padding: 9px 0;
  border-bottom: 1px solid var(--sk-line);
}

.sk-planner-date {
  color: var(--sk-muted);
  font-size: 0.82rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.sk-planner-slots {
  margin: 0;
  padding: 0;
  list-style: none;
}

.sk-planner-slot {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 10px;
  align-items: baseline;
}

.sk-planner-slot + .sk-planner-slot {
  margin-top: 4px;
}

.sk-planner-slot-subject {
  color: var(--sk-ink);
  font-weight: 600;
}

.sk-planner-slot-meta {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 8px;
  color: var(--sk-muted);
  font-size: 0.83rem;
}

.sk-planner-slot-topics {
  color: var(--sk-muted);
}

.sk-planner-summary {
  margin: 16px 0 0;
  color: var(--sk-muted);
  font-size: 0.84rem;
}

.sk-planner-error {
  margin: 0;
  padding: 2px 0 2px 11px;
  border-left: 3px solid var(--sk-error);
  color: var(--sk-error);
  font-size: 0.88rem;
  font-weight: 600;
}

.sk-planner-export {
  margin-top: 12px;
}

.sk-planner-note {
  margin: 16px 0 0;
  color: var(--sk-muted);
  font-size: 0.79rem;
}

@media (max-width: 860px) {
  .sk-planner-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 620px) {
  .sk-planner-subject {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) 28px;
  }

  .sk-planner-subject .sk-planner-field:nth-child(3) {
    grid-column: 1 / 3;
  }

  .sk-planner-day {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .sk-planner-build {
    transition: none;
  }
}