/*
 * classroom.css: the Classroom page (part of the phrases add-on).
 * Uses the same variables as base.css, so it follows your theme and dark mode.
 * Each class card takes an accent colour in turn; change them here.
 */

:root {
  --class-accent-0: color-mix(in srgb, #16a34a 75%, var(--color-text));  /* 1st class: Beginners */
  --class-accent-1: color-mix(in srgb, #2563eb 75%, var(--color-text));  /* 2nd class: Intermediate */
  --class-accent-2: color-mix(in srgb, #9333ea 75%, var(--color-text));  /* 3rd class: Advanced */
  --class-accent-3: color-mix(in srgb, #ca8a04 75%, var(--color-text));
  --live: #1f9d55;
}

/* Highlight "Classroom" in the header on this page. */
.page--classroom .site-nav__link[data-nav="classroom"] {
  color: var(--color-accent);
  background: var(--color-accent-soft);
}

.class-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 18px;
  align-items: start;
}

.class-card {
  --accent: var(--class-accent-0);
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 22px 22px 20px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-top: 5px solid var(--accent);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.class-card--a1 { --accent: var(--class-accent-1); }
.class-card--a2 { --accent: var(--class-accent-2); }
.class-card--a3 { --accent: var(--class-accent-3); }
.class-card.is-live { border-color: var(--live); box-shadow: 0 0 0 3px color-mix(in srgb, var(--live) 25%, transparent); }

.class-card__eyebrow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--color-muted);
  font-style: italic;
}
.class-card__eyebrow:empty { display: none; }
.class-card__cefr {
  padding: 1px 9px;
  font-style: normal;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 13%, transparent);
  border-radius: 999px;
}
.class-card__title {
  margin-top: 6px;
  font-family: var(--font-display);
  font-size: 1.7rem;
  letter-spacing: -0.01em;
}
.class-card__summary { margin-top: 8px; color: var(--color-muted); }

.class-card__live {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 10px;
  padding: 3px 12px 3px 10px;
  font-size: 0.82rem;
  font-weight: 700;
  color: #fff;
  background: var(--live);
  border-radius: 999px;
}
.class-card__live::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #fff;
  animation: class-pulse 1.6s ease-in-out infinite;
}
@keyframes class-pulse { 50% { opacity: 0.3; } }
@media (prefers-reduced-motion: reduce) { .class-card__live::before { animation: none; } }

.class-card__facts {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 14px 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}
.class-card__facts:not(:has(.class-card__fact)) { display: none; }
.class-card__fact { display: grid; gap: 1px; }
.class-card__fact dt {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-muted);
}
.class-card__fact dd { margin: 0; font-weight: 600; }
.class-card__zone { font-weight: 400; color: var(--color-muted); }
.class-card__yours { display: block; font-weight: 400; font-size: 0.88rem; color: var(--color-muted); }

.class-card__heading {
  margin-bottom: 6px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-muted);
}
.class-card__topics,
.class-card__materials { margin: 0; padding-left: 1.2em; }
.class-card__topics li + li,
.class-card__materials li + li { margin-top: 3px; }
.class-card__topics li::marker { color: var(--accent); }
.class-card__notes { font-size: 0.9rem; font-style: italic; color: var(--color-muted); }

.class-card__footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: auto;
  padding-top: 4px;
}
.class-card__join {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  border-color: var(--accent);
}
.class-card__join::before {
  content: "";
  width: 18px;
  height: 12px;
  border-radius: 3px;
  background:
    linear-gradient(currentColor, currentColor) left / 11px 100% no-repeat,
    conic-gradient(from 225deg at 100% 50%, currentColor 0 90deg, transparent 0) right / 7px 100% no-repeat;
  opacity: 0.95;
}
.class-card__join:hover { background: color-mix(in srgb, var(--accent) 80%, #000); border-color: transparent; }
.class-card__join.is-ready { background: var(--live); border-color: var(--live); }
.class-card__joins { display: grid; gap: 6px; justify-items: start; }
.class-card__alt { font-size: 0.85rem; }
.class-card__count {
  white-space: nowrap;
  margin-left: 4px;
  padding: 1px 8px;
  font-size: 0.75rem;
  color: var(--accent);
  background: #fff;
  border-radius: 999px;
}
.class-check { margin-top: 2px; }
.class-card__nolink { font-size: 0.9rem; color: var(--color-muted); font-style: italic; }
.class-card__tools { display: inline-flex; gap: 4px; }
.class-card__tool { padding: 6px 12px; font-size: 0.85rem; }

/* How to join */
.join-help {
  margin-top: 32px;
  padding: 22px 24px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}
.join-help__steps { margin: 0; padding-left: 1.3em; display: grid; gap: 8px; }

/* Editing dialog extras */
.pdialog__fields:has(.pdialog__field--half) { grid-template-columns: 1fr 1fr; }
.pdialog__fields > .pdialog__field:not(.pdialog__field--half) { grid-column: 1 / -1; }
.class-days { display: flex; flex-wrap: wrap; gap: 6px; margin: 0; padding: 0; border: 0; }
.class-days legend { width: 100%; margin-bottom: 4px; }
.class-days__day {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 10px;
  font-size: 0.9rem;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  cursor: pointer;
}
.class-days__day:has(input:checked) { border-color: var(--color-accent); background: var(--color-accent-soft); }
.class-days__day input { accent-color: var(--color-accent); }
.pdialog:has(.class-days) { width: min(620px, calc(100vw - 32px)); max-height: calc(100vh - 32px); }

@media (max-width: 600px) {
  .pdialog__fields:has(.pdialog__field--half) { grid-template-columns: 1fr; }
  .class-card { padding: 18px; }
  .class-card__join { width: 100%; justify-content: center; }
  .class-card__joins { justify-items: stretch; width: 100%; }
  .class-card__alt { text-align: center; }
}