/* Lab home start screen (src/views/home-start.js): grade ruler, language, Continue, the four skills, and one door
   each for teachers and families. Tokens only (ds.css). The ruler is the one distinctive element: each grade group
   is as wide as the grades it covers, on a K-8 scale. */

.lph {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  grid-template-areas:
    "intro student"
    "lang student"
    "doors student";
  grid-template-rows: auto auto 1fr;
  gap: var(--s-5) clamp(1.25rem, 3.5vw, 3rem);
  align-items: start;
  margin-top: var(--s-2);
  padding: clamp(1.1rem, 3vw, 2.5rem);
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  background: var(--surface);
  box-shadow: var(--shadow);
}
.lph-intro {
  grid-area: intro;
}
.lph-student {
  grid-area: student;
}
.lph-lang {
  grid-area: lang;
  margin-top: 0;
}
.lph-doors {
  grid-area: doors;
}
.lph h1 {
  margin: 0 0 var(--s-3);
  max-width: 20ch;
  font: 600 clamp(2rem, 1.3rem + 2.6vw, 3.25rem) / 1.05 var(--font-display);
  letter-spacing: -0.025em;
  color: var(--ink);
}
.lph-lead {
  max-width: 46ch;
  margin: 0 0 var(--s-5);
  color: var(--ink-2);
  font-size: 1.125rem;
  line-height: 1.5;
}
.lph-setting {
  margin-top: var(--s-4);
}
.lph-label {
  margin: 0 0 var(--s-2);
  color: var(--ink-2);
  font: 700 0.9375rem/1.3 var(--font);
}

/* ── grade ruler ─────────────────────────────────────────────────────────── */
.lph-ruler {
  position: relative;
  display: flex;
  max-width: 34rem;
  padding-top: 0.6rem;
}
.lph-ruler::before {
  /* the K-8 scale: nine grades, one tick each */
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 0.45rem;
  border-top: 2px solid var(--line-strong);
  background: repeating-linear-gradient(90deg, var(--line-strong) 0 2px, transparent 2px calc(100% / 9));
}
.lph-step {
  flex: var(--span) 1 0;
  display: grid;
  place-items: center;
  align-content: center;
  min-width: 0;
  min-height: 3.5rem;
  margin-inline-start: -1.5px;
  padding: 0.3rem 0.25rem;
  border: 1.5px solid var(--line-strong);
  background: var(--surface);
  color: var(--ink);
  font: 700 1.125rem/1.1 var(--font);
  cursor: pointer;
}
.lph-step:first-child {
  margin-inline-start: 0;
  border-start-start-radius: var(--radius-sm);
  border-end-start-radius: var(--radius-sm);
}
.lph-step:last-child {
  border-start-end-radius: var(--radius-sm);
  border-end-end-radius: var(--radius-sm);
}
.lph-step:hover {
  background: var(--surface-2);
}
.lph-step.is-soon {
  border-style: dashed;
  color: var(--ink-3);
}
.lph-step-soon {
  font-size: 0.8125rem;
  font-weight: 400;
  white-space: nowrap;
}
.lph-step[aria-pressed="true"] {
  position: relative;
  z-index: 1;
  border-style: solid;
  border-color: var(--brand);
  background: var(--brand);
  color: var(--on-brand);
}
.lph-step:focus-visible {
  position: relative;
  z-index: 2;
}
.lph-note {
  min-height: 1.4em;
  max-width: 46ch;
  margin: var(--s-2) 0 0;
}

/* ── Continue and the four skills ────────────────────────────────────────── */
.lph-student {
  display: grid;
  gap: var(--s-4);
}
.lph-continue {
  padding: clamp(1rem, 2.4vw, 1.6rem);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--bg);
}
.lph-continue h2 {
  margin: 0 0 var(--s-2);
  font: 600 clamp(1.35rem, 1.1rem + 0.9vw, 1.75rem) / 1.15 var(--font-display);
}
.lph-why {
  margin: 0 0 var(--s-4);
  color: var(--ink-2);
}
.lph-go {
  width: 100%;
  justify-content: center;
}
.lph-time {
  margin: var(--s-2) 0 0;
}
.lph-primary-options {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-2);
  margin-top: var(--s-3);
}
.lph-primary-options a {
  display: inline-flex;
  align-items: center;
  min-height: 3rem;
  padding: 0.5rem 0.8rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--brand-ink);
  font-weight: 700;
  text-decoration: none;
}
.lph-primary-options a:hover {
  background: var(--brand-soft);
}
.lph-primary-options a:focus-visible,
.lph-dashboard > summary:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}
.lph-dashboard {
  margin-block: var(--s-5);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--surface);
  box-shadow: var(--shadow);
}
.lph-dashboard > summary {
  display: grid;
  gap: 0.2rem;
  min-height: 4.5rem;
  padding: 1rem 1.25rem;
  cursor: pointer;
}
.lph-dashboard > summary > span:first-child {
  color: var(--brand-ink);
  font-size: 0.875rem;
  font-weight: 700;
}
.lph-dashboard > summary strong {
  font: 600 1.25rem/1.25 var(--font-display);
}
.lph-dashboard[open] > summary {
  margin-bottom: var(--s-3);
  border-bottom: 1px solid var(--line);
}
.lph-dashboard-content {
  display: grid;
  gap: var(--s-5);
  padding: 0 var(--s-4) var(--s-5);
}
.lph-dashboard-content > section,
.lph-dashboard-content > aside {
  margin-block: 0;
}
.lph-recommended-next {
  margin-block: var(--s-4);
}
.lph-recommended-next .next-step {
  width: min(100%, 66rem);
  margin-inline: auto;
}
@media (max-width: 599px) {
  .lph-dashboard > summary {
    padding-inline: 0.9rem;
  }
  .lph-dashboard-content {
    padding-inline: 0.75rem;
  }
  .lph-primary-options a {
    flex: 1 1 9rem;
    justify-content: center;
  }
}
.lph-skills {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--s-2);
  margin: 0;
  padding: 0;
  list-style: none;
}
.lph-skill {
  display: flex;
  align-items: center;
  gap: var(--s-3);
  min-height: 3.75rem;
  padding: 0.6rem 1rem;
  border-radius: var(--radius);
  background: var(--room);
  color: #fff;
  font-size: 1.125rem;
  font-weight: 700;
  text-decoration: none;
}
.lph-skill:hover {
  color: #fff;
  filter: brightness(1.12);
}
.lph-skill .ico {
  flex: none;
  width: 1.5rem;
  height: 1.5rem;
}
.lph-skill:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

/* ── teacher and family doors ────────────────────────────────────────────── */
.lph-doors {
  display: grid;
  gap: var(--s-3);
  padding-top: var(--s-4);
  border-top: 1px solid var(--line);
}
.lph-door {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: var(--s-3);
  align-items: center;
}
.lph-door h2 {
  margin: 0;
  font: 700 1.125rem/1.2 var(--font);
}
.lph-door .fine {
  margin: 0.15rem 0 0;
}
.lph-door-ic {
  display: grid;
  place-items: center;
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  background: var(--brand-soft);
  color: var(--brand-ink);
}
.lph-door.is-family .lph-door-ic {
  background: var(--writing-soft);
  color: var(--writing-ink);
}

/* ── explore: featured cards, then the rest behind one disclosure ───────── */
.lph-more {
  margin-top: var(--s-3);
}
.lph-more > summary {
  display: inline-flex;
  align-items: center;
  min-height: 3rem;
  font-weight: 700;
  cursor: pointer;
}
.lph-more[open] > summary {
  margin-bottom: var(--s-3);
}
.lph-explore > p:last-child {
  margin-top: var(--s-4);
}

@media (max-width: 899px) {
  .lph {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas:
      "intro"
      "student"
      "lang"
      "doors";
    grid-template-rows: none;
  }
}
@media (max-width: 599px) {
  /* Narrow screens: every grade group keeps a 48px target, so the segments stop being to scale; drop the scale. */
  .lph-ruler {
    padding-top: 0;
  }
  .lph-ruler::before {
    display: none;
  }
  .lph-step {
    flex-basis: 3rem;
    min-width: 3rem;
    font-size: 1rem;
  }
  .lph-step-soon {
    font-size: 0.75rem;
  }
}
@media (max-width: 479px) {
  .lph-door {
    grid-template-columns: auto minmax(0, 1fr);
  }
  .lph-door > .btn {
    grid-column: 1 / -1;
    justify-content: center;
  }
  .lph-skill {
    padding-inline: 0.75rem;
    font-size: 1rem;
  }
}