.skip-link { position: fixed; left: 16px; top: -80px; z-index: 100; padding: 12px 18px; background: var(--ink); color: white; border-radius: 8px; }
.skip-link:focus { top: 16px; }

.picker-page { min-height: 100vh; display: grid; grid-template-columns: minmax(320px, .86fr) minmax(500px, 1.14fr); background: var(--paper); }
.picker-intro { position: relative; overflow: hidden; padding: clamp(36px, 5vw, 72px); color: white; background: var(--ink); display: flex; flex-direction: column; justify-content: space-between; }
.picker-intro::after { content: ""; position: absolute; inset: auto -120px -160px auto; width: 360px; height: 360px; border: 54px solid rgba(255,255,255,.055); border-radius: 50%; }
.brand-lockup { display: flex; gap: 14px; align-items: center; position: relative; z-index: 1; }
.brand-lockup img { width: 54px; height: 54px; }
.brand-lockup strong { display: block; font-size: 1.15rem; letter-spacing: -.03em; }
.brand-lockup span { display: block; color: #b9c8dc; margin-top: 2px; font-size: .84rem; }
.picker-copy { position: relative; z-index: 1; max-width: 620px; padding-block: 38px; }
.eyebrow { margin: 0 0 18px; color: #9fc7bd; font-family: var(--font-data); font-size: .78rem; letter-spacing: .11em; text-transform: uppercase; }
.picker-copy h1 { margin: 0; font: 400 clamp(2.35rem, 4.2vw, 3.75rem)/1.06 var(--font-display); letter-spacing: 0; }
.picker-copy h1 span { display: block; color: #a9c5f6; }
.picker-copy > p:not(.eyebrow) { margin: 26px 0 0; max-width: 31em; color: #d7e0eb; font-size: clamp(1rem, 1.5vw, 1.18rem); line-height: 1.72; }
.semester-rail { position: relative; z-index: 1; display: grid; grid-template-columns: repeat(6, 1fr); gap: 6px; }
.semester-rail span { border-top: 4px solid var(--semester-color, #fff); padding-top: 9px; color: #c9d3e0; font: 700 .76rem var(--font-data); }
.semester-rail span:nth-child(2), .semester-rail span:nth-child(5) { --semester-color: var(--mint); }
.semester-rail span:nth-child(3), .semester-rail span:nth-child(6) { --semester-color: var(--coral); }
.semester-rail span:nth-child(4) { --semester-color: var(--amber); }

.picker-panel { padding: clamp(30px, 6vw, 80px); display: flex; align-items: center; }
.picker-card { width: min(720px, 100%); margin-inline: auto; }
.picker-card header { display: flex; justify-content: space-between; gap: 24px; align-items: end; padding-bottom: 22px; border-bottom: 1px solid var(--line); }
.picker-card h2 { margin: 0; font: 400 clamp(1.75rem, 2.5vw, 2.2rem)/1.12 var(--font-display); letter-spacing: 0; }
.picker-card header p { margin: 8px 0 0; color: var(--ink-soft); line-height: 1.6; }
.data-stamp { flex: none; color: var(--blue); font: 700 .78rem var(--font-data); }
.picker-controls { display: grid; grid-template-columns: 180px 1fr; gap: 14px; margin-top: 24px; }
.field { display: grid; gap: 7px; color: var(--ink-soft); font-size: .85rem; font-weight: 700; }
.field select, .field input { width: 100%; border: 1px solid var(--line-strong); border-radius: var(--radius-sm); background: var(--surface); color: var(--ink); padding: 0 13px; }
.school-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; max-height: 320px; overflow: auto; padding: 6px 5px 6px 0; margin-top: 18px; }
.school-choice { min-height: 60px; border: 1px solid var(--line); border-radius: 13px; padding: 12px 14px; background: var(--surface); color: var(--ink); text-align: left; cursor: pointer; transition: border-color .16s ease, transform .16s ease, box-shadow .16s ease; }
.school-choice:hover { transform: translateY(-1px); border-color: var(--blue); }
.school-choice[aria-pressed="true"] { border-color: var(--blue); box-shadow: 0 0 0 2px #dbe7fb; background: #f7faff; }
.school-choice small { display: block; color: var(--ink-soft); margin-top: 4px; }
.empty-list { grid-column: 1 / -1; padding: 26px; border: 1px dashed var(--line-strong); border-radius: 12px; color: var(--ink-soft); text-align: center; }
.picker-selection { margin-top: 18px; min-height: 108px; padding: 18px; border-radius: var(--radius-md); background: #eaf0fa; display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 18px; }
.picker-selection strong { display: block; font-size: 1.15rem; }
.picker-selection p { margin: 5px 0 0; color: var(--ink-soft); }
.track-field { margin-top: 12px; max-width: 260px; }
.primary-button, .secondary-button, .header-button, .nav-button { border: 0; border-radius: 11px; padding: 0 17px; cursor: pointer; font-weight: 750; }
.primary-button { background: var(--blue); color: white; min-width: 126px; }
.primary-button:hover { background: var(--blue-dark); }
.primary-button:disabled { background: #aab6c7; cursor: not-allowed; }
.secondary-button, .header-button { border: 1px solid var(--line); background: white; color: var(--ink); }

.app-shell { min-height: 100vh; display: flex; flex-direction: column; }
.app-header { position: sticky; top: 0; z-index: 30; background: rgba(255,255,255,.96); border-bottom: 1px solid var(--line); backdrop-filter: blur(12px); }
.header-inner { width: var(--page); margin: auto; min-height: 70px; display: grid; grid-template-columns: auto 1fr auto; gap: 20px; align-items: center; }
.app-brand { display: flex; gap: 10px; align-items: center; text-decoration: none; }
.app-brand img { width: 38px; height: 38px; }
.app-brand strong { display: block; letter-spacing: -.035em; }
.app-brand small { display: block; color: var(--ink-soft); margin-top: 1px; }
.main-nav { display: flex; justify-content: center; gap: 4px; }
.nav-button { background: transparent; color: var(--ink-soft); white-space: nowrap; }
.nav-button[aria-current="page"] { color: var(--blue-dark); background: #eaf0fa; }
.school-context { display: flex; align-items: center; gap: 10px; }
.school-context-text { min-width: 0; text-align: right; }
.school-context-text strong { display: block; max-width: 220px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.school-context-text small { color: var(--ink-soft); }
.app-main { width: var(--page); margin: 0 auto; flex: 1; padding-block: clamp(20px, 2.2vw, 32px); }
.app-footer { border-top: 1px solid var(--line); color: var(--ink-soft); }
.footer-inner { width: var(--page); margin: auto; min-height: 56px; display: flex; gap: 20px; justify-content: space-between; align-items: center; font-size: .82rem; }
.footer-credit { text-align: right; }

.school-hero { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(320px, .8fr); gap: clamp(26px, 4vw, 56px); align-items: end; padding: clamp(26px, 3.5vw, 48px); border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--surface); box-shadow: var(--shadow); }
.school-hero h1 { margin: 0; max-width: 12em; font: 400 clamp(2.3rem, 4vw, 3.6rem)/1.08 var(--font-display); letter-spacing: 0; }
.school-hero .subline { margin: 14px 0 0; color: var(--ink-soft); font-size: 1.04rem; }
.badge { display: inline-flex; align-items: center; min-height: 30px; padding: 4px 10px; border-radius: 999px; background: #e7f3ef; color: #236d61; font-weight: 800; font-size: .75rem; }
.badge.extended { background: #fff0e8; color: #95513a; }
.credit-board { border-left: 1px solid var(--line); padding-left: clamp(24px, 4vw, 48px); }
.credit-total { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; padding-bottom: 18px; }
.credit-total span { color: var(--ink-soft); }
.credit-total strong { font: 800 clamp(2.1rem, 4vw, 3.4rem) var(--font-data); color: var(--blue-dark); }
.credit-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 6px; }
.credit-grid div { min-width: 0; padding-top: 10px; border-top: 5px solid var(--blue); }
.credit-grid div:nth-child(2), .credit-grid div:nth-child(5) { border-color: var(--mint); }
.credit-grid div:nth-child(3), .credit-grid div:nth-child(6) { border-color: var(--coral); }
.credit-grid div:nth-child(4) { border-color: var(--amber); }
.credit-grid small { display: block; color: var(--ink-soft); font: 700 .68rem var(--font-data); }
.credit-grid b { display: block; margin-top: 5px; font: 800 1rem var(--font-data); }
.home-actions { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 24px; }
.home-action { padding: 24px; border: 1px solid var(--line); border-radius: var(--radius-md); background: var(--surface); text-decoration: none; }
.home-action small { color: var(--blue); font: 700 .72rem var(--font-data); }
.home-action strong { display: block; margin-top: 10px; font-size: 1.1rem; }
.home-action p { margin: 8px 0 0; color: var(--ink-soft); line-height: 1.55; }
.scope-panel { margin-top: 24px; padding: 24px; border-radius: var(--radius-md); background: #eef3f8; }
.scope-panel h2 { margin: 0; font-size: 1.1rem; }
.scope-panel p { margin: 9px 0 0; color: var(--ink-soft); line-height: 1.7; }
.route-empty, .load-error { max-width: 720px; margin: 8vh auto; padding: 32px; border: 1px solid var(--line); border-radius: var(--radius-md); background: white; box-shadow: var(--shadow); }
.load-error h1, .route-empty h1 { margin-top: 0; }
.load-error p, .route-empty p { color: var(--ink-soft); line-height: 1.7; }
.button-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }

@media (max-width: 1040px) {
  .header-inner { grid-template-columns: auto auto; padding-block: 12px; }
  .main-nav { grid-column: 1 / -1; grid-row: 2; justify-content: flex-start; overflow-x: auto; }
  .school-context { justify-self: end; }
  .school-hero { grid-template-columns: 1fr; }
  .credit-board { border-left: 0; border-top: 1px solid var(--line); padding: 26px 0 0; }
}

@media (max-width: 720px) {
  :root { --page: calc(100vw - 28px); }
  .picker-page { grid-template-columns: 1fr; }
  .picker-intro { min-height: 380px; padding: 26px 24px; }
  .picker-copy { padding-block: 32px; }
  .picker-copy h1 { font-size: clamp(2.2rem, 11.5vw, 3rem); }
  .picker-panel { padding: 34px 18px; align-items: start; }
  .picker-card header { display: block; }
  .data-stamp { display: block; margin-top: 12px; }
  .picker-controls, .school-list, .home-actions { grid-template-columns: 1fr; }
  .school-list { max-height: 360px; }
  .picker-selection { grid-template-columns: 1fr; }
  .picker-selection .primary-button { width: 100%; }
  .header-inner { width: calc(100vw - 24px); gap: 10px; }
  .app-brand small, .school-context-text small { display: none; }
  .app-brand { gap: 7px; }
  .app-brand img { width: 36px; height: 36px; }
  .app-brand strong { white-space: nowrap; font-size: .78rem; letter-spacing: -.045em; }
  .school-context-text { display: none; }
  .header-button { padding-inline: 10px; font-size: .76rem; white-space: nowrap; }
  .nav-button { padding-inline: 13px; }
  .school-hero { padding: 22px 20px; }
  .school-hero h1 { font-size: clamp(2rem, 9vw, 2.5rem); }
  .credit-grid { gap: 3px; }
  .credit-grid b { font-size: .84rem; }
  .footer-inner { display: block; padding-block: 20px; }
  .footer-credit { display: block; margin-top: 8px; text-align: left; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
}