@layer views {
  /* ── levels: the goal ring, the streak, the level bar, "+xp", celebrations, recaps ── */
  .goal-ring { position: relative; display: inline-grid; place-items: center; flex: none; }
  .goal-ring svg { display: block; rotate: -90deg; }
  .ring-track { fill: none; stroke: var(--line-2); stroke-width: 3.5; }
  .ring-arc { fill: none; stroke: var(--known); stroke-width: 3.5; stroke-linecap: round; transition: stroke-dashoffset 900ms var(--ease-liquid), stroke var(--t); }
  .goal-ring[data-done="true"] .ring-arc { stroke: var(--right); }
  .goal-ring b { position: absolute; font-size: 10.5px; font-weight: 800; color: var(--fg); font-variant-numeric: tabular-nums; }

  .streak { display: inline-flex; align-items: center; gap: 4px; color: var(--faint); font-size: 13px; }
  .streak svg { width: 17px; height: 17px; }
  .streak b { font-variant-numeric: tabular-nums; }
  .streak[data-on="true"] { color: var(--due); }
  .streak[data-on="true"] svg { fill: color-mix(in oklch, var(--due) 30%, transparent); }
  .streak[data-on="true"][data-today="false"] { opacity: .7; }

  .combo { display: inline-flex; align-items: center; gap: 3px; color: var(--muted); font-size: 12.5px; font-weight: 800; font-variant-numeric: tabular-nums; }
  .combo svg { width: 15px; height: 15px; }
  .combo.on { color: var(--learning); }
  .combo.on svg { fill: color-mix(in oklch, var(--learning) 35%, transparent); }
  .combo.bump { animation: combo-bump 420ms var(--ease-liquid); }
  @keyframes combo-bump { 40% { scale: 1.28; } }

  .lv { display: flex; align-items: center; gap: 14px; min-width: 0; }
  .lv-badge {
    display: grid; justify-items: center; flex: none; min-width: 58px; padding: 6px 10px 7px; border-radius: 14px;
    background: linear-gradient(var(--surface), var(--surface)) padding-box, var(--grad) border-box; border: 1.5px solid transparent;
  }
  .lv-badge span { font-family: var(--mono); font-size: 10.5px; color: var(--muted); }
  .lv-num { font-size: 24px; font-weight: 800; line-height: 1; letter-spacing: -0.04em; color: var(--fg); font-variant-numeric: tabular-nums; }
  .lv.lv-up .lv-badge { animation: lv-pop 700ms var(--ease-liquid); }
  @keyframes lv-pop { 30% { scale: 1.16; } }
  .lv-main { display: grid; gap: 6px; flex: 1; min-width: 0; }
  .lv-track { height: 10px; border-radius: 5px; background: var(--surface-2); overflow: hidden; }
  .lv-fill { display: block; height: 100%; border-radius: inherit; background: var(--grad); transition: width 750ms var(--ease-liquid); }
  .lv-count { font-family: var(--mono); font-size: 12px; color: var(--muted); }

  .xp-float {
    position: fixed; z-index: 60; pointer-events: none; translate: -50% 0;
    font-size: 14px; font-weight: 800; color: var(--right); letter-spacing: -0.01em;
    animation: xp-rise 1300ms var(--ease-liquid) forwards;
  }
  @keyframes xp-rise { 0% { opacity: 0; transform: translateY(6px) scale(.9); } 18% { opacity: 1; transform: translateY(-6px) scale(1.05); } 100% { opacity: 0; transform: translateY(-42px) scale(1); } }

  .celebrate { position: fixed; inset: 0 0 auto; z-index: 70; display: grid; justify-items: center; padding-top: calc(76px + env(safe-area-inset-top, 0px)); pointer-events: none; }
  .celebrate-card {
    position: relative; pointer-events: auto; cursor: pointer; display: grid; justify-items: center; gap: 2px; padding: 16px 30px 17px;
    border-radius: 20px; border: 1.5px solid transparent; box-shadow: var(--shadow-float);
    background: linear-gradient(var(--bg-raise), var(--bg-raise)) padding-box, var(--grad) border-box;
    animation: cele-in 520ms var(--ease-liquid);
  }
  .celebrate-card b { font-size: 26px; font-weight: 800; letter-spacing: -0.04em; color: var(--fg); }
  .celebrate-card > span:not(.burst) { font-size: 13.5px; color: var(--fg-2); }
  .celebrate[data-tone="goal"] .celebrate-card { background: linear-gradient(var(--bg-raise), var(--bg-raise)) padding-box, linear-gradient(90deg, var(--right), var(--known)) border-box; }
  .celebrate.out .celebrate-card { animation: cele-out 300ms ease-in forwards; }
  @keyframes cele-in { from { opacity: 0; translate: 0 -14px; scale: .94; } }
  @keyframes cele-out { to { opacity: 0; translate: 0 -10px; } }
  .burst { position: absolute; inset: 50% auto auto 50%; width: 0; height: 0; }
  .burst i {
    position: absolute; width: 6px; height: 6px; margin: -3px; border-radius: 2px; background: var(--grad-a, var(--learning));
    rotate: calc(var(--k) * 25.7deg); animation: burst 900ms var(--ease-liquid) forwards;
  }
  .burst i:nth-child(3n) { background: var(--due); } .burst i:nth-child(3n + 1) { background: var(--known); }
  @keyframes burst { 0% { transform: translateY(0) scale(1); opacity: 1; } 100% { transform: translateY(-86px) scale(.4); opacity: 0; } }

  .recap { display: grid; gap: 14px; padding: 18px 20px; border-radius: var(--r-card); border: 1px solid var(--line); background: var(--surface); }
  .recap-top { display: flex; align-items: baseline; gap: 12px; }
  .recap-xp { font-size: 15px; color: var(--muted); font-weight: 700; }
  .recap-xp b { font-size: 34px; font-weight: 800; letter-spacing: -0.05em; color: var(--fg); background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
  .recap-up { font-weight: 800; color: var(--learning); animation: cele-in 600ms var(--ease-liquid) 800ms both; }
  .recap-stats { display: flex; flex-wrap: wrap; gap: 10px 22px; }
  .recap-stat { display: inline-flex; align-items: center; gap: 8px; font-size: 13.5px; color: var(--fg-2); }

  .prog-card { display: flex; flex-wrap: wrap; align-items: center; gap: 16px 28px; padding: 18px 20px; border-radius: var(--r-card); border: 1px solid var(--line); background: var(--surface); }
  .prog-card > .lv { flex: 1 1 280px; }
  .prog-side { display: flex; flex-wrap: wrap; align-items: center; gap: 14px 24px; }
  .prog-stat { display: flex; align-items: center; gap: 10px; }
  .prog-stat > div { display: grid; line-height: 1.25; }
  .prog-stat b { font-size: 14px; color: var(--fg); font-variant-numeric: tabular-nums; }
  .prog-stat span { font-size: 12px; color: var(--muted); }
  .prog-stat .streak svg { width: 26px; height: 26px; }
  .prog-stat .streak b { display: none; }
  .prog-week { display: flex; align-items: flex-end; gap: 5px; height: 50px; }
  .prog-day { display: grid; justify-items: center; gap: 3px; font-family: var(--mono); font-size: 10px; color: var(--faint); }
  .prog-day i { display: block; width: 10px; border-radius: 3px; background: var(--line-2); }
  .prog-day[data-met="true"] i { background: var(--right); }

  /* The session's heads-up: the run of right answers, today's goal. */
  .ss-hud { display: flex; align-items: center; gap: 12px; }
  .ss-hud .combo:not(.on) { visibility: hidden; }
  .ss-icon { border: 0; background: none; color: var(--muted); display: inline-grid; place-items: center; width: 30px; height: 30px; border-radius: 50%; }
  .ss-icon:hover { color: var(--fg); background: var(--surface-2); }
  .ss-icon svg { width: 16px; height: 16px; }

  /* A skill moving up a tier. */
  .skill[data-up="true"] { border-color: transparent; background: linear-gradient(var(--bg-raise), var(--bg-raise)) padding-box, var(--grad) border-box; }
  .skill-tier { font-family: var(--mono); font-size: 11.5px; color: var(--learning); font-weight: 600; }
  .skill[data-up="true"] .skill-tier { animation: cele-in 520ms var(--ease-liquid) 650ms both; }

  @media (max-width: 640px) {
    .prog-week { display: none; }
  }
  @media (prefers-reduced-motion: reduce) {
    .combo.bump, .lv.lv-up .lv-badge, .celebrate-card, .celebrate.out .celebrate-card, .recap-up, .skill[data-up="true"] .skill-tier { animation: none; }
    .ring-arc, .lv-fill { transition: none; }
  }
}