/* Partner practice (round 10, lane 009): #/partner, the invite, the join page, a partnership and the shared session.
   Phone first (390 px); logical properties only; tokens from styles/tokens.css; no accent fills (today's square is an
   accent outline, a missed day is an empty square, never red). */

.partner { max-width: 760px; margin-inline: auto; }
.partner-note:empty { display: none; }
.partner-note { color: var(--ink-2); }
.partner-actions { display: flex; flex-wrap: wrap; gap: var(--s-2); margin-top: var(--s-3); }
.partner-actions-stack { flex-direction: column; align-items: stretch; }
.partner-actions-stack .btn { width: 100%; }

/* the hub */
.partner-list { --gap: var(--s-8); }
.partner-lang { padding-top: var(--s-5); border-top: 1px solid var(--hairline); }
.partner-lang > h2 { margin-bottom: var(--s-3); }
.partner-lang > * + * { margin-top: var(--s-2); }
.partner-name-link { color: var(--ink); text-decoration: none; display: inline-flex; align-items: center; min-height: var(--tap); }
.partner-name-link:hover { text-decoration: underline; }
.partner-figure-line { display: flex; align-items: baseline; gap: var(--s-2); }
.partner-days { font: 300 var(--fs-h2)/1.1 var(--font-display); }
.partner-started { font-weight: 500; }
.partner-join-row { display: flex; gap: var(--s-2); }
.partner-join-row .input { flex: 1; min-width: 0; }
.partner-code-input { text-transform: uppercase; letter-spacing: 0.12em; font-size: var(--fs-input); }

/* the code: large tabular type, two groups of three */
.partner-code { font: 400 clamp(44px, 14vw, 64px)/1.05 var(--font-display); letter-spacing: 0.06em; font-variant-numeric: tabular-nums lining-nums; margin-block: var(--s-4) var(--s-2); }
.partner-code-small { font-size: var(--fs-h1); }

/* a partnership */
.partner-head { align-items: center; }
.partner-head h1 { overflow-wrap: anywhere; }
.partner-lang-line { margin-top: calc(-1 * var(--s-3)); }
.partner-figure .figure { margin-top: var(--s-1); }
.partner-caption { color: var(--ink-2); font-size: var(--fs-label); }
.partner-sec { padding-top: var(--s-6); margin-top: var(--s-6); border-top: 1px solid var(--hairline); }
.partner-sec > h2 { font-size: var(--fs-title); font-family: var(--font-ui); font-weight: 600; margin-bottom: var(--s-3); }
.partner-sec > * + * { margin-top: var(--s-2); }
.partner-started-wrap:empty { display: none; }
.partner-started-wrap .partner-started { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: var(--s-3);
  padding: var(--s-3) var(--s-4); border: 1px solid var(--hairline-strong); border-radius: var(--r-ctl); background: var(--surface); }
.partner-leave { margin-top: var(--s-8); padding-top: var(--s-4); border-top: 1px solid var(--hairline); }

/* this week: seven squares, Monday first. Filled ink: both spoke; outlined: one of you; empty: neither; today: an
   accent outline around whichever state it is */
.partner-week { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: var(--s-2); list-style: none; margin: 0; padding: 0; max-width: 360px; }
.partner-sq { display: grid; justify-items: center; gap: var(--s-1); }
.partner-sq-box { width: 100%; max-width: 36px; aspect-ratio: 1; border-radius: var(--r-tile); background: var(--cell-empty); box-sizing: border-box; }
.partner-sq.is-both .partner-sq-box { background: var(--cell-known); }
.partner-sq.is-one .partner-sq-box { background: transparent; border: 2px solid var(--cell-known); }
.partner-sq.is-future .partner-sq-box { background: transparent; border: 1px dashed var(--hairline-strong); }
.partner-sq.is-today .partner-sq-box { outline: 2px solid var(--accent); outline-offset: 2px; }
.partner-sq.is-today .partner-sq-day { color: var(--accent-ink, var(--accent)); }
@media (forced-colors: active) {
  .partner-sq.is-both .partner-sq-box { background: CanvasText; }
  .partner-sq.is-one .partner-sq-box, .partner-sq-box { border: 2px solid CanvasText; }
}

/* the shared session (full screen) */
.partner-session { padding: max(var(--s-3), env(safe-area-inset-top)) max(var(--gutter), env(safe-area-inset-left)) calc(var(--s-8) + env(safe-area-inset-bottom)); max-width: 760px; margin-inline: auto; }
.partner-session-head { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: var(--s-2); }
.partner-session-head h1 { font-size: var(--fs-title); font-family: var(--font-ui); font-weight: 600; text-align: center; }
.partner-session-main { margin-top: var(--s-5); }
.partner-timer { font: 300 var(--fs-figure)/1 var(--font-display); font-variant-numeric: tabular-nums lining-nums; text-align: center; }
.partner-waiting:empty { display: none; }
.partner-waiting { text-align: center; }
.partner-prompt { padding: var(--s-4); border-radius: var(--r-ctl); background: var(--surface); border: 1px solid var(--hairline); }
.partner-prompt-text { font: 400 var(--fs-h2)/1.3 var(--font-display); margin-top: var(--s-1); }
.partner-prompt-row { display: flex; align-items: center; justify-content: space-between; gap: var(--s-2); margin-top: var(--s-2); }
.partner-tiles { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--s-2); }
.partner-tile { display: grid; align-content: center; gap: var(--s-1); min-height: 64px; padding: var(--s-2) var(--s-3); text-align: start;
  border-radius: var(--r-ctl); border: 1px solid var(--hairline-strong); background: var(--surface); color: var(--ink); font: 500 var(--fs-body)/1.3 var(--font-ui); cursor: pointer; }
.partner-tile-text { overflow-wrap: anywhere; }
.partner-tile-by:empty { display: none; }
.partner-tile[aria-pressed="true"] { border: 2px solid var(--ink); background: var(--surface-2); }
.partner-tile:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.partner-done-figure { text-align: start; }
.partner-done-figure + .caption { margin-top: var(--s-1); }
.partner-result:empty, .partner-ended-by:empty { display: none; }
.partner-result { color: var(--ink-2); }
.partner-end-low { margin-top: var(--s-5); }
.partner-blocked .partner-actions { margin-top: var(--s-4); }
.partner-used { padding-inline-start: var(--s-5); }
.partner-used li + li { margin-top: var(--s-1); }

@media (min-width: 720px) {
  .partner-tiles { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .partner-actions-stack { flex-direction: row; }
  .partner-actions-stack .btn { width: auto; }
}