/*
 * SUDOKU — foglio di stile
 * Palette a token, tema chiaro e scuro, layout responsivo senza dipendenze.
 */

/* ------------------------------------------------------------------ */
/* Token — tema chiaro (predefinito)                                   */
/* ------------------------------------------------------------------ */
:root {
  color-scheme: light;

  --bg: #f4f6f9;
  --surface: #ffffff;
  --surface-2: #eef1f6;
  --text: #12151a;
  --muted: #59616e;
  --border: #d7dce4;

  --line: #c2c9d4;
  --line-strong: #303844;

  --cell-bg: #ffffff;
  --cell-given: #12151a;
  --cell-user: #14509b;
  --cell-hint: #0a6b45;
  --cell-note: #6b7482;

  --sel-bg: #cfe0fb;
  --peer-bg: #e9eff8;
  --same-bg: #b9d3f8;

  --error-bg: #fbdcdc;
  --error-fg: #a71d22;

  --accent: #14509b;
  --accent-contrast: #ffffff;
  --accent-soft: #dfe9fa;

  --focus: #14509b;
  --shadow: 0 1px 2px rgba(16, 24, 40, .06), 0 8px 24px rgba(16, 24, 40, .06);

  --radius: 14px;
  --radius-sm: 10px;
  --gap: clamp(10px, 2.2vw, 18px);

  /* Larghezza del pannello comandi nei layout a due colonne */
  --panel-w: clamp(190px, 24vw, 300px);

  /* Lato della griglia: dipende sempre da larghezza E altezza disponibili.
     Modalità predefinita (colonna singola, telefoni). */
  --board-size: max(220px, min(calc(100vw - var(--gap) * 2), calc(100svh - 430px), 560px));
}

/* Tema scuro automatico (solo se l'utente non ha forzato il chiaro) */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;

    --bg: #0b0d10;
    --surface: #14181e;
    --surface-2: #1b2028;
    --text: #f2f5f9;
    --muted: #a3acba;
    --border: #2b323c;

    --line: #333b47;
    --line-strong: #7c8798;

    --cell-bg: #14181e;
    --cell-given: #ffffff;
    --cell-user: #7db3ff;
    --cell-hint: #56d6a0;
    --cell-note: #a6b0be;

    --sel-bg: #23375c;
    --peer-bg: #212832;
    --same-bg: #2e4a7d;

    --error-bg: #4a1c20;
    --error-fg: #ffa8a2;

    --accent: #7db3ff;
    --accent-contrast: #0b0d10;
    --accent-soft: #1f2b3d;

    --focus: #7db3ff;
    --shadow: 0 1px 2px rgba(0, 0, 0, .5), 0 10px 28px rgba(0, 0, 0, .45);
  }
}

/* Tema scuro forzato dall'utente */
:root[data-theme="dark"] {
  color-scheme: dark;

  --bg: #0b0d10;
  --surface: #14181e;
  --surface-2: #1b2028;
  --text: #f2f5f9;
  --muted: #a3acba;
  --border: #2b323c;

  --line: #333b47;
  --line-strong: #7c8798;

  --cell-bg: #14181e;
  --cell-given: #ffffff;
  --cell-user: #7db3ff;
  --cell-hint: #56d6a0;
  --cell-note: #a6b0be;

  --sel-bg: #23375c;
  --peer-bg: #212832;
  --same-bg: #2e4a7d;

  --error-bg: #4a1c20;
  --error-fg: #ffa8a2;

  --accent: #7db3ff;
  --accent-contrast: #0b0d10;
  --accent-soft: #1f2b3d;

  --focus: #7db3ff;
  --shadow: 0 1px 2px rgba(0, 0, 0, .5), 0 10px 28px rgba(0, 0, 0, .45);
}

/* ------------------------------------------------------------------ */
/* Base                                                                */
/* ------------------------------------------------------------------ */
*,
*::before,
*::after { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.45;
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
  overflow-x: hidden;
}

button, select, input { font: inherit; color: inherit; }

:where(button, select, a, [tabindex]):focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

h1, h2, h3, p, dl, dd, menu, ul { margin: 0; }
menu, ul { padding: 0; list-style: none; }

/* ------------------------------------------------------------------ */
/* Struttura                                                           */
/* ------------------------------------------------------------------ */
.app {
  min-height: 100svh;
  max-width: 980px;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  gap: var(--gap);
  padding:
    calc(var(--gap) + env(safe-area-inset-top))
    calc(var(--gap) + env(safe-area-inset-right))
    calc(var(--gap) + env(safe-area-inset-bottom))
    calc(var(--gap) + env(safe-area-inset-left));
}

.topbar {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.brand__title {
  font-size: clamp(1.35rem, 5vw, 1.9rem);
  font-weight: 700;
  letter-spacing: .22em;
  line-height: 1.1;
}

.brand__tagline {
  margin-top: 2px;
  font-size: .82rem;
  color: var(--muted);
  letter-spacing: .02em;
}

.topbar__actions { display: flex; gap: 8px; flex: none; }

.icon-btn {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.05rem;
  line-height: 1;
  transition: background .15s ease, border-color .15s ease;
}
.icon-btn:hover { background: var(--surface-2); }
.icon-btn:focus-visible { border-radius: 50%; }

.layout {
  flex: 1;
  display: grid;
  gap: var(--gap);
  align-content: start;
  justify-items: center;
  min-width: 0;
}

.board-area {
  width: min(100%, var(--board-size));
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: var(--gap);
}

/* I comandi usano tutta la larghezza utile: sui telefoni bassi la griglia
   si riduce ma tastierino e pulsanti restano comodi. */
.panel {
  width: 100%;
  max-width: 560px;
  min-width: 0;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  gap: var(--gap);
}

/* ------------------------------------------------------------------ */
/* Barra di stato                                                      */
/* ------------------------------------------------------------------ */
.status {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 8px 6px;
  box-shadow: var(--shadow);
}

.status__cell {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1px;
  min-width: 0;
}

.status__label {
  font-size: .68rem;
  text-transform: uppercase;
  letter-spacing: .09em;
  color: var(--muted);
}

.status__value {
  font-size: clamp(.9rem, 3.4vw, 1.05rem);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.status__value--alert { color: var(--error-fg); }

/* ------------------------------------------------------------------ */
/* Griglia                                                             */
/* ------------------------------------------------------------------ */
.board-wrap {
  position: relative;
  display: flex;
  justify-content: center;
  min-width: 0;
}

.board {
  position: relative;
  width: min(100%, var(--board-size));
  aspect-ratio: 1 / 1;
  display: grid;
  grid-template-columns: repeat(9, 1fr);
  grid-template-rows: repeat(9, 1fr);
  gap: 1px;
  padding: 2px;
  background: var(--line);
  border: 2px solid var(--line-strong);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  touch-action: manipulation;
  container-type: inline-size;
}

/* Linee spesse dei blocchi 3×3, disegnate sopra la griglia */
.board::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(var(--line-strong), var(--line-strong)) 33.333% 0 / 2px 100% no-repeat,
    linear-gradient(var(--line-strong), var(--line-strong)) 66.666% 0 / 2px 100% no-repeat,
    linear-gradient(var(--line-strong), var(--line-strong)) 0 33.333% / 100% 2px no-repeat,
    linear-gradient(var(--line-strong), var(--line-strong)) 0 66.666% / 100% 2px no-repeat;
}

.board__row { display: contents; }

.cell {
  position: relative;
  margin: 0;
  padding: 0;
  border: 0;
  background: var(--cell-bg);
  color: var(--cell-user);
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  font-size: clamp(1rem, 6vw, 2rem);
  font-size: 5.4cqw;
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: background-color .12s ease;
  min-width: 0;
  -webkit-user-select: none;
  user-select: none;
}

.cell.is-peer { background: var(--peer-bg); }
.cell.is-same { background: var(--same-bg); }
.cell.is-selected { background: var(--sel-bg); }

.cell.is-given { color: var(--cell-given); font-weight: 700; }
.cell.is-hint { color: var(--cell-hint); font-weight: 700; }

.cell.is-error { background: var(--error-bg); color: var(--error-fg); font-weight: 700; }
.cell.is-error.is-selected { background: var(--error-bg); box-shadow: inset 0 0 0 2px var(--error-fg); }

.cell:focus-visible {
  outline: none;
  box-shadow: inset 0 0 0 3px var(--focus);
  border-radius: 0;
  z-index: 2;
}

.cell__value { pointer-events: none; }

.cell__notes {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(3, 1fr);
  width: 100%;
  height: 100%;
  padding: 4%;
  color: var(--cell-note);
  font-weight: 500;
  font-size: clamp(.42rem, 2.3vw, .72rem);
  font-size: 2.4cqw;
  line-height: 1;
  pointer-events: none;
}

.cell__notes[hidden] { display: none; }

.cell__note { display: grid; place-items: center; }
.cell__note:empty::after { content: "\00a0"; }

/* Overlay di generazione */
.busy {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  justify-items: center;
  gap: 10px;
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  border-radius: var(--radius);
  color: var(--muted);
  font-size: .9rem;
  z-index: 3;
}
.busy[hidden] { display: none; }

.busy__spinner {
  width: 26px;
  height: 26px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin .8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* Messaggi temporanei: sovrapposti alla griglia, non occupano spazio nel flusso */
.live {
  position: absolute;
  left: 50%;
  bottom: -14px;
  transform: translateX(-50%);
  max-width: 96%;
  margin: 0;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  color: var(--text);
  font-size: .8rem;
  line-height: 1.3;
  text-align: center;
  text-wrap: balance;
  pointer-events: none;
  opacity: 0;
  transition: opacity .18s ease;
  z-index: 4;
}
.live:not(:empty) { opacity: .97; }

/* ------------------------------------------------------------------ */
/* Pannello comandi                                                    */
/* ------------------------------------------------------------------ */
.row {
  display: flex;
  gap: 10px;
  align-items: flex-end;
  flex-wrap: wrap;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1 1 12rem;
  min-width: 10.5rem;
}

.field__label {
  font-size: .68rem;
  text-transform: uppercase;
  letter-spacing: .09em;
  color: var(--muted);
}

.select {
  width: 100%;
  min-width: 9.5rem;
  padding: 11px 34px 11px 12px;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  appearance: none;
  background-image:
    linear-gradient(45deg, transparent 50%, currentColor 50%),
    linear-gradient(135deg, currentColor 50%, transparent 50%);
  background-position:
    calc(100% - 18px) calc(50% + 2px),
    calc(100% - 12px) calc(50% + 2px);
  background-size: 6px 6px, 6px 6px;
  background-repeat: no-repeat;
  text-overflow: ellipsis;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 44px;
  padding: 10px 16px;
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-weight: 600;
  white-space: nowrap;
  transition: background .15s ease, border-color .15s ease, opacity .15s ease;
}
.btn:hover { background: var(--surface-2); }
.btn:disabled {
  opacity: .42;
  cursor: not-allowed;
  background: var(--surface-2);
  border-style: dashed;
}
.btn:disabled:hover { background: var(--surface-2); }

.btn--primary {
  background: var(--accent);
  color: var(--accent-contrast);
  border-color: var(--accent);
  flex: 0 0 auto;
}
.btn--primary:hover { background: var(--accent); opacity: .9; }

.btn--ghost { background: transparent; }

.tools {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 8px;
}

.tool {
  flex-direction: column;
  gap: 2px;
  padding: 8px 4px;
  min-height: 58px;
}

.tool__icon { font-size: 1.05rem; line-height: 1; }
.tool__text { font-size: .72rem; font-weight: 600; letter-spacing: .01em; }

.tool[aria-pressed="true"] {
  background: var(--accent);
  color: var(--accent-contrast);
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-soft);
}
.tool[aria-pressed="true"] .tool__text { font-weight: 700; }

.pad {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 8px;
}

.key {
  position: relative;
  min-height: 54px;
  padding: 6px 2px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: clamp(1.15rem, 5vw, 1.5rem);
  font-weight: 600;
  color: var(--cell-user);
  display: grid;
  place-items: center;
  transition: background .15s ease, opacity .15s ease;
}
.key:hover { background: var(--surface-2); }

/* Cifra già presente nove volte: resta selezionabile ma passa in secondo piano */
.key.is-done {
  opacity: .4;
  font-weight: 500;
}

.footer {
  text-align: center;
  color: var(--muted);
  font-size: .78rem;
  padding-top: 4px;
}
.footer__line { line-height: 1.6; }
.footer__line--muted { opacity: .9; }

.linkish {
  background: none;
  border: 0;
  padding: 0;
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 2px;
  cursor: pointer;
  font-size: inherit;
}

/* ------------------------------------------------------------------ */
/* Finestre di dialogo                                                 */
/* ------------------------------------------------------------------ */
.dialog {
  width: min(560px, calc(100vw - 32px));
  max-height: min(86svh, 760px);
  padding: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  box-shadow: var(--shadow);
  overflow: auto;
  overscroll-behavior: contain;
}
.dialog::backdrop { background: rgba(0, 0, 0, .55); }
.dialog--compact { width: min(400px, calc(100vw - 32px)); }

.dialog__inner {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(18px, 4vw, 26px);
}
.dialog__inner--center { align-items: center; text-align: center; }

.dialog__title { font-size: 1.25rem; font-weight: 700; }
.dialog__title:focus { outline: none; }
.dialog__title:focus-visible { outline: 3px solid var(--focus); outline-offset: 4px; }
.dialog__subtitle {
  margin-top: 8px;
  font-size: .74rem;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--muted);
}
.dialog p { font-size: .92rem; }
.dialog__list { display: flex; flex-direction: column; gap: 6px; font-size: .9rem; }
.dialog__list li { padding-left: 14px; position: relative; }
.dialog__list li::before { content: "·"; position: absolute; left: 4px; }
.dialog__meta { color: var(--muted); font-size: .84rem !important; }

.dialog__actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  flex-wrap: wrap;
  margin-top: 14px;
}
.dialog__actions--center { justify-content: center; }

.win__mark {
  width: 56px;
  height: 56px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 1.6rem;
  font-weight: 700;
}
.win__lead { color: var(--muted); }

.win__stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
  width: 100%;
  margin-top: 6px;
}
.win__stats > div {
  background: var(--surface-2);
  border-radius: var(--radius-sm);
  padding: 8px 4px;
}
.win__stats dt {
  font-size: .64rem;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--muted);
}
.win__stats dd {
  font-size: .95rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

/* ------------------------------------------------------------------ */
/* Adattamenti responsivi                                              */
/*                                                                     */
/* Il layout è scelto in base allo spazio realmente disponibile —       */
/* larghezza, altezza e proporzioni — mai in base allo user agent.      */
/*                                                                     */
/*   C  colonna singola      telefoni e finestre strette                */
/*   A  due colonne          pieghevoli aperti, tablet, desktop:        */
/*                           griglia a sinistra, comandi in verticale   */
/*   B  due colonne compatte  poca altezza (telefoni in orizzontale)    */
/* ------------------------------------------------------------------ */

/* --- C: schermi molto stretti (pieghevoli chiusi, telefoni compatti) - */
@media (max-width: 359px) {
  :root { --gap: 8px; }
  .brand__title { letter-spacing: .16em; }
  .tools { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .key { min-height: 48px; }
}

/* --- C: tastierino su una sola riga quando la larghezza lo consente -- */
@media (min-width: 430px) {
  .pad { grid-template-columns: repeat(9, minmax(0, 1fr)); }
}

/* --- C: telefoni con poca altezza — comandi compatti, gioco tutto in vista */
@media (max-width: 599px) and (max-height: 800px) {
  :root {
    --board-size: max(190px, min(
      calc(100vw - var(--gap) * 2),
      calc(100svh - 396px),
      560px
    ));
  }
  .status { padding: 6px 4px; }
  .brand__tagline { font-size: .76rem; }
  .tools { grid-template-columns: repeat(5, minmax(0, 1fr)); }
  .tool { min-height: 48px; padding: 6px 1px; }
  .tool__text { font-size: clamp(.5rem, 2.3vw, .62rem); }
  /* Difficoltà e Nuova partita restano sulla stessa riga anche a 320px */
  .field { flex: 1 1 8rem; min-width: 8rem; }
  .field .select { min-width: 0; padding-right: 30px; }
  .row .btn--primary { padding: 10px 12px; }
}

/* ------------------------------------------------------------------ */
/* A — due colonne con pannello verticale                              */
/*                                                                     */
/* Attiva quando c'è larghezza sufficiente e altezza reale:            */
/*  - da 760px di larghezza (tablet, desktop);                          */
/*  - da 600px se la forma dello schermo è larga (pieghevoli aperti).   */
/* La griglia non cresce oltre lo spazio verticale disponibile, così    */
/* griglia, stato, tastierino e comandi restano visibili insieme.       */
/* ------------------------------------------------------------------ */
@media (min-height: 640px) and (min-width: 760px),
       (min-height: 640px) and (min-width: 600px) and (min-aspect-ratio: 3 / 4) {
  :root {
    --board-size: max(240px, min(
      calc(min(100vw, 1040px) - var(--panel-w) - var(--gap) * 3 - 8px),
      calc(100svh - var(--gap) * 5 - 128px),
      620px
    ));
  }

  .app { max-width: 1040px; }

  .brand__title { font-size: clamp(1.3rem, 2.4vw, 1.75rem); }

  .layout {
    grid-template-columns: minmax(0, var(--board-size)) var(--panel-w);
    justify-content: center;
    justify-items: stretch;
    align-items: start;
  }

  .board-area,
  .panel { width: auto; max-width: none; }

  .panel { position: sticky; top: var(--gap); }

  /* Il tastierino diventa 3×3: usa l'altezza della colonna, non la larghezza */
  .pad {
    order: 1;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
  }
  .key {
    min-height: clamp(42px, 7.2svh, 64px);
    font-size: clamp(1.15rem, 2.6svh, 1.6rem);
  }

  .tools {
    order: 2;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .tool { min-height: clamp(42px, 5.6svh, 56px); }
  /* L'ultimo comando occupa la riga intera: griglia sempre regolare */
  .tools .tool:last-child { grid-column: 1 / -1; }

  /* Nuova partita resta un'azione secondaria, in fondo al pannello */
  .panel .row {
    order: 3;
    margin-top: 2px;
    padding-top: var(--gap);
    border-top: 1px solid var(--border);
  }
  .panel .row .btn--primary { flex: 1 1 100%; }
}

/* ------------------------------------------------------------------ */
/* B — due colonne compatte quando l'altezza è poca                    */
/* (telefoni in orizzontale, finestre basse)                           */
/* ------------------------------------------------------------------ */
@media (max-height: 639px) and (min-width: 560px) {
  :root {
    --gap: 8px;
    --board-size: max(200px, min(calc(100svh - 116px), 460px));
  }
  .app { max-width: none; }
  .brand__tagline { display: none; }
  .brand__title { font-size: 1.1rem; }
  .icon-btn { width: 36px; height: 36px; }
  .layout {
    grid-template-columns: minmax(0, var(--board-size)) minmax(220px, 1fr);
    justify-content: center;
    justify-items: stretch;
    align-items: start;
  }
  .board-area { width: auto; max-width: none; }
  .panel { width: auto; max-width: none; margin-inline: 0; position: static; }
  .status { padding: 5px 4px; }

  /* Stesso ordine del layout a due colonne: prima il gioco, poi le opzioni */
  .pad { order: 1; }
  .tools { order: 2; }
  .panel .row {
    order: 3;
    padding-top: var(--gap);
    border-top: 1px solid var(--border);
  }
  .status__label { font-size: .6rem; }
  .tools { grid-template-columns: repeat(5, minmax(0, 1fr)); }
  .tools .tool:last-child { grid-column: auto; }
  .tool { min-height: 46px; }
  .tool__text { font-size: .64rem; }
  .pad { grid-template-columns: repeat(9, minmax(0, 1fr)); }
  .key { min-height: 44px; font-size: clamp(1.05rem, 4vh, 1.35rem); }
  .footer { display: none; }
}

/* Due colonne su schermi alti: il gioco resta otticamente centrato
   invece di lasciare tutto lo spazio libero in fondo. */
@media (min-height: 880px) and (min-width: 760px),
       (min-height: 880px) and (min-width: 600px) and (min-aspect-ratio: 3 / 4) {
  .layout { align-content: center; }
  .layout { align-content: safe center; }
}

/* Schermi molto alti: il contenuto resta otticamente centrato */
@media (min-height: 1200px) {
  .layout { align-content: center; }
  .layout { align-content: safe center; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}

@media (prefers-contrast: more) {
  :root { --border: var(--line-strong); }
}