/* Mehonat Khativa — mobile-first, no external assets.
   Colors/fonts matched to wiseberg.net for a consistent look. */

:root {
  --bg: #1a1f2e;
  --fg: #e0e0e0;
  --muted: #9e9e9e;
  --card: #1b2233;
  --border: #2d3548;
  --accent: #64b5f6;
  --accent-fg: #0d1022;
  --ok: #4fd27a;
  --ok-bg: #173622;
  --bad: #ff6b74;
  --bad-bg: #3d1a1e;
  --hint: #d9b21f;
  --hint-fg: #16171a;
  --key: #23293b;
  --key-fg: #e0e0e0;
  --key-mod: #2d3548;
  --key-shadow: 0 1px 0 rgba(0, 0, 0, 0.6);
  --kb-bg: #141822;

  --font-ui: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-he: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

  --gap: 5px;
}

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

html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }

html, body { margin: 0; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-ui);
  font-size: 16px;
  line-height: 1.4;
  overflow-x: hidden;
}

[hidden] { display: none !important; }

[lang="he"] { font-family: var(--font-he); }

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  overflow: hidden; clip: rect(0 0 0 0);
  white-space: nowrap;
}

.app {
  max-width: 760px;
  margin: 0 auto;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  padding-left: env(safe-area-inset-left);
  padding-right: env(safe-area-inset-right);
}

/* ---------- Top bar & settings ---------- */

.topbar {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 4px 8px;
  padding: calc(10px + env(safe-area-inset-top)) 14px 6px;
}

.back-link {
  order: -1;
  flex: 0 0 auto;
  color: var(--muted);
  font-size: 0.8rem;
  text-decoration: none;
  white-space: nowrap;
}
.back-link:hover { color: var(--accent); text-decoration: underline; }

.brand { font-size: 1.1rem; margin: 0; font-weight: 700; letter-spacing: 0.01em; flex: 1 1 auto; min-width: 0; }
.brand-he { color: var(--accent); margin-inline-start: 4px; }

.settings > summary {
  list-style: none;
  cursor: pointer;
  user-select: none;
  padding: 8px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--card);
  font-size: 0.95rem;
  min-height: 40px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.settings > summary::-webkit-details-marker { display: none; }
.settings[open] > summary { border-color: var(--accent); }

.settings-panel {
  position: absolute;
  z-index: 10;
  top: calc(100% + 2px);
  left: 10px;
  right: 10px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 14px;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.18);
  display: grid;
  gap: 12px;
}

.settings-panel .row { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.settings-panel .row.check { justify-content: flex-start; align-items: flex-start; cursor: pointer; }
.settings-panel .row.check input { width: 22px; height: 22px; margin: 1px 0 0; flex: none; accent-color: var(--accent); }
.settings-panel small { display: block; color: var(--muted); font-size: 0.82rem; }
.settings-panel select {
  font: inherit;
  padding: 8px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--fg);
  max-width: 60%;
}
.settings-panel .buttons { justify-content: flex-start; flex-wrap: wrap; }
.fineprint { margin: 0; font-size: 0.8rem; color: var(--muted); }

/* ---------- Stats ---------- */

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
  padding: 4px 14px;
}
.stat {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 6px 4px;
  text-align: center;
  display: flex;
  flex-direction: column;
}
.stat-val { font-size: 1.15rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.stat-label { font-size: 0.72rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.05em; }

/* ---------- Practice area ---------- */

.practice {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 8px 16px 12px;
  text-align: center;
  min-height: 0;
}

.progress { margin: 0 0 4px; color: var(--muted); font-size: 0.85rem; }

.target {
  font-family: var(--font-he);
  font-size: clamp(3rem, 15vw, 5.5rem);
  font-weight: 700;
  line-height: 1.15;
  min-height: 1.15em;
  direction: rtl;
  unicode-bidi: isolate;
  word-break: keep-all;
  overflow-wrap: anywhere;
}
.target .ch {
  display: inline-block;
  padding: 0 0.02em;
  border-bottom: 0.06em solid transparent;
  transition: color 80ms, background-color 80ms;
  border-radius: 0.08em;
}
.target .ch.ok { color: var(--ok); }
.target .ch.bad {
  color: var(--bad);
  background: var(--bad-bg);
  text-decoration: underline wavy var(--bad);
  text-decoration-thickness: 0.04em;
  text-underline-offset: 0.18em;
}
.target .ch.cur { border-bottom-color: var(--accent); }
.target.done-perfect .ch { color: var(--ok); }

.translit { margin: 2px 0 0; font-size: 1.15rem; color: var(--muted); font-style: italic; }
.meaning { margin: 2px 0 12px; font-size: 1.15rem; font-weight: 600; }

.type-input {
  width: 100%;
  max-width: 420px;
  font-family: var(--font-he);
  font-size: 1.6rem; /* >= 16px prevents iOS zoom-on-focus */
  text-align: center;
  direction: rtl;
  padding: 10px 14px;
  border-radius: 12px;
  border: 2px solid var(--border);
  background: var(--card);
  color: var(--fg);
  outline: none;
}
.type-input:focus { border-color: var(--accent); }
.type-input::placeholder { color: var(--muted); opacity: 0.6; font-size: 1.1rem; }

.result {
  min-height: 1.6em;
  margin-top: 10px;
  font-size: 1.1rem;
  font-weight: 700;
}
.result.great { color: var(--ok); }
.result.retry { color: var(--bad); }
.result.info { color: var(--accent); }

.actions { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; margin-top: 6px; }

.btn {
  font: inherit;
  font-size: 0.95rem;
  min-height: 44px;
  padding: 8px 16px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--fg);
  cursor: pointer;
  touch-action: manipulation;
}
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-fg); font-weight: 700; }
.btn.danger { color: var(--bad); }
.btn:focus-visible, .key:focus-visible, .settings > summary:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

/* ---------- Virtual keyboard ---------- */
/* The rows mirror a physical keyboard (left-to-right key positions),
   so the container is dir="ltr"; the letters on the keys are Hebrew. */

.keyboard {
  --kw: calc((100% - 9 * var(--gap)) / 10.25); /* one key width; % = row width */
  background: var(--kb-bg);
  padding: 8px 4px calc(8px + env(safe-area-inset-bottom));
  border-top: 1px solid var(--border);
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
  touch-action: manipulation;
}

.kb-row { display: flex; gap: var(--gap); margin-bottom: var(--gap); }
.kb-row:last-child { margin-bottom: 0; }

.key {
  position: relative;
  flex: 0 0 var(--kw);
  width: var(--kw);
  min-width: 0;
  height: 50px;
  padding: 0;
  border: 0;
  border-radius: 7px;
  background: var(--key);
  color: var(--key-fg);
  box-shadow: var(--key-shadow);
  font-family: var(--font-he);
  font-size: 1.45rem;
  line-height: 1;
  cursor: pointer;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  transition: background-color 90ms, transform 60ms;
}
.key .heb { pointer-events: none; }
.key .lat {
  position: absolute;
  top: 3px;
  left: 5px;
  font-family: var(--font-ui);
  font-size: 0.62rem;
  color: var(--muted);
  text-transform: uppercase;
  pointer-events: none;
}
.no-labels .key .lat { display: none; }

/* Physical stagger: A row is offset 1/4 key from Q row, Z row 3/4 key. */
.kb-row.r1 .key:first-child { margin-left: calc(var(--kw) * 0.25); }
.kb-row.r2 .key:first-child { margin-left: calc(var(--kw) * 0.75); }

.key.mod { background: var(--key-mod); font-family: var(--font-ui); font-size: 1rem; }
.key.back { flex: 0 0 calc(var(--kw) * 1.75); }
.key.space { flex: 1 1 auto; width: auto; }
.key.enter { flex: 0 0 calc(var(--kw) * 1.75); }

.key.hint { background: var(--hint); color: var(--hint-fg); }
.key.hint .lat { color: rgba(0, 0, 0, 0.55); }
.key.pressed { transform: translateY(1px) scale(0.96); filter: brightness(0.88); }

@media (hover: hover) {
  .key:hover { filter: brightness(0.96); }
}

/* Small phones: a touch more compact so everything fits without scrolling. */
@media (max-height: 640px) {
  .key { height: 44px; }
  .target { font-size: clamp(2.6rem, 13vw, 4.5rem); }
  .meaning { margin-bottom: 8px; }
}

/* Tablet / desktop */
@media (min-width: 600px) {
  :root { --gap: 7px; }
  .brand { font-size: 1.3rem; }
  .key { height: 58px; font-size: 1.7rem; border-radius: 9px; }
  .key .lat { font-size: 0.72rem; }
  .keyboard { border: 1px solid var(--border); border-radius: 16px 16px 0 0; padding: 12px 10px 14px; }
  .settings-panel { left: auto; width: 380px; right: 14px; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}

.noscript { padding: 20px; text-align: center; }