/* ============================================================
   PolyType WebSite — calm writing tool
   Ergonomics first: soft, warm, low-contrast surfaces, one
   quiet accent, generous space. Comfortable for long sessions.
   Light (paper) by default; dark (soft charcoal) on toggle.
   ============================================================ */

:root {
  /* warm paper light theme */
  --bg: #f5f1e8;
  --surface: #fffdf8;
  --surface-2: #faf6ed;
  --border: #ded7c8;
  --border-soft: #ebe4d6;
  --ink: #302d28;
  --ink-2: #5a554c;
  --ink-3: #8c867b;
  --ink-4: #aaa398;
  --accent: #3d8876;          /* calm sage-teal */
  --accent-ink: #2f6b5d;
  --accent-soft: #e4eee9;
  --focus: rgba(63, 141, 123, 0.32);
  --shadow: 0 1px 1px rgba(44, 39, 31, 0.035), 0 12px 28px -24px rgba(44, 39, 31, 0.28);
  --inset: inset 0 1px 0 rgba(255, 255, 255, 0.55);

  --radius: 10px;
  --radius-sm: 8px;
  --maxw: 1080px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, Helvetica, Arial, sans-serif;
  --mono: "SF Mono", ui-monospace, "JetBrains Mono", Menlo, Consolas, monospace;
  --texture: rgba(62, 53, 40, 0.035);
  --fiber: rgba(255, 255, 255, 0.32);
  --glow: rgba(63, 141, 123, 0.045);
}

[data-theme="dark"] {
  --texture: rgba(255, 255, 255, 0.022);
  --glow: rgba(116, 194, 175, 0.06);
  --bg: #1b1c1e;
  --surface: #242528;
  --surface-2: #1f2022;
  --border: #34353a;
  --border-soft: #2b2c30;
  --ink: #e9e7e1;
  --ink-2: #b6b2aa;
  --ink-3: #837f78;
  --ink-4: #5f5c56;
  --accent: #74c2af;
  --accent-ink: #8fd0bf;
  --accent-soft: #21302c;
  --focus: rgba(116, 194, 175, 0.32);
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.2), 0 10px 28px -18px rgba(0, 0, 0, 0.5);
  --inset: inset 0 1px 0 rgba(255, 255, 255, 0.045);
  --fiber: rgba(255, 255, 255, 0.018);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  /* a calm base + a faint dot-grid texture + a soft accent glow at the top — kept barely-there */
  background-color: var(--bg);
  background-image:
    radial-gradient(120% 380px at 50% -120px, var(--glow), transparent 70%),
    linear-gradient(90deg, transparent 0, var(--fiber) 48%, transparent 100%),
    radial-gradient(var(--texture) 0.8px, transparent 1px);
  background-size: 100% 100%, 420px 100%, 20px 20px;
  background-position: 0 0, 50% 0, -10px -10px;
  background-attachment: fixed, scroll;
  color: var(--ink);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
  transition: background 0.3s ease, color 0.3s ease;
}

a { color: var(--accent-ink); text-decoration: none; }
a:hover { color: var(--accent); }
img { max-width: 100%; display: block; }
::selection { background: var(--accent-soft); }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.narrow { max-width: 720px; }

h1, h2, h3 { line-height: 1.2; letter-spacing: -0.01em; font-weight: 650; }
h1 { font-size: clamp(1.6rem, 3.5vw, 2.2rem); }
h2 { font-size: clamp(1.3rem, 2.6vw, 1.7rem); }
.muted { color: var(--ink-3); }
.lead { color: var(--ink-2); font-size: 1.05rem; }

/* ============================================================
   Top bar — quiet
   ============================================================ */
.topbar {
  position: sticky; top: 0; z-index: 30;
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: saturate(120%) blur(10px);
  -webkit-backdrop-filter: saturate(120%) blur(10px);
  border-bottom: 1px solid var(--border-soft);
}
.topbar-in { display: flex; align-items: center; justify-content: space-between; height: 58px; gap: 16px; }
.brand { display: flex; align-items: center; gap: 9px; font-weight: 650; color: var(--ink); font-size: 1.02rem; letter-spacing: -0.01em; }
.brand:hover { color: var(--ink); }
.brand img { width: 26px; height: 26px; border-radius: 7px; }
.brand .dot { color: var(--accent); }
.topbar-tools { display: flex; align-items: center; gap: 10px; }

/* language switcher */
.lang-switch {
  position: relative;
}
.lang-switch select {
  appearance: none; -webkit-appearance: none;
  font: inherit; font-size: 0.92rem; font-weight: 550;
  color: var(--ink); background: var(--surface);
  border: 1px solid var(--border); border-radius: 100px;
  padding: 7px 32px 7px 15px; cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}
.lang-switch select:hover { border-color: var(--ink-4); }
.lang-switch::after {
  content: ""; position: absolute; right: 13px; top: 50%;
  width: 7px; height: 7px; border-right: 1.5px solid var(--ink-3); border-bottom: 1.5px solid var(--ink-3);
  transform: translateY(-65%) rotate(45deg); pointer-events: none;
}

/* interface-language toggle — a compact globe icon-button (a setting, like the theme toggle;
   NOT a second language dropdown — the "Russian ▾" select is the page/keyboard switcher) */
.ui-lang {
  display: inline-flex; align-items: center; gap: 6px; height: 38px; padding: 0 13px 0 11px;
  border-radius: 100px; background: var(--surface); border: 1px solid var(--border);
  color: var(--ink-2); cursor: pointer; font: inherit; font-size: 0.8rem; font-weight: 600;
  white-space: nowrap; transition: border-color 0.15s, color 0.15s, background 0.15s;
}
.ui-lang:hover { border-color: var(--ink-4); color: var(--ink); }
.ui-lang svg { width: 16px; height: 16px; opacity: 0.7; }
.ui-lang-lbl { line-height: 1; }

/* icon button (theme toggle) */
.icon-btn {
  display: grid; place-items: center;
  width: 38px; height: 38px; border-radius: 100px;
  background: var(--surface); border: 1px solid var(--border); color: var(--ink-2);
  cursor: pointer; transition: all 0.15s;
}
.icon-btn:hover { border-color: var(--ink-4); color: var(--ink); }
.icon-btn svg { width: 18px; height: 18px; }
.theme-sun { display: none; } .theme-moon { display: block; }
[data-theme="dark"] .theme-sun { display: block; } [data-theme="dark"] .theme-moon { display: none; }

/* ============================================================
   The tool
   ============================================================ */
.tool { padding: clamp(22px, 4vw, 40px) 0 56px; }
.tool-title { text-align: center; margin-bottom: 22px; }
.tool-title h1 { margin-bottom: 6px; font-weight: 600; }
.tool-title p { color: var(--ink-3); font-size: 0.98rem; }
.tool-title .native { color: var(--ink-3); margin-top: 4px; font-size: 0.95rem; }

/* mode pills */
.modes { display: flex; flex-wrap: wrap; gap: 7px; justify-content: center; margin-bottom: 18px; }
.pt-mode {
  font: inherit; font-size: 0.9rem; font-weight: 550;
  padding: 8px 16px; border-radius: 100px; cursor: pointer;
  background: transparent; border: 1px solid var(--border); color: var(--ink-2);
  transition: all 0.15s;
}
.pt-mode:hover { border-color: var(--ink-4); color: var(--ink); }
.pt-mode.active { background: var(--accent); border-color: var(--accent); color: #fff; }
[data-theme="dark"] .pt-mode.active { color: #15201d; }

/* panes */
.panes { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.pane {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow);
  display: flex; flex-direction: column; min-height: 340px; overflow: hidden;
  transition: border-color 0.15s;
}
.pane:focus-within { border-color: color-mix(in srgb, var(--accent) 50%, var(--border)); }
.pane-bar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 18px; border-bottom: 1px solid var(--border-soft);
  font-size: 0.74rem; text-transform: uppercase; letter-spacing: 0.07em; color: var(--ink-3); font-weight: 600;
}
.pane-actions { display: flex; gap: 6px; }
.pt-mini {
  font: inherit; font-size: 0.78rem; font-weight: 550; text-transform: none; letter-spacing: 0;
  padding: 5px 13px; border-radius: 8px; cursor: pointer;
  background: var(--surface-2); border: 1px solid var(--border); color: var(--ink-2);
  transition: all 0.15s;
}
.pt-mini:hover { color: var(--ink); border-color: var(--ink-4); }
.pt-mini.ok { color: var(--accent-ink); border-color: color-mix(in srgb, var(--accent) 45%, var(--border)); background: var(--accent-soft); }

#pt-source, #pt-result {
  flex: 1; width: 100%; margin: 0; padding: 22px 22px 26px;
  font-family: var(--font); font-size: 1.18rem; line-height: 1.75; color: var(--ink);
  background: transparent; border: 0; resize: none;
  white-space: pre-wrap; word-break: break-word; overflow-y: auto;
}
#pt-source:focus { outline: none; }
#pt-source::placeholder { color: var(--ink-4); }
#pt-result:empty::before { content: attr(data-placeholder); color: var(--ink-4); }
#pt-result.pending { opacity: 0.45; }

.pt-statusbar {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  margin-top: 12px; padding: 0 4px; min-height: 20px; font-size: 0.82rem; color: var(--ink-4);
}
#pt-status { color: var(--ink-3); }

/* candidate window */
.pt-candidates {
  margin-top: 14px; padding: 13px 18px;
  background: var(--surface-2); border: 1px solid var(--border-soft); border-radius: var(--radius-sm);
  display: flex; flex-wrap: wrap; gap: 8px 16px; align-items: center; font-size: 0.9rem;
}
.pt-cand-label { color: var(--ink-4); font-weight: 600; font-size: 0.74rem; text-transform: uppercase; letter-spacing: 0.06em; }
.pt-cand { color: var(--ink-2); }
.pt-cand b { font-weight: 600; color: var(--ink); }
.pt-cand code { font-family: var(--mono); font-size: 0.86em; background: var(--surface); border: 1px solid var(--border-soft); border-radius: 5px; padding: 1px 6px; color: var(--accent-ink); }

/* ============================================================
   On-screen phonetic keyboard
   ============================================================ */
.pt-kbd { margin-top: 18px; }
.pt-kbd-bar {
  display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  margin-bottom: 12px;
}
.pt-kbd-hint { font-size: 0.84rem; color: var(--ink-4); }
.pt-kbd-scheme { display: flex; align-items: center; gap: 8px; }
.pt-kbd-scheme-l { font-size: 0.8rem; color: var(--ink-3); }
.pt-kbd-scheme select {
  appearance: none; -webkit-appearance: none; font: inherit; font-size: 0.85rem; font-weight: 550;
  color: var(--ink); background: var(--surface); border: 1px solid var(--border); border-radius: 8px;
  padding: 5px 26px 5px 11px; cursor: pointer;
  background-image: linear-gradient(45deg, transparent 50%, var(--ink-3) 50%), linear-gradient(135deg, var(--ink-3) 50%, transparent 50%);
  background-position: calc(100% - 14px) 52%, calc(100% - 9px) 52%; background-size: 5px 5px, 5px 5px; background-repeat: no-repeat;
}
.pt-kbd-scheme select:hover { border-color: var(--ink-4); }

.pt-kbd-row { display: flex; gap: 6px; justify-content: center; margin-bottom: 6px; flex-wrap: wrap; }
.pt-key {
  position: relative; font: inherit; cursor: pointer;
  width: 52px; height: 52px; padding: 0;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  background: var(--surface); border: 1px solid var(--border); border-radius: 10px;
  color: var(--ink); box-shadow: var(--shadow); transition: transform 0.08s, border-color 0.12s, background 0.12s;
}
.pt-key:hover { border-color: color-mix(in srgb, var(--accent) 45%, var(--border)); }
.pt-key:active { transform: translateY(1px); background: var(--accent-soft); }
.pt-key-sub { position: absolute; top: 4px; left: 6px; font-size: 0.6rem; color: var(--ink-4); line-height: 1; }
.pt-key-main { font-size: 1.25rem; font-weight: 500; line-height: 1; }
.pt-key-badge { position: absolute; bottom: 3px; right: 0; left: 0; text-align: center; font-size: 0.52rem; color: var(--ink-4); }
/* layout: QWERTY left, extra-letters + symbols as compact 4-tall columns on the right */
.pt-kbd-body { display: flex; gap: 16px; align-items: flex-start; justify-content: center; flex-wrap: wrap; }
.pt-kbd-qwerty { display: flex; flex-direction: column; gap: 6px; }
.pt-kbd-qwerty .pt-kbd-row { margin-bottom: 0; }
.pt-kbd-side { display: flex; gap: 8px; align-items: flex-start; }
.pt-kbd-grid { display: grid; grid-auto-flow: column; grid-template-rows: repeat(4, auto); gap: 5px; }
.pt-kbd-side .pt-key { width: 42px; height: 39px; }
.pt-key-extra { background: var(--surface-2); }
.pt-key-extra .pt-key-main { font-size: 1.1rem; color: var(--accent-ink); }
.pt-key-sym { background: transparent; border-style: dashed; }
.pt-key-sym .pt-key-main { font-size: 1rem; color: var(--ink-2); font-weight: 400; }
.pt-key-sym:hover { background: var(--surface-2); border-style: solid; }

/* "open as floating window" button in the keyboard bar */
.pt-kbd-pop {
  font: inherit; font-size: 0.82rem; font-weight: 550; cursor: pointer;
  padding: 6px 13px; border-radius: 100px; margin-left: auto;
  background: var(--surface); border: 1px solid var(--border); color: var(--ink-2);
  transition: all 0.15s; white-space: nowrap;
}
.pt-kbd-pop:hover { border-color: color-mix(in srgb, var(--accent) 45%, var(--border)); color: var(--ink); }
.pt-kbd-pop span { color: var(--accent-ink); }

/* ============================================================
   Floating popup window (popup.html)
   ============================================================ */
body.popup {
  min-height: 100vh; padding: 12px 14px 14px; display: flex; flex-direction: column; gap: 10px;
  background-attachment: scroll, scroll;
}
.popup-bar { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.popup-title { display: flex; align-items: center; gap: 8px; font-size: 0.92rem; color: var(--ink-2); min-width: 0; }
.popup-title img { width: 22px; height: 22px; border-radius: 6px; }
.popup-title b { font-weight: 600; color: var(--ink); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.popup-tools { display: flex; align-items: center; gap: 7px; }
.popup-tools .icon-btn { width: 32px; height: 32px; }
.popup-input {
  width: 100%; min-height: 64px; resize: vertical; flex: 0 0 auto;
  padding: 12px 14px; font-family: var(--font); font-size: 1.1rem; line-height: 1.55; color: var(--ink);
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm);
}
.popup-input:focus { outline: none; border-color: color-mix(in srgb, var(--accent) 50%, var(--border)); }
body.popup .pt-kbd { margin-top: 0; }
body.popup .pt-key { width: 46px; height: 44px; }
body.popup .pt-key-main { font-size: 1.1rem; }
body.popup .pt-key-extra, body.popup .pt-key-sym { width: 40px; height: 38px; }
body.popup .pt-kbd-row { gap: 5px; margin-bottom: 5px; }
.popup-foot { font-size: 0.76rem; color: var(--ink-4); margin-top: auto; text-align: center; }

/* compact "keyboard-first" tool page so the keyboard sits on the first screen */
.tool-kbd { padding-top: clamp(14px, 2.5vw, 22px); }
.tool-kbd .tool-title { margin-bottom: 14px; }
.tool-kbd .tool-title h1 { font-size: clamp(1.5rem, 3.6vw, 2.1rem); }
.tool-kbd .tool-title p { font-size: 0.95rem; }
.tool-kbd .tool-title .native { margin-top: 2px; }
.tool-kbd #pt-source { min-height: 120px; font-size: 1.12rem; }

@media (max-width: 560px) {
  .pt-key { width: 8.6vw; height: 46px; min-width: 30px; }
  .pt-key-main { font-size: 1.05rem; }
  .pt-key-extra { width: 40px; }
}

/* ============================================================
   Generic button (calm, subtle)
   ============================================================ */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  font: inherit; font-size: 0.95rem; font-weight: 550;
  padding: 11px 20px; border-radius: var(--radius-sm); cursor: pointer;
  border: 1px solid var(--border); background: var(--surface); color: var(--ink);
  transition: all 0.15s;
}
.btn:hover { border-color: var(--ink-4); }
.btn-accent { background: var(--accent); border-color: var(--accent); color: #fff; }
[data-theme="dark"] .btn-accent { color: #15201d; }
.btn-accent:hover { background: var(--accent-ink); border-color: var(--accent-ink); color: #fff; }
[data-theme="dark"] .btn-accent:hover { color: #15201d; }

/* ============================================================
   Home hub
   ============================================================ */
.hub { padding: clamp(40px, 9vw, 96px) 0 60px; text-align: center; }
.hub h1 { font-size: clamp(1.9rem, 4.5vw, 2.8rem); font-weight: 600; margin-bottom: 14px; }
.hub .lead { max-width: 560px; margin: 0 auto 8px; }
.hub .native { color: var(--ink-4); font-size: 0.98rem; margin-bottom: 40px; }
.lang-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 12px; text-align: left; max-width: 760px; margin: 0 auto; }
.lang-card {
  display: flex; flex-direction: column; gap: 3px; padding: 18px 20px;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  color: var(--ink); transition: all 0.16s; box-shadow: var(--shadow);
}
.lang-card:hover { transform: translateY(-2px); border-color: color-mix(in srgb, var(--accent) 40%, var(--border)); color: var(--ink); }
.lang-card .glyph { font-size: 1.7rem; font-weight: 600; color: var(--accent); line-height: 1.1; margin-bottom: 6px; }
.lang-card .name { font-weight: 600; }
.lang-card .native { font-size: 0.84rem; color: var(--ink-4); }
.lang-card.soon { opacity: 0.55; }
.lang-card .soon-tag { margin-top: 8px; font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-4); }

/* ============================================================
   Prose (letters, about)
   ============================================================ */
.prose { max-width: 680px; margin: 0 auto; }
.prose h2 { margin: 36px 0 14px; }
.prose p { color: var(--ink-2); margin-bottom: 16px; }
.prose ul { margin: 0 0 16px 20px; color: var(--ink-2); }
.prose li { margin-bottom: 7px; }
code { font-family: var(--mono); }
:not(pre) > code { font-size: 0.88em; background: var(--surface-2); border: 1px solid var(--border-soft); border-radius: 6px; padding: 1px 6px; color: var(--accent-ink); }
.codeblock { background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 16px 18px; font-family: var(--mono); font-size: 0.9rem; color: var(--ink-2); overflow-x: auto; }
kbd { font-family: var(--font); font-size: 0.84em; font-weight: 600; padding: 2px 7px; border-radius: 6px; background: var(--surface); border: 1px solid var(--border); border-bottom-width: 2px; color: var(--ink-2); white-space: nowrap; }

.tbl { width: 100%; border-collapse: collapse; margin: 20px 0; font-size: 0.94rem; }
.tbl th, .tbl td { text-align: left; padding: 11px 14px; border-bottom: 1px solid var(--border); }
.tbl th { color: var(--ink-4); font-weight: 600; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.05em; }
.tbl td { color: var(--ink-2); }

.pills { display: flex; flex-wrap: wrap; gap: 8px; }
.pill { font-size: 0.85rem; padding: 6px 13px; border-radius: 100px; background: var(--surface); border: 1px solid var(--border); color: var(--ink-2); }
a.pill:hover { border-color: var(--ink-4); color: var(--ink); }

/* page hero (letters/about) */
.page-hero { padding: clamp(36px, 6vw, 64px) 0 24px; text-align: center; }
.page-hero h1 { margin-bottom: 12px; font-weight: 600; }

/* ============================================================
   Footer — quiet
   ============================================================ */
.foot { border-top: 1px solid var(--border-soft); margin-top: 48px; padding: 28px 0 40px; }
.foot-in { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; font-size: 0.85rem; color: var(--ink-4); }
.privacy-note { flex-basis: 100%; color: var(--ink-3); font-size: 0.82rem; }
.foot-links { display: flex; gap: 20px; flex-wrap: wrap; }
.foot-links a { color: var(--ink-3); }
.foot-links a:hover { color: var(--ink); }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 720px) {
  .panes { grid-template-columns: 1fr; }
  .pane { min-height: 200px; }
}
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}