/* Keyboard tester. Keycaps are placed in "units" (one standard key = 1 unit). */
.kt-page { padding-bottom: 56px; --u: 42px; --cap: #fbf1dc; --cap-edge: #3a2a22; --cap-text: #3a2a22; }
:root[data-theme="dark"] .kt-page { --cap: #e8dbc2; --cap-edge: #0d0907; --cap-text: #2e211b; }

.kt-head { margin: 4px 0 18px; max-width: 720px; }
.kt-head h1 { font-size: clamp(28px, 4.5vw, 44px); line-height: 1.1; margin: 0 0 10px; }
.kt-lead { color: var(--text-2); margin: 0; line-height: 1.6; }

.kt-mobile-note { display: none; margin: 0 0 16px; padding: 12px 14px; border: 2px solid var(--espresso); border-radius: var(--radius-lg, 14px);
  background: var(--warning-soft); color: var(--text); box-shadow: var(--sticker, 3px 3px 0 var(--espresso)); font-size: 14px; line-height: 1.5; }
@media (pointer: coarse), (max-width: 640px) { .kt-mobile-note { display: block; } }

.kt-toolbar { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.kt-switch { display: flex; flex-wrap: wrap; gap: 8px; }
.kt-layout-btn { display: flex; flex-direction: column; align-items: flex-start; gap: 0; padding: 8px 14px; cursor: pointer; font: inherit; color: var(--text);
  background: var(--surface); border: 2px solid var(--espresso); border-radius: 12px; box-shadow: 2px 2px 0 var(--espresso); }
.kt-layout-btn:hover { transform: translate(-1px, -1px); box-shadow: 3px 3px 0 var(--espresso); }
.kt-layout-btn[aria-pressed="true"] { background: var(--mustard); color: #2e211b; box-shadow: 0 0 0 var(--espresso); transform: translate(2px, 2px); }
.kt-layout-name { font-weight: 800; font-size: 15px; }
.kt-layout-hint { font-size: 12px; opacity: 0.75; }
:root[data-theme="dark"] .kt-layout-btn { border-color: #000; box-shadow: 2px 2px 0 #000; }
:root[data-theme="dark"] .kt-layout-btn[aria-pressed="true"] { box-shadow: none; }

.kt-stats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; margin-bottom: 16px; }
.kt-stat { display: flex; flex-wrap: wrap; align-items: baseline; gap: 2px 6px; padding: 10px 14px; background: var(--surface); border: 2px solid var(--espresso);
  border-radius: 12px; box-shadow: var(--sticker, 3px 3px 0 var(--espresso)); }
:root[data-theme="dark"] .kt-stat { border-color: #000; }
.kt-stat-num { font-family: var(--font-display); font-weight: 800; font-size: 28px; line-height: 1; font-variant-numeric: tabular-nums; }
.kt-stat-of { color: var(--text-3); font-weight: 700; }
.kt-stat-label { flex-basis: 100%; font-size: 13px; color: var(--text-2); }
.kt-stat-warn .kt-stat-num { color: var(--warning); }

/* The board scrolls sideways inside its own frame, never the page. */
.kt-board-wrap { overflow-x: auto; overflow-y: hidden; max-width: 100%; padding: 18px; background: var(--surface-3); border: 2px solid var(--espresso);
  border-radius: 18px; box-shadow: var(--sticker, 3px 3px 0 var(--espresso)); -webkit-overflow-scrolling: touch; overscroll-behavior-x: contain; }
:root[data-theme="dark"] .kt-board-wrap { border-color: #000; background: #231915; }
.kt-board-wrap:focus-visible { outline: 3px solid var(--mustard); outline-offset: 2px; }
.kt-board { position: relative; width: calc(var(--kt-w, 15) * var(--u)); height: calc(var(--kt-h, 6.5) * var(--u)); margin: 0 auto; flex: none; }

.kt-key { position: absolute; left: calc(var(--x) * var(--u)); top: calc(var(--y) * var(--u)); width: calc(var(--w) * var(--u)); height: calc(var(--h) * var(--u));
  padding: 2px; box-sizing: border-box; user-select: none; }
.kt-cap { position: relative; display: flex; align-items: center; justify-content: center; width: 100%; height: 100%; box-sizing: border-box; overflow: hidden;
  font-size: 12px; font-weight: 700; color: var(--cap-text); background: var(--cap); border: 2px solid var(--cap-edge); border-radius: 7px;
  box-shadow: 0 3px 0 var(--cap-edge); transition: transform 60ms ease, box-shadow 60ms ease, background-color 120ms ease; }
.kt-key.is-tested .kt-cap { background: var(--mustard); }
.kt-key.is-down .kt-cap { background: var(--brick); color: #fff8ee; transform: translateY(3px); box-shadow: 0 0 0 var(--cap-edge); }
.kt-key.is-chatter .kt-cap { outline: 2px dashed var(--brick); outline-offset: -5px; }
.kt-key.is-chatter .kt-cap::after { content: "!"; position: absolute; top: 1px; right: 3px; width: 14px; height: 14px; line-height: 14px; text-align: center;
  font-size: 10px; font-weight: 800; color: #fff8ee; background: var(--brick); border-radius: 50%; }

.kt-type { margin: 20px 0 8px; }
.kt-type label { display: block; font-weight: 700; margin-bottom: 6px; }
.kt-type textarea { width: 100%; resize: vertical; }

.kt-notes { margin: 14px 0 0; padding-left: 20px; color: var(--text-2); font-size: 14px; line-height: 1.65; }
.kt-note { color: var(--text-2); }

.kt-prose { max-width: 760px; margin-top: 44px; line-height: 1.7; color: var(--text-2); }
.kt-prose h2 { font-size: clamp(22px, 3vw, 28px); color: var(--text); margin: 32px 0 10px; }
.kt-prose h3 { font-size: 17px; color: var(--text); margin: 18px 0 4px; }
.kt-prose p { margin: 0 0 10px; }
.kt-prose ol { padding-left: 22px; margin: 0; }
.kt-prose li { margin-bottom: 6px; }

.kt-cta { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; justify-content: space-between; margin-top: 36px; padding: 20px 22px;
  background: var(--accent-soft); border: 2px solid var(--espresso); border-radius: 18px; box-shadow: var(--sticker, 3px 3px 0 var(--espresso)); }
:root[data-theme="dark"] .kt-cta { border-color: #000; }
.kt-cta h2 { margin: 0 0 4px; }
.kt-cta p { margin: 0; }

@media (max-width: 640px) {
  .kt-page { --u: 34px; }
  .kt-board-wrap { padding: 12px; }
  .kt-cap { font-size: 10px; border-radius: 5px; }
  .kt-stats { gap: 8px; }
  .kt-stat { padding: 8px 10px; }
  .kt-stat-num { font-size: 22px; }
  .kt-stat-label { font-size: 12px; }
  .kt-reset { width: 100%; }
}
@media (prefers-reduced-motion: reduce) { .kt-cap { transition: none; } }