/*
 * musemesh - one-screen DOS-style site. Two-color monochrome via --bg/--ink
 * (dark default; [data-theme="light"] inverts - round 3).
 * Specs: docs/superpowers/specs/2026-07-12-musemesh-website-design.md
 *   + 2026-07-16-musemesh-site-round2-design.md
 *   + 2026-07-16-musemesh-free-for-now-design.md (round 3)
 *
 * Font: "PxPlus IBM VGA 8x16" (Web build) from The Ultimate Oldschool PC
 * Font Pack v2.2 by VileR (https://int10h.org/oldschool-pc-fonts/),
 * CC BY-SA 4.0. This attribution must be kept (also in README.md).
 */
@font-face {
  font-family: 'DOS VGA';
  src: url('assets/WebPlus_IBM_VGA_8x16.woff') format('woff');
  font-display: swap;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

:root { --bg: #000; --ink: #fff; color-scheme: dark; }
:root[data-theme="light"] { --bg: #fff; --ink: #000; color-scheme: light; }

html, body { height: 100%; overflow: hidden; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: 'DOS VGA', 'Courier New', monospace;
  display: flex;
  align-items: center;
  justify-content: center;
}

a { color: inherit; }

button {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

:focus-visible { outline: 3px solid var(--ink); outline-offset: 2px; }

::selection { background: var(--ink); color: var(--bg); }

/* ---- the DOS window (above the z-index:0 sketch canvas) ---- */
.win {
  position: relative;
  z-index: 1;
  background: var(--bg);
  border: 3px double var(--ink);
  width: min(92vw, 640px);
  /* flex-item guard (S400 backport): min-width:auto would floor the window
     at content min-content, so one unbreakable run could push it past 92vw */
  min-width: 0;
  max-height: 94vh;  /* fallback for pre-svh Safari */
  max-height: 94svh;
  display: flex;
  flex-direction: column;
}

.titlebar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 3px double var(--ink);
  padding: 4px 10px;
  font-size: clamp(0.9rem, 2.6vw, 1.05rem);
}

.menu {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  padding: 16px 10px 0;
  font-size: clamp(0.85rem, 2.8vw, 1rem);
}
.menu-btn { padding: 1px 7px; letter-spacing: 1.2px; }
.menu-btn.active { background: var(--ink); color: var(--bg); }
.sep { opacity: 0.5; }

/* ---- panes: all stacked in one grid cell so the window is sized by the
   tallest pane and never jumps on switch; [hidden] keeps layout via
   visibility so that sizing holds. overflow-y is the spec-7 safety valve. */
.panes { display: grid; overflow-y: auto; }
.pane {
  grid-area: 1 / 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 22px 20px 26px;
  text-align: center;
}
.pane[hidden] { display: flex; visibility: hidden; }

.wordmark {
  font-size: clamp(2.2rem, 9vw, 4rem);
  font-weight: normal;
  letter-spacing: 2px;
}
h2 {
  font-size: clamp(1.2rem, 4.2vw, 1.6rem);
  font-weight: normal;
  letter-spacing: 1px;
}
.pane p { font-size: clamp(1.05rem, 3.8vw, 1.375rem); line-height: 1.5; }
.lines { text-align: left; }
.about-text { max-width: 34ch; }

.btn-box {
  border: 2px solid var(--ink);
  background: var(--bg);
  padding: 8px 22px;
  font-size: clamp(1rem, 3.4vw, 1.25rem);
}

.statusline {
  border-top: 3px double var(--ink);
  padding: 3px 10px;
  font-size: clamp(0.8rem, 2.4vw, 0.95rem);
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
}

/* ---- round 2: RUN A ROOM commerce controls ---- */
a.btn-box { display: inline-block; text-decoration: none; }
.coupon-row { display: flex; align-items: center; gap: 8px; }
#coupon-input {
  font: inherit;
  color: inherit;
  background: var(--bg);
  border: 2px solid var(--ink);
  padding: 2px 8px;
  width: 12ch;
  text-transform: uppercase;
}
.dl-note { font-size: clamp(0.85rem, 2.6vw, 1rem); }

/* ---- round 3: fixed corner toggles (outside the window, above it) ---- */
.corner {
  position: fixed;
  top: 10px;
  z-index: 2;
  border: 2px solid var(--ink);
  background: var(--bg);
  padding: 3px 9px;
  font-size: clamp(0.75rem, 2.2vw, 0.9rem);
}
.corner-left { left: 10px; }
.corner-right { right: 10px; }

/* landscape phones: tighten so one screen still holds everything */
@media (max-height: 420px) {
  .pane { gap: 8px; padding: 10px 16px 12px; }
  .wordmark { font-size: clamp(1.4rem, 9vh, 2.2rem); }
  .pane p { font-size: clamp(0.9rem, 4.5vh, 1.1rem); }
}

/* portrait phones: shrink the MENU font (both languages) until the four sr
   labels fit one line at 390px (spec 10 STOP resolution, 7faa037) - the
   1.2px letter-spacing is fixed-width, so only the glyph advances scale */
@media (max-width: 450px) {
  .menu { font-size: 0.69rem; }
}

/* ---- the [X] crash egg (2026-07-17 website-crash-egg spec; keyframes
   ported from the S400 room-pages dos.css) ---- */
@keyframes win-shake {
  0%   { transform: translate(0, 0) rotate(0deg); }
  10%  { transform: translate(-6px, 3px) rotate(-0.6deg); }
  20%  { transform: translate(5px, -4px) rotate(0.5deg); }
  30%  { transform: translate(-4px, -3px) rotate(-0.4deg); }
  40%  { transform: translate(6px, 2px) rotate(0.6deg); }
  50%  { transform: translate(-5px, 4px) rotate(-0.5deg); }
  60%  { transform: translate(4px, -2px) rotate(0.4deg); }
  70%  { transform: translate(-6px, -4px) rotate(-0.6deg); }
  80%  { transform: translate(5px, 3px) rotate(0.5deg); }
  90%  { transform: translate(-3px, 2px) rotate(-0.3deg); }
  100% { transform: translate(0, 0) rotate(0deg); }
}
.win.shaking { animation: win-shake 1s linear; }
/* reduced-motion fallback — filter inverts the WHOLE window incl. child
   backgrounds, and works in both themes */
.win.crashed { filter: invert(1); }