/* =========================================================
   Writetyper — Base & Layout
   Reset-lite, page chrome, header/footer, helpers.
   ========================================================= */

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

* {
  margin: 0;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  /* Decorative carriage knobs extend past the machine by design; on narrow
     screens their tips would reach the viewport edge. Clip the page so they
     never create a stray horizontal scrollbar. */
  overflow-x: hidden;
}

body {
  min-height: 100vh;
  font-family: var(--font-serif);
  font-size: var(--fs-body);
  line-height: 1.6;
  color: var(--text);
  background-color: var(--bg);
  /* Warm paper-grain made from layered gradients — no image requests */
  background-image:
    radial-gradient(circle at 18% 12%, rgba(201, 162, 39, 0.06), transparent 42%),
    radial-gradient(circle at 84% 8%, rgba(139, 111, 71, 0.07), transparent 40%),
    radial-gradient(circle at 50% 120%, rgba(47, 74, 60, 0.08), transparent 55%),
    repeating-linear-gradient(0deg, rgba(120, 96, 64, 0.018) 0 2px, transparent 2px 4px);
  background-attachment: fixed;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

img,
svg {
  display: block;
  max-width: 100%;
}

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

:focus-visible {
  outline: 3px solid var(--focus-ring);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---- Accessibility helpers ---- */
.sr-only {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: 50%;
  top: -100px;
  transform: translateX(-50%);
  z-index: 50;
  padding: 0.6rem 1.1rem;
  background: var(--forest);
  color: var(--cream);
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  text-decoration: none;
  transition: top var(--t-fast) var(--ease-soft);
}

.skip-link:focus {
  top: 0;
}

/* ---- Desk / page frame ---- */
.desk {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: clamp(1.5rem, 1rem + 3vw, 4rem) clamp(1rem, 0.5rem + 3vw, 3rem) 2rem;
  gap: var(--sp-5);
}

/* ---- Header ---- */
.site-header {
  text-align: center;
  max-width: 34rem;
}

.brandmark {
  font-family: var(--font-type);
  letter-spacing: 0.35em;
  text-transform: uppercase;
  font-size: 0.72rem;
  color: var(--brown);
  margin-bottom: var(--sp-2);
  opacity: 0.85;
}

.site-title {
  font-family: var(--font-type);
  font-weight: 400;
  font-size: var(--fs-title);
  letter-spacing: 0.02em;
  color: var(--ink);
  line-height: 1.1;
}

.site-subtitle {
  margin-top: var(--sp-2);
  font-size: var(--fs-subtitle);
  color: var(--text-muted);
}

/* ---- Main layout ---- */
.layout {
  width: 100%;
  max-width: var(--maxw);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-6);
}

/* ---- Footer ---- */
.site-footer {
  margin-top: var(--sp-3);
  font-size: var(--fs-small);
  color: var(--ink-faint);
  text-align: center;
}

.site-footer a {
  color: var(--brown-deep);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-thickness: 1px;
  transition: color var(--t-fast) var(--ease-soft);
}

.site-footer a:hover {
  color: var(--forest);
}

/* ---- Shared button base ---- */
.btn {
  font-family: var(--font-serif);
  border-radius: var(--radius-md);
  transition: transform var(--t-fast) var(--ease-soft),
    box-shadow var(--t-med) var(--ease-soft),
    background-color var(--t-med) var(--ease-soft),
    color var(--t-med) var(--ease-soft);
  will-change: transform;
}

/* ---- Floating sound toggle ---- */
.sound-toggle {
  position: fixed;
  right: clamp(0.8rem, 2vw, 1.6rem);
  bottom: clamp(0.8rem, 2vw, 1.6rem);
  z-index: 40;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.9rem;
  font-size: var(--fs-small);
  letter-spacing: 0.04em;
  color: var(--cream);
  background: linear-gradient(180deg, var(--forest-bright), var(--forest));
  border-radius: 999px;
  box-shadow: var(--shadow-soft);
  transition: transform var(--t-fast) var(--ease-soft),
    box-shadow var(--t-med) var(--ease-soft), opacity var(--t-med);
}

.sound-toggle:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lift);
}

.sound-icon {
  width: 16px;
  height: 16px;
  position: relative;
  display: inline-block;
}

/* speaker body */
.sound-icon::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  width: 7px;
  height: 8px;
  background: currentColor;
  clip-path: polygon(0 30%, 45% 30%, 100% 0, 100% 100%, 45% 70%, 0 70%);
}

/* sound waves / mute slash */
.sound-icon::after {
  content: "";
  position: absolute;
  right: 0;
  top: 3px;
  width: 8px;
  height: 10px;
  border: 1.6px solid currentColor;
  border-left: none;
  border-radius: 0 8px 8px 0;
  opacity: 0.9;
}

.sound-toggle[aria-pressed="true"] .sound-icon::after {
  /* muted: replace waves with a slash */
  border: none;
  width: 16px;
  height: 1.8px;
  top: 7px;
  right: -1px;
  background: currentColor;
  transform: rotate(-45deg);
  border-radius: 2px;
}

.sound-toggle[aria-pressed="true"] {
  background: linear-gradient(180deg, #6f6a5a, #59544a);
}