/* Aura — paper-and-keycap components, transcribed from app/_design/ui.tsx.
   Colours, radii, shadows and type come from tokens.css; per-size keycap
   geometry (--wall, --press, --skirt) stays local, as in the source. */

.aura-paper {
  position: relative;
  isolation: isolate;
  border-radius: var(--radius-paper);
  padding: clamp(22px, 2.1vw, var(--space-paper-y)) clamp(22px, 2.3vw, var(--space-paper-x));
  background: linear-gradient(152deg, var(--paper-hi) 0%, var(--paper) 44%, var(--paper-lo) 100%);
  border: 1px solid var(--paper-edge);
  box-shadow: var(--shadow-paper-base), var(--shadow-paper-lit-right);
}
.aura-paper[data-lit="left"] { box-shadow: var(--shadow-paper-base), var(--shadow-paper-lit-left); }
.aura-paper[data-lit="behind"] { box-shadow: var(--shadow-paper-base), var(--shadow-paper-lit-behind); }
.aura-paper::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  border-radius: inherit;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='g'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.62' numOctaves='4' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23g)'/%3E%3C/svg%3E");
  background-size: 180px 180px;
  mix-blend-mode: multiply;
  opacity: 0.115;
  pointer-events: none;
}

/* ---------------------------------------------------------------- type */

.aura-eyebrow {
  margin: 0 0 clamp(12px, 1.1vw, var(--space-eyebrow-gap));
  font-family: var(--font-pixel);
  font-size: clamp(11px, 0.78vw, 12.5px);
  line-height: 1;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--brand);
  display: flex;
  align-items: center;
  gap: 0.85em;
}
.aura-eyebrow::before {
  content: "";
  width: clamp(16px, 1.6vw, 26px);
  height: 2px;
  background: currentColor;
  opacity: 0.7;
  flex: 0 0 auto;
}
.aura-eyebrow[data-on="dark"] { color: var(--ember); }

.aura-display {
  margin: 0;
  font-family: var(--font-title);
  font-weight: 400;
  text-transform: uppercase;
  font-size: clamp(2rem, 3.62vw, 3.55rem);
  line-height: 0.95;
  letter-spacing: -0.012em;
  color: var(--ink);
}
.aura-display > span { display: block; }
.aura-display > span + span { color: var(--brand); }

.aura-heading {
  margin: 0;
  font-family: var(--font-title);
  font-weight: 400;
  text-transform: uppercase;
  font-size: clamp(1.7rem, 2.55vw, 2.6rem);
  line-height: 0.95;
  letter-spacing: -0.008em;
  color: var(--ink);
  text-wrap: balance;
}

.aura-body {
  margin: clamp(14px, 1.2vw, var(--space-body-gap)) 0 0;
  max-width: 30rem;
  font-family: var(--font-sans);
  font-size: clamp(1rem, 1.07vw, 1.12rem);
  line-height: 1.58;
  letter-spacing: 0.002em;
  color: var(--ink-body);
  text-wrap: pretty;
}
.aura-body[data-on="dark"] { color: var(--cream-soft); }

@media (max-width: 860px) {
  .aura-body { font-size: 0.98rem; line-height: 1.5; }
}

/* -------------------------------------------------------------- keycap */

@keyframes aura-sheen { 0%, 100% { opacity: 0.16; } 50% { opacity: 0.34; } }

.aura-keycap {
  --cap-r: var(--radius-cap-lg); --wall: 8px; --skirt: 3px; --press: 3px;
  min-height: var(--keycap-lg-height);
  padding: 0 clamp(26px, 2.4vw, var(--space-keycap-lg));
  font-size: clamp(1.06rem, 1.24vw, 1.34rem);
  position: relative;
  isolation: isolate;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.72em;
  text-decoration: none;
  white-space: nowrap;
  font-family: var(--font-title);
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.038em;
  color: var(--cap-label);
  background: linear-gradient(180deg, var(--cap-skirt) 0%, var(--cap-skirt-low) 100%);
  border: 0;
  border-radius: var(--cap-r);
  cursor: pointer;
  box-shadow:
    0 0 0 1px rgba(104, 30, 18, 0.5),
    0 var(--wall) 0 0 var(--cap-wall),
    0 calc(var(--wall) + 1px) 0 0 var(--cap-wall-edge),
    0 calc(var(--wall) + 7px) 12px -5px rgba(32, 7, 3, 0.62),
    0 18px 34px -12px rgba(255, 104, 82, 0.4),
    0 30px 58px -26px rgba(0, 0, 0, 0.7);
  transform: translateY(0);
  transition:
    transform 320ms cubic-bezier(0.34, 1.52, 0.64, 1),
    box-shadow 260ms cubic-bezier(0.16, 1, 0.3, 1),
    filter 220ms ease;
}
.aura-keycap[data-size="xl"] {
  --cap-r: var(--radius-cap-lg); --wall: 9px; --press: 3px;
  min-height: var(--keycap-xl-height);
  padding: 0 clamp(30px, 3vw, var(--space-keycap-xl));
  font-size: clamp(1.16rem, 1.5vw, 1.6rem);
}
.aura-keycap[data-size="md"] {
  --cap-r: var(--radius-cap-md); --wall: 7px; --press: 2.5px;
  min-height: var(--keycap-md-height);
  padding: 0 var(--space-keycap-md);
  font-size: 1.04rem;
}
.aura-keycap[data-size="sm"] {
  --cap-r: var(--radius-cap-sm); --wall: 4px; --skirt: 2px; --press: 1.5px;
  min-height: var(--keycap-sm-height);
  padding: 0 var(--space-keycap-sm);
  font-size: 0.82rem;
}
.aura-keycap[data-block] { display: flex; width: 100%; }

.aura-keycap::before {
  content: "";
  position: absolute;
  inset: 2px var(--skirt) 4px var(--skirt);
  z-index: -2;
  border-radius: calc(var(--cap-r) - var(--skirt));
  background: linear-gradient(180deg, var(--cap-face-top) 0%, var(--coral) 46%, var(--cap-face-bottom) 100%);
  box-shadow:
    inset 0 1.5px 0 rgba(255, 244, 238, 0.68),
    inset 0 -5px 9px -4px rgba(146, 42, 26, 0.38);
  pointer-events: none;
}
.aura-keycap::after {
  content: "";
  position: absolute;
  inset: 3px calc(var(--skirt) + 3px) 54% calc(var(--skirt) + 3px);
  z-index: -1;
  border-radius: calc(var(--cap-r) - var(--skirt) - 1px) calc(var(--cap-r) - var(--skirt) - 1px) 5px 5px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.66) 0%, rgba(255, 255, 255, 0) 100%);
  opacity: 0.2;
  animation: aura-sheen 5.6s ease-in-out infinite;
  pointer-events: none;
}
.aura-keycap .aura-arrow { flex: 0 0 auto; transition: transform 240ms cubic-bezier(0.16, 1, 0.3, 1); }

.aura-keycap:focus-visible { outline: 3px solid var(--focus-on-coral); outline-offset: 3px; }

/* highlighting the key pushes it DOWN into its well, never up */
.aura-keycap:hover,
.aura-keycap:focus-visible,
.aura-keycap[data-state="pressed"] {
  transform: translateY(var(--press));
  filter: saturate(1.06) brightness(1.09);
  transition:
    transform 110ms cubic-bezier(0.3, 0, 0.2, 1),
    box-shadow 140ms ease-out,
    filter 140ms ease-out;
  box-shadow:
    0 0 0 1px rgba(104, 30, 18, 0.5),
    0 calc(var(--wall) - var(--press)) 0 0 var(--cap-wall),
    0 calc(var(--wall) - var(--press) + 1px) 0 0 var(--cap-wall-edge),
    0 calc(var(--wall) - var(--press) + 5px) 9px -5px rgba(32, 7, 3, 0.66),
    0 12px 26px -10px rgba(255, 122, 96, 0.62),
    0 22px 44px -22px rgba(0, 0, 0, 0.72);
}
.aura-keycap:hover .aura-arrow,
.aura-keycap:focus-visible .aura-arrow,
.aura-keycap[data-state="pressed"] .aura-arrow { transform: translateX(4px); }

.aura-keycap:active {
  transform: translateY(calc(var(--wall) - 1px));
  filter: saturate(1.08) brightness(1.12);
  transition: transform 70ms cubic-bezier(0.3, 0, 0.2, 1), box-shadow 90ms ease-out, filter 90ms ease-out;
  box-shadow: var(--shadow-keycap-active);
}

.aura-key-legend {
  font-family: var(--font-pixel);
  font-size: 0.6em;
  letter-spacing: 0.14em;
  color: var(--cap-legend);
  transform: translateY(0.06em);
}

/* ------------------------------------------------------- quiet actions */

.aura-quiet-link {
  display: inline-flex;
  align-items: center;
  gap: 0.55em;
  text-decoration: none;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.1;
  letter-spacing: 0.012em;
  color: var(--ink-soft);
  padding: 6px 2px;
  border-bottom: 1px solid transparent;
  transition: color 200ms ease, border-color 200ms ease;
}
.aura-quiet-link .aura-arrow { flex: 0 0 auto; transition: transform 220ms cubic-bezier(0.16, 1, 0.3, 1); }
.aura-quiet-link:hover { color: var(--ink); border-color: var(--brand); }
.aura-quiet-link:hover .aura-arrow { transform: translateX(3px); }
.aura-quiet-link:focus-visible { outline: 2px solid var(--ink); outline-offset: 4px; border-color: transparent; }
.aura-quiet-link[data-on="dark"] { color: rgba(246, 236, 221, 0.82); }
.aura-quiet-link[data-on="dark"]:hover { color: var(--cream); border-color: rgba(255, 179, 103, 0.85); }
.aura-quiet-link[data-on="dark"]:focus-visible { outline-color: var(--coral); }
@media (max-width: 860px) { .aura-quiet-link { min-height: var(--space-tap); padding: 11px 2px; } }

@media (prefers-reduced-motion: reduce) {
  .aura-keycap, .aura-keycap:hover, .aura-keycap:focus-visible, .aura-keycap:active {
    transition: transform 120ms linear, box-shadow 120ms linear, filter 120ms linear;
  }
  .aura-keycap::after { animation: none; opacity: 0.22; }
}