:root {
  color-scheme: dark;
  --bg: #060507;
  --bg-2: #0d0a12;
  --panel: #12101a;
  --panel-2: #15111f;
  --line: #3c3452;
  --line-soft: #2a243a;
  --text: #f4f1ff;
  --muted: #a79fbc;
  --key: #1a1626;
  --key-hover: #221c32;
  --op: #1e1930;
  --accent: #e9ddff;
  --equal-bg: #f0e8ff;
  --equal-text: #191327;
  --shadow: 0 30px 90px rgba(0, 0, 0, 0.6);
}

:root[data-theme='light'] {
  color-scheme: light;
  --bg: #f0ebff;
  --bg-2: #f8f4ff;
  --panel: #fffafe;
  --panel-2: #f6f0ff;
  --line: #ddd1f6;
  --line-soft: #e7dcfb;
  --text: #1f1a2c;
  --muted: #6f6687;
  --key: #f8f2ff;
  --key-hover: #f1e8ff;
  --op: #efe5ff;
  --accent: #39295f;
  --equal-bg: #2c1f46;
  --equal-text: #f8f2ff;
  --shadow: 0 24px 60px rgba(52, 32, 89, 0.18);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: 'Inter', 'SF Pro Text', 'Helvetica Neue', Arial, sans-serif;
  background:
    radial-gradient(circle at 50% -10%, rgba(182, 140, 255, 0.18), transparent 48%),
    radial-gradient(circle at 15% 85%, rgba(164, 89, 255, 0.1), transparent 40%),
    linear-gradient(160deg, var(--bg), var(--bg-2));
  color: var(--text);
}

.app-wrap {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 1rem;
}

.calculator {
  position: relative;
  width: min(96vw, 430px);
  background: linear-gradient(168deg, var(--panel), var(--panel-2));
  border: 1px solid var(--line);
  border-radius: 28px;
  padding: 1.1rem;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.calculator > *:not(.fx-canvas):not(.rune-layer):not(.sigil) {
  position: relative;
  z-index: 2;
}

.sigil {
  position: absolute;
  top: -72px;
  right: -72px;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  border: 1px solid color-mix(in oklab, var(--line), transparent 40%);
  box-shadow: inset 0 0 60px rgba(255, 255, 255, 0.04);
  opacity: 0.55;
  pointer-events: none;
}

.fx-canvas,
.rune-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.fx-canvas {
  z-index: 0;
  mix-blend-mode: screen;
}

.rune-layer {
  z-index: 1;
}

.rune {
  position: absolute;
  color: hsl(var(--hue) 92% 80% / 0.75);
  font-size: 1rem;
  text-shadow: 0 0 10px hsl(var(--hue) 92% 72% / 0.45);
  animation: runeFloat var(--dur, 2s) ease-out forwards;
}

.brand {
  position: relative;
  z-index: 2;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.2rem 0.2rem 0.75rem;
}

.controls {
  display: flex;
  gap: 0.45rem;
}

.eyebrow {
  margin: 0 0 0.2rem;
  font-size: 0.62rem;
  letter-spacing: 0.19em;
  text-transform: uppercase;
  color: var(--muted);
}

.brand h1 {
  margin: 0;
  font-size: 0.98rem;
  font-weight: 600;
  letter-spacing: 0.17em;
  text-transform: uppercase;
}

.icon-btn,
.ghost-btn {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--key);
  color: var(--text);
  cursor: pointer;
  transition: background 140ms ease, transform 120ms ease, border-color 140ms ease;
}

.icon-btn {
  width: 2rem;
  height: 2rem;
  font-size: 0.84rem;
}

.ghost-btn {
  height: 1.8rem;
  padding: 0 0.7rem;
  font-size: 0.76rem;
}

.icon-btn:hover,
.ghost-btn:hover {
  background: var(--key-hover);
  border-color: color-mix(in oklab, var(--line), white 18%);
}

.icon-btn:active,
.ghost-btn:active {
  transform: scale(0.96);
}

.display-wrap {
  margin: 0 0 0.95rem;
  padding: 1rem;
  border-radius: 18px;
  background: color-mix(in oklab, var(--panel-2), black 9%);
  border: 1px solid var(--line-soft);
  min-height: 108px;
  display: grid;
  align-content: end;
  gap: 0.3rem;
  overflow: hidden;
}

.history {
  margin: 0;
  min-height: 1.1rem;
  color: var(--muted);
  font-size: 0.86rem;
  text-align: right;
}

.display {
  margin: 0;
  display: block;
  text-align: right;
  font-size: clamp(2rem, 8vw, 2.9rem);
  font-weight: 500;
  letter-spacing: 0.01em;
  line-height: 1.1;
  overflow-wrap: anywhere;
}

.oracle-utterance {
  margin: 0.12rem 0 0;
  min-height: 1.1rem;
  text-align: right;
  font-size: 0.74rem;
  color: color-mix(in oklab, var(--text), var(--muted) 45%);
  opacity: 0;
  transform: translateY(5px);
}

.oracle-utterance.live {
  animation: utteranceIn 1900ms ease;
}

.keys {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.55rem;
}

.key {
  border: 1px solid var(--line);
  border-radius: 14px;
  min-height: 3.45rem;
  font-size: 1.02rem;
  font-weight: 500;
  color: var(--text);
  background: var(--key);
  cursor: pointer;
  transition: background 140ms ease, transform 100ms ease, border-color 180ms ease;
}

.key:hover {
  background: var(--key-hover);
  border-color: color-mix(in oklab, var(--line), white 14%);
}

.key:active,
.key.pop {
  transform: scale(0.97);
}

.key:focus-visible,
.tape-entry:focus-visible,
.icon-btn:focus-visible,
.ghost-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.key.op {
  background: var(--op);
}

.key.equal {
  grid-column: span 2;
  background: var(--equal-bg);
  color: var(--equal-text);
  border-color: color-mix(in oklab, var(--equal-bg), black 22%);
}

.key.zero {
  grid-column: span 2;
}

.panel {
  margin-top: 0.75rem;
  border-radius: 14px;
  border: 1px solid var(--line-soft);
  background: color-mix(in oklab, var(--panel-2), black 9%);
  padding: 0.72rem;
}

.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.panel-head h2 {
  margin: 0;
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--muted);
  text-transform: uppercase;
}

.fx-controls {
  display: grid;
  gap: 0.55rem;
}

.range-row {
  display: grid;
  gap: 0.35rem;
  font-size: 0.76rem;
  color: var(--muted);
}

.range-row input {
  width: 100%;
}

.oracle-stack {
  display: grid;
  gap: 0.45rem;
}

.oracle-line {
  margin: 0;
  font-size: 0.84rem;
  line-height: 1.35;
  color: var(--text);
}

.oracle-line.whisper {
  color: color-mix(in oklab, var(--text), var(--muted) 40%);
  font-style: italic;
}

.tape-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.45rem;
  max-height: 150px;
  overflow: auto;
}

.tape-entry {
  width: 100%;
  border: 1px solid var(--line);
  background: var(--key);
  color: var(--text);
  border-radius: 10px;
  text-align: left;
  padding: 0.45rem 0.55rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  font-size: 0.82rem;
}

.tape-entry strong {
  font-weight: 600;
}

.tape-empty {
  color: var(--muted);
  font-size: 0.82rem;
}

.shake {
  animation: shake 280ms ease;
}

.pulse {
  animation: spatialPulse 420ms ease;
}

.calculator[data-mood='urgent'] {
  box-shadow: 0 32px 95px rgba(0, 0, 0, 0.62), 0 0 0 1px rgba(219, 172, 255, 0.2);
}

.calculator[data-mood='fragile'] {
  border-color: color-mix(in oklab, var(--line), #ff9fb8 22%);
}

.calculator[data-mood='ritual'] {
  border-color: color-mix(in oklab, var(--line), #b8a3ff 34%);
}

@keyframes shake {
  0%,
  100% { transform: translateX(0); }
  20% { transform: translateX(-5px); }
  40% { transform: translateX(5px); }
  60% { transform: translateX(-4px); }
  80% { transform: translateX(4px); }
}

@keyframes runeFloat {
  0% { transform: translateY(6px) scale(0.9); opacity: 0; }
  20% { opacity: 1; }
  100% { transform: translateY(-34px) scale(1.2); opacity: 0; }
}

@keyframes utteranceIn {
  0% { opacity: 0; transform: translateY(5px); }
  15% { opacity: 0.9; transform: translateY(0); }
  85% { opacity: 0.85; }
  100% { opacity: 0; transform: translateY(-4px); }
}

@keyframes spatialPulse {
  0% { transform: scale(1); }
  40% { transform: scale(1.012); }
  100% { transform: scale(1); }
}

@media (max-width: 460px) {
  .calculator {
    padding: 0.85rem;
    border-radius: 22px;
  }

  .display-wrap {
    min-height: 96px;
    padding: 0.9rem;
  }

  .key {
    min-height: 3.1rem;
    border-radius: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition-duration: 0ms !important;
  }
}