:root {
  --ink: #05070b;
  --fog: #8b95a7;
  --mist: #c2cad8;
  --paper: #eef2f8;
  --line: rgba(238, 242, 248, 0.1);
  --line-strong: rgba(238, 242, 248, 0.22);
  --signal: #6ad4bf;
  --signal-dim: rgba(106, 212, 191, 0.28);
  --shell: rgba(12, 16, 24, 0.55);
  --danger: #e07a7a;
  --font-sans: "Sora", system-ui, sans-serif;
  --font-display: "Syne", system-ui, sans-serif;
  --mx: 0.5;
  --my: 0.5;
  --vx: 0;
  --vy: 0;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100dvh;
  font-family: var(--font-sans);
  color: var(--paper);
  background: var(--ink);
  overflow-x: hidden;
  cursor: crosshair;
}

#field {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  display: block;
}

.veil {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    radial-gradient(
      720px 520px at calc(var(--mx) * 100%) calc(var(--my) * 100%),
      rgba(106, 212, 191, 0.11),
      transparent 58%
    ),
    radial-gradient(100% 70% at 50% 110%, rgba(5, 7, 11, 0.95), transparent 52%),
    linear-gradient(
      180deg,
      rgba(5, 7, 11, 0.45) 0%,
      transparent 30%,
      rgba(5, 7, 11, 0.62) 100%
    );
}

.grain {
  position: fixed;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  opacity: 0.05;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.cursor-glow {
  position: fixed;
  z-index: 2;
  width: 28rem;
  height: 28rem;
  margin: -14rem 0 0 -14rem;
  left: calc(var(--mx) * 100%);
  top: calc(var(--my) * 100%);
  pointer-events: none;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(106, 212, 191, 0.14) 0%,
    rgba(106, 212, 191, 0.04) 35%,
    transparent 68%
  );
  transform: translate3d(calc(var(--vx) * 12px), calc(var(--vy) * 12px), 0);
  transition: opacity 0.4s ease;
  will-change: left, top, transform;
}

.top,
.stage,
.foot {
  position: relative;
  z-index: 3;
}

.top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.35rem 1.75rem;
}

.brand {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--paper);
  text-decoration: none;
  font-size: 1.05rem;
}

.admin-link {
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fog);
  text-decoration: none;
  opacity: 0.45;
  transition: opacity 0.25s ease;
  cursor: pointer;
}

.admin-link:hover {
  opacity: 1;
}

.stage {
  min-height: calc(100dvh - 6.5rem);
  display: grid;
  grid-template-rows: 1fr auto;
  gap: 2rem;
  padding: 0.75rem 1.75rem 2.25rem;
  max-width: 58rem;
}

.stage-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  will-change: transform;
  animation: rise 1.05s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.byline {
  margin: 0 0 1rem;
  font-size: 0.7rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--fog);
  animation: rise 1.05s cubic-bezier(0.22, 1, 0.36, 1) 0.08s both;
}

.logo-mark {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(4.4rem, 14vw, 8.4rem);
  line-height: 0.86;
  letter-spacing: -0.05em;
  color: var(--paper);
  will-change: transform;
  animation: rise 1.05s cubic-bezier(0.22, 1, 0.36, 1) 0.14s both;
  text-shadow: 0 0 80px rgba(106, 212, 191, 0.08);
}

.tagline {
  margin: 1.45rem 0 0;
  max-width: 27rem;
  font-size: clamp(0.98rem, 2vw, 1.12rem);
  font-weight: 300;
  line-height: 1.55;
  color: var(--mist);
  animation: rise 1.05s cubic-bezier(0.22, 1, 0.36, 1) 0.22s both;
}

.status {
  margin: 1.55rem 0 0;
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--signal);
  animation: rise 1.05s cubic-bezier(0.22, 1, 0.36, 1) 0.3s both;
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 1px;
  background: var(--signal);
  animation: ping 2.8s ease-out infinite;
}

.ask {
  width: min(100%, 36rem);
  will-change: transform;
  animation: rise 1.05s cubic-bezier(0.22, 1, 0.36, 1) 0.38s both;
}

.ask-shell {
  border: 1px solid var(--line-strong);
  background: var(--shell);
  backdrop-filter: blur(18px) saturate(1.15);
  -webkit-backdrop-filter: blur(18px) saturate(1.15);
  padding: 0.85rem 0.95rem 0.95rem;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.ask-shell:focus-within {
  border-color: rgba(106, 212, 191, 0.45);
  box-shadow: 0 0 0 1px rgba(106, 212, 191, 0.12);
}

.transcript {
  max-height: min(34vh, 15rem);
  overflow-y: auto;
  margin-bottom: 0.85rem;
  padding-right: 0.2rem;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  scrollbar-width: thin;
  scrollbar-color: var(--line-strong) transparent;
}

.transcript:not([hidden]) {
  animation: rise 0.4s ease both;
}

.turn {
  display: grid;
  gap: 0.25rem;
}

.turn.user {
  justify-items: end;
}

.turn.assistant {
  justify-items: start;
}

.turn-label {
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fog);
  opacity: 0.65;
}

.turn-text {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--paper);
  font-weight: 300;
  white-space: pre-wrap;
}

.turn.user .turn-text {
  color: var(--mist);
}

.turn.assistant .turn-text {
  border-left: 2px solid var(--signal);
  padding-left: 0.7rem;
}

.turn.pending .turn-text {
  opacity: 0.5;
  font-style: italic;
}

.prompts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 0.75rem;
  transition: opacity 0.35s ease, max-height 0.35s ease, margin 0.35s ease;
}

.prompts.is-quiet {
  opacity: 0.55;
}

.prompt {
  appearance: none;
  background: rgba(238, 242, 248, 0.04);
  border: 1px solid var(--line);
  padding: 0.38rem 0.65rem;
  color: var(--fog);
  font: inherit;
  font-size: 0.74rem;
  font-weight: 400;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.prompt:hover,
.prompt:focus-visible {
  color: var(--paper);
  border-color: var(--signal);
  background: rgba(106, 212, 191, 0.08);
  outline: none;
}

.prompt:disabled {
  opacity: 0.4;
  cursor: wait;
}

.composer {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 0.45rem;
  border: 1px solid var(--line-strong);
  background: rgba(5, 7, 11, 0.45);
  padding: 0.2rem 0.2rem 0.2rem 0.85rem;
  transition: border-color 0.25s ease;
}

.composer:focus-within {
  border-color: rgba(106, 212, 191, 0.55);
}

.composer input {
  width: 100%;
  min-width: 0;
  border: 0;
  background: transparent;
  padding: 0.7rem 0;
  font: inherit;
  font-size: 0.92rem;
  font-weight: 300;
  color: var(--paper);
  caret-color: var(--signal);
  cursor: text;
}

.composer input::placeholder {
  color: var(--fog);
  opacity: 0.65;
}

.composer input:focus {
  outline: none;
}

.composer button {
  appearance: none;
  width: 2.35rem;
  height: 2.35rem;
  display: grid;
  place-items: center;
  border: 0;
  background: var(--paper);
  color: var(--ink);
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, opacity 0.2s ease;
}

.composer button:hover:not(:disabled) {
  background: var(--signal);
  color: var(--ink);
}

.composer button:disabled {
  opacity: 0.4;
  cursor: wait;
}

.chat-error {
  margin: 0.65rem 0 0;
  color: var(--danger);
  font-size: 0.8rem;
}

.foot {
  padding: 0 1.75rem 1.4rem;
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fog);
  opacity: 0.4;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes ping {
  0% {
    box-shadow: 0 0 0 0 var(--signal-dim);
  }
  70% {
    box-shadow: 0 0 0 10px transparent;
  }
  100% {
    box-shadow: 0 0 0 0 transparent;
  }
}

@media (max-width: 640px) {
  body {
    cursor: auto;
  }

  .stage {
    padding: 0.35rem 1.15rem 1.75rem;
  }

  .ask-shell {
    padding: 0.75rem;
  }

  .prompt {
    font-size: 0.7rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .stage-copy,
  .ask,
  .logo-mark,
  .cursor-glow {
    will-change: auto;
    transform: none !important;
  }
}