:root {
  --ink: #14201c;
  --ink-soft: #2a3a34;
  --mist: #e8efe9;
  --paper: #f3f7f4;
  --teal: #0f7a6c;
  --teal-deep: #0a5248;
  --copper: #c46b3a;
  --line: rgba(20, 32, 28, 0.12);
  --glow: rgba(15, 122, 108, 0.28);
  --font-display: "Fraunces", Georgia, serif;
  --font-body: "Manrope", system-ui, sans-serif;
  --radius: 18px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--mist);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

.atmosphere {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(1200px 700px at 12% -10%, rgba(196, 107, 58, 0.18), transparent 55%),
    radial-gradient(900px 600px at 88% 8%, rgba(15, 122, 108, 0.16), transparent 50%),
    linear-gradient(165deg, #eef4f0 0%, #dfeae3 42%, #f6f3ee 100%);
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(48px);
  opacity: 0.55;
  animation: drift 18s var(--ease) infinite alternate;
}

.orb-a {
  width: min(48vw, 420px);
  height: min(48vw, 420px);
  left: -8%;
  top: 18%;
  background: rgba(15, 122, 108, 0.35);
}

.orb-b {
  width: min(40vw, 360px);
  height: min(40vw, 360px);
  right: -6%;
  bottom: 8%;
  background: rgba(196, 107, 58, 0.28);
  animation-delay: -6s;
  animation-duration: 22s;
}

.grain {
  position: absolute;
  inset: 0;
  opacity: 0.35;
  mix-blend-mode: multiply;
  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='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.55'/%3E%3C/svg%3E");
}

@keyframes drift {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to { transform: translate3d(4%, -3%, 0) scale(1.08); }
}

.stage {
  position: relative;
  z-index: 1;
  min-height: 100svh;
  display: grid;
  align-content: center;
  gap: clamp(1.5rem, 4vw, 2.75rem);
  width: min(920px, calc(100% - 2.5rem));
  margin: 0 auto;
  padding: clamp(2rem, 6vh, 4rem) 0;
}

.brand-block {
  text-align: left;
  animation: rise 0.9s var(--ease) both;
}

.brand {
  margin: 0 0 0.35rem;
  font-family: var(--font-display);
  font-size: clamp(3.4rem, 11vw, 6.5rem);
  font-weight: 700;
  line-height: 0.92;
  letter-spacing: -0.04em;
  color: var(--ink);
  background: linear-gradient(120deg, var(--ink) 30%, var(--teal) 70%, var(--copper) 120%);
  background-size: 200% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: brandShimmer 8s ease-in-out infinite alternate, rise 0.9s var(--ease) both;
}

.headline {
  margin: 0.15rem 0 0.55rem;
  font-family: var(--font-display);
  font-size: clamp(1.55rem, 3.6vw, 2.15rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--ink-soft);
}

.lede {
  margin: 0;
  max-width: 34rem;
  font-size: 1.05rem;
  line-height: 1.55;
  color: rgba(20, 32, 28, 0.72);
}

.composer {
  display: grid;
  gap: 1rem;
  animation: rise 1s var(--ease) 0.12s both;
}

.wave-wrap {
  height: clamp(88px, 14vw, 140px);
  border-radius: var(--radius);
  overflow: hidden;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.55), rgba(255, 255, 255, 0.22));
  border: 1px solid var(--line);
  backdrop-filter: blur(10px);
}

#wave {
  display: block;
  width: 100%;
  height: 100%;
}

textarea {
  width: 100%;
  resize: vertical;
  min-height: 140px;
  padding: 1.15rem 1.25rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(12px);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1.08rem;
  line-height: 1.55;
  outline: none;
  transition: border-color 0.25s var(--ease), box-shadow 0.25s var(--ease), transform 0.35s var(--ease);
}

textarea::placeholder {
  color: rgba(20, 32, 28, 0.38);
}

textarea:focus,
#instruct:focus {
  border-color: rgba(15, 122, 108, 0.45);
  box-shadow: 0 0 0 4px var(--glow);
}

#instruct {
  width: 100%;
  height: 48px;
  padding: 0 1.1rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(12px);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 0.98rem;
  outline: none;
  transition: border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

#instruct[hidden] {
  display: none;
}

#instruct::placeholder {
  color: rgba(20, 32, 28, 0.38);
}

.controls {
  display: grid;
  grid-template-columns: 1.2fr 1fr auto;
  gap: 0.85rem;
  align-items: end;
}

.field {
  display: grid;
  gap: 0.35rem;
}

.field label {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: rgba(20, 32, 28, 0.55);
}

select {
  width: 100%;
  appearance: none;
  height: 48px;
  padding: 0 2.4rem 0 0.95rem;
  border-radius: 12px;
  border: 1px solid var(--line);
  background:
    linear-gradient(45deg, transparent 50%, var(--ink-soft) 50%) calc(100% - 18px) / 6px 6px no-repeat,
    linear-gradient(135deg, transparent 50%, var(--ink-soft) 50%) calc(100% - 12px) / 6px 6px no-repeat,
    rgba(255, 255, 255, 0.78);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 0.98rem;
  font-weight: 500;
  outline: none;
}

select:focus {
  border-color: rgba(15, 122, 108, 0.45);
  box-shadow: 0 0 0 4px var(--glow);
}

input[type="range"] {
  width: 100%;
  height: 48px;
  accent-color: var(--teal);
}

.speak-btn {
  position: relative;
  isolation: isolate;
  height: 48px;
  min-width: 132px;
  padding: 0 1.4rem;
  border: 0;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--teal) 0%, var(--teal-deep) 100%);
  color: #f7fffc;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  cursor: pointer;
  overflow: hidden;
  transition: transform 0.25s var(--ease), filter 0.25s var(--ease), opacity 0.25s;
}

.speak-btn:hover:not(:disabled) {
  transform: translateY(-1px);
  filter: brightness(1.05);
}

.speak-btn:active:not(:disabled) {
  transform: translateY(1px) scale(0.98);
}

.speak-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.speak-btn.is-busy .btn-label {
  opacity: 0.85;
}

.speak-btn.is-busy .btn-pulse {
  opacity: 1;
  animation: pulse 1.1s ease-in-out infinite;
}

.btn-pulse {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 0.28), transparent 60%);
  opacity: 0;
  pointer-events: none;
}

.meta {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin: 0;
  font-size: 0.86rem;
  color: rgba(20, 32, 28, 0.55);
}

.meta #status.is-ready {
  color: var(--teal-deep);
}

.meta #status.is-error {
  color: #9b2c2c;
}

.meta #status.is-speaking {
  color: var(--copper);
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes brandShimmer {
  from { background-position: 0% 50%; }
  to { background-position: 100% 50%; }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 0.35; }
  50% { transform: scale(1.35); opacity: 0.7; }
}

@media (max-width: 720px) {
  .controls {
    grid-template-columns: 1fr;
  }

  .speak-btn {
    width: 100%;
  }

  .brand {
    font-size: clamp(3rem, 16vw, 4.5rem);
  }
}

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