:root {
  --bg-0: #0b0a16;
  --bg-1: #101528;
  --panel: rgba(28, 22, 42, 0.78);
  --panel-border: rgba(84, 221, 158, 0.35);
  --text-main: #87ffbc;
  --text-dim: #b2f6d3;
  --accent: #65f5a7;
  --shadow: 0 24px 48px rgba(0, 0, 0, 0.45);
}

* {
  box-sizing: border-box;
}

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

body {
  font-family: "JetBrains Mono", monospace;
  color: var(--text-main);
  background:
    radial-gradient(1000px 460px at 82% 28%, rgba(86, 250, 173, 0.2), transparent 56%),
    linear-gradient(160deg, #06060e 0%, #0a0c1e 38%, #080714 100%);
  overflow-x: hidden;
}

.ambient {
  position: fixed;
  inset: auto;
  border-radius: 50%;
  pointer-events: none;
}

.ambient-a {
  width: 540px;
  height: 540px;
  left: -180px;
  bottom: -160px;
  background: radial-gradient(circle, rgba(255, 171, 120, 0.14) 0%, rgba(255, 171, 120, 0) 68%);
}

.ambient-b {
  width: 700px;
  height: 700px;
  right: -280px;
  top: -120px;
  background: radial-gradient(circle, rgba(113, 243, 185, 0.17) 0%, rgba(113, 243, 185, 0) 64%);
}

.app-shell {
  width: min(980px, calc(100vw - 2rem));
  margin: 7vh auto;
  display: grid;
  gap: 1.15rem;
}

.hero-card,
.panel,
.preview-card {
  background: var(--panel);
  border: 1px solid rgba(84, 221, 158, 0.2);
  box-shadow: var(--shadow);
  border-radius: 16px;
  backdrop-filter: blur(3px);
}

.hero-card {
  padding: 1.4rem 1.4rem 1.1rem;
}

.intro-kicker {
  margin: 0;
  color: #ffd38f;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
}

.hero-card h1 {
  margin: 0.35rem 0 0;
  font-size: clamp(1.55rem, 3.6vw, 2.25rem);
  font-weight: 800;
  letter-spacing: 0.04em;
}

.status {
  margin: 0.8rem 0 0;
  padding-top: 0.8rem;
  color: #ffd38f;
  border-top: 2px solid rgba(115, 255, 187, 0.8);
}

.desc {
  margin: 0.65rem 0 0;
  color: var(--text-dim);
}

.panel {
  padding: 1rem;
}

.field-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.85rem;
}

.field {
  display: grid;
  gap: 0.45rem;
}

.field span {
  font-size: 0.9rem;
  color: var(--text-dim);
}

input,
select,
button {
  font: inherit;
}

input[type="text"],
select,
input[type="range"] {
  width: 100%;
  background: rgba(15, 23, 32, 0.7);
  color: #d8ffe8;
  border: 1px solid rgba(102, 235, 171, 0.5);
  border-radius: 10px;
  padding: 0.62rem 0.72rem;
}

input[type="color"] {
  width: 100%;
  height: 42px;
  background: rgba(15, 23, 32, 0.7);
  border: 1px solid rgba(102, 235, 171, 0.5);
  border-radius: 10px;
  padding: 0.25rem;
}

input[type="range"] {
  padding: 0.42rem 0.38rem;
}

.actions {
  margin-top: 0.95rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.66rem;
}

.btn {
  border: 1px solid rgba(105, 243, 178, 0.35);
  border-radius: 10px;
  background: rgba(13, 18, 30, 0.8);
  color: #d5ffe6;
  text-decoration: none;
  padding: 0.55rem 0.9rem;
  cursor: pointer;
  transition: transform 160ms ease, border-color 160ms ease, background-color 160ms ease;
}

.btn:hover {
  transform: translateY(-1px);
  border-color: rgba(105, 243, 178, 0.8);
  background: rgba(20, 31, 40, 0.9);
}

.btn-primary {
  background: linear-gradient(135deg, rgba(61, 199, 132, 0.9), rgba(35, 176, 132, 0.85));
  color: #052012;
  font-weight: 700;
}

.ghost {
  margin-left: auto;
}

.preview-card {
  padding: 1rem;
}

.preview-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
}

.preview-head h2 {
  margin: 0;
  font-size: 1.02rem;
}

.preview-head small {
  color: #a5e9c7;
}

.preview-stage {
  margin-top: 0.8rem;
  min-height: 210px;
  border: 1px dashed rgba(111, 240, 180, 0.35);
  border-radius: 12px;
  display: grid;
  place-items: center;
  padding: 1rem;
  background: transparent;
}

#previewImage {
  max-width: 100%;
  height: auto;
  filter: drop-shadow(0 10px 28px rgba(0, 0, 0, 0.5));
}

@media (max-width: 760px) {
  .app-shell {
    margin-top: 1.4rem;
    margin-bottom: 1.4rem;
  }

  .field-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  #leftTextField {
    grid-column: span 2;
  }

  #rightTextField {
    grid-column: span 2;
  }

  .ghost {
    margin-left: 0;
  }

  .preview-head {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 520px) {
  .field-grid {
    grid-template-columns: 1fr;
  }

  #leftTextField,
  #rightTextField {
    grid-column: span 1;
  }
}