:root {
  --bg-0: #0a0a14;
  --bg-1: #0f1628;
  --panel: rgba(26, 22, 39, 0.88);
  --panel-border: rgba(125, 163, 234, 0.22);
  --text: #8fffc6;
  --muted: #67c8a6;
  --accent: #7fffc4;
  --accent-2: #f0b06a;
  --shadow: rgba(6, 10, 26, 0.62);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "JetBrains Mono", monospace;
  background:
    radial-gradient(circle at 16% 76%, rgba(238, 169, 98, 0.12) 0%, transparent 30%),
    radial-gradient(circle at 86% 18%, rgba(115, 255, 196, 0.1) 0%, transparent 34%),
    linear-gradient(90deg, rgba(16, 19, 37, 0.95) 0%, rgba(10, 10, 20, 0.98) 52%, rgba(14, 29, 36, 0.9) 100%),
    linear-gradient(135deg, var(--bg-1) 0%, var(--bg-0) 62%, #090910 100%);
  color: var(--text);
  display: grid;
  place-items: center;
  padding: 18px;
  overflow-x: hidden;
}

.ambient {
  position: fixed;
  z-index: -1;
  filter: blur(36px);
  opacity: 0.38;
  pointer-events: none;
  animation: float 10s ease-in-out infinite;
}

.ambient-a {
  width: 360px;
  height: 360px;
  left: -110px;
  top: -80px;
  background: #7fffc4;
}

.ambient-b {
  width: 300px;
  height: 300px;
  right: -80px;
  bottom: 4%;
  background: #e5a56b;
  animation-delay: -5s;
}

.app {
  width: min(1120px, 100%);
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 14px;
}

.panel {
  background: var(--panel);
  backdrop-filter: blur(9px);
  border: 1px solid var(--panel-border);
  border-radius: 16px;
  box-shadow: 0 18px 36px var(--shadow), inset 0 1px 0 rgba(144, 188, 255, 0.08);
  padding: 16px;
}

.controls h1 {
  margin: 0;
  font-size: 1.42rem;
  color: var(--accent);
  text-shadow: 0 0 14px rgba(127, 255, 196, 0.28);
}

.subtitle {
  margin: 8px 0 12px;
  color: var(--accent-2);
  font-size: 0.9rem;
}

label {
  display: block;
  margin: 10px 0 5px;
  font-weight: 700;
  font-size: 0.86rem;
}

textarea,
input[type="range"],
input[type="color"] {
  width: 100%;
}

textarea {
  resize: vertical;
  min-height: 54px;
  border: 1px solid rgba(127, 255, 196, 0.45);
  border-radius: 10px;
  padding: 9px 11px;
  background: rgba(13, 19, 31, 0.78);
  color: var(--text);
  font: inherit;
  caret-color: var(--accent);
}

textarea:focus,
input:focus {
  outline: 1px solid var(--accent);
  box-shadow: 0 0 0 2px rgba(127, 255, 196, 0.16);
}

.control-group {
  margin-top: 4px;
}

input[type="range"] {
  accent-color: #8ef8ca;
}

input[type="color"] {
  height: 38px;
  border: 1px solid rgba(127, 255, 196, 0.34);
  border-radius: 10px;
  padding: 3px;
  background: rgba(13, 19, 31, 0.78);
}

.grid-two {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 12px;
}

.actions .wide {
  grid-column: 1 / -1;
}

button {
  width: 100%;
  border: 1px solid rgba(127, 255, 196, 0.58);
  border-radius: 12px;
  padding: 10px 12px;
  background: rgba(127, 255, 196, 0.06);
  color: var(--accent);
  font: inherit;
  font-weight: 700;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: transform 0.16s ease, background 0.16s ease, box-shadow 0.16s ease;
}

button:hover {
  background: rgba(127, 255, 196, 0.13);
  box-shadow: 0 0 14px rgba(127, 255, 196, 0.2);
  transform: translateY(-1px);
}

button#downloadBtn {
  background: rgba(240, 176, 106, 0.12);
  border-color: var(--accent-2);
  color: var(--accent-2);
}

button#downloadBtn:hover {
  background: rgba(240, 176, 106, 0.2);
  box-shadow: 0 0 14px rgba(240, 176, 106, 0.24);
}

button.secondary {
  border-color: rgba(118, 147, 198, 0.4);
  color: #9cb2dd;
}

button.secondary:hover {
  background: rgba(118, 147, 198, 0.14);
}

.preview h2 {
  margin: 0 0 10px;
  font-size: 1rem;
  color: #9beac4;
}

.canvas-wrap {
  border-radius: 12px;
  overflow: hidden;
  background: #0a0f1c;
  border: 1px solid rgba(127, 255, 196, 0.32);
}

#posterImage {
  display: block;
  width: 100%;
  height: auto;
}

#posterCanvas {
  display: none;
}

.hint {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 0.82rem;
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0) scale(1);
  }
  50% {
    transform: translateY(-16px) scale(1.04);
  }
}

@media (max-width: 980px) {
  .app {
    grid-template-columns: 1fr;
  }

  .controls {
    order: 2;
  }

  .preview {
    order: 1;
  }
}

@media (max-width: 560px) {
  body {
    padding: 10px;
  }

  .panel {
    padding: 12px;
    border-radius: 14px;
  }

  .controls h1 {
    font-size: 1.12rem;
  }

  .subtitle {
    font-size: 0.8rem;
    margin-bottom: 10px;
  }

  label {
    margin-top: 8px;
    font-size: 0.8rem;
  }

  textarea {
    min-height: 48px;
    padding: 8px 10px;
    font-size: 0.88rem;
  }

  .grid-two,
  .actions {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  button {
    padding: 9px 10px;
    font-size: 0.88rem;
  }
}