:root {
  --bg: #050b18;
  --accent: #00d2ff;
  --accent-2: #92fe9d;
  --white: #ffffff;
  --glass: rgba(255, 255, 255, 0.07);
  --glass-border: rgba(255, 255, 255, 0.12);
  font-family:
    "Inter",
    system-ui,
    -apple-system,
    "Segoe UI",
    Roboto,
    Arial;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 28px;
  /* Animated Mesh Background */
  background-image:
    radial-gradient(at 0% 0%, hsla(203, 83%, 15%, 1) 0, transparent 50%),
    radial-gradient(at 50% 0%, hsla(225, 80%, 12%, 1) 0, transparent 50%),
    radial-gradient(at 100% 0%, hsla(180, 70%, 20%, 1) 0, transparent 50%);
  background-attachment: fixed;
  overflow-x: hidden;
}

/* Floating Animation */
@keyframes float {
  0% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-15px);
  }
  100% {
    transform: translateY(0px);
  }
}

.card {
  width: min(920px, 96%);
  background: var(--glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-radius: 24px;
  padding: 28px;
  border: 1px solid var(--glass-border);
  box-shadow:
    0 20px 50px rgba(0, 0, 0, 0.4),
    inset 0 0 20px rgba(255, 255, 255, 0.05);
  animation: float 6s ease-in-out infinite;
}

header {
  display: flex;
  gap: 16px;
  align-items: center;
}

.logo {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: var(--white);
  box-shadow: 0 4px 15px rgba(0, 210, 255, 0.3);
}

h1 {
  margin: 0;
  font-size: 22px;
  font-weight: 800;
  background: linear-gradient(to right, #fff, var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.lead {
  margin: 6px 0 16px;
  color: var(--accent-2);
  font-size: 15px;
}

.panel {
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.field {
  display: flex;
  flex-direction: column;
}

.label {
  font-size: 14px;
  color: var(--accent);
  margin-bottom: 6px;
}

textarea {
  min-height: 100px;
  padding: 14px;
  border-radius: 12px;
  border: 1px solid var(--glass-border);
  background: rgba(255, 255, 255, 0.05);
  color: var(--white);
  outline: none;
  resize: vertical;
}

.row.controls {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  align-items: center;
}

.small {
  font-size: 14px;
  color: var(--accent-2);
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 160px;
}

input[type="range"] {
  width: 160px;
  accent-color: var(--accent);
}

.actions {
  display: flex;
  gap: 12px;
  align-items: center;
}

.btn {
  padding: 12px 20px;
  border-radius: 50px;
  border: none;
  background: linear-gradient(45deg, var(--accent), var(--accent-2));
  color: var(--white);
  font-weight: 700;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 1px;
  box-shadow: 0 4px 15px rgba(0, 210, 255, 0.3);
  transition: 0.3s;
}

.btn:hover {
  transform: scale(1.05);
  box-shadow: 0 6px 20px rgba(0, 210, 255, 0.5);
}

.btn.secondary {
  background: transparent;
  border: 1px solid var(--glass-border);
  color: var(--accent-2);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.muted {
  color: var(--accent-2);
  font-size: 13px;
}

.small-note {
  font-size: 12px;
  color: var(--accent-2);
}

/* Responsive */
@media (max-width: 600px) {
  .card {
    padding: 20px;
  }
  h1 {
    font-size: 18px;
  }
  .logo {
    width: 40px;
    height: 40px;
  }
}