:root {
  --bg-1: #fff6e9;
  --bg-2: #ffe3c9;
  --card: rgba(255, 255, 255, 0.8);
  --text: #1b1a1a;
  --accent: #ff6f3c;
  --accent-2: #009f9d;
  --line: rgba(27, 26, 26, 0.12);
  --shadow: 0 20px 55px rgba(0, 0, 0, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Rubik", sans-serif;
  color: var(--text);
  background: linear-gradient(140deg, var(--bg-1), var(--bg-2));
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

.bg-shape {
  position: fixed;
  border-radius: 999px;
  filter: blur(2px);
  z-index: 0;
  opacity: 0.7;
  pointer-events: none;
}

.bg-shape-1 {
  width: 300px;
  height: 300px;
  background: radial-gradient(circle at 30% 30%, #ffd166, #ff7d4d);
  top: -80px;
  right: -80px;
  animation: float1 7s ease-in-out infinite;
}

.bg-shape-2 {
  width: 250px;
  height: 250px;
  background: radial-gradient(circle at 30% 30%, #90f1ef, #3aa9a6);
  bottom: -70px;
  left: -70px;
  animation: float2 9s ease-in-out infinite;
}

.app {
  position: relative;
  z-index: 1;
  max-width: 980px;
  margin: 0 auto;
  padding: 32px 16px 48px;
}

.hero {
  text-align: center;
  animation: fadeUp 0.8s ease-out both;
}

.tag {
  font-family: "Unbounded", sans-serif;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-size: 12px;
  margin-bottom: 10px;
  color: var(--accent-2);
}

h1 {
  font-family: "Unbounded", sans-serif;
  margin: 0 0 10px;
  font-size: clamp(28px, 4.5vw, 46px);
}

.subtitle {
  margin: 0 auto;
  max-width: 700px;
  font-size: 16px;
}

.panel,
.result-wrap {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 20px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(8px);
}

.panel {
  margin-top: 24px;
  padding: 18px;
  display: grid;
  gap: 14px;
  animation: fadeUp 1s ease-out both;
}

label {
  display: grid;
  gap: 6px;
  font-weight: 600;
}

input,
select,
button {
  font-family: inherit;
  font-size: 15px;
}

input,
select {
  width: 100%;
  border-radius: 12px;
  border: 1px solid var(--line);
  padding: 12px;
  background: #fff;
}

button {
  border: 0;
  border-radius: 12px;
  background: linear-gradient(90deg, var(--accent), #ff9a3c);
  color: #fff;
  font-weight: 700;
  padding: 12px 14px;
  cursor: pointer;
  transition: transform 0.2s ease, filter 0.2s ease;
}

button:hover {
  transform: translateY(-1px);
  filter: brightness(1.04);
}

button:disabled {
  opacity: 0.6;
  cursor: progress;
}

.hint {
  margin: 0;
  font-size: 13px;
  color: #5d5b58;
}

.result-wrap {
  margin-top: 18px;
  padding: 16px;
  animation: fadeUp 1.2s ease-out both;
}

h2 {
  margin: 0 0 8px;
  font-family: "Unbounded", sans-serif;
  font-size: 20px;
}

pre {
  margin: 0;
  white-space: pre-wrap;
  line-height: 1.4;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px;
  min-height: 150px;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes float1 {
  0%,
  100% {
    transform: translateY(0) translateX(0);
  }
  50% {
    transform: translateY(14px) translateX(-8px);
  }
}

@keyframes float2 {
  0%,
  100% {
    transform: translateY(0) translateX(0);
  }
  50% {
    transform: translateY(-12px) translateX(10px);
  }
}

@media (max-width: 640px) {
  .app {
    padding-top: 20px;
  }

  .panel,
  .result-wrap {
    border-radius: 16px;
  }
}