@import url("https://fonts.googleapis.com/css2?family=Unbounded:wght@400;600;800&family=IBM+Plex+Sans:wght@300;400;600&display=swap");

:root {
  --bg: #f5efe6;
  --bg-2: #e9dcc4;
  --ink: #1f1f1b;
  --muted: #6e6a61;
  --accent: #ef6f4a;
  --accent-2: #2a9d8f;
  --card: #fff8ef;
  --stroke: #1f1f1b;
  --shadow: 0 12px 30px rgba(31, 31, 27, 0.15);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "IBM Plex Sans", sans-serif;
  color: var(--ink);
  background: var(--bg);
}

.bg {
  position: fixed;
  inset: 0;
  background:
    radial-gradient(circle at 10% 20%, rgba(239, 111, 74, 0.18), transparent 40%),
    radial-gradient(circle at 80% 10%, rgba(42, 157, 143, 0.2), transparent 35%),
    linear-gradient(140deg, var(--bg), var(--bg-2));
  z-index: -1;
}

.app {
  padding: 24px 18px 40px;
  max-width: 520px;
  margin: 0 auto;
}

.top .title {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-family: "Unbounded", sans-serif;
  font-size: 16px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.top strong {
  font-size: 32px;
  letter-spacing: 0.02em;
}

.subtitle {
  color: var(--muted);
  font-size: 13px;
  margin-top: 8px;
}

.menu {
  margin-top: 24px;
  display: grid;
  gap: 14px;
}

.card {
  text-align: left;
  border: 2px solid var(--stroke);
  background: var(--card);
  padding: 16px 18px;
  border-radius: 18px;
  box-shadow: var(--shadow);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.card-title {
  font-family: "Unbounded", sans-serif;
  font-weight: 600;
  font-size: 18px;
}

.card-sub {
  display: block;
  color: var(--muted);
  font-size: 13px;
  margin-top: 4px;
}

.card:active {
  transform: translateY(2px);
  box-shadow: none;
}

.panel {
  margin-top: 20px;
  padding: 18px;
  border: 2px solid var(--stroke);
  border-radius: 18px;
  background: var(--card);
  box-shadow: var(--shadow);
  animation: rise 0.25s ease;
}

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

.form {
  display: grid;
  gap: 10px;
  margin-top: 12px;
}

input {
  padding: 12px 14px;
  border-radius: 12px;
  border: 1.5px solid var(--stroke);
  font-size: 14px;
  background: #fff;
}

button {
  border: none;
  padding: 12px 16px;
  border-radius: 12px;
  font-size: 14px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  font-family: "IBM Plex Sans", sans-serif;
  cursor: pointer;
  transition: transform 0.15s ease, filter 0.15s ease;
}

button:active {
  transform: translateY(1px);
  filter: brightness(0.95);
}

.quick {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-top: 12px;
}

.quick button {
  background: var(--accent-2);
}

.result {
  margin-top: 12px;
  color: var(--muted);
  font-size: 14px;
  min-height: 18px;
}

.back {
  margin-top: 16px;
  background: transparent;
  color: var(--ink);
  border: 2px dashed var(--ink);
}

.hidden {
  display: none;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}