@import url('https://fonts.googleapis.com/css2?family=Baloo+2:wght@500;700;800&family=Nunito:wght@500;700;800&display=swap');

:root {
  --sky: #38bdf8;
  --sky-deep: #0ea5e9;
  --sky-light: #bae6fd;
  --sea: #0284c7;
  --sea-deep: #075985;
  --sand: #fde68a;
  --sand-deep: #f59e0b;
  --grass: #22c55e;
  --grass-deep: #15803d;
  --coral: #ff4d4f;
  --coral-deep: #c81e3a;
  --sun: #ffd23f;
  --ink: #0f2b46;
  --ink-soft: #3b5873;
  --card: #ffffff;
  --radius: 18px;
  --shadow: 0 6px 0 rgba(15, 43, 70, 0.18);
  --font-display: 'Baloo 2', 'Nunito', system-ui, sans-serif;
  --font-body: 'Nunito', system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html,
body {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-body);
  font-weight: 600;
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  font-weight: 800;
  margin: 0;
  line-height: 1.1;
}

.btn {
  appearance: none;
  border: 0;
  border-radius: 999px;
  padding: 0.7em 1.4em;
  font: 800 1rem var(--font-display);
  color: #fff;
  background: var(--coral);
  box-shadow: 0 5px 0 var(--coral-deep);
  cursor: pointer;
  transition: transform 0.08s, box-shadow 0.08s, filter 0.15s;
  letter-spacing: 0.01em;
}
.btn:hover {
  filter: brightness(1.06);
}
.btn:active {
  transform: translateY(4px);
  box-shadow: 0 1px 0 var(--coral-deep);
}
.btn:disabled {
  filter: grayscale(0.7) opacity(0.6);
  cursor: default;
}
.btn.blue {
  background: var(--sky-deep);
  box-shadow: 0 5px 0 var(--sea-deep);
}
.btn.green {
  background: var(--grass);
  box-shadow: 0 5px 0 var(--grass-deep);
}
.btn.sand {
  background: var(--sun);
  color: var(--ink);
  box-shadow: 0 5px 0 var(--sand-deep);
}
.btn.ghost {
  background: #fff;
  color: var(--ink);
  box-shadow: 0 5px 0 rgba(15, 43, 70, 0.25);
}
.btn.small {
  font-size: 0.85rem;
  padding: 0.5em 1em;
}

.card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1rem 1.2rem;
}