@font-face {
  font-family: 'Andika';
  src: url('../assets/fonts/andika-regular.woff2') format('woff2');
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: 'Andika';
  src: url('../assets/fonts/andika-bold.woff2') format('woff2');
  font-weight: 700;
  font-display: swap;
}

:root {
  --color-sky: #c9ecff;
  --color-sky-dark: #9fd8f7;
  --color-grass: #7cc35a;
  --color-grass-dark: #4f9a35;
  --color-earth: #a1887f;
  --color-primary: #ff8f3a;
  --color-primary-dark: #e06d12;
  --color-correct: #43a047;
  --color-correct-dark: #2e7d32;
  --color-wrong: #e53935;
  --color-wrong-dark: #b71c1c;
  --color-secondary: #5c6bc0;
  --color-text: #263238;
  --color-muted: #607d8b;
  --color-card: #fffdf7;
  --color-syllable-odd: #1565c0;
  --color-syllable-even: #d32f2f;
  --color-sight-word: #e0e0e0;
  --color-gold: #ffc107;
  --radius-large: 28px;
  --radius-medium: 18px;
  --shadow-card: 0 6px 0 rgba(0, 0, 0, 0.12), 0 10px 24px rgba(0, 0, 0, 0.08);
  --font-reading: 'Andika', 'Trebuchet MS', sans-serif;
  --top-bar-height: 64px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  height: 100%;
}

body {
  font-family: var(--font-reading);
  color: var(--color-text);
  background: var(--color-sky);
  -webkit-tap-highlight-color: transparent;
  overflow-x: hidden;
}

button {
  font-family: inherit;
  color: inherit;
  cursor: pointer;
}

button:disabled {
  cursor: default;
  opacity: 0.45;
}

button:focus-visible,
input:focus-visible {
  outline: 4px solid var(--color-secondary);
  outline-offset: 3px;
}

.icon {
  display: inline-block;
  width: 1.4em;
  height: 1.4em;
  background-color: currentColor;
  -webkit-mask: var(--icon-url) center / contain no-repeat;
  mask: var(--icon-url) center / contain no-repeat;
  flex-shrink: 0;
}

.app {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

.app__background {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.app__background svg {
  width: 100%;
  height: 100%;
}

.app__screen {
  position: relative;
  z-index: 1;
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 0 16px 16px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.big-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 64px;
  padding: 12px 28px;
  border: none;
  border-radius: 999px;
  font-size: 1.4rem;
  font-weight: 700;
  color: #fff;
  background: var(--color-primary);
  box-shadow: 0 6px 0 var(--color-primary-dark);
  transition: transform 0.1s;
}

.big-button:active:not(:disabled) {
  transform: translateY(4px);
  box-shadow: 0 2px 0 var(--color-primary-dark);
}

.big-button--secondary {
  background: var(--color-secondary);
  box-shadow: 0 6px 0 #3949ab;
}

.big-button--quiet {
  color: var(--color-text);
  background: #fff;
  box-shadow: 0 6px 0 #cfd8dc;
}

.small-button {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 44px;
  padding: 6px 16px;
  border: 2px solid #cfd8dc;
  border-radius: 999px;
  background: #fff;
  font-size: 1rem;
}

.card {
  background: var(--color-card);
  border-radius: var(--radius-large);
  box-shadow: var(--shadow-card);
}

.screen-title {
  margin: 8px 0 16px;
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  text-align: center;
}

[hidden] {
  display: none !important;
}