@font-face {
  font-family: 'Sora';
  src: url('./assets/fonts/Sora/static/Sora-Regular.ttf') format('truetype');
  font-weight: 400;
  font-style: normal;
}

@font-face {
  font-family: 'Sora';
  src: url('./assets/fonts/Sora/static/Sora-SemiBold.ttf') format('truetype');
  font-weight: 600;
  font-style: normal;
}

@font-face {
  font-family: 'Sora';
  src: url('./assets/fonts/Sora/static/Sora-Bold.ttf') format('truetype');
  font-weight: 700;
  font-style: normal;
}

@font-face {
  font-family: 'Sora';
  src: url('./assets/fonts/Sora/Sora-VariableFont_wght.ttf') format('truetype');
  font-weight: 100 900;
  font-style: normal;
}

:root {
  --neutral-900: hsl(0, 0%, 7%);
  --neutral-800: hsl(0, 0%, 15%);
  --neutral-500: hsl(240, 3%, 46%);
  --neutral-400: hsl(240, 1%, 59%);
  --neutral-0: hsl(0, 0%, 100%);

  --blue-600: hsl(214, 100%, 55%);
  --blue-400: hsl(210, 100%, 65%);

  --red-500: hsl(354, 63%, 57%);

  --green-500: hsl(140, 63%, 57%);

  --yellow-400: hsl(49, 85%, 70%);

  --font-family: 'Sora', sans-serif;
  --font-size-body: 1rem;
  --font-size-sm: 0.75rem;
  --font-size-lg: 1.25rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2.5rem;
  --font-size-3xl: 3.5rem;
  --font-weight-regular: 400;
  --font-weight-semi: 600;
  --font-weight-bold: 700;

  --space-2xs: 0.25rem;
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 2.5rem;
  --space-3xl: 3rem;
  --space-4xl: 4rem;

  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-full: 9999px;

  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
}

*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-regular);
  color: var(--neutral-0);
  background-color: var(--neutral-900);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--space-xl) var(--space-md);
}

img {
  display: block;
  max-width: 100%;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
  font-size: inherit;
}

ul {
  list-style: none;
}

.header {
  width: 100%;
  max-width: 48rem;
  margin-bottom: var(--space-lg);
}

.logo-large {
  display: block;
}

.logo-small {
  display: none;
}

.main {
  width: 100%;
  max-width: 48rem;
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.stats-bar {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr;
  gap: var(--space-xs);
  background-color: var(--neutral-800);
  border-radius: var(--radius-lg);
  padding: var(--space-md) var(--space-lg);
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  padding: var(--space-xs) 0;
}

.stat:first-child {
  flex-direction: row;
  justify-content: center;
  gap: var(--space-xs);
  flex-wrap: wrap;
}

.stat__value {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semi);
  line-height: 1.2;
}

.stat__label {
  font-size: var(--font-size-sm);
  color: var(--neutral-500);
  text-transform: lowercase;
}

.stat__icon {
  width: 1.5rem;
  height: 1.5rem;
}

.controls {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.dropdown {
  position: relative;
}

.dropdown__toggle {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  background-color: var(--neutral-800);
  color: var(--neutral-0);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-semi);
  transition: background-color var(--transition-fast);
}

.dropdown__toggle:hover,
.dropdown__toggle:focus-visible {
  background-color: hsl(0, 0%, 20%);
  outline: 2px solid var(--blue-400);
  outline-offset: 2px;
}

.dropdown__arrow {
  transition: transform var(--transition-fast);
}

.dropdown__arrow--open {
  transform: rotate(180deg);
}

.dropdown__menu {
  position: absolute;
  top: calc(100% + var(--space-xs));
  left: 0;
  min-width: 10rem;
  background-color: var(--neutral-800);
  border-radius: var(--radius-md);
  padding: var(--space-xs);
  display: none;
  z-index: 10;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.dropdown__menu--open {
  display: block;
}

.dropdown__option {
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: var(--font-size-body);
  transition: background-color var(--transition-fast);
}

.dropdown__option:hover {
  background-color: hsl(0, 0%, 22%);
}

.dropdown__option--selected {
  background-color: var(--blue-600);
  color: var(--neutral-0);
}

.dropdown__option--selected:hover {
  background-color: var(--blue-600);
}

.mode-toggle {
  display: flex;
  background-color: var(--neutral-800);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.mode-toggle__btn {
  padding: var(--space-sm) var(--space-md);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-semi);
  color: var(--neutral-400);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.mode-toggle__btn:hover,
.mode-toggle__btn:focus-visible {
  color: var(--neutral-0);
  outline: none;
}

.mode-toggle__btn:focus-visible {
  outline: 2px solid var(--blue-400);
  outline-offset: -2px;
}

.mode-toggle__btn--active {
  background-color: var(--blue-600);
  color: var(--neutral-0);
}

.mode-toggle__btn--active:hover {
  background-color: var(--blue-600);
  color: var(--neutral-0);
}

.restart-btn {
  margin-left: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  background-color: var(--neutral-800);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast);
}

.restart-btn:hover,
.restart-btn:focus-visible {
  background-color: hsl(0, 0%, 20%);
  outline: 2px solid var(--blue-400);
  outline-offset: 2px;
}

.typing-section {
  position: relative;
  background-color: var(--neutral-800);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  min-height: 12rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.passage {
  font-size: var(--font-size-lg);
  line-height: 1.6;
  color: var(--neutral-400);
  word-spacing: 0.1em;
}

.passage__text {
  white-space: pre-wrap;
  word-wrap: break-word;
}

.char {
  position: relative;
  transition: color var(--transition-fast);
}

.char--correct {
  color: var(--green-500);
}

.char--incorrect {
  color: var(--red-500);
  text-decoration: underline;
  text-decoration-color: var(--red-500);
}

.char--current {
  color: var(--yellow-400);
  animation: cursor-blink 1s step-end infinite;
}

@keyframes cursor-blink {
  0%, 100% {
    border-bottom: 2px solid var(--yellow-400);
  }
  50% {
    border-bottom-color: transparent;
  }
}

.char--typed {
  color: var(--neutral-0);
}

.input-area {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
  pointer-events: none;
}

.start-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  background-color: var(--neutral-800);
  border-radius: var(--radius-lg);
  z-index: 5;
  transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.start-overlay--hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.start-btn {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  background-color: var(--blue-600);
  color: var(--neutral-0);
  padding: var(--space-md) var(--space-xl);
  border-radius: var(--radius-full);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-semi);
  transition: background-color var(--transition-fast);
}

.start-btn:hover,
.start-btn:focus-visible {
  background-color: var(--blue-400);
  outline: none;
}

.start-btn:focus-visible {
  outline: 2px solid var(--neutral-0);
  outline-offset: 2px;
}

.start-btn__icon {
  display: flex;
  align-items: center;
}

.start-hint {
  font-size: var(--font-size-sm);
  color: var(--neutral-500);
}

.results {
  background-color: var(--neutral-800);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl) var(--space-xl);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xl);
  text-align: center;
}

.results[hidden] {
  display: none;
}

.results__header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
}

.results__icon {
  width: 2.5rem;
  height: 2.5rem;
}

.results__title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
}

.results__subtitle {
  font-size: var(--font-size-body);
  color: var(--neutral-500);
}

.results__pb-icon {
  width: 3rem;
  height: 3rem;
}

.results__pb-label {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--font-size-sm);
  color: var(--yellow-400);
  font-weight: var(--font-weight-semi);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.results__stats {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: var(--space-xl);
  width: 100%;
  max-width: 24rem;
}

.results__stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2xs);
}

.results__stat-value {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  line-height: 1.1;
}

.results__stat-label {
  font-size: var(--font-size-sm);
  color: var(--neutral-500);
  text-transform: lowercase;
}

.go-again-btn {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  background-color: var(--blue-600);
  color: var(--neutral-0);
  padding: var(--space-md) var(--space-xl);
  border-radius: var(--radius-full);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-semi);
  transition: background-color var(--transition-fast);
}

.go-again-btn:hover,
.go-again-btn:focus-visible {
  background-color: var(--blue-400);
  outline: none;
}

.go-again-btn:focus-visible {
  outline: 2px solid var(--neutral-0);
  outline-offset: 2px;
}

.confetti-container {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 100;
  overflow: hidden;
}

.confetti-piece {
  position: absolute;
  width: 0.5rem;
  height: 0.5rem;
  animation: confetti-fall 3s ease-out forwards;
}

@keyframes confetti-fall {
  0% {
    transform: translateY(-10vh) rotate(0deg) scale(1);
    opacity: 1;
  }
  100% {
    transform: translateY(110vh) rotate(720deg) scale(0.3);
    opacity: 0;
  }
}

@media (max-width: 640px) {
  body {
    padding: var(--space-md) var(--space-md);
  }

  .logo-large {
    display: none;
  }

  .logo-small {
    display: block;
  }

  .stats-bar {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
  }

  .stat:first-child {
    grid-column: 1 / -1;
    flex-direction: row;
  }

  .stat__value {
    font-size: var(--font-size-lg);
  }

  .controls {
    flex-wrap: wrap;
    gap: var(--space-sm);
  }

  .restart-btn {
    margin-left: auto;
  }

  .typing-section {
    padding: var(--space-lg) var(--space-md);
  }

  .passage {
    font-size: var(--font-size-body);
  }

  .results {
    padding: var(--space-xl) var(--space-md);
  }

  .results__title {
    font-size: var(--font-size-xl);
  }

  .results__stats {
    grid-template-columns: 1fr 1fr 1fr;
    gap: var(--space-md);
  }

  .results__stat-value {
    font-size: var(--font-size-2xl);
  }
}

@media (min-width: 768px) {
  .main {
    gap: var(--space-2xl);
  }

  .stats-bar {
    padding: var(--space-lg) var(--space-xl);
  }

  .stat__value {
    font-size: var(--font-size-2xl);
  }

  .typing-section {
    padding: var(--space-2xl);
  }

  .passage {
    font-size: var(--font-size-xl);
  }
}