:root {
  /* Colors */
  --charcoal: #292626ff;
  --warm-gray: #666666;
  --lead: #944d0a;
  --lead-hover: #7d5128ff;
  --win-green: rgba(70, 173, 128, 0.9);
  --win-green-dark: rgba(43, 47, 44, 0.9);
  --background-light: hsla(0, 0%, 10%);
  --pure-white: var(--background-light);
  --text-dark: #d6cec4ff;
  --error-red: rgba(152, 123, 123);
  --error-red-light: rgba(106, 68, 68, 0.2);
  --progress-bar: var(--lead);
  --progress-bar-bg: #ffffff11;

  /* Spacing */
  --spacing-xxs: 0.15rem;
  --spacing-xs: 0.3rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;

  /* Border Radius */
  --radius-sm: 5px;
  --radius-md: 10px;
  --radius-lg: 20px;

  /* Font Sizes */
  --text-xs: 0.875rem;
  --text-sm: 1rem;
  --text-md: 1.1rem;
  --text-lg: 1.2rem;
  --text-xl: 1.5rem;
  --text-xxl: 2rem;
  --text-xxxl: 4rem;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
}

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

::selection {
  background-color: var(--lead);
  color: var(--pure-white);
}

html,
body {
  height: 100vh;
  margin: 0;
  padding: 0;
  overflow-x: hidden;
}

body {
  font-family: 'Helvetica', sans-serif;
  letter-spacing: -0.03em;
  line-height: 1.2;
  background-color: var(--background-light);
  color: var(--text-dark);
  display: flex;
  flex-direction: column;
}


main {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  flex: 1;
}

p {
  line-height: 1.5rem;
}

legend {
  font-size: var(--text-xs);
  opacity: 0.7;
}

.intro-text,
.rules-container {
  max-width: 600px;
  margin: 0 auto;
  padding: var(--spacing-lg);
  text-align: left;
  font-size: var(--text-md);
}

.intro-text p,
.rules-container p {
  margin-bottom: var(--spacing-md);
}

h1 {
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
  font-size: var(--text-xxxl);
  text-align: center;
  position: relative;
  font-weight: 100;
  font-style: italic;
  letter-spacing: -4px;
  font-family: "Instrument Serif", serif;
}

.intro-text h2,
.rules-container h2 {
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
  font-size: var(--text-xl);
  text-align: center;
  position: relative;
  text-transform: uppercase;
}

.intro-text h2::after,
.rules-container h2::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -0.2em;
  width: 100%;
}

.intro-text h3,
.rules-container h3 {
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
  font-size: var(--text-md);
  text-transform: uppercase;
}

.intro-text a,
.rules-container a {
  color: var(--lead);
}

.instruction-number::first-letter {
  color: var(--lead);
  border-radius: 100%;
  width: 20px;
  height: 20px;
  letter-spacing: 0.1rem;
}

.game-container {
  padding: var(--spacing-lg);
  min-height: 450px;
  display: flex;
  flex-direction: column;
  flex: 1;
  overflow-x: auto;
  overflow-y: scroll;
}

h1 {
  color: var(--text-dark);
  margin-bottom: var(--spacing-md);
}

.end-display {
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
  margin: var(--spacing-md) 0;
}

#gamePlay .end-display {
  margin-bottom: var(--spacing-lg);
}

#gameOver .end-display {
  margin: var(--spacing-lg) 0;
}

.game-area {
  padding: var(--spacing-lg);
}

.game-button {
  padding: var(--spacing-sm);
  border: 0.5px solid var(--text-dark);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-normal);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  word-break: break-word;
  color: var(--text-dark);
  margin: 0 auto;
}

.game-button:hover {
  transform: translateY(-2px);
}

.sound-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
  width: 100%;
  justify-items: center;
  padding: 0 var(--spacing-sm);
}

/* Responsive grid adjustments */
@media (min-width: 1200px) {
  .sound-grid {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
  }
}

@media (max-width: 768px) {
  .sound-grid {
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: var(--spacing-sm);
  }
}

@media (max-width: 480px) {
  .sound-grid {
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--spacing-xs);
  }
}

.sound-button {
  background-color: var(--background-light);
  color: var(--text-dark);
  border: 2px solid var(--charcoal);
  border-radius: 16px;
  font-size: var(--text-sm);
  font-weight: 600;
  padding: 0.4em 1.2em;
  margin: 0.3em 0;
  display: inline-block;
  transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
  max-width: 200px;
  width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  text-align: center;
}

.sound-button:hover {
  background-color: var(--charcoal);
  color: var(--text-dark);
  border-color: var(--charcoal);
}

.sound-button:active,
.sound-button.selected,
.sound-button.active {
  background-color: var(--charcoal);
  border-color: var(--charcoal);
  color: var(--text-dark);
}

.sound-button.correct {
  border-color: var(--win-green);
  background-color: var(--win-green-dark);
  color: var(--text-dark);
}

.sound-button.incorrect {
  border-color: var(--error-red);
  background-color: var(--error-red-light);
  color: var(--text-dark);
}

.time-adjustment {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  justify-content: center;
}

.time-button {
  background-color: var(--lead);
  color: var(--pure-white);
  border: none;
  border-radius: 50%;
  width: 32px;
  height: 32px;
  font-size: var(--text-lg);
  cursor: pointer;
  transition: background-color var(--transition-fast), color var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  line-height: 1;
}

.time-button:hover {
  color: var(--pure-white);
}

.time-button.decrease:hover {
  background-color: var(--win-green);
}

.time-button.increase:hover {
  background-color: var(--error-red);
}

.time-button:active {
  transform: translateY(1px);
  background-color: var(--lead);
}

.time-button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  background-color: var(--lead-hover);
  border-color: var(--warm-gray);
}

.time-button:disabled:hover {
  transform: none;
  background-color: var(--lead-hover);
}

.primary-button {
  padding: var(--spacing-sm) var(--spacing-xl);
  background-color: var(--win-green);
  color: var(--pure-white);
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  font-size: var(--text-xs);
  transition: background-color var(--transition-normal);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  margin: 0 auto;
  text-transform: uppercase;
  font-weight: 600;
}

.primary-button:focus {
  outline: 2px solid var(--lead);
  outline-offset: 2px;
}

.primary-button:focus:not(:focus-visible) {
  outline: none;
  box-shadow: none;
}

.primary-button:focus-visible {
  outline: 2px solid var(--lead);
  outline-offset: 2px;
}

.primary-button:hover {
  transform: translateY(-1px);
}

.primary-button:active {
  transform: translateY(0);
}

.game-over {
  text-align: center;
  padding: var(--spacing-xl);
}

#footer-container {
  opacity: 0.3;
}

#footer-container:hover {
  opacity: 1;
  transition: opacity var(--transition-normal);
}

footer {
  text-align: center;
  padding: var(--spacing-md);
  color: var(--warm-gray);
  width: 100%;
  font-size: var(--text-xs);
  margin-bottom: var(--spacing-xl);
}

footer a {
  color: var(--lead);
  text-decoration: none;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-xs);
  font-size: var(--text-sm);
  font-weight: 600;
  text-transform: uppercase;
  background-color: var(--background-light);
  opacity: 0.8;
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
}

header:hover {
  opacity: 1;
  transition: opacity var(--transition-normal);
}

header a {
  color: var(--text-dark);
  text-decoration: none;
}

header a:hover {
  text-decoration: underline;
}

@media (max-width: 768px) {
  .sound-button {
    margin: 0.2em 0;
    padding: 0.3em 0.8em;
    font-size: var(--text-xs);
  }

  .game-container {
    padding: 10px;
  }

  .time-adjustment {
    gap: var(--spacing-xs);
  }

  .time-button {
    width: 28px;
    height: 28px;
    font-size: var(--text-md);
  }
}

.loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--background-light);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
}

.loading-content {
  text-align: center;
  padding: var(--spacing-xl);
}

.loading-spinner {
  width: 60px;
  height: 60px;
  border: 3px solid var(--lead-hover);
  border-top: 3px solid var(--lead);
  border-radius: 50%;
  margin: 0 auto var(--spacing-lg);
  animation: spin 1s cubic-bezier(0.68, -0.55, 0.265, 1.55) infinite;
}

@keyframes fadeIn {
  0% { opacity: 0; }
  100% { opacity: 1; }
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

#loadingProgress {
  color: var(--text-dark);
  font-size: var(--text-md);
  margin: 0;
  opacity: 0.8;
}

#applyGuess {
  margin-top: var(--spacing-md);
  width: 100%;
}

.session-sounds {
  margin: var(--spacing-lg) 0;
  padding: var(--spacing-md);
}

.session-sounds h3 {
  margin: 0 0 var(--spacing-sm) 0;
  font-size: var(--text-lg);
}

.session-sounds ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.session-sounds li {
  padding: var(--spacing-xs) 0;
  font-size: var(--text-md);
  text-transform: capitalize;
}

.recipient-selection {
  margin-bottom: var(--spacing-lg);`
  padding: var(--spacing-md);
  transition: all var(--transition-normal);
}

.recipient-selection h2,
.guessing-title {
  color: var(--text-dark);
  text-align: center;
  justify-content: center;
  margin: var(--spacing-lg) var(--spacing-md);
  font-size: var(--text-xxl);
  letter-spacing: -0.1rem;
}

.recipient-selection h2 span {
  transition: all var(--transition-normal);
  opacity: 0;
  transform: translateY(10px);
  position: relative;
}

.recipient-selection h2 span:not(:empty) {
  opacity: 1;
  transform: translateY(0);
}

.recipient-selection h2 span:not(:empty)::after {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: var(--background-light);
  transform-origin: right;
  animation: revealText 0.8s cubic-bezier(0.4, 0, 0.2, 1) both;
}

@keyframes revealText {
  0% {
    transform: scaleX(1);
  }
  100% {
    transform: scaleX(0);
  }
}

.recipient-checkbox {
  display: flex;
  align-items: center;
  margin: var(--spacing-xxs);
  border-radius: var(--radius-lg);
  transition: background-color var(--transition-normal);
  outline: none;
  flex-direction: row-reverse;
  justify-content: flex-end;
}

label::first-letter {
  text-transform: uppercase;
}

.recipient-checkbox:hover,
.recipient-checkbox:focus-within {
  background-color: var(--lead-hover);
}

.recipient-checkbox input[type='checkbox'] {
  appearance: none;
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  border: 2px solid var(--lead);
  border-radius: 100%;
  background-color: var(--pure-white);
  cursor: pointer;
  position: relative;
  transition: all var(--transition-normal);
  margin: var(--spacing-sm);
}

.recipient-checkbox input[type='checkbox']:checked {
  background-color: var(--lead);
  border-color: var(--lead);
}

.recipient-checkbox:has(> input[type='checkbox']:checked) {
  background-color: var(--lead);
  color: var(--pure-white);
}


.recipient-checkbox label {
  cursor: pointer;
  flex: 1;
  color: var(--text-dark);
}

.game-controls {
  max-width: 600px;
  min-width: 300px;
}

.time-progress-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 20px;
  background-color: var(--progress-bar-bg);
  z-index: 1000;
  opacity: 0.8;
}

.time-progress-bar {
  height: 100%;
  background-color: var(--progress-bar);
  width: 100%;
  transition: width 1s linear;
}

.tooltip {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.tooltiptext {
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
  position: absolute;
  min-width: 220px;
  max-width: 320px;
  background: var(--background-light);
  color: var(--text-dark);
  border: 1px solid var(--lead-hover);
  border-radius: var(--radius-lg);
  box-shadow: 0 2px 12px var(--charcoal);
  padding: var(--spacing-md);
  font-size: var(--text-sm);
  z-index: 200;
  /* transition: opacity var(--transition-fast), visibility var(--transition-fast); */
}

.tooltiptext .link {
  margin-top: 10px;
  float: right;
  color: var(--lead);
}

.tooltip:hover .tooltiptext,
.tooltip:focus-within .tooltiptext {
  visibility: visible;
  opacity: 1;
  pointer-events: auto;
}

.tooltiptext-dynamic {
  left: 100%;
  top: 50%;
  transform: translateY(-50%);
  margin-left: var(--spacing-md);
}

@media (max-width: 768px) {
  .tooltiptext {
    left: 0;
    top: 100%;
    transform: translateY(0);
    margin-left: 0;
    margin-top: var(--spacing-sm);
    min-width: 160px;
    max-width: 95vw;
  }
}


@keyframes move {
  100% {
    transform: translate3d(0, 0, 1px) rotate(360deg);
  }
}

.ball {
  position: absolute;
  border-radius: 100%;
  backface-visibility: hidden;
  animation: move linear infinite;
  z-index: -10;
  color: var(--lead);
  background-color: var(--lead);
  overflow: hidden;
}

.ball:nth-child(odd) {
  opacity: 0.2;
  color: #1d1d20;
  background-color: #1d1d20;
}

.ball:nth-child(even) {
  opacity: 0.15;
}