*,
*::after,
*::before {
  box-sizing: border-box;
  transition: all 0.2s ease-in-out;
}

:root {
  --primary-light: #3498db;
  --primary-dark: #2c3e50;
  --background-light: #f8f9fa;
  --background-dark: #1a1a2e;
  --text-light: #2c3e50;
  --text-dark: #ecf0f1;
  --border-light: #bdc3c7;
  --border-dark: #34495e;
  --shadow-light: rgba(0, 0, 0, 0.1);
  --shadow-dark: rgba(0, 0, 0, 0.3);
  --cell-size: 30px;
}

td {
  padding: 0;
}

h1 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: var(--primary-light);
  margin-top: 70px;
}

h2 {
  font-size: 2rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

p {
  text-align: center;
}

html {
  background: #fff;
}

html:has(body.dark) {
  background: rgb(91, 23, 91);
}

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  position: relative;
  max-width: 1200px;
  min-height: 100vh;
  margin: 0 auto;
  color: var(--text-light);
  background: var(--background-light);
  box-shadow: 0 0 30px var(--shadow-light);
}

.dark {
  color: var(--text-dark);
  background: var(--background-dark);
}

.dark button {
  color: #fff;
  background: rgb(91, 23, 91);
}

.screen {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 15px;
  flex-direction: column;
}

.screen--row {
  flex-direction: column;
}

.btn-wrapper {
  display: flex;
  margin-top: 30px;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}

button {
  font-size: 1rem;
  padding: 0.75rem 1.5rem;
  cursor: pointer;
  border: none;
  border-radius: 8px;
  background-color: var(--primary-light);
  color: white;
  box-shadow: 0 2px 4px var(--shadow-light);
  transition: all 0.2s ease;
}

@media (hover: hover) {
  button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px var(--shadow-light);
  }
  
  .dark button:hover {
    background: rgb(129, 21, 129);
    scale: 1.05;
  }
}

.rules-container {
  margin: 0;
}

.rules-container li {
  padding: 0;
  margin-bottom: 20px;
  font-size: 24px;
}

#win-screen,
#menu-screen,
#game-screen {
  flex-direction: column;
}

#timer {
  font-size: 30px;
  letter-spacing: 3px;
}

.game {
  display: grid;
  grid-template-columns: repeat(2, max-content);
  max-width: 100%;
  overflow: auto;
  padding: 10px;
}

#field {
  display: grid;
  border-collapse: collapse;
  transform-origin: top left;
}

#win-screen #field {
  border: none;
}

#field td {
  position: relative;
  width: var(--cell-size);
  height: var(--cell-size);
  border: 1px solid var(--border-light);
  background: white;
  transition: background-color 0.1s ease;
}

.dark #field td {
  border-color: var(--border-dark);
  background: var(--background-dark);
}

#field td:nth-child(5n) {
  border-right: 2px solid #000;
}

.dark #field td:nth-child(5n) {
  border-right: 1px solid rgb(91, 23, 91);
}

#win-screen td {
  border: none !important;
}

#field td.active {
  background: var(--primary-light);
}

.dark #field td.active {
  background: var(--primary-dark);
}

#row-nums {
  display: grid;
  border-collapse: collapse;
  border: 1px solid #000;
  border-top: none;
  border-bottom: none;
}

.dark #row-nums {
  border: 1px solid rgb(91, 23, 91);
}

#column-nums {
  display: grid;
  border: 1px solid #000;
  border-right: none;
  border-left: none;
  grid-auto-flow: column;
  grid-column: 2 / -1;
}

.dark #column-nums {
  border: 1px solid rgb(91, 23, 91);
}

#row-nums td,
#column-nums td {
  font-size: 0.9rem;
  width: var(--cell-size);
  height: var(--cell-size);
  padding: 0.25rem;
  border: 1px solid var(--border-light);
  background: var(--background-light);
}

.dark #row-nums td,
.dark #column-nums td {
  border-color: var(--border-dark);
  background: var(--background-dark);
}

#row-nums td:nth-child(5n) {
  border-bottom: 2px solid #000;
}

.dark #row-nums td:nth-child(5n) {
  border-bottom: 1px solid rgb(91, 23, 91);
}

#column-nums td:nth-child(5n) {
  border-right: 2px solid #000;
}

.dark #column-nums td:nth-child(5n) {
  border-right: 2px solid rgb(91, 23, 91);
}

#row-nums td:first-child {
  border-top: 2px solid #000;
}

.dark #row-nums td:first-child {
  border-top: 1px solid rgb(91, 23, 91);
}

#column-nums td:first-child {
  border-left: 2px solid #000;
}

.dark #column-nums td:first-child {
  border-left: 1px solid rgb(91, 23, 91);
}

#row-nums td {
  justify-content: right;
  width: auto;
  padding: 0 5px;
  border: 1px solid #000;
  border-right: none;
}

.dark #row-nums td {
  border: 1px solid rgb(91, 23, 91);
}

#column-nums td {
  height: auto;
  padding: 5px 10px;
  border: 1px solid #000;
  border-bottom: none;
  display: flex;
  align-items: center;
}

.dark #column-nums td {
  border: 1px solid rgb(91, 23, 91);
}

.category {
  display: grid;
  grid-template-columns: repeat(2, minmax(250px, 1fr));
  gap: 1.5rem;
  list-style: none;
  padding: 1.5rem;
}

@media (max-width: 768px) {
  .category {
    grid-template-columns: repeat(1, minmax(250px, 1fr));
  }
}

.category li {
  background: white;
  display: flex;
  padding: 1rem;
  border-radius: 8px;
  box-shadow: 0 2px 4px var(--shadow-light);
  transition: all 0.2s ease;
}

.category li button:first-child {
  flex-grow: 1;
}

.dark .category li {
  background: var(--background-dark);
  box-shadow: 0 2px 4px var(--shadow-dark);
}

.category li:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px var(--shadow-light);
}

.delete-btn {
  width: 24px;
  height: 24px;
  padding: 0;
  align-self: center;
  margin-left: 10px;
  background: #ff6b6b;
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.category li:hover .delete-btn {
  opacity: 1;
}

.dark .delete-btn {
  background: #ff4d4d;
}

.dark .delete-btn:hover {
  background: #ff3333;
}

.cross::before,
.cross::after {
  position: absolute;
  top: 50%;
  left: 0;
  width: 100%;
  height: 2px;
  content: '';
  background: #000;
}

.dark .cross::before,
.dark .cross::after {
  background: #eee;
}

.cross::before {
  rotate: 45deg;
}

.cross::after {
  rotate: -45deg;
}

.records {
  margin: 30px 0 0;
  padding: 0;
  text-align: center;
  border: 2px solid var(--border-light);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 6px var(--shadow-light);
  list-style: none;
  width: 100%;
}

.records li {
  padding: 1rem;
  border-bottom: 1px solid var(--border-light);
}

.records li:last-of-type {
  border: none;
}

.records::before {
  font-size: 1.25rem;
  font-weight: 600;
  padding: 1rem;
  background: var(--primary-light);
  color: white;
}

.dark .records {
  border-color: var(--border-dark);
  box-shadow: 0 4px 6px var(--shadow-dark);
}

.dark .records li,
.dark .records::before {
  border-bottom-color: var(--border-dark);
}

.dark .records li:last-of-type {
  border: none;
}

.theme-button {
  position: absolute;
  top: 15px;
  left: 15px;
  margin-bottom: auto;
}

.sound-button {
  position: absolute;
  top: 15px;
  right: 15px;
  margin-bottom: auto;
  background-color: #edf1f4 !important; 
}


.theme-button img,
.sound-button img {
  display: block;
}

#create-screen {
  gap: 30px;
  padding: 40px;
}

#create-screen h1 {
  font-size: 48px;
  margin-bottom: 20px;
  color: #2c3e50;
}

.dark #create-screen h1 {
  color: #ecf0f1;
}

#create-screen input[type="text"],
#create-screen select,
#create-screen input[type="color"] {
  font-size: 1rem;
  padding: 0.75rem 1rem;
  border: 2px solid var(--border-light);
  border-radius: 8px;
  background: white;
  color: var(--text-light);
  min-width: 300px;
  transition: all 0.2s ease;
}

#create-screen input[type="color"] {
  height: 90px;
}

#create-screen input[type="text"]:focus,
#create-screen select:focus,
#create-screen input[type="color"]:focus {
  outline: none;
  border-color: var(--primary-light);
  box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2);
}

.dark #create-screen input[type="text"],
.dark #create-screen select,
.dark #create-screen input[type="color"] {
  background: var(--background-dark);
  color: var(--text-dark);
  border-color: var(--border-dark);
}

#create-screen .game {
  margin: 30px 0;
  padding: 20px;
  background: #f8f9fa;
  border-radius: 12px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.dark #create-screen .game {
  background: #34495e;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
}

#create-screen .btn-wrapper {
  margin-top: 40px;
  gap: 15px;
}

#create-screen button {
  font-size: 20px;
  padding: 12px 24px;
  border-radius: 8px;
  background: #3498db;
  color: white;
  transition: all 0.3s ease;
}

#create-screen button:hover {
  background: #2980b9;
  transform: translateY(-2px);
}

.dark #create-screen button {
  background: #2c3e50;
}

.dark #create-screen button:hover {
  background: #34495e;
}


@media (max-width: 768px) {
  #win-screen #field {
    scale: 0.8;
    transform-origin: center;
  }
}