/* style.css - Premium Visual Identity for Monkey Typing Test */
@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@300;400;500;700&family=Outfit:wght@300;400;500;600;700;800&display=swap');

/* Color Variables and Theme Defaults */
:root {
  /* Fonts */
  --font-ui: 'Outfit', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* UI Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.15), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

/* Dark Mode (Default) */
html.dark {
  --bg-color: #191919;
  --card-bg: #2c2e31;
  --text-color: #d1d0c5;
  --sub-color: #646669;
  --accent-color: #e2b714;
  --accent-color-rgb: 226, 183, 20;
  --error-color: #ca4754;
  --error-bg: rgba(202, 71, 84, 0.15);
  --correct-color: #d1d0c5;
  --untyped-color: #646669;
  --border-color: #323437;
  --key-bg: #2c2e31;
  --key-border: #3b3d40;
  --key-active: #3c3e41;
}

/* Light Mode */
html.light {
  --bg-color: #f3f3f3;
  --card-bg: #ffffff;
  --text-color: #2c2e31;
  --sub-color: #7d8187;
  --accent-color: #c49102;
  --accent-color-rgb: 196, 145, 2;
  --error-color: #b83441;
  --error-bg: rgba(184, 52, 65, 0.1);
  --correct-color: #2c2e31;
  --untyped-color: #8c8f94;
  --border-color: #e2e4e7;
  --key-bg: #e9eaec;
  --key-border: #d4d6db;
  --key-active: #d6d8dd;
}

/* Font Size System */
html.font-size-small { font-size: 14px; }
html.font-size-medium { font-size: 16px; }
html.font-size-large { font-size: 18px; }

/* Typing Text Size System */
html.text-size-small .typing-container { font-size: 1.25rem; line-height: 1.8rem; }
html.text-size-medium .typing-container { font-size: 1.65rem; line-height: 2.3rem; }
html.text-size-large .typing-container { font-size: 2.1rem; line-height: 2.8rem; }

/* General Reset */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  scrollbar-width: thin;
  scrollbar-color: var(--border-color) transparent;
}

body {
  font-family: var(--font-ui);
  background-color: var(--bg-color);
  color: var(--text-color);
  transition: background-color var(--transition-normal), color var(--transition-normal);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

a {
  color: var(--accent-color);
  text-decoration: none;
  transition: opacity var(--transition-fast);
}
a:hover {
  opacity: 0.8;
}

/* App Header & Navigation */
header {
  border-bottom: 1px solid var(--border-color);
  background-color: rgba(var(--bg-color), 0.8);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 100;
  transition: border-color var(--transition-normal);
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.75rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Logo block */
.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 800;
  font-size: 1.4rem;
  color: var(--text-color);
  cursor: pointer;
  letter-spacing: -0.5px;
}
.logo-icon {
  width: 28px;
  height: 28px;
  fill: var(--accent-color);
}
.logo span {
  color: var(--accent-color);
}

nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.nav-link {
  color: var(--sub-color);
  font-weight: 500;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  cursor: pointer;
  padding: 0.4rem 0.6rem;
  border-radius: 6px;
  transition: color var(--transition-fast), background-color var(--transition-fast);
}
.nav-link:hover, .nav-link.active {
  color: var(--text-color);
  background-color: rgba(var(--accent-color-rgb), 0.1);
}
.nav-link.active {
  color: var(--accent-color);
  font-weight: 600;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Mini streak display */
.mini-streak {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  background-color: rgba(var(--accent-color-rgb), 0.15);
  color: var(--accent-color);
  font-weight: 600;
  font-size: 0.85rem;
  padding: 0.25rem 0.5rem;
  border-radius: 20px;
}

/* Main Container styling */
main {
  flex: 1;
  max-width: 1000px;
  width: 100%;
  margin: 0 auto;
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
}

/* Screen Management */
.screen {
  display: none;
  animation: fadeIn 0.3s ease;
}
.screen.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Hero Section / Homepage */
.hero-section {
  text-align: center;
  padding: 4rem 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  max-width: 800px;
  margin: 0 auto;
}

.hero-logo-box {
  margin-bottom: 1.5rem;
  animation: float 4s ease-in-out infinite;
}
.hero-logo-box svg {
  width: 100px;
  height: 100px;
  fill: var(--accent-color);
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.hero-title {
  font-size: 3rem;
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 0.5rem;
  color: var(--text-color);
}
.hero-title span {
  color: var(--accent-color);
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--sub-color);
  margin-bottom: 2.5rem;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 3.5rem;
}

/* Custom Buttons styling */
.btn {
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: 1rem;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: transform 0.1s ease, box-shadow var(--transition-fast), background-color var(--transition-fast), color var(--transition-fast);
}
.btn:active {
  transform: scale(0.97);
}

.btn-primary {
  background-color: var(--accent-color);
  color: var(--bg-color);
}
.btn-primary:hover {
  box-shadow: 0 0 15px rgba(var(--accent-color-rgb), 0.4);
}

.btn-secondary {
  background-color: var(--card-bg);
  color: var(--text-color);
  border: 1px solid var(--border-color);
}
.btn-secondary:hover {
  background-color: var(--border-color);
}

.btn-accent-outline {
  background-color: transparent;
  color: var(--accent-color);
  border: 2px solid var(--accent-color);
}
.btn-accent-outline:hover {
  background-color: rgba(var(--accent-color-rgb), 0.1);
}

.btn-sm {
  font-size: 0.85rem;
  padding: 0.4rem 0.8rem;
  border-radius: 6px;
}

/* Feature Cards Grid */
.hero-features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  width: 100%;
  margin-top: 1rem;
}

.feature-card {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  padding: 1.5rem;
  border-radius: 12px;
  text-align: left;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}
.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-color);
}
.feature-icon {
  font-size: 2rem;
  margin-bottom: 0.75rem;
  color: var(--accent-color);
}
.feature-card h3 {
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}
.feature-card p {
  font-size: 0.85rem;
  color: var(--sub-color);
  line-height: 1.25rem;
}

/* Level Selection Page */
.levels-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
  flex-wrap: wrap;
  gap: 1rem;
}
.levels-title-box h2 {
  font-size: 2rem;
  font-weight: 800;
}
.levels-progress-box {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  min-width: 250px;
}
.progress-bar-container {
  background-color: var(--border-color);
  height: 8px;
  border-radius: 4px;
  overflow: hidden;
  position: relative;
}
.progress-bar-fill {
  background-color: var(--accent-color);
  height: 100%;
  width: 0%;
  transition: width var(--transition-normal);
}
.progress-text {
  font-size: 0.85rem;
  color: var(--sub-color);
  font-weight: 500;
  display: flex;
  justify-content: space-between;
}

/* Tab Filters for levels */
.level-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  overflow-x: auto;
  padding-bottom: 0.5rem;
}
.level-tab {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  color: var(--sub-color);
  padding: 0.5rem 1rem;
  border-radius: 6px;
  cursor: pointer;
  white-space: nowrap;
  font-weight: 500;
  transition: var(--transition-fast);
}
.level-tab:hover, .level-tab.active {
  color: var(--text-color);
  border-color: var(--sub-color);
}
.level-tab.active {
  background-color: var(--accent-color);
  color: var(--bg-color);
  border-color: var(--accent-color);
}

/* Levels Grid */
.levels-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
}

.level-card {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: var(--transition-fast);
}
.level-card:hover {
  border-color: var(--sub-color);
}
.level-card.locked {
  opacity: 0.6;
}
.level-card.completed {
  border-color: rgba(var(--accent-color-rgb), 0.4);
}

.level-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}
.level-num {
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--sub-color);
}
.level-badge {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  background-color: rgba(var(--text-color), 0.08);
}
.badge-beginner { color: #2ecc71; }
.badge-elementary { color: #3498db; }
.badge-intermediate { color: #f1c40f; }
.badge-advanced { color: #e67e22; }
.badge-expert { color: #e74c3c; }

.level-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.3rem;
  line-height: 1.3rem;
}
.level-desc {
  font-size: 0.8rem;
  color: var(--sub-color);
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.level-stats {
  border-top: 1px solid var(--border-color);
  padding-top: 0.75rem;
  margin-bottom: 1rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
  font-size: 0.8rem;
}
.level-stat-val {
  font-weight: 700;
  color: var(--text-color);
}

.level-card-action {
  width: 100%;
}
.btn-level-play {
  width: 100%;
  justify-content: center;
}

/* Typing Screen styling */
.typing-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.typing-title-info {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.typing-title-info h2 {
  font-size: 1.5rem;
  font-weight: 800;
}
.typing-difficulty {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  background-color: var(--border-color);
}

/* Live Stats Display Panel */
.live-stats {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  padding: 0.5rem 1.25rem;
  border-radius: 20px;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--sub-color);
}
.live-stats-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}
.live-stats-val {
  font-weight: 700;
  color: var(--accent-color);
}

/* Typing Input Area Wrapper */
.typing-area-wrapper {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 2.25rem;
  position: relative;
  margin-bottom: 2rem;
  overflow: hidden;
}

/* Focused vs Blur states */
.typing-container {
  font-family: var(--font-mono);
  letter-spacing: 0.5px;
  color: var(--untyped-color);
  outline: none;
  user-select: none;
  cursor: text;
  text-align: left;
  max-height: 140px; /* approximately 3 lines */
  overflow: hidden;
  position: relative;
}

.blur-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(var(--bg-color), 0.85);
  backdrop-filter: blur(5px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  z-index: 10;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
}
.typing-area-wrapper.blurred .blur-overlay {
  opacity: 1;
  pointer-events: auto;
}
.blur-overlay p {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text-color);
}

/* Words and Characters layout */
.typing-container-inner {
  display: flex;
  flex-wrap: wrap;
  width: 100%;
  position: relative;
  top: 0;
  transition: top var(--transition-normal);
}

.word {
  margin-right: 0.6em; /* space between words */
  margin-bottom: 0.3em;
  display: inline-flex;
  white-space: nowrap;
}

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

.char.correct {
  color: var(--correct-color);
}
.char.incorrect {
  color: var(--error-color);
  background-color: var(--error-bg);
  border-radius: 2px;
}

/* Caret/Cursor system */
.caret {
  position: absolute;
  width: 2px;
  height: 1.25em;
  background-color: var(--accent-color);
  z-index: 5;
  transition: left var(--transition-fast), top var(--transition-fast);
}

/* Caret styles */
html.caret-line .caret {
  width: 2px;
}
html.caret-block .caret {
  width: 0.6em;
  opacity: 0.55;
}
html.caret-underline .caret {
  width: 0.6em;
  height: 3px;
  transform: translateY(1.1em);
}

.caret.blinking {
  animation: caretBlink 1s infinite;
}

@keyframes caretBlink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

/* Typing action keys info */
.typing-footer-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--sub-color);
  margin-top: -1rem;
  margin-bottom: 2rem;
}
.typing-tip {
  display: flex;
  align-items: center;
  gap: 0.3rem;
}
.keycap {
  background-color: var(--border-color);
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-color);
  border: 1px solid var(--key-border);
}

/* Virtual Keyboard Area styling */
.keyboard-panel {
  margin-bottom: 2rem;
}

.virtual-keyboard {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  max-width: 820px;
  margin: 0 auto;
  padding: 1rem;
  background-color: rgba(var(--text-color), 0.02);
  border-radius: 12px;
  border: 1px solid var(--border-color);
}

.keyboard-row {
  display: flex;
  justify-content: center;
  gap: 0.35rem;
  width: 100%;
}

.keyboard-key {
  height: 42px;
  background-color: var(--key-bg);
  border: 1px solid var(--key-border);
  border-radius: 6px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  position: relative;
  flex: 1 1 42px;
  min-width: 0;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), transform 0.05s ease;
  user-select: none;
}

/* Character text layouts inside key */
.keyboard-key .single-char {
  font-family: var(--font-ui);
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--sub-color);
}
.keyboard-key .main-char {
  font-family: var(--font-ui);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--sub-color);
}
.keyboard-key .shift-char {
  font-family: var(--font-ui);
  font-size: 0.7rem;
  color: var(--sub-color);
  opacity: 0.6;
}

/* Custom sizes for non-char keys */
.key-backspace { flex-grow: 2.2; }
.key-tab { flex-grow: 1.5; }
.key-capslock { flex-grow: 1.8; }
.key-enter { flex-grow: 2.2; }
.key-shift-left { flex-grow: 2.5; }
.key-shift-right { flex-grow: 2.5; }
.key-spacebar { flex-grow: 8; max-width: 320px; }

/* Highlights states */
.keyboard-key.highlight-next {
  background-color: rgba(var(--accent-color-rgb), 0.2);
  border-color: var(--accent-color);
}
.keyboard-key.highlight-next span {
  color: var(--accent-color);
  font-weight: 700;
}

.keyboard-key.highlight-error {
  background-color: var(--error-bg);
  border-color: var(--error-color);
  animation: keyShake 0.15s ease;
}
.keyboard-key.highlight-error span {
  color: var(--error-color);
}

@keyframes keyShake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-4px); }
  75% { transform: translateX(4px); }
}

/* Results Screen Page */
.results-container {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 2.5rem;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.pb-ribbon {
  background-color: var(--accent-color);
  color: var(--bg-color);
  font-weight: 800;
  font-size: 0.9rem;
  padding: 0.35rem 1rem;
  border-radius: 20px;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-bottom: 1.5rem;
  box-shadow: 0 4px 10px rgba(var(--accent-color-rgb), 0.3);
  animation: scaleIn 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes scaleIn {
  from { transform: scale(0.8); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.results-stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.result-stat-card {
  border-left: 2px solid var(--border-color);
  padding-left: 1rem;
  text-align: left;
}
.result-stat-card.accent {
  border-left-color: var(--accent-color);
}
.result-stat-label {
  font-size: 0.85rem;
  color: var(--sub-color);
  font-weight: 500;
  margin-bottom: 0.25rem;
}
.result-stat-val {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-color);
}
.result-stat-card.accent .result-stat-val {
  color: var(--accent-color);
}

.result-stat-subrow {
  display: flex;
  justify-content: space-around;
  background-color: rgba(var(--text-color), 0.03);
  padding: 1rem;
  border-radius: 8px;
  margin-bottom: 2.5rem;
  border: 1px solid var(--border-color);
}
.result-sub-item {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}
.result-sub-label {
  font-size: 0.8rem;
  color: var(--sub-color);
}
.result-sub-val {
  font-weight: 700;
  font-size: 1.1rem;
}

.results-actions {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Typing Mode Selection Tabs in Game */
.modes-bar {
  display: flex;
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  padding: 0.35rem;
  border-radius: 10px;
  margin-bottom: 2rem;
  overflow-x: auto;
  gap: 0.25rem;
}
.mode-btn {
  background: transparent;
  border: none;
  color: var(--sub-color);
  padding: 0.6rem 1.2rem;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  border-radius: 7px;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: var(--transition-fast);
}
.mode-btn:hover {
  color: var(--text-color);
}
.mode-btn.active {
  background-color: rgba(var(--accent-color-rgb), 0.15);
  color: var(--accent-color);
}

/* Sub-config section for Timed / Word tests */
.mode-subconfigs {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-top: -1rem;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
}
.subconfig-btn {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  color: var(--sub-color);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.4rem 0.8rem;
  border-radius: 6px;
  cursor: pointer;
  transition: var(--transition-fast);
}
.subconfig-btn:hover, .subconfig-btn.active {
  color: var(--text-color);
  border-color: var(--sub-color);
}
.subconfig-btn.active {
  color: var(--accent-color);
  border-color: var(--accent-color);
}

/* Custom Text Input Panel */
.custom-text-panel {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 2rem;
  max-width: 700px;
  margin: 0 auto 2rem auto;
}
.custom-text-panel h3 {
  font-weight: 700;
  margin-bottom: 1rem;
}
.custom-textarea {
  width: 100%;
  height: 120px;
  background-color: rgba(var(--text-color), 0.03);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.75rem;
  color: var(--text-color);
  font-family: var(--font-mono);
  font-size: 0.95rem;
  resize: none;
  outline: none;
  margin-bottom: 1rem;
}
.custom-textarea:focus {
  border-color: var(--accent-color);
}
.custom-configs-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}
.custom-time-input-box {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.custom-time-input-box label {
  font-size: 0.85rem;
  color: var(--sub-color);
  font-weight: 600;
}
.input-field {
  width: 80px;
  background-color: rgba(var(--text-color), 0.03);
  border: 1px solid var(--border-color);
  padding: 0.4rem 0.6rem;
  color: var(--text-color);
  font-family: var(--font-ui);
  border-radius: 6px;
  outline: none;
  font-weight: 600;
}
.input-field:focus {
  border-color: var(--accent-color);
}

/* Statistics Dashboard styling */
.stats-header-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2.5rem;
}
.stat-box {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}
.stat-box-icon {
  font-size: 2.2rem;
  color: var(--accent-color);
}
.stat-box-content {
  display: flex;
  flex-direction: column;
}
.stat-box-label {
  font-size: 0.85rem;
  color: var(--sub-color);
  font-weight: 500;
}
.stat-box-val {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text-color);
}

/* Charts Layout Panels */
.charts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}
.chart-card {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.5rem;
}
.chart-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
  color: var(--text-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.chart-card h3 span {
  font-size: 0.8rem;
  color: var(--sub-color);
  font-weight: 500;
}

.chart-container-el {
  width: 100%;
  height: 180px;
  position: relative;
}
.chart-placeholder {
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  color: var(--sub-color);
  font-size: 0.9rem;
  border: 1px dashed var(--border-color);
  border-radius: 8px;
}

/* Settings Page layout */
.settings-container {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 2.5rem;
  max-width: 700px;
  margin: 0 auto;
}
.settings-container h2 {
  font-size: 1.8rem;
  font-weight: 800;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.75rem;
}

.settings-section {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.setting-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
  border-bottom: 1px dashed var(--border-color);
  padding-bottom: 1.25rem;
}
.setting-row:last-child {
  border-bottom: none;
}

.setting-info {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}
.setting-label {
  font-size: 1rem;
  font-weight: 700;
}
.setting-desc {
  font-size: 0.85rem;
  color: var(--sub-color);
}

.setting-control {
  min-width: 140px;
  display: flex;
  justify-content: flex-end;
}

/* Custom Select styling */
.select-field {
  background-color: rgba(var(--text-color), 0.05);
  border: 1px solid var(--border-color);
  color: var(--text-color);
  padding: 0.5rem 1rem;
  font-family: var(--font-ui);
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: 8px;
  outline: none;
  cursor: pointer;
}
.select-field:focus {
  border-color: var(--accent-color);
}

/* Custom Toggle Switch styling */
.switch {
  position: relative;
  display: inline-block;
  width: 48px;
  height: 24px;
}
.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}
.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--border-color);
  transition: .2s;
  border-radius: 24px;
}
.slider:before {
  position: absolute;
  content: "";
  height: 18px;
  width: 18px;
  left: 3px;
  bottom: 3px;
  background-color: var(--text-color);
  transition: .2s;
  border-radius: 50%;
}
input:checked + .slider {
  background-color: var(--accent-color);
}
input:checked + .slider:before {
  transform: translateX(24px);
  background-color: var(--bg-color);
}

/* About Page styling */
.about-card {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 2.5rem;
  max-width: 800px;
  margin: 0 auto;
}
.about-card h2 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 1.5rem;
}
.about-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
}
.about-card p {
  color: var(--sub-color);
  font-size: 1rem;
  line-height: 1.6rem;
  margin-bottom: 1rem;
}
.about-card ul {
  list-style: none;
  padding-left: 0.5rem;
  margin-bottom: 1.5rem;
}
.about-card li {
  margin-bottom: 0.5rem;
  color: var(--sub-color);
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.about-card li:before {
  content: "⚡";
  color: var(--accent-color);
}

/* Daily Challenge Page info card */
.daily-intro-card {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 2rem;
  max-width: 700px;
  margin: 0 auto 2rem auto;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.daily-intro-card:after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--accent-color), transparent);
}
.daily-intro-header {
  font-weight: 800;
  font-size: 1.7rem;
  margin-bottom: 0.5rem;
}
.daily-intro-sub {
  color: var(--sub-color);
  font-size: 0.95rem;
  margin-bottom: 1.75rem;
}
.daily-records-row {
  display: flex;
  justify-content: center;
  gap: 2.5rem;
  margin-bottom: 2rem;
}
.daily-rec-item {
  display: flex;
  flex-direction: column;
}
.daily-rec-label {
  font-size: 0.8rem;
  color: var(--sub-color);
}
.daily-rec-val {
  font-size: 1.4rem;
  font-weight: 700;
}
.daily-actions {
  display: flex;
  justify-content: center;
}

/* Footer Section */
footer {
  border-top: 1px solid var(--border-color);
  background-color: var(--bg-color);
  color: var(--sub-color);
  text-align: center;
  font-size: 0.85rem;
  padding: 1.5rem;
  margin-top: auto;
  transition: border-color var(--transition-normal);
}
.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-links {
  display: flex;
  gap: 1.25rem;
}

/* Responsive Media Queries */
@media (max-width: 900px) {
  .charts-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .header-container {
    flex-direction: column;
    gap: 0.75rem;
    padding: 1rem;
  }
  nav {
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem;
  }
  .hero-title {
    font-size: 2.25rem;
  }
  .hero-subtitle {
    font-size: 1.1rem;
  }
  .levels-header {
    flex-direction: column;
    align-items: flex-start;
  }
  .typing-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
  .typing-area-wrapper {
    padding: 1.5rem;
  }
  .keyboard-key {
    height: 34px;
    border-radius: 4px;
  }
  .keyboard-key .single-char {
    font-size: 0.8rem;
  }
  .keyboard-key .shift-char {
    display: none; /* hide shift chars on small screens to save space */
  }
  .results-stats-row {
    grid-template-columns: 1fr 1fr;
  }
  .footer-content {
    flex-direction: column;
    gap: 0.5rem;
  }
}

@media (max-width: 480px) {
  main {
    padding: 1rem;
  }
  .hero-title {
    font-size: 1.8rem;
  }
  .levels-grid {
    grid-template-columns: 1fr;
  }
  .keyboard-panel {
    display: none; /* hide virtual keyboard on very small phones as they use native software keyboards */
  }
  .result-stat-card {
    border-left: none;
    border-bottom: 2px solid var(--border-color);
    padding-left: 0;
    padding-bottom: 0.5rem;
  }
  .result-stat-card.accent {
    border-bottom-color: var(--accent-color);
  }
}