/* 
 * Modern Typing Tutor Styles
 * Color Palette:
 * Primary Teal:      #449396
 * Primary Hover:     #3D8487
 * Dark Navy:         #293340
 * Background:        #F7F7F7
 * Card/Surface:      #FFFFFF
 * Main Text:         #2B323C
 * Muted Text:        #6B7280
 * Border:            #E9E9E9
 * Light Teal:        #D8EEED
 * Success:           #6FA56B
 * Error:             #DE7461
 * Warning:           #D6A84F
 */

/* ====================
   1. CSS Variables & Reset
   ==================== */

:root {
  /* Colors */
  --primary: #449396;
  --primary-hover: #3D8487;
  --dark-navy: #293340;
  --background: #F7F7F7;
  --card-surface: #FFFFFF;
  --main-text: #2B323C;
  --muted-text: #6B7280;
  --border-color: #E9E9E9;
  --light-teal: #D8EEED;
  --success: #6FA56B;
  --error: #DE7461;
  --warning: #D6A84F;
  --primary-blue: #449396;
  --light-blue: #D8EEED;
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-size-xs: 0.8125rem;
  --font-size-sm: 0.9375rem;
  --font-size-base: 1.0625rem;
  --font-size-lg: 1.1875rem;
  --font-size-xl: 1.3125rem;
  --font-size-2xl: 1.5625rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.5rem;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--main-text);
  background-color: var(--background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ====================
   2. Typography
   ==================== */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family);
  font-weight: 600;
  line-height: 1.25;
  color: var(--dark-navy);
  margin-bottom: var(--spacing-md);
}

h1 { font-size: var(--font-size-4xl); }
h2 {
  font-size: var(--font-size-3xl);
  /* color: #FFFFFF;
  background: var(--primary); */
  display: inline-block;
  /* padding: var(--spacing-sm) var(--spacing-lg); */
  /* border-radius: var(--radius-lg); */
}
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

p {
  font-family: var(--font-family);
  font-size: 1.25rem;
  line-height: 1.7;
  margin-bottom: var(--spacing-md);
  /* color: var(--muted-text); */
}

li {
  font-size: 1.25rem;
  line-height: 1.7;
}

a {
  color: var(--primary-blue);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--primary-hover);
}

/* ====================
   3. Layout Components
   ==================== */

.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.page_section {
  /* padding: var(--spacing-2xl) 0; */
}

.page_section.page_section_compact {
  padding-top: 96px;
  padding-bottom: 40px;
}

/* Cards */
.card {
  background: var(--card-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
  overflow: hidden;
}

.card-header {
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
  background: var(--background);
}

.card-body {
  padding: var(--spacing-lg);
}

.card-footer {
  padding: var(--spacing-lg);
  border-top: 1px solid var(--border-color);
  background: var(--background);
}

/* ====================
   4. Buttons
   ==================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-size-base);
  font-weight: 500;
  line-height: 1.5;
  text-align: center;
  text-decoration: none;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.btn:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(68, 147, 150, 0.3);
}

.btn-primary {
  background: var(--primary-blue);
  color: #FFFFFF;
  border-color: var(--primary-blue);
}

.btn-primary:hover {
  background: var(--primary-hover);
  border-color: var(--primary-hover);
  color: #FFFFFF;
}

.btn-secondary {
  background: var(--card-surface);
  color: var(--main-text);
  border-color: var(--border-color);
}

.btn-secondary:hover {
  background: var(--background);
  border-color: var(--border-color);
  color: var(--dark-navy);
}

.btn-success {
  background: var(--success);
  color: #FFFFFF;
  border-color: var(--success);
}

.btn-success:hover {
  background: #5D9160;
  border-color: #5D9160;
  color: #FFFFFF;
}

.btn-danger {
  background: var(--error);
  color: #FFFFFF;
  border-color: var(--error);
}

.btn-danger:hover {
  background: #D4665A;
  border-color: #D4665A;
  color: #FFFFFF;
}

.btn-lg {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-lg);
}

.btn-sm {
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: var(--font-size-sm);
}

/* ====================
   5. Forms
   ==================== */

.form-control {
  display: block;
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-base);
  font-family: inherit;
  line-height: 1.5;
  color: var(--main-text);
  background: var(--card-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 3px rgba(68, 147, 150, 0.15);
}

.form-control::placeholder {
  color: var(--muted-text);
}

select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%236B7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M2 5l6 6 6-6'/%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right var(--spacing-md) center;
  background-size: 16px 12px;
  padding-right: calc(var(--spacing-md) + 20px);
}

.form-label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-weight: 500;
  color: var(--main-text);
}

.form-group {
  margin-bottom: var(--spacing-lg);
}

/* ====================
   6. Header / Navigation
   ==================== */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 72px;
  background: var(--dark-navy);
  box-shadow: var(--shadow-sm);
  z-index: 1000;
  transition: all 0.3s ease;
}

.header.scrolled {
  height: 64px;
  box-shadow: var(--shadow-md);
}

.navbar {
  height: 100%;
}

.header .navbar .container-fluid {
  width: 100%;
  max-width: 100%;
  padding-left: 1rem;
  padding-right: 1rem;
  display: flex;
  align-items: center;
}

@media (min-width: 1400px) {
  .header .navbar .container-fluid {
    padding-left: 1.5rem;
    padding-right: 1.5rem;
  }
}

.navbar-brand {
  display: flex;
  align-items: center;
  height: 100%;
  padding: 0 0.75rem 0 0.25rem;
  flex-shrink: 0;
}

.navbar-brand img {
  height: 40px;
  width: auto;
  margin-right: var(--spacing-sm);
}

.navbar-brand span {
  font-size: calc(var(--font-size-xl) * 1.1);
  font-weight: 700;
  color: #FFFFFF;
}

.navbar-nav {
  display: flex;
  align-items: center;
  margin-left: auto;
  flex-wrap: nowrap;
}

/* Mobile off-canvas drawer (desktop = regular inline nav) */
.header .mobile-drawer {
  display: flex;
  flex: 1;
  align-items: center;
  justify-content: flex-end;
  min-width: 0;
}

.header .drawer-backdrop,
.header .mobile-drawer .drawer-head {
  display: none;
}

.header .navbar .navbar-toggler {
  color: #FFFFFF;
  border: none;
}

.header .navbar .navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(61, 132, 135)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

.nav-item {
  margin: 0 var(--spacing-sm);
}

.nav-link {
  display: block;
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-base);
  font-weight: 500;
  color: #FFFFFF;
  border-radius: var(--radius-md);
  transition: all 0.2s ease;
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary-blue);
  background: var(--light-blue);
}

/* Dropdown Menu */
.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  z-index: 1000;
  min-width: 240px;
  padding: var(--spacing-sm) 0;
  margin: var(--spacing-xs) 0 0;
  font-size: var(--font-size-base);
  color: var(--main-text);
  background: var(--card-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
}

.dropdown-item {
  display: block;
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-lg);
  clear: both;
  font-weight: 400;
  color: var(--main-text);
  text-align: inherit;
  text-decoration: none;
  white-space: nowrap;
  background: none;
  border: 0;
  border-radius: 0;
  transition: all 0.2s ease;
}

.dropdown-item:hover,
.dropdown-item:focus {
  color: var(--primary-hover);
  background: var(--light-blue);
  text-decoration: none;
}

.dropdown-divider {
  height: 0;
  margin: var(--spacing-sm) 0;
  overflow: hidden;
  border-top: 1px solid var(--border-color);
}

/* Navbar Toggler (Mobile) */
.navbar-toggler {
  display: none;
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-xl);
  line-height: 1;
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
}

.navbar-toggler-icon {
  display: inline-block;
  width: 1.5em;
  height: 1.5em;
  vertical-align: middle;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(255, 255, 255, 1)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: center;
  background-size: 100%;
}

/* Desktop header nav items with no-wrap and responsive spacing */
@media (min-width: 992px) {
  .header .navbar .nav-item,
  .header .navbar .navbar-nav > .nav-item {
    display: inline-flex;
    align-items: center;
    margin: 0 2px;
    vertical-align: middle;
    flex-shrink: 0;
  }

  .header .navbar .nav-item .nav-link {
    font-family: var(--font-family);
    font-size: 0.9375rem;
    font-weight: 500;
    text-transform: none;
    color: #FFFFFF;
    padding: 0.45rem 0.55rem;
    border-radius: var(--radius-md);
    white-space: nowrap !important;
    display: inline-flex;
    align-items: center;
    line-height: 1.2;
  }

  .header .navbar .nav-item .nav-link.dropdown-toggle::after {
    display: inline-block;
    margin-left: 0.35rem;
    vertical-align: middle;
    flex-shrink: 0;
    content: "";
  }
}

@media (min-width: 1200px) {
  .header .navbar .nav-item,
  .header .navbar .navbar-nav > .nav-item {
    margin: 0 3px;
  }

  .header .navbar .nav-item .nav-link {
    font-size: 0.98rem;
    padding: 0.45rem 0.65rem;
  }
}

@media (min-width: 1366px) {
  .header .navbar .nav-item,
  .header .navbar .navbar-nav > .nav-item {
    margin: 0 5px;
  }

  .header .navbar .nav-item .nav-link {
    font-size: 1.05rem;
    padding: 0.5rem 0.8rem;
  }
}

.header .navbar .nav-item .nav-link:hover,
.header .navbar .nav-item .nav-link:focus,
.header .navbar .nav-item .nav-link.active {
  color: var(--primary-blue);
  background: var(--light-blue);
}

.header .navbar .dropdown-menu .dropdown-item {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  padding: var(--spacing-sm) var(--spacing-lg);
  white-space: normal;
  color: var(--main-text);
}

.header .navbar .dropdown-menu .dropdown-item:hover,
.header .navbar .dropdown-menu .dropdown-item:focus {
  background: var(--light-blue);
  color: var(--primary-hover);
  padding-left: var(--spacing-lg);
}

@media (max-width: 991px) {
  .navbar-toggler {
    display: block;
    margin-left: auto;
    padding: 6px 8px;
  }
  .navbar-toggler:focus {
    box-shadow: none;
  }

  /* Off-canvas drawer: slides in from the right */
  .header .mobile-drawer {
    display: flex;
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(340px, 86vw);
    flex-direction: column;
    align-items: stretch;
    background: linear-gradient(180deg, #FFFFFF 0%, #F7FBFB 100%);
    border-left: 1px solid #DCE7E7;
    box-shadow: -12px 0 32px rgba(41, 51, 64, 0.18);
    z-index: 1050;
    padding: 18px 16px 32px;
    overflow-y: auto;
    transform: translateX(106%);
    visibility: hidden;
    transition: transform 0.34s cubic-bezier(0.4, 0, 0.2, 1), visibility 0s 0.34s;
  }
  .header .mobile-drawer.open {
    transform: translateX(0);
    visibility: visible;
    transition: transform 0.34s cubic-bezier(0.4, 0, 0.2, 1);
  }

  .header .drawer-backdrop {
    display: block;
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    background: rgba(41, 51, 64, 0.5);
    z-index: 1040;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0s 0.3s;
  }
  .header .drawer-backdrop.open {
    opacity: 1;
    visibility: visible;
    transition: opacity 0.3s ease;
  }

  .drawer-head {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 4px 6px 16px;
    margin-bottom: 8px;
    border-bottom: 1px solid #E9E9E9;
  }
  .drawer-logo {
    height: 30px;
    width: auto;
  }
  .drawer-head-title {
    flex: 1;
    font-size: 1.05rem;
    font-weight: 700;
    color: #293340;
  }
  .drawer-close {
    width: 36px;
    height: 36px;
    border: none;
    border-radius: 10px;
    background: #EAF5F4;
    color: #3D8487;
    font-size: 1.5rem;
    line-height: 1;
    cursor: pointer;
    transition: background 0.2s ease, transform 0.2s ease;
  }
  .drawer-close:hover {
    background: #449396;
    color: #FFFFFF;
    transform: rotate(90deg);
  }

  .header .mobile-drawer .navbar-nav {
    flex-direction: column;
    align-items: stretch;
    margin: 0;
    width: 100%;
  }
  .header .mobile-drawer .nav-item {
    margin: 2px 0;
    padding: 0;
  }
  .header .navbar .mobile-drawer .nav-item .nav-link {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 13px 16px;
    font-size: 1rem;
    font-weight: 600;
    color: #2B323C;
    border-radius: 10px;
    transition: background 0.2s ease, color 0.2s ease;
  }
  .header .navbar .mobile-drawer .nav-item .nav-link:hover,
  .header .navbar .mobile-drawer .nav-item .nav-link:focus,
  .header .navbar .mobile-drawer .nav-item .nav-link.active,
  .header .navbar .mobile-drawer .nav-item .nav-link[aria-expanded="true"] {
    color: #3D8487;
    background: #EAF5F4;
  }
  .header .navbar .mobile-drawer .nav-item .nav-link.dropdown-toggle::after {
    color: #3D8487;
    opacity: 0.8;
  }

  .header .navbar .mobile-drawer .nav-item .dropdown-menu {
    position: static;
    box-shadow: none;
    border: none;
    border-left: 3px solid #449396;
    margin: 4px 0 8px 18px;
    padding: 4px 0 4px 8px;
    background: transparent;
    border-radius: 0 10px 10px 0;
  }
  .header .navbar .mobile-drawer .nav-item .dropdown-menu.show {
    display: block;
  }
  .header .navbar .mobile-drawer .nav-item .dropdown-menu .dropdown-item {
    padding: 10px 16px;
    font-size: 0.95rem;
    color: #6B7280;
    border-radius: 8px;
    white-space: normal;
  }
  .header .navbar .mobile-drawer .nav-item .dropdown-menu .dropdown-item:hover,
  .header .navbar .mobile-drawer .nav-item .dropdown-menu .dropdown-item:focus {
    color: #3D8487;
    background: #EAF5F4;
  }
}

/* ====================
   7. Hero Section
   ==================== */

.hero {
  position: relative;
  padding: calc(72px + var(--spacing-2xl)) 0 var(--spacing-2xl);
  background: linear-gradient(135deg, var(--background) 0%, var(--light-blue) 100%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3e%3cg fill='none' fill-rule='evenodd'%3e%3cg fill='%23449396' fill-opacity='0.03'%3e%3cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3e%3c/g%3e%3c/g%3e%3c/svg%3e");
  opacity: 0.5;
}

.hero-badge {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-md);
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--primary-hover);
  background: var(--light-teal);
  border-radius: var(--radius-full);
}

.hero-content {
  position: relative;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  color: var(--dark-navy);
  margin-bottom: var(--spacing-lg);
  line-height: 1.2;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--muted-text);
  margin-bottom: var(--spacing-xl);
  line-height: 1.6;
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* Hero Stats */
.hero-stats {
  display: flex;
  justify-content: center;
  gap: var(--spacing-xl);
  margin-top: var(--spacing-2xl);
  flex-wrap: wrap;
}

.stat-item {
  text-align: center;
  padding: var(--spacing-lg);
  background: var(--card-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  min-width: 150px;
}

.stat-value {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--primary-blue);
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--muted-text);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ====================
   8. Feature Cards
   ==================== */

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-2xl);
}

.feature-card {
  background: var(--card-surface);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
  transition: all 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.feature-icon {
  width: 48px;
  height: 48px;
  background: var(--light-blue);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-md);
}

.feature-icon svg {
  width: 24px;
  height: 24px;
  color: var(--primary-blue);
}

.feature-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--dark-navy);
  margin-bottom: var(--spacing-sm);
}

.feature-description {
  color: var(--muted-text);
  font-size: var(--font-size-base);
}

/* ====================
   8b. Practice Section
   ==================== */

.practice-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-xl);
}

.practice-card {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  padding: var(--spacing-xl);
  background: var(--card-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  text-decoration: none;
  transition: all 0.25s ease;
}

.practice-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-blue);
  text-decoration: none;
}

.practice-icon {
  width: 44px;
  height: 44px;
  margin-bottom: var(--spacing-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-xl);
  color: var(--primary-blue);
  background: var(--light-teal);
  border-radius: var(--radius-md);
}

.practice-title {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--dark-navy);
}

.practice-subtitle {
  font-size: var(--font-size-sm);
  color: var(--muted-text);
}

.practice-card-tutor {
  background: linear-gradient(135deg, var(--light-teal) 0%, var(--card-surface) 100%);
  border-color: var(--light-teal);
}

.practice-card-tutor .practice-icon {
  background: var(--card-surface);
}

#typing-test-section,
#typing-tutor-section {
  scroll-margin-top: 80px;
}

/* ====================
   9. Typing Test Interface
   ==================== */

.typing-test-container {
  margin: 0 auto;
  padding: var(--spacing-lg);
}

.typing-test-header {
  text-align: center;
  margin-bottom: var(--spacing-sm);
}

.typing-test-title {
  font-size: var(--font-size-2xl);
  color: var(--dark-navy);
  margin-bottom: var(--spacing-sm);
}

.typing-test-welcome {
  color: var(--muted-text);
  margin: 0;
  white-space: nowrap;
}

/* Stats Bar */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.stat-card {
  background: var(--card-surface);
  border-radius: var(--radius-lg);
  padding: var(--spacing-sm) var(--spacing-md);
  text-align: center;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
}

.stat-card-label {
  font-size: var(--font-size-sm);
  color: var(--muted-text);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-xs);
}

.stat-card-value {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--dark-navy);
}

.stat-card.gross .stat-card-value { color: var(--primary-blue); }
.stat-card.delete .stat-card-value { color: var(--error); }
.stat-card.backspace .stat-card-value { color: var(--warning); }
.stat-card.time .stat-card-value { color: var(--success); }

/* Passage Display */
.passage-container {
  background: var(--card-surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  border: 2px solid var(--border-color);
  overflow: hidden;
  margin-bottom: var(--spacing-md);
}

.passage-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) var(--spacing-xl);
  background: var(--background);
  border-bottom: 1px solid var(--border-color);
}

.passage-title {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--dark-navy);
}

.passage-toggle-btn {
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: var(--font-size-sm);
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s ease;
}

.passage-toggle-btn:hover {
  background: var(--background);
  border-color: var(--primary-blue);
  color: var(--primary-blue);
}

.passage-text {
  padding: var(--spacing-xl);
  font-size: 1.25rem;
  line-height: 2;
  height: clamp(160px, calc(100vh - 540px), 400px);
  overflow-y: auto;
  user-select: none;
}

.passage-word {
  display: inline-block;
  margin-right: var(--spacing-md);
  padding: 2px 4px;
  border-radius: var(--radius-sm);
  transition: all 0.1s ease;
}

.passage-word.current {
  background: var(--light-blue);
  border-bottom: 2px solid var(--primary-blue);
}

.passage-word.correct {
  color: var(--success);
  background: rgba(111, 165, 107, 0.12);
}

.passage-word.incorrect {
  color: var(--error);
  background: rgba(222, 116, 97, 0.12);
  text-decoration: underline;
}

.passage-word.pending {
  color: var(--muted-text);
}

/* Input Area */
.input-area {
  position: relative;
  margin-bottom: var(--spacing-md);
}

.input-field {
  width: 100%;
  padding: var(--spacing-md);
  font-size: 1.125rem;
  font-family: inherit;
  line-height: 1.4;
  background: var(--card-surface);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  outline: none;
  transition: all 0.2s ease;
}

.input-field:focus {
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 4px rgba(68, 147, 150, 0.1);
}

.input-field::placeholder {
  color: var(--muted-text);
}

/* Settings Panel */
.settings-panel {
  background: var(--card-surface);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
  margin-bottom: var(--spacing-md);
}

.settings-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--dark-navy);
  margin-bottom: var(--spacing-md);
}

.settings-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  /* gap: var(--spacing-md); */
}

.setting-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.setting-label {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--main-text);
}

.setting-options {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.setting-option {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  cursor: pointer;
}

.setting-option input[type="radio"] {
  width: 18px;
  height: 18px;
  accent-color: var(--primary-blue);
}

/* Result Section */
.result-section.visible {
  display: block;
  animation: fadeIn 0.5s ease;
}

.result-section {
  background: var(--card-surface);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
  max-width: 1100px;
  margin: 0 auto;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.result-header {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.result-title {
  font-size: var(--font-size-2xl);
  color: var(--dark-navy);
  margin-bottom: var(--spacing-sm);
}

.result-summary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.result-stat {
  text-align: center;
  padding: var(--spacing-lg);
  background: var(--card-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.result-stat-value {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--primary-blue);
}

.result-stat-label {
  font-size: var(--font-size-sm);
  color: var(--muted-text);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: var(--spacing-xs);
}

.result-details {
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--border-color);
}

.result-details-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--dark-navy);
  margin-bottom: var(--spacing-md);
}

.result-details .table {
  background: var(--card-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.result-details .table td {
  padding: var(--spacing-sm) var(--spacing-md);
  vertical-align: middle;
  border-color: var(--border-color);
}

.result-details .table td:not(.data) {
  font-weight: 600;
  color: var(--dark-navy);
  background: var(--background);
}

.error-list {
  list-style: none;
  /* display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm); */
}

@media (max-width: 576px) {
  .error-list li {
    flex: 1 1 100%;
  }
}

.error-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex: 1 1 200px;
  min-width: 0;
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--background);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
}

.error-list strong {
  color: var(--dark-navy);
}

.error-item {
  padding: var(--spacing-sm) var(--spacing-md);
  background: rgba(222, 116, 97, 0.1);
  border-radius: var(--radius-md);
  color: var(--error);
  font-size: var(--font-size-sm);
}

/* Start Test Form */
.start-test-form {
  max-width: 720px;
  margin: 0 auto;
}

.start-test-card {
  background: var(--card-surface);
  border-radius: var(--radius-xl);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
}

.start-test-title {
  font-size: var(--font-size-xl);
  text-align: center;
  color: var(--dark-navy);
  margin-bottom: var(--spacing-md);
}

.start-test-form .form-group {
  margin-bottom: var(--spacing-sm);
}

.start-test-form .form-label {
  font-weight: 600;
  color: var(--dark-navy);
  margin-bottom: var(--spacing-xs);
}

.start-test-form .form-control:focus {
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 3px rgba(68, 147, 150, 0.15);
}

/* ====================
   10. Lesson Grid
   ==================== */

.lesson-grid-section {
  margin-top: var(--spacing-xl);
}

.lesson-grid-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--card-surface);
  background: var(--primary-blue);
  padding: var(--spacing-md) var(--spacing-lg);
  display: inline-block;
}

.lesson-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.lesson-grid-item {
  background: var(--card-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
  transition: all 0.3s ease;
}

.lesson-grid-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-blue);
}

.lesson-grid-link {
  display: flex;
  align-items: center;
  padding: var(--spacing-lg);
  text-decoration: none;
  color: var(--main-text);
}

.lesson-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: var(--primary-blue);
  color: #FFFFFF;
  font-weight: 700;
  font-size: var(--font-size-lg);
  border-radius: var(--radius-full);
  margin-right: var(--spacing-md);
  flex-shrink: 0;
}

.lesson-title {
  flex: 1;
  font-size: var(--font-size-base);
  font-weight: 500;
}

/* ====================
   11. Footer
   ==================== */

.footer {
  background: var(--dark-navy);
  color: #FFFFFF;
  padding: var(--spacing-2xl) 0 var(--spacing-lg);
  margin-top: var(--spacing-2xl);
}

.footer-content {
  padding-bottom: var(--spacing-xl);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-logo {
  display: flex;
  align-items: center;
  margin-bottom: var(--spacing-md);
}

.footer-logo img {
  height: 40px;
  width: auto;
  margin-right: var(--spacing-sm);
}

.footer-logo span {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: #FFFFFF;
}

.footer-about {
  color: rgba(255, 255, 255, 0.7);
  margin-top: var(--spacing-md);
  max-width: 400px;
}

.footer-column-title {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: #FFFFFF;
  margin-bottom: var(--spacing-md);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--spacing-sm);
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: #FFFFFF;
}

.footer-bar {
  padding-top: var(--spacing-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.footer-copyright {
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--font-size-sm);
}

/* ====================
   12. Utility Classes
   ==================== */

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }

.p-1 { padding: var(--spacing-sm); }
.p-2 { padding: var(--spacing-md); }
.p-3 { padding: var(--spacing-lg); }
.p-4 { padding: var(--spacing-xl); }

.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-xl { box-shadow: var(--shadow-xl); }

.rounded { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }

/* ====================
   13. Responsive Adjustments
   ==================== */

@media (max-width: 768px) {
  :root {
    --spacing-2xl: 2rem;
  }
  
  .hero {
    padding: calc(72px + var(--spacing-lg)) 0 var(--spacing-lg);
  }
  
  .typing-test-container {
    padding: var(--spacing-md);
  }
  
  .passage-text {
    font-size: 1rem;
    padding: var(--spacing-lg);
  }
  
  .stats-bar {
    grid-template-columns: repeat(2, 1fr);
  }

  .settings-grid {
    grid-template-columns: 1fr;
  }

  .result-summary {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .practice-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .footer-bar {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 576px) {
  .stats-bar {
    grid-template-columns: 1fr;
  }
  
  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .practice-grid {
    grid-template-columns: 1fr;
  }
  
  .btn {
    width: 100%;
  }
}
.error-list li {
 margin-bottom: 10px;
}
#navbarToggler {
  position: absolute;
  right: 0px;
}
.tut-intro h1,.tut-intro h2 {
	background: #449396;
	padding: 14px 28px;
	text-align: left;
	margin-bottom: 24px !important;
  font-size: 1.35rem;
    font-weight: 600;
    color: #ffffff;
    margin: 0;
    width: 100%;
}