/* ==========================================================================
   Enhanced Stylesheet - Compatible with Separate Dark Mode
   ========================================================================== */

/* CSS Variables - Light Theme Base
   -------------------------------------------------------------------------- */


html,
body {
  overscroll-behavior: none;
  -webkit-overflow-scrolling: touch;
  transform: translate3d(0, 0, 0);
}

@media (max-width: 768px) {

  /* Disable transforms on mobile */
  * {
    transform: none !important;
  }

  /* Disable backdrop filters on mobile */
  .navbar {
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
  }
}

:root {
  /* Light Theme Colors */
  --primary-color: #2563eb;
  --primary-hover: #1d4ed8;
  --secondary-color: #64748b;
  --secondary-hover: #475569;
  --accent-color: #0ea5e9;
  --accent-hover: #0284c7;
  --danger-color: #e11d48;
  --danger-hover: #be123c;
  --success-color: #059669;
  --success-hover: #047857;
  --warning-color: #d97706;
  --warning-hover: #b45309;

  /* Light Theme Backgrounds */
  --background-color: #f8fafc;
  --surface-color: #ffffff;
  --surface-alternate-color: #f3f6fa;

  /* Light Theme Text */
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-inverted: #ffffff;

  /* Borders & Shadows */
  --border-color: #e2e8f0;
  --shadow-light: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --shadow-medium: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-large: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);

  /* Sizing & Layout */
  --navbar-height: 70px;
  --border-radius: 12px;
  --border-radius-sm: 6px;
  --border-radius-lg: 16px;
  --container-max-width: 1200px;
  --content-padding: 2rem;
  --content-padding-sm: 1rem;

  /* Transitions & Animations */
  --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);

  /* Typography Scale */
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  --font-size-6xl: 3.75rem;

  /* Spacing Scale */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
  :root {
    --transition-fast: none;
    --transition: none;
    --transition-slow: none;
  }

  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ==========================================================================
     1. Base Styles - Enhanced
     ========================================================================== */

/* Reset & Body */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

*:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--background-color);
  min-height: 100vh;
  font-size: var(--font-size-base);
  margin-bottom: 2rem;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ==========================================================================
     2. Layout - Enhanced
     ========================================================================== */

.tutoring-day h3 {
  margin: 2rem 0;
}
/* Container */
.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--content-padding-sm);
  display: flex;
  flex-direction: column;
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--content-padding);
  }

  .data-table tr:hover td {
    background: rgba(37, 99, 235, 0.1) !important;
    color: var(--text-primary) !important;
    transition: var(--transition-fast);
  }
}

/* Header */
.header {
  text-align: center;
  padding: var(--space-10) 0;
}

.main-title {
  font-size: clamp(var(--font-size-4xl), 5vw, var(--font-size-6xl));
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-1);
  background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}

.page-title {
  font-size: clamp(var(--font-size-3xl), 4vw, var(--font-size-4xl));
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
  text-align: center;
  line-height: 1.3;
}

.breadcrumb {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.breadcrumb a {
  color: var(--primary-color);
  text-decoration: none;
  transition: var(--transition-fast);
}

.breadcrumb a:hover,
.breadcrumb a:focus {
  color: var(--primary-hover);
  text-decoration: underline;
}

/* Main Content */
.main-content {
  flex: 1;
  padding: var(--space-10) 0;
}

/* Footer */
.footer {
  text-align: center;
  padding: var(--space-10) 0;
  border-top: 1px solid var(--border-color);
  margin-top: auto;
}

.footer p {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

/* ==========================================================================
     3. Reusable Components - Enhanced
     ========================================================================== */

/* Enhanced Button System */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--border-radius-sm);
  text-decoration: none;
  font-weight: 500;
  font-size: var(--font-size-sm);
  transition: var(--transition-fast);
  border: none;
  cursor: pointer;
  box-shadow: var(--shadow-light);
  color: var(--text-inverted);
  white-space: nowrap;
  user-select: none;
  position: relative;
  overflow: hidden;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none !important;
}

.btn:not(:disabled):hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-medium);
}

.btn:not(:disabled):active {
  transform: translateY(0);
}

/* Button Variants */
.btn-primary {
  background: var(--primary-color);
}

.btn-primary:hover:not(:disabled) {
  background: var(--primary-hover);
}

.btn-secondary {
  background: var(--secondary-color);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--secondary-hover);
}

.btn-accent {
  background: var(--accent-color);
}

.btn-accent:hover:not(:disabled) {
  background: var(--accent-hover);
}

.btn-danger {
  background: var(--danger-color);
}

.btn-danger:hover:not(:disabled) {
  background: var(--danger-hover);
}

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

.btn-success:hover:not(:disabled) {
  background: var(--success-hover);
}

.btn-warning {
  background: var(--warning-color);
}

.btn-warning:hover:not(:disabled) {
  background: var(--warning-hover);
}

/* Button Sizes */
.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-xs);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--font-size-lg);
}

/* Button Outline Variants */
.btn-outline {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  box-shadow: none;
}

.btn-outline:hover:not(:disabled) {
  background: var(--surface-alternate-color);
  border-color: var(--primary-color);
}

/* Cards - Enhanced */
.cta-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-8);
  margin-bottom: var(--space-16);
}

.cta-card {
  background: var(--surface-color);
  border-radius: var(--border-radius);
  padding: var(--space-10) var(--space-8);
  text-align: center;
  box-shadow: var(--shadow-light);
  border: 1px solid var(--border-color);
  transition: var(--transition);
  position: relative;
  overflow: visible;
}

.cta-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
  border-radius: var(--border-radius) var(--border-radius) 0 0;
  transform: scaleX(0);
  transition: var(--transition);
}

.cta-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-large);
}

.cta-card:hover::before {
  transform: scaleX(1);
}

.cta-icon {
  font-size: var(--font-size-5xl);
  margin-bottom: var(--space-6);
  display: block;
}

.cta-card h2 {
  font-size: var(--font-size-2xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
}

.cta-card p {
  color: var(--text-secondary);
  margin-bottom: var(--space-8);
  line-height: 1.7;
}

/* Data Table - Enhanced */
.data-table-wrapper {
  overflow-x: auto;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-light);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface-color);
  border-radius: var(--border-radius);
  overflow: hidden;
  table-layout: auto;
  font-size: var(--font-size-sm);
}

.data-table th,
.data-table td {
  padding: var(--space-4);
  text-align: center;
  vertical-align: middle;
  white-space: normal;
}

.data-table th {
  background: var(--surface-alternate-color);
  color: var(--primary-color);
  font-weight: 600;
  border-bottom: 2px solid var(--border-color);
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.data-table td {
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-color);
  background: var(--surface-color);
}

.data-table tr:nth-child(even) td {
  background: var(--surface-alternate-color);
}


/* Navbar - Enhanced */
.navbar {
  background: var(--surface-color);
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-light);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.nav-container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--space-5);
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: var(--navbar-height);
  flex-wrap: nowrap;
}

.nav-logo {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--primary-color);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  white-space: nowrap;
  flex-shrink: 0;
  transition: var(--transition-fast);
}

.nav-logo:hover,
.nav-logo:focus {
  color: var(--primary-hover);
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--space-8);
  align-items: center;
  margin-left: auto;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--border-radius-sm);
  transition: var(--transition-fast);
  position: relative;
  white-space: nowrap;
  font-size: var(--font-size-sm);
}

.nav-link:hover,
.nav-link:focus {
  color: var(--primary-color);
  background: rgba(37, 99, 235, 0.1);
}

.nav-link.active {
  color: var(--primary-color);
  background: rgba(37, 99, 235, 0.1);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: var(--space-4);
  right: var(--space-4);
  height: 2px;
  background: var(--primary-color);
  border-radius: 1px;
}

/* Theme Toggle - Enhanced */
#theme-toggle {
  background: none;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  font-size: var(--font-size-xl);
  padding: var(--space-2);
  border-radius: var(--border-radius-sm);
  transition: var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  margin: 0rem 0.8rem;
}

#theme-toggle:hover,
#theme-toggle:focus {
  background: rgba(37, 99, 235, 0.1);
  transform: scale(1.05);
}

/* Mobile Navigation - Enhanced */
.nav-toggle {
  display: none;
  flex-direction: column;
  cursor: pointer;
  padding: var(--space-1);
  border-radius: var(--border-radius-sm);
  transition: var(--transition-fast);
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
}

.nav-toggle:hover {
  background: var(--surface-alternate-color);
}

.nav-toggle span {
  width: 25px;
  height: 3px;
  background: var(--text-primary);
  margin: 3px 0;
  transition: var(--transition-fast);
  border-radius: 2px;
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

/* Badge - Enhanced */
.status-badge {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  border-radius: 999px;
  font-size: var(--font-size-xs);
  font-weight: 500;
  letter-spacing: 0.05em;
  min-width: 70px;
  text-align: center;
  text-transform: uppercase;
}

.status-past {
  background: var(--border-color);
  color: var(--text-secondary);
}

.status-ongoing {
  background: var(--accent-color);
  color: var(--text-inverted);
}

.status-upcoming {
  background: var(--primary-color);
  color: var(--text-inverted);
}

/* Search - Enhanced and Consolidated */
.search-container {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-left: var(--space-5);
  flex-shrink: 0;
  height: 40px;
  flex-wrap: nowrap;
}

#search-input {
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-base); /* Prevents iOS auto-zoom on focus */
  width: 200px;
  height: 40px;
  box-sizing: border-box;
  transition: var(--transition-fast);
  flex-shrink: 0;
  min-width: 150px;
  background: var(--surface-color);
  color: var(--text-primary);
}

#search-input:focus {
  outline: none;
  border-color: var(--primary-color);
  width: 250px;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

#search-input::placeholder {
  color: var(--text-secondary);
}

/* Consolidated Search Button Styles */
#search-close,
#search-toggle {
  background: var(--primary-color);
  color: var(--text-inverted);
  border: 1px solid var(--primary-color);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  font-size: var(--font-size-sm);
  height: 40px;
  box-sizing: border-box;
  min-width: 40px;
  flex-shrink: 0;
  transition: var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

#search-close:hover,
#search-close:focus,
#search-toggle:hover,
#search-toggle:focus {
  background: var(--primary-hover);
  transform: translateY(-1px);
}

#search-toggle {
  margin-left: var(--space-5);
}

/* ==========================================================================
     4. Page-Specific Styles - Enhanced
     ========================================================================== */

/* Content Section */
.content-section {
  margin-bottom: var(--space-12);
  background: var(--surface-color);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-light);
  padding: var(--space-8) var(--space-6);
  border: 1px solid var(--border-color);
  position: relative;
}

.content-section-title {
  font-size: var(--font-size-4xl);
  font-weight: 600;
  color: var(--primary-color);
  margin-bottom: var(--space-5);
  letter-spacing: -0.025em;
  text-align: center;
  line-height: 1.2;
}

.content-section-subtitle {
  font-size: var(--font-size-xl);
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: var(--space-3);
  margin-top: var(--space-3);
  text-align: center;
  line-height: 1.3;
}

/* Pinned Items - Enhanced */
.pin-column {
  width: 40px;
  max-width: 40px;
}

.pin-cell {
  text-align: center;
  padding-left: var(--space-1) !important;
  padding-right: var(--space-1) !important;
  width: 40px;
  max-width: 40px;
}

.pin-button {
  background: none;
  border: none;
  cursor: pointer;
  font-size: var(--font-size-sm);
  padding: var(--space-1);
  opacity: 0.5;
  transition: var(--transition-fast);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: var(--border-radius-sm);
}

.pin-button:hover,
.pin-button:focus {
  opacity: 1;
  transform: scale(1.1);
  background: var(--surface-alternate-color);
}

.pin-button.pinned {
  opacity: 1;
  transform: rotate(-45deg);
  color: var(--primary-color);
}

.pinned-section {
  border: 2px solid var(--primary-color);
  background-color: rgba(37, 99, 235, 0.05);
}

.pinned-controls {
  display: flex;
  justify-content: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  width: 100%;
}

/* Coming Soon Page - Enhanced */
.coming-soon-content {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 60vh;
  padding: var(--space-10) 0;
}

.coming-soon-card {
  background: var(--surface-color);
  border-radius: var(--border-radius-lg);
  padding: var(--space-16) var(--space-10);
  text-align: center;
  box-shadow: var(--shadow-medium);
  border: 1px solid var(--border-color);
  max-width: 600px;
  width: 100%;
}

.coming-soon-icon {
  font-size: var(--font-size-6xl);
  margin-bottom: var(--space-8);
  display: block;
}

.coming-soon-card h2 {
  font-size: var(--font-size-4xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-6);
  line-height: 1.2;
}

.coming-soon-card p {
  color: var(--text-secondary);
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-10);
  line-height: 1.7;
}

/* ==========================================================================
     5. Responsive Design - Enhanced
     ========================================================================== */

@media (max-width: 1100px) and (min-width: 951px) {
  .nav-container {
    padding: 0 var(--space-3);
  }

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

  .search-container {
    margin-right: var(--space-3);
  }

  #search-input {
    width: 150px;
  }

  #search-input:focus {
    width: 180px;
  }
}

@media (max-width: 950px) {
  .search-container {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--surface-color);
    padding: var(--space-4) var(--space-5);
    box-shadow: var(--shadow-medium);
    z-index: 1000;
    height: auto;
    display: flex;
    align-items: center;
    flex-direction: row;
    justify-content: center;
    max-width: 350px;
    margin: var(--space-3) auto;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
  }

  #search-input {
    width: calc(100% - 50px);
    margin-bottom: 0;
  }
  
}

@media (max-width: 768px) {
  .container {
    padding: 0 var(--space-4);
  }

  .main-title {
    font-size: clamp(var(--font-size-3xl), 6vw, var(--font-size-4xl));
  }

  .page-title {
    font-size: clamp(var(--font-size-2xl), 5vw, var(--font-size-3xl));
  }

  .header {
    padding: var(--space-10) 0 var(--space-8);
  }

  /* Mobile Nav */
  .nav-toggle {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: var(--navbar-height);
    left: -100%;
    width: 100%;
    height: calc(100vh - var(--navbar-height));
    background: var(--surface-color);
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    padding-top: var(--space-10);
    gap: var(--space-6);
    transition: var(--transition);
    border-top: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
  }

  .nav-menu.active {
    left: 0;
  }

  .nav-link {
    font-size: var(--font-size-lg);
    padding: var(--space-3) var(--space-6);
  }

  /* Cards */
  .cta-grid {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }

  .cta-card {
    padding: var(--space-8) var(--space-6);
  }

  .cta-card:hover::before {
    display: none;
  }

  .cta-card:hover {
    transform: none;
    box-shadow: var(--shadow-light);
  }

  .coming-soon-card {
    padding: var(--space-10) var(--space-6);
    margin: 0 var(--space-4);
  }

  /* Content Sections & Tables */
  .content-section {
    padding: var(--space-5) var(--space-2);
  }

  .content-section-title {
    font-size: var(--font-size-2xl);
  }

  .content-section-subtitle {
    font-size: var(--font-size-lg);
  }

  .data-table th,
  .data-table td {
    padding: var(--space-3) var(--space-2);
    width: auto !important;
    font-size: clamp(var(--font-size-xs), 2.5vw, var(--font-size-sm));
    line-height: 1.4;
  }
}

@media (max-width: 480px) {
  .main-title {
    font-size: clamp(var(--font-size-2xl), 7vw, var(--font-size-3xl));
  }

  .cta-card {
    padding: var(--space-6) var(--space-5);
  }

  .coming-soon-card {
    padding: var(--space-8) var(--space-5);
  }

  .container {
    padding: 0 var(--space-3);
  }
}

/* ==========================================================================
     6. Summer Exams Page - Enhanced
     ========================================================================== */

.exam-schedule .data-table .data-table-wrapper {
  table-layout: fixed;
  width: 100%;
}

.exam-schedule .data-table th:nth-child(1),
.exam-schedule .data-table td:nth-child(1) {
  width: 8%;
}

.exam-schedule .data-table th:nth-child(2),
.exam-schedule .data-table td:nth-child(2) {
  width: 20%;
}

.exam-schedule .data-table th:nth-child(3),
.exam-schedule .data-table td:nth-child(3) {
  width: 12%;
}

.exam-schedule .data-table th:nth-child(4),
.exam-schedule .data-table td:nth-child(4) {
  width: 45%;
}

.exam-schedule .data-table th:nth-child(5),
.exam-schedule .data-table td:nth-child(5) {
  width: 15%;
}

/* ==========================================================================
     7. Tutoring Page - Enhanced
     ========================================================================== */

.schedule-controls {
  display: flex;
  justify-content: flex-end;
  margin-bottom: var(--space-4);
}

#today-filter-btn {
  display: block;
  margin: 0 0 var(--space-4) auto;
  background: var(--secondary-color);
  color: var(--text-inverted);
  border: none;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  font-size: var(--font-size-sm);
  font-weight: 500;
  transition: var(--transition-fast);
}

#today-filter-btn:hover,
#today-filter-btn:focus {
  background: var(--secondary-hover);
  transform: translateY(-1px);
}

#today-filter-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none !important;
}

/* ==========================================================================
     8. New Utility Classes
     ========================================================================== */

/* Spacing Utilities */
.mt-auto {
  margin-top: auto;
}

.mb-auto {
  margin-bottom: auto;
}

.ml-auto {
  margin-left: auto;
}

.mr-auto {
  margin-right: auto;
}

/* Text Utilities */
.text-center {
  text-align: center;
}

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

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

.text-primary {
  color: var(--text-primary);
}

.text-secondary {
  color: var(--text-secondary);
}

.text-inverted {
  color: var(--text-inverted);
}

/* Background Utilities */
.bg-surface {
  background-color: var(--surface-color);
}

.bg-surface-alt {
  background-color: var(--surface-alternate-color);
}

/* Border Utilities */
.border {
  border: 1px solid var(--border-color);
}

.border-top {
  border-top: 1px solid var(--border-color);
}

.border-bottom {
  border-bottom: 1px solid var(--border-color);
}

/* Shadow Utilities */
.shadow-light {
  box-shadow: var(--shadow-light);
}

.shadow-medium {
  box-shadow: var(--shadow-medium);
}

.shadow-large {
  box-shadow: var(--shadow-large);
}

/* Flex Utilities */
.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

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

.items-center {
  align-items: center;
}

.justify-center {
  justify-content: center;
}

.justify-between {
  justify-content: space-between;
}

.gap-2 {
  gap: var(--space-2);
}

.gap-4 {
  gap: var(--space-4);
}

/* Grid Utilities */
.grid {
  display: grid;
}

.grid-cols-1 {
  grid-template-columns: repeat(1, 1fr);
}

.grid-cols-2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid-cols-3 {
  grid-template-columns: repeat(3, 1fr);
}

/* Visibility Utilities */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Print Styles */
@media print {

  .navbar,
  .nav-toggle,
  #theme-toggle,
  .search-container,
  .pin-button {
    display: none !important;
  }

  .container {
    max-width: none;
    padding: 0;
  }

  .data-table {
    box-shadow: none;
    border: 1px solid #000;
  }

  .data-table th,
  .data-table td {
    border: 1px solid #000;
  }
}