/* DevUtilsHub - Premium Modern SaaS Design System */

/* ========================================
   COLOR PALETTE & CSS VARIABLES
   ======================================== */
:root {
  /* Primary Colors */
  --primary-blue: #2563EB;
  --primary-blue-hover: #1D4ED8;
  --primary-blue-light: #EFF6FF;
  
  /* Secondary */
  --secondary-dark: #0F172A;
  --secondary-dark-hover: #1E293B;
  
  /* Neutrals */
  --white: #FFFFFF;
  --background: #FFFFFF;
  --background-alt: #F8FAFC;
  --background-secondary: #F1F5F9;
  
  /* Text */
  --text-primary: #0F172A;
  --text-secondary: #475569;
  --text-tertiary: #64748B;
  --text-light: #94A3B8;
  
  /* Borders */
  --border-color: #E2E8F0;
  --border-color-light: #F1F5F9;
  
  /* Status Colors */
  --success: #16A34A;
  --success-light: #DCFCE7;
  --error: #DC2626;
  --error-light: #FEE2E2;
  --warning: #F59E0B;
  --warning-light: #FEF3C7;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07), 0 2px 4px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1), 0 4px 6px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1), 0 10px 10px rgba(0, 0, 0, 0.04);
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  
  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ========================================
   GLOBAL STYLES
   ======================================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
    sans-serif;
  font-size: 1rem;
  line-height: 1.5;
  color: var(--text-primary);
  background-color: var(--background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

/* ========================================
   TYPOGRAPHY
   ======================================== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

h1 {
  font-size: 3rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

h3 {
  font-size: 1.5rem;
  font-weight: 600;
}

h4 {
  font-size: 1.25rem;
  font-weight: 600;
}

h5 {
  font-size: 1.125rem;
  font-weight: 600;
}

h6 {
  font-size: 1rem;
  font-weight: 600;
}

p {
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

small {
  font-size: 0.875rem;
  color: var(--text-tertiary);
}

/* ========================================
   LAYOUT UTILITIES
   ======================================== */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.container-sm {
  max-width: 640px;
}

.container-md {
  max-width: 768px;
}

.container-lg {
  max-width: 1024px;
}

.container-xl {
  max-width: 1280px;
}

.flex {
  display: flex;
}

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

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

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

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

.gap-sm {
  gap: var(--spacing-sm);
}

.gap-md {
  gap: var(--spacing-md);
}

.gap-lg {
  gap: var(--spacing-lg);
}

/* ========================================
   HEADER / NAVIGATION
   ======================================== */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--white);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 0;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}

.navbar-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
}

.navbar-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-hover));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 700;
  font-size: 1rem;
}

.navbar-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.navbar-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color var(--transition-fast);
}

.navbar-link:hover {
  color: var(--primary-blue);
}

.navbar-link.active {
  color: var(--primary-blue);
}

/* Navbar Submenu Styling */
.navbar-submenu {
  position: absolute;
  top: 100%;
  left: 0;
  background-color: var(--white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  list-style: none;
  min-width: 200px;
  padding: 0.5rem 0;
  margin-top: 0;
  box-shadow: var(--shadow-md);
  display: none;
  flex-direction: column;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-fast), visibility var(--transition-fast);
}

.navbar-submenu::before {
  content: '';
  position: absolute;
  top: -8px;
  left: 0;
  right: 0;
  height: 8px;
}

.navbar-links > li {
  position: relative;
}

.navbar-links > li:hover .navbar-submenu,
.navbar-links > li:focus-within .navbar-submenu,
.navbar-links > li.navbar-dropdown-open .navbar-submenu {
  display: flex;
  opacity: 1;
  visibility: visible;
}

.navbar-submenu li {
  margin: 0;
}

.navbar-submenu .navbar-link {
  display: block;
  padding: 0.5rem 1rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  white-space: nowrap;
}

.navbar-submenu .navbar-link:hover {
  background-color: var(--background-alt);
  color: var(--primary-blue);
}

/* Mobile menu toggle */
.navbar-toggle {
  display: none;
  flex-direction: column;
  gap: 0.35rem;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.navbar-toggle span {
  width: 24px;
  height: 2px;
  background-color: var(--text-primary);
  border-radius: 1px;
  transition: all var(--transition-base);
}

/* ========================================
   HERO SECTION
   ======================================== */
.hero {
  padding: 4rem 0;
  background: linear-gradient(180deg, var(--white) 0%, var(--background-alt) 100%);
}

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

.hero-title {
  font-size: 3.5rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  line-height: 1.6;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ========================================
   SEARCH / FILTER
   ======================================== */
.search-box {
  max-width: 500px;
  margin: 2rem auto;
  padding: 0 var(--spacing-md);
}

.search-input {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  font-size: 1rem;
  background-color: var(--white);
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

.search-input:focus {
  outline: none;
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 3px var(--primary-blue-light);
}

.search-input::placeholder {
  color: var(--text-tertiary);
}

/* ========================================
   BUTTONS
   ======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: var(--radius-lg);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--primary-blue);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  background-color: var(--primary-blue-hover);
  box-shadow: var(--shadow-lg);
  transform: translateY(-1px);
}

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

.btn-secondary {
  background-color: var(--background-alt);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background-color: var(--background-secondary);
  border-color: var(--text-tertiary);
}

.btn-ghost {
  background-color: transparent;
  color: var(--primary-blue);
  border: 1px solid var(--primary-blue);
}

.btn-ghost:hover {
  background-color: var(--primary-blue-light);
}

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

.btn-success:hover {
  background-color: #15803d;
}

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

.btn-error:hover {
  background-color: #b91c1c;
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1.125rem;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

/* ========================================
   CARDS & GRIDS
   ======================================== */
.grid {
  display: grid;
  gap: 1.5rem;
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.card {
  background-color: var(--white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 2rem;
  transition: all var(--transition-base);
  cursor: pointer;
}

.card:hover {
  border-color: var(--primary-blue);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.card-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.card-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--primary-blue-light), #DBEAFE);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.card-description {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.5;
}

.card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* ========================================
   FORMS & INPUTS
   ======================================== */
.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.95rem;
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  font-size: 1rem;
  color: var(--text-primary);
  background-color: var(--white);
  font-family: inherit;
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 3px var(--primary-blue-light);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--text-tertiary);
}

.form-textarea {
  min-height: 150px;
  resize: vertical;
  font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
}

.form-helper {
  font-size: 0.875rem;
  color: var(--text-tertiary);
  margin-top: 0.5rem;
}

/* ========================================
   ALERTS & MESSAGES
   ======================================== */
.alert {
  padding: 1rem;
  border-radius: var(--radius-lg);
  margin-bottom: 1rem;
  border-left: 4px solid;
}

.alert-success {
  background-color: var(--success-light);
  border-color: var(--success);
  color: #166534;
}

.alert-error {
  background-color: var(--error-light);
  border-color: var(--error);
  color: #991b1b;
}

.alert-warning {
  background-color: var(--warning-light);
  border-color: var(--warning);
  color: #b45309;
}

.alert-info {
  background-color: var(--primary-blue-light);
  border-color: var(--primary-blue);
  color: #1e40af;
}

/* ========================================
   CONTENT LAYOUT
   ======================================== */
.content {
  padding: 3rem 0;
}

.content-box {
  background-color: var(--background-alt);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 2rem;
}

.content-box-large {
  background-color: var(--white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
}

.code-block {
  background-color: #1e293b;
  color: #e2e8f0;
  padding: 1.5rem;
  border-radius: var(--radius-lg);
  font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
  font-size: 0.875rem;
  overflow-x: auto;
  margin: 1rem 0;
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
  background-color: var(--background-alt);
  border-top: 1px solid var(--border-color);
  padding: 3rem 0 1.5rem;
  margin-top: 4rem;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-column h3 {
  font-size: 0.95rem;
  margin-bottom: 1rem;
  font-weight: 600;
}

.footer-column ul {
  list-style: none;
}

.footer-column li {
  margin-bottom: 0.75rem;
}

.footer-column a {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.footer-column a:hover {
  color: var(--primary-blue);
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  color: var(--text-tertiary);
  font-size: 0.9rem;
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */
@media (max-width: 768px) {
  .navbar-links {
    display: none;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background-color: var(--white);
    flex-direction: column;
    gap: 0;
    border-bottom: 1px solid var(--border-color);
  }

  .navbar-links.active {
    display: flex;
  }

  .navbar-link {
    padding: 1rem var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
  }

  .navbar-submenu {
    position: static;
    box-shadow: none;
    border: none;
    border-radius: 0;
    padding: 0;
    margin: 0;
    min-width: auto;
    opacity: 1;
    visibility: visible;
    display: none;
  }

  .navbar-submenu::before {
    display: none;
  }

  .navbar-links > li:hover .navbar-submenu,
  .navbar-links > li:focus-within .navbar-submenu {
    display: none;
  }

  .navbar-links > li.navbar-dropdown-open .navbar-submenu {
    display: flex;
  }

  .navbar-submenu .navbar-link {
    padding-left: 2rem;
    font-size: 0.875rem;
  }

  .navbar-toggle {
    display: flex;
  }

  .tool-workspace {
    grid-template-columns: 1fr;
  }

  .tool-description {
    display: none;
  }

  .tool-title {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  .hero-title {
    font-size: 2rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .hero-cta {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    max-width: 300px;
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .card {
    padding: 1.5rem;
  }

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

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ========================================
   UTILITY TOOL SPECIFIC STYLES
   ======================================== */
.tool-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.25rem var(--spacing-md) 2rem;
}

.tool-workspace {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  align-items: start;
  margin-bottom: 1.5rem;
}

.tool-workspace .tool-section {
  margin-bottom: 0;
}

.tool-workspace-col {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.tool-workspace .tool-input-area,
.tool-workspace .tool-output-area {
  min-height: 280px;
}

.tool-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
  min-height: 0;
}

.tool-icon {
  width: 36px;
  height: 36px;
  min-width: 36px;
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-hover));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0;
  font-size: 1.125rem;
  color: white;
  box-shadow: var(--shadow-sm);
}

.tool-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin: 0;
  white-space: nowrap;
  line-height: 1.2;
}

.tool-description {
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
  min-width: 0;
  line-height: 1.2;
}

.tool-description::before {
  content: '— ';
  color: var(--text-tertiary);
}

.tool-section {
  background-color: var(--white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 2rem;
  margin-bottom: 1.5rem;
}

.tool-section-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
}

.tool-input-area {
  min-height: 200px;
  padding: 1rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  background-color: var(--background-alt);
  font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
  font-size: 0.9rem;
  color: var(--text-primary);
  resize: vertical;
}

.tool-output-area {
  background-color: var(--background-alt);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  min-height: 150px;
  overflow-x: auto;
}

.tool-output-text {
  font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
  font-size: 0.9rem;
  color: var(--text-primary);
  word-break: break-all;
  white-space: pre-wrap;
}

.tool-buttons {
  display: flex;
  gap: 1rem;
  margin-top: 1.5rem;
  flex-wrap: wrap;
}

.tool-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}

.stat-card {
  background-color: var(--background-alt);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1rem;
  text-align: center;
}

.stat-label {
  font-size: 0.875rem;
  color: var(--text-tertiary);
  margin-bottom: 0.5rem;
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

/* ========================================
   FAQ SECTION
   ======================================== */
.faq-section {
  max-width: 800px;
  margin: 3rem auto 0;
}

.faq-title {
  text-align: center;
  margin-bottom: 2rem;
  font-size: 1.75rem;
}

.faq-item {
  background-color: var(--white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  margin-bottom: 1rem;
  overflow: hidden;
  transition: all var(--transition-base);
}

.faq-item:hover {
  border-color: var(--primary-blue);
}

.faq-question {
  padding: 1.5rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  color: var(--text-primary);
  user-select: none;
}

.faq-question:hover {
  background-color: var(--background-alt);
}

.faq-toggle {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-blue);
  font-size: 1.25rem;
  transition: transform var(--transition-fast);
}

.faq-item.active .faq-toggle {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow);
  border-top: 1px solid var(--border-color);
}

.faq-item.active .faq-answer {
  max-height: 500px;
  padding: 1.5rem;
}

.faq-answer-text {
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ========================================
   ANIMATIONS & TRANSITIONS
   ======================================== */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateX(-10px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.fade-in {
  animation: fadeIn var(--transition-base) ease-out;
}

.slide-in {
  animation: slideIn var(--transition-base) ease-out;
}

/* ========================================
   UTILITY CLASSES
   ======================================== */
.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); }

.px-2 { padding-left: var(--spacing-md); padding-right: var(--spacing-md); }
.py-2 { padding-top: var(--spacing-md); padding-bottom: var(--spacing-md); }
.p-2 { padding: var(--spacing-md); }

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

.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }
.font-medium { font-weight: 500; }

.text-sm { font-size: 0.875rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }

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

.text-blue { color: var(--primary-blue); }
.text-green { color: var(--success); }
.text-red { color: var(--error); }

.opacity-50 { opacity: 0.5; }
.opacity-75 { opacity: 0.75; }

.w-full { width: 100%; }
.h-auto { height: auto; }

.inline-block { display: inline-block; }
.block { display: block; }

.hidden { display: none; }