/* ==========================================================================
   StartMyMeeting - Professional CSS System - v1.2 Updated Header Fix
   ========================================================================== */

/* ==========================================================================
   CSS Reset & Base Styles
   ========================================================================== */

/* Box sizing normalization */
   *,
   *::before,
   *::after {
     box-sizing: border-box;
}

/* Remove default margins and paddings */
* {
     margin: 0;
     padding: 0;
   }
   
/* Prevent font size inflation */
   html {
  -moz-text-size-adjust: none;
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
  scroll-behavior: smooth;
}

/* Remove list styles on ul, ol elements with a list role */
ul[role='list'],
ol[role='list'] {
  list-style: none;
}

/* Set core body defaults */
body {
  min-height: 100vh;
  line-height: 1.5;
     -webkit-font-smoothing: antialiased;
     -moz-osx-font-smoothing: grayscale;
     text-rendering: optimizeLegibility;
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  color: var(--gray-900);
  letter-spacing: -0.01em;
  background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
   }
   
/* Set shorter line heights on headings and interactive elements */
h1, h2, h3, h4,
button, input, label {
  line-height: 1.1;
}

/* Balance text wrapping on headings */
h1, h2,
h3, h4 {
  text-wrap: balance;
}

/* A elements that don't have a class get default styles */
a:not([class]) {
  text-decoration-skip-ink: auto;
  color: currentColor;
   }
   
/* Make images easier to work with */
img,
picture {
  max-width: 100%;
  display: block;
   }
   
/* Inherit fonts for inputs and buttons */
input, button,
textarea, select {
  font: inherit;
}

/* Make sure textareas without a rows attribute are not tiny */
textarea:not([rows]) {
  min-height: 10em;
   }
   
/* Anything that has been anchored to should have extra scroll margin */
:target {
  scroll-margin-block: 5ex;
   }
   
   /* ==========================================================================
   CSS Variables & Design Tokens
      ========================================================================== */
   
   :root {
  /* Colors */
  --primary-50: #f0f4ff;
  --primary-100: #e0e7ff;
  --primary-500: #667eea;
  --primary-600: #5a67d8;
  --primary-700: #4c51bf;
  --primary-900: #2d3748;
     
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
     
  --success-500: #10b981;
  --warning-500: #f59e0b;
  --error-500: #ef4444;
  --info-500: #3b82f6;
     
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-success: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
  --gradient-warning: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
  --gradient-info: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
  --gradient-dark: linear-gradient(135deg, #434343 0%, #000000 100%);
     
  /* Spacing Scale (8px base) */
     --space-1: 0.25rem;   /* 4px */
     --space-2: 0.5rem;    /* 8px */
     --space-3: 0.75rem;   /* 12px */
     --space-4: 1rem;      /* 16px */
     --space-5: 1.25rem;   /* 20px */
     --space-6: 1.5rem;    /* 24px */
     --space-8: 2rem;      /* 32px */
     --space-10: 2.5rem;   /* 40px */
     --space-12: 3rem;     /* 48px */
     --space-16: 4rem;     /* 64px */
     --space-20: 5rem;     /* 80px */
     --space-24: 6rem;     /* 96px */
     
  /* Typography */
  --font-family-base: "Inter", "Helvetica Neue", "Segoe UI", sans-serif;
  --font-family-mono: "SF Mono", "Monaco", "Inconsolata", monospace;
  
  --font-size-xs: 0.75rem;    /* 12px */
  --font-size-sm: 0.875rem;   /* 14px */
  --font-size-base: 1rem;     /* 16px */
  --font-size-lg: 1.125rem;   /* 18px */
  --font-size-xl: 1.25rem;    /* 20px */
  --font-size-2xl: 1.5rem;    /* 24px */
  --font-size-3xl: 1.875rem;  /* 30px */
  --font-size-4xl: 2.25rem;   /* 36px */
  --font-size-5xl: 3rem;      /* 48px */
     
     --font-weight-normal: 400;
     --font-weight-medium: 500;
     --font-weight-semibold: 600;
     --font-weight-bold: 700;
     
     --line-height-tight: 1.25;
     --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-base: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --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);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-premium: 0 20px 40px rgba(0, 0, 0, 0.1);
  
  /* Border Radius */
  --radius-sm: 0.375rem;   /* 6px */
  --radius-base: 0.5rem;   /* 8px */
  --radius-md: 0.75rem;    /* 12px */
  --radius-lg: 1rem;       /* 16px */
  --radius-xl: 1.25rem;    /* 20px */
  --radius-2xl: 1.5rem;    /* 24px */
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;
     
  /* Z-index */
     --z-dropdown: 1000;
     --z-sticky: 1020;
     --z-fixed: 1030;
     --z-modal-backdrop: 1040;
     --z-modal: 1050;
     --z-popover: 1060;
     --z-tooltip: 1070;
     --z-toast: 1080;
}

/* ==========================================================================
   Navigation & Branding
   ========================================================================== */

.navbar {
  background: rgba(255, 255, 255, 0.95) !important;
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow-premium);
  height: 76px; /* Define navbar height for proper spacing */
}

/* Main content padding to prevent overlap with fixed navbar - using broader selector */
main {
  margin-top: 70px !important; /* Simple solution for header spacing - force browser refresh */
  padding-top: 0; /* Ensure no extra padding */
}

/* Special handling for home and dashboard pages (they look good) */
body.home-page main,
body.dashboard-page main {
  margin-top: 0 !important; /* Remove margin for pages that already look good */
}

/* Special handling for timezone page which has its own hero section */
body.timezone-page main {
  margin-top: 0 !important; /* Timezone page has its own full-height layout */
}

/* Clean and simple - no conflicting rules */

/* Flash messages container - ensure it appears above everything */
.flash-messages-container {
  position: fixed;
  top: 80px; /* Just below navbar */
  left: 0;
  right: 0;
  z-index: 9999; /* Very high z-index to ensure visibility above all elements */
  pointer-events: none; /* Allow clicks to pass through container */
  max-width: none; /* Override container max-width for full-width positioning */
}

.flash-messages-container .alert {
  pointer-events: auto; /* But allow clicks on actual alerts */
  margin-bottom: var(--space-2);
  box-shadow: var(--shadow-xl);
  position: relative;
  z-index: 10000; /* Even higher for individual alerts */
  animation: slideInFromTop 0.3s ease-out;
}

/* Animation for flash messages */
@keyframes slideInFromTop {
  0% {
    transform: translateY(-100%);
    opacity: 0;
  }
  100% {
    transform: translateY(0);
    opacity: 1;
  }
}

/* Ensure flash messages work well on mobile */
@media (max-width: 768px) {
  .flash-messages-container {
    top: 70px; /* Slightly closer to navbar on mobile */
    padding: 0 var(--space-4);
  }
  
  .flash-messages-container .alert {
    border-radius: var(--radius-lg);
    font-size: var(--font-size-sm);
  }
}

.navbar-brand {
  font-weight: 700;
  font-size: 1.5rem;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: flex;
  align-items: center;
  text-decoration: none;
}

.navbar-logo {
  height: 28px;
  width: 28px;
  margin-right: 12px;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.footer {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.footer-logo {
  height: 24px;
  width: 24px;
  margin-right: 12px;
  border-radius: 6px;
   }
   
   /* ==========================================================================
   Typography
      ========================================================================== */
   
/* Headings */
h1, h2, h3, h4, h5, h6 {
     font-weight: var(--font-weight-bold);
     line-height: var(--line-height-tight);
     letter-spacing: -0.025em;
  margin-bottom: var(--space-4);
}

h1 {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--space-6);
   }
   
h2 {
     font-size: var(--font-size-3xl);
     margin-bottom: var(--space-5);
   }
   
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);
  font-weight: var(--font-weight-semibold);
}

/* Paragraphs */
p {
     margin-bottom: var(--space-4);
  line-height: var(--line-height-relaxed);
}

p:last-child {
  margin-bottom: 0;
   }
   
/* Links */
a {
  color: var(--primary-600);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--primary-700);
  text-decoration: underline;
}
   
/* Small text */
small {
  font-size: var(--font-size-sm);
  color: var(--gray-600);
}

.text-muted {
  color: var(--gray-500) !important;
}
   
   /* ==========================================================================
      Layout System
      ========================================================================== */
   
/* Container */
   .container {
     width: 100%;
     max-width: 1200px;
     margin-left: auto;
     margin-right: auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

@media (min-width: 640px) {
  .container {
     padding-left: var(--space-6);
     padding-right: var(--space-6);
   }
}

@media (min-width: 1024px) {
  .container {
    padding-left: var(--space-8);
    padding-right: var(--space-8);
  }
   }
   
   /* Grid System */
   .grid {
     display: grid;
  gap: var(--space-4);
   }
   
   .grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
   .grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
   .grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
   .grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

@media (min-width: 768px) {
  .md\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .md\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .md\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}
   
   /* ==========================================================================
   Components
      ========================================================================== */
   
/* Buttons */
   .btn {
     display: inline-flex;
     align-items: center;
     justify-content: center;
  padding: var(--space-3) var(--space-6);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  line-height: 1;
     border: 1px solid transparent;
     border-radius: var(--radius-lg);
     cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
     white-space: nowrap;
  user-select: none;
  letter-spacing: 0.02em;
   }
   
   .btn:focus {
  outline: 2px solid transparent;
  outline-offset: 2px;
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
   }
   
   .btn:disabled {
     opacity: 0.5;
     cursor: not-allowed;
     pointer-events: none;
   }
   
   /* Button Variants */
   .btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
   }
   
   .btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(102, 126, 234, 0.6);
  color: white;
  text-decoration: none;
   }
   
   .btn-secondary {
  background: white;
  color: var(--gray-700);
  border-color: var(--gray-300);
     box-shadow: var(--shadow-sm);
   }
   
   .btn-secondary:hover {
  background: var(--gray-50);
  border-color: var(--gray-400);
   }
   
.btn-outline-primary {
  background: transparent;
  color: var(--primary-600);
  border: 2px solid var(--primary-600);
   }
   
.btn-outline-primary:hover {
  background: var(--primary-600);
  color: white;
  transform: translateY(-2px);
   }
   
   /* 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-base);
}

/* Loading Button */
.btn-loading {
  position: relative;
  color: transparent;
   }
   
.btn-loading::after {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  top: 50%;
  left: 50%;
  margin-left: -8px;
  margin-top: -8px;
  border: 2px solid transparent;
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
   }
   
/* Cards */
   .card {
  background: rgba(255, 255, 255, 0.9);
  border: none;
  border-radius: var(--radius-2xl);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
  backdrop-filter: blur(20px);
     overflow: hidden;
  transition: all 0.3s ease;
  animation: fadeInUp 0.6s ease-out;
   }
   
   .card:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
   }
   
.card.bg-primary {
  background: var(--gradient-primary) !important;
}

.card.bg-success {
  background: var(--gradient-success) !important;
   }
   
.card.bg-info {
  background: var(--gradient-info) !important;
}

.card.bg-warning {
  background: var(--gradient-warning) !important;
   }
   
.card.bg-secondary {
  background: var(--gradient-dark) !important;
   }
   
   .card-body {
     padding: var(--space-6);
   }
   
.card-header {
  padding: var(--space-6);
  border-bottom: 1px solid var(--gray-200);
  background: var(--gray-50);
   }
   
   .card-footer {
  padding: var(--space-6);
  border-top: 1px solid var(--gray-200);
  background: var(--gray-50);
   }
   
/* Forms */
   .form-group {
     margin-bottom: var(--space-5);
   }
   
   .form-label {
     display: block;
     font-size: var(--font-size-sm);
     font-weight: var(--font-weight-medium);
  color: var(--gray-700);
     margin-bottom: var(--space-2);
   }
   
   .form-input,
.form-select,
.form-textarea {
  display: block;
     width: 100%;
     padding: var(--space-3) var(--space-4);
     font-size: var(--font-size-base);
     line-height: var(--line-height-normal);
  color: var(--gray-900);
  background: white;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-base);
  transition: all var(--transition-fast);
   }
   
   .form-input:focus,
.form-select:focus,
.form-textarea:focus {
     outline: none;
  border-color: var(--primary-500);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
   }
   
   .form-input:disabled,
.form-select:disabled,
.form-textarea:disabled {
  background: var(--gray-100);
  color: var(--gray-500);
     cursor: not-allowed;
   }
   
/* Alerts */
   .alert {
     padding: var(--space-4);
  border: none;
  border-radius: var(--radius-xl);
  backdrop-filter: blur(20px);
     margin-bottom: var(--space-4);
   }
   
   .alert-success {
  background: rgba(16, 185, 129, 0.1);
  border-color: rgba(16, 185, 129, 0.2);
  color: var(--success-500);
   }
   
   .alert-warning {
  background: rgba(245, 158, 11, 0.1);
  border-color: rgba(245, 158, 11, 0.2);
  color: var(--warning-500);
   }
   
.alert-error,
.alert-danger {
  background: rgba(239, 68, 68, 0.1);
  border-color: rgba(239, 68, 68, 0.2);
  color: var(--error-500);
   }
   
   .alert-info {
  background: rgba(59, 130, 246, 0.1);
  border-color: rgba(59, 130, 246, 0.2);
  color: var(--info-500);
   }
   
/* Badges */
   .badge {
     display: inline-flex;
     align-items: center;
  padding: var(--space-2) var(--space-3);
     font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-base);
   }
   
   .badge-primary {
  background: var(--primary-100);
  color: var(--primary-700);
   }
   
   .badge-success {
  background: rgba(16, 185, 129, 0.1);
  color: var(--success-500);
   }
   
   .badge-warning {
  background: rgba(245, 158, 11, 0.1);
  color: var(--warning-500);
   }
   
   .badge-error {
  background: rgba(239, 68, 68, 0.1);
  color: var(--error-500);
}

/* List Groups */
.list-group-item {
  border: none;
  border-radius: var(--radius-lg) !important;
  margin-bottom: var(--space-2);
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(10px);
   }
   
/* Modals */
   .modal-backdrop {
     display: none !important;  /* Hide all modal backdrops to prevent gray overlay */
   }
   
   .modal {
  position: fixed;
  top: 50%;
  left: 50%;
  background: white;
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-2xl);
  z-index: var(--z-modal);
  max-width: 90vw;
  max-height: 90vh;
  overflow: auto;
  opacity: 0;
  transition: all var(--transition-base);
}

.modal.show {
  opacity: 1;
   }
   
/* Enhanced modal styling without backdrop */
.modal.fade {
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.25);
  border: 1px solid rgba(0, 0, 0, 0.1);
}
   
   .modal-header {
     padding: var(--space-6);
  border-bottom: 1px solid var(--gray-200);
   }
   
   .modal-body {
     padding: var(--space-6);
   }
   
   .modal-footer {
     padding: var(--space-6);
  border-top: 1px solid var(--gray-200);
     display: flex;
     justify-content: flex-end;
     gap: var(--space-3);
   }
   
/* ==========================================================================
   Animations
   ========================================================================== */

@keyframes fadeInUp {
  from {
     opacity: 0;
    transform: translateY(30px);
   }
  to {
     opacity: 1;
     transform: translateY(0);
  }
   }
   
   /* ==========================================================================
      Utility Classes
      ========================================================================== */
   
   /* Spacing Utilities */
.m-0 { margin: 0; }
   .m-1 { margin: var(--space-1); }
   .m-2 { margin: var(--space-2); }
   .m-3 { margin: var(--space-3); }
   .m-4 { margin: var(--space-4); }
   .m-5 { margin: var(--space-5); }
   .m-6 { margin: var(--space-6); }
   .m-8 { margin: var(--space-8); }
   
.mt-0 { margin-top: 0; }
   .mt-1 { margin-top: var(--space-1); }
   .mt-2 { margin-top: var(--space-2); }
   .mt-3 { margin-top: var(--space-3); }
   .mt-4 { margin-top: var(--space-4); }
   .mt-5 { margin-top: var(--space-5); }
   .mt-6 { margin-top: var(--space-6); }
   .mt-8 { margin-top: var(--space-8); }
   
.mb-0 { margin-bottom: 0; }
   .mb-1 { margin-bottom: var(--space-1); }
   .mb-2 { margin-bottom: var(--space-2); }
   .mb-3 { margin-bottom: var(--space-3); }
   .mb-4 { margin-bottom: var(--space-4); }
   .mb-5 { margin-bottom: var(--space-5); }
   .mb-6 { margin-bottom: var(--space-6); }
   .mb-8 { margin-bottom: var(--space-8); }
   
.p-0 { padding: 0; }
   .p-1 { padding: var(--space-1); }
   .p-2 { padding: var(--space-2); }
   .p-3 { padding: var(--space-3); }
   .p-4 { padding: var(--space-4); }
   .p-5 { padding: var(--space-5); }
   .p-6 { padding: var(--space-6); }
   .p-8 { padding: var(--space-8); }
   
/* Flexbox Utilities */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-row { flex-direction: row; }
.flex-wrap { flex-wrap: wrap; }
.flex-nowrap { flex-wrap: nowrap; }

.items-start { align-items: flex-start; }
.items-center { align-items: center; }
.items-end { align-items: flex-end; }
.items-stretch { align-items: stretch; }

.justify-start { justify-content: flex-start; }
.justify-center { justify-content: center; }
.justify-end { justify-content: flex-end; }
.justify-between { justify-content: space-between; }
.justify-around { justify-content: space-around; }
   
.flex-1 { flex: 1 1 0%; }
.flex-auto { flex: 1 1 auto; }
.flex-none { flex: none; }

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

.text-xs { font-size: var(--font-size-xs); }
.text-sm { font-size: var(--font-size-sm); }
.text-base { font-size: var(--font-size-base); }
.text-lg { font-size: var(--font-size-lg); }
.text-xl { font-size: var(--font-size-xl); }
.text-2xl { font-size: var(--font-size-2xl); }

.font-normal { font-weight: var(--font-weight-normal); }
.font-medium { font-weight: var(--font-weight-medium); }
.font-semibold { font-weight: var(--font-weight-semibold); }
.font-bold { font-weight: var(--font-weight-bold); }

.text-gray-500 { color: var(--gray-500); }
.text-gray-600 { color: var(--gray-600); }
.text-gray-700 { color: var(--gray-700); }
.text-gray-900 { color: var(--gray-900); }
   
   /* Display Utilities */
   .block { display: block; }
   .inline-block { display: inline-block; }
.inline { display: inline; }
   .hidden { display: none; }
   
   /* Position Utilities */
   .relative { position: relative; }
   .absolute { position: absolute; }
   .fixed { position: fixed; }
   .sticky { position: sticky; }
   
/* Width & Height Utilities */
   .w-full { width: 100%; }
   .h-full { height: 100%; }
   .min-h-screen { min-height: 100vh; }
   
/* Border Radius Utilities */
.rounded-sm { border-radius: var(--radius-sm); }
.rounded { border-radius: var(--radius-base); }
.rounded-md { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }
.rounded-2xl { border-radius: var(--radius-2xl); }
.rounded-full { border-radius: var(--radius-full); }
   
/* Shadow Utilities */
.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow { box-shadow: var(--shadow-base); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-xl { box-shadow: var(--shadow-xl); }
.shadow-2xl { box-shadow: var(--shadow-2xl); }
   
   /* ==========================================================================
   Responsive Utilities
      ========================================================================== */
   
@media (min-width: 640px) {
  .sm\:block { display: block; }
  .sm\:hidden { display: none; }
  .sm\:flex { display: flex; }
  .sm\:text-left { text-align: left; }
  .sm\:text-center { text-align: center; }
  .sm\:text-right { text-align: right; }
}

@media (min-width: 768px) {
  .md\:block { display: block; }
  .md\:hidden { display: none; }
  .md\:flex { display: flex; }
  .md\:text-left { text-align: left; }
  .md\:text-center { text-align: center; }
  .md\:text-right { text-align: right; }
}

@media (min-width: 1024px) {
  .lg\:block { display: block; }
  .lg\:hidden { display: none; }
  .lg\:flex { display: flex; }
  .lg\:text-left { text-align: left; }
  .lg\:text-center { text-align: center; }
  .lg\:text-right { text-align: right; }
   }