/* 
 * Receive SMS Fast - Enhanced Design System
 * Una arquitectura CSS optimizada con enfoque en rendimiento, 
 * consistencia y experiencia de usuario
 */

:root {
  /* Color Palette - Modern & Professional */
  --primary-50: #e6f7ff;
  --primary-100: #bae7ff;
  --primary-200: #91d5ff;
  --primary-300: #69c0ff;
  --primary-400: #40a9ff;
  --primary-500: #1890ff;
  --primary-600: #096dd9;
  --primary-700: #0050b3;
  --primary-800: #003a8c;
  --primary-900: #002766;
  
  --primary-rgb: 24, 144, 255;
  
  /* Neutral Colors - Enhanced for Readability */
  --neutral-50: #fafafa;
  --neutral-100: #f5f5f5;
  --neutral-200: #e6e6e6;
  --neutral-300: #d9d9d9;
  --neutral-400: #bfbfbf;
  --neutral-500: #8c8c8c;
  --neutral-600: #595959;
  --neutral-700: #434343;
  --neutral-800: #262626;
  --neutral-900: #141414;
  
  /* System Colors */
  --success-color: #52c41a;
  --success-rgb: 82, 196, 26;
  --warning-color: #faad14;
  --warning-rgb: 250, 173, 20;
  --error-color: #f5222d;
  --error-rgb: 245, 34, 45;
  --info-color: #1890ff;
  --info-rgb: 24, 144, 255;
  
  /* Backgrounds */
  --body-bg: #f8f9fa;
  --white: #ffffff;
  --card-bg: var(--white);
  
  /* Typography */
  --font-sans: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  
  /* Spacing System - Consistente y Escalable */
  --space-1: 0.25rem;  /* 4px */
  --space-2: 0.5rem;   /* 8px */
  --space-3: 0.75rem;  /* 12px */
  --space-4: 1rem;     /* 16px */
  --space-5: 1.5rem;   /* 24px */
  --space-6: 2rem;     /* 32px */
  --space-7: 2.5rem;   /* 40px */
  --space-8: 3rem;     /* 48px */
  
  /* Border Radius */
  --radius-sm: 0.25rem;   /* 4px */
  --radius-md: 0.5rem;    /* 8px */
  --radius-lg: 0.75rem;   /* 12px */
  --radius-xl: 1rem;      /* 16px */
  --radius-2xl: 1.5rem;   /* 24px */
  --radius-circle: 50%;
  
  /* Shadows - Más Refinados */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.07);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.08);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  
  /* Transitions */
  --transition-base: all 0.2s ease-in-out;
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Z-Index Scale */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-offcanvas: 1040;
  --z-modal: 1050;
  --z-tooltip: 1070;
  
  /* Border Width */
  --border-width: 1px;
  --border-width-md: 2px;
  --border-width-lg: 3px;
  
  /* Tamaños Comunes */
  --header-height: 64px;
  --container-max-width: 1200px;
}

/* ====== BASE STYLES ====== */
*, *::before, *::after {
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--body-bg);
  color: var(--neutral-800);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  margin: 0;
  padding: 0;
}

/* ====== TYPOGRAPHY ====== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.3;
  margin-top: 0;
  margin-bottom: var(--space-4);
  color: var(--neutral-900);
}

h1, .h1 { font-size: 2.25rem; }
h2, .h2 { font-size: 1.875rem; }
h3, .h3 { font-size: 1.5rem; }
h4, .h4 { font-size: 1.25rem; }
h5, .h5 { font-size: 1.125rem; }
h6, .h6 { font-size: 1rem; }

.display-1 { font-size: 5rem; }
.display-2 { font-size: 4.5rem; }
.display-3 { font-size: 4rem; }
.display-4 { font-size: 3.5rem; }
.display-5 { font-size: 3rem; }
.display-6 { font-size: 2.5rem; }

p {
  margin-top: 0;
  margin-bottom: var(--space-4);
}

.lead {
  font-size: 1.125rem;
  font-weight: 400;
  color: var(--neutral-600);
  line-height: 1.6;
}

.text-small {
  font-size: 0.875rem;
}

.text-large {
  font-size: 1.125rem;
}

.fw-light { font-weight: 300; }
.fw-normal { font-weight: 400; }
.fw-medium { font-weight: 500; }
.fw-semibold { font-weight: 600; }
.fw-bold { font-weight: 700; }

.gradient-text {
  background: linear-gradient(135deg, var(--primary-500), var(--primary-700));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

/* ====== LAYOUT & CONTAINERS ====== */
.container {
  width: 100%;
  margin-right: auto;
  margin-left: auto;
  padding-right: var(--space-4);
  padding-left: var(--space-4);
  max-width: var(--container-max-width);
}

.row {
  display: flex;
  flex-wrap: wrap;
  margin-right: calc(var(--space-3) * -1);
  margin-left: calc(var(--space-3) * -1);
}

.row > * {
  padding-right: var(--space-3);
  padding-left: var(--space-3);
}

/* ====== HEADER & NAVIGATION ====== */
.header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: var(--border-width) solid var(--neutral-200);
  height: var(--header-height);
  display: flex;
  align-items: center;
  transition: var(--transition-base);
  box-shadow: var(--shadow-xs);
}

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

.logo {
  display: flex;
  align-items: center;
}

.logo img, .logo svg {
  height: 32px;
  width: auto;
}

.logo-text {
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1;
}

.brand-text {
  background: linear-gradient(135deg, var(--primary-500), var(--primary-700));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-link {
  color: var(--neutral-700);
  font-weight: 500;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  transition: var(--transition-base);
  text-decoration: none;
}

.nav-link:hover {
  color: var(--primary-600);
  background-color: var(--primary-50);
}

.nav-link.active {
  color: var(--primary-600);
  background-color: var(--primary-100);
}

.dropdown-menu {
  padding: var(--space-3);
  border-radius: var(--radius-lg);
  border: none;
  box-shadow: var(--shadow-lg);
  min-width: 220px;
  margin-top: var(--space-2);
}

.dropdown-item {
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  font-weight: 400;
  transition: var(--transition-base);
}

.dropdown-item:hover {
  background-color: var(--primary-50);
  color: var(--primary-600);
}

.dropdown-item i {
  color: var(--primary-500);
  width: 20px;
  text-align: center;
  margin-right: var(--space-2);
}

.navbar-toggler {
  background-color: var(--neutral-100);
  border: none;
  border-radius: var(--radius-md);
  width: 45px;
  height: 45px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-base);
  padding: 0;
}

.navbar-toggler:hover {
  background-color: var(--primary-50);
}

.navbar-toggler i {
  color: var(--neutral-800);
  font-size: 1.25rem;
}

.offcanvas {
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  max-width: 320px;
  border: none;
}

.offcanvas-header {
  padding: var(--space-4);
  border-bottom: var(--border-width) solid var(--neutral-200);
}

.offcanvas-title {
  font-weight: 600;
  color: var(--neutral-900);
}

.offcanvas-body {
  padding: var(--space-3);
}

/* ====== BUTTONS ====== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1rem;
  font-weight: 500;
  font-size: 0.9375rem;
  line-height: 1.5;
  text-align: center;
  text-decoration: none;
  vertical-align: middle;
  border-radius: var(--radius-md);
  transition: var(--transition-base);
  border: none;
  cursor: pointer;
  user-select: none;
  position: relative;
  overflow: hidden;
}

.btn i {
  margin-right: var(--space-2);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
  color: white;
  box-shadow: 0 2px 4px rgba(9, 109, 217, 0.2);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
  box-shadow: 0 4px 8px rgba(9, 109, 217, 0.25);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 1px 2px rgba(9, 109, 217, 0.2);
}

.btn-outline-primary {
  background: transparent;
  color: var(--primary-600);
  border: var(--border-width) solid var(--primary-500);
}

.btn-outline-primary:hover {
  background-color: var(--primary-50);
  color: var(--primary-700);
  border-color: var(--primary-600);
}

.btn-secondary {
  background-color: var(--neutral-200);
  color: var(--neutral-800);
}

.btn-secondary:hover {
  background-color: var(--neutral-300);
  color: var(--neutral-900);
}

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

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

.btn-lg {
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  border-radius: var(--radius-md);
}

.btn-sm {
  padding: 0.25rem 0.75rem;
  font-size: 0.875rem;
  border-radius: var(--radius-sm);
}

.btn-block {
  display: block;
  width: 100%;
}

/* ====== CARD STYLES ====== */
.card {
  position: relative;
  background-color: var(--card-bg);
  border-radius: var(--radius-lg);
  border: none;
  overflow: hidden;
  transition: var(--transition-base);
}

.card-shadow-sm {
  box-shadow: var(--shadow-sm);
}

.card-shadow-md {
  box-shadow: var(--shadow-md);
}

.card-shadow-lg {
  box-shadow: var(--shadow-lg);
}

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

.card-header {
  padding: var(--space-4) var(--space-5);
  background-color: var(--neutral-50);
  border-bottom: var(--border-width) solid var(--neutral-200);
}

.card-footer {
  padding: var(--space-4) var(--space-5);
  background-color: var(--neutral-50);
  border-top: var(--border-width) solid var(--neutral-200);
}

/* Card Hover Effect */
.transition-hover {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.transition-hover:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

/* ====== FEATURE CARDS & SECTIONS ====== */
.feature-card {
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  background-color: var(--white);
  transition: var(--transition-base);
}

.feature-item {
  background: rgba(var(--primary-rgb), 0.05);
  border-radius: var(--radius-lg);
  transition: var(--transition-base);
}

.feature-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-sm);
}

.feature-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-circle);
  background-color: var(--primary-50);
  color: var(--primary-500);
  margin-bottom: var(--space-3);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-4);
}

/* ====== HERO SECTION ====== */
.hero-section {
  position: relative;
  padding: var(--space-6) 0;
  background: linear-gradient(135deg, var(--primary-50), var(--neutral-100));
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: var(--space-5);
}

.hero-section::before {
  content: '';
  position: absolute;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, var(--primary-200), transparent 70%);
  top: -150px;
  right: -150px;
  border-radius: 50%;
  opacity: 0.5;
}

.hero-section::after {
  content: '';
  position: absolute;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, var(--primary-300), transparent 70%);
  bottom: -100px;
  left: -100px;
  border-radius: 50%;
  opacity: 0.4;
}

/* ====== NUMBER CARDS ====== */
.number-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition-base);
  background-color: var(--white);
  height: 100%;
}

.number-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.phone-number-display {
  background-color: var(--primary-50);
  border-radius: var(--radius-lg);
  padding: var(--space-3);
  margin-bottom: var(--space-3);
}

/* Country and Service Cards */
.country-card, .service-card {
  height: 100%;
  transition: var(--transition-base);
  background-color: var(--white);
  border-radius: var(--radius-lg);
}

.service-badge {
  position: absolute;
  right: 0;
  bottom: 0;
  width: 24px;
  height: 24px;
  border: 2px solid white;
  border-radius: 50%;
  background-color: var(--white);
  box-shadow: var(--shadow-sm);
}

.flag-wrapper {
  position: relative;
  display: inline-block;
  margin-bottom: var(--space-3);
}

/* ====== STATUS INDICATORS ====== */
.status-badge {
  position: absolute;
  bottom: 0;
  right: 0;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 2px solid white;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.1);
}

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

.status-offline {
  background-color: var(--error-color);
}

/* Badge Pulse Effect */
.badge-pulse {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100%;
  height: 100%;
}

.badge-pulse::before,
.badge-pulse::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: var(--primary-300);
  opacity: 0.6;
  animation: pulse 2s infinite;
}

.badge-pulse::after {
  animation-delay: 0.5s;
}

@keyframes pulse {
  0% {
    width: 0;
    height: 0;
    opacity: 0.6;
  }
  100% {
    width: 120px;
    height: 120px;
    opacity: 0;
  }
}

/* Quality Badge */
.quality-badge-wrapper {
  position: relative;
  display: inline-block;
  margin-bottom: var(--space-4);
}

.quality-badge {
  width: 80px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--white);
  border-radius: 50%;
  box-shadow: var(--shadow-md);
  position: relative;
  z-index: 1;
}

/* ====== BADGE STYLES ====== */
.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.35em 0.65em;
  font-size: 0.75em;
  font-weight: 500;
  line-height: 1;
  color: var(--white);
  white-space: nowrap;
  vertical-align: baseline;
  border-radius: var(--radius-sm);
}

.badge.rounded-circle {
  width: 2.5em;
  height: 2.5em;
  padding: 0;
  border-radius: 50%;
}

.bg-primary {
  background-color: var(--primary-500) !important;
}

.bg-secondary {
  background-color: var(--neutral-500) !important;
}

.bg-success {
  background-color: var(--success-color) !important;
}

.bg-danger {
  background-color: var(--error-color) !important;
}

.bg-warning {
  background-color: var(--warning-color) !important;
}

.bg-info {
  background-color: var(--info-color) !important;
}

.bg-light {
  background-color: var(--neutral-100) !important;
  color: var(--neutral-800);
}

.bg-dark {
  background-color: var(--neutral-800) !important;
}

.bg-white {
  background-color: var(--white) !important;
  color: var(--neutral-800);
}

/* ====== ACCORDION STYLES ====== */
.accordion {
  --bs-accordion-bg: transparent;
  --bs-accordion-active-bg: var(--primary-50);
  --bs-accordion-active-color: var(--primary-600);
  --bs-accordion-btn-focus-box-shadow: none;
}

.accordion-item {
  border: none;
  border-radius: var(--radius-lg) !important;
  overflow: hidden;
  margin-bottom: var(--space-3);
  background-color: var(--white);
  box-shadow: var(--shadow-sm);
}

.accordion-header {
  margin-bottom: 0;
}

.accordion-button {
  padding: var(--space-4);
  font-weight: 500;
  color: var(--neutral-800);
  background-color: var(--white);
  border: none;
  position: relative;
  transition: var(--transition-base);
}

.accordion-button:not(.collapsed) {
  color: var(--primary-600);
  background-color: var(--primary-50);
  box-shadow: none;
}

.accordion-button:focus {
  box-shadow: none;
  border-color: var(--primary-200);
}

.accordion-button::after {
  background-size: 16px;
  transition: var(--transition-base);
}

.accordion-collapse {
  border: 0;
}

.accordion-body {
  padding: var(--space-4);
  color: var(--neutral-600);
}

/* ====== MESSAGE CARD STYLING ====== */
.message-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-base);
  margin-bottom: var(--space-3);
}

.message-card:hover {
  box-shadow: var(--shadow-md);
}

.message-text {
  background-color: var(--neutral-50);
  padding: var(--space-3);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-3);
  font-size: 0.9375rem;
  line-height: 1.6;
}

/* Phone Number Container */
.phone-number-container {
  background-color: var(--neutral-50);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  margin-bottom: var(--space-4);
  position: relative;
  overflow: hidden;
}

.phone-number-container::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, transparent, var(--primary-50));
  opacity: 0.7;
}

.phone-number {
  font-weight: 700;
  color: var(--neutral-800);
  cursor: pointer;
  position: relative;
}

.phone-number:hover {
  color: var(--primary-600);
}

.copy-hint {
  opacity: 0.7;
  font-size: 0.8125rem;
}

/* Instructions Card */
.instructions-card {
  background-color: var(--neutral-50);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-4);
}




/* ====== PAGINATION ====== */
.pagination {
  display: flex;
  padding-left: 0;
  list-style: none;
  border-radius: var(--radius-sm);
}

.page-link {
  position: relative;
  display: block;
  padding: var(--space-2) var(--space-3);
  margin-left: -1px;
  line-height: 1.25;
  color: var(--primary-500);
  background-color: var(--white);
  border: var(--border-width) solid var(--neutral-200);
  transition: var(--transition-base);
}

.page-link:hover {
  color: var(--primary-700);
  background-color: var(--neutral-100);
  border-color: var(--neutral-300);
}

.page-item.active .page-link {
  color: var(--white);
  background-color: var(--primary-500);
  border-color: var(--primary-500);
}

.page-item.disabled .page-link {
  color: var(--neutral-400);
  background-color: var(--white);
  border-color: var(--neutral-200);
}

/* ====== ALERTS ====== */
.alert {
  position: relative;
  padding: var(--space-3) var(--space-4);
  margin-bottom: var(--space-4);
  border: var(--border-width) solid transparent;
  border-radius: var(--radius-lg);
}

.alert-primary {
  color: #084298;
  background-color: #cfe2ff;
  border-color: #b6d4fe;
}

.alert-dismissible {
  padding-right: var(--space-4);
}

.alert-dismissible .btn-close {
  position: absolute;
  top: 0;
  right: 0;
  padding: var(--space-3);
}

/* ====== FOOTER ====== */
.footer {
  background-color: var(--neutral-50);
  padding: var(--space-5) 0;
  margin-top: var(--space-6);
  border-top: var(--border-width) solid var(--neutral-200);
}

.footer p {
  color: var(--neutral-600);
  margin-bottom: var(--space-3);
}

.social-icons {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
}

.social-icons a {
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background-color: var(--neutral-100);
  color: var(--primary-500);
  margin: 0 var(--space-2);
  transition: var(--transition-base);
}

.social-icons a:hover {
  background-color: var(--primary-500);
  color: var(--white);
  transform: translateY(-2px);
}

/* ====== TOAST NOTIFICATIONS ====== */
.toast-container {
  position: fixed;
  bottom: var(--space-4);
  right: var(--space-4);
  z-index: var(--z-tooltip);
}

.toast {
  position: relative;
  max-width: 350px;
  background-color: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(8px);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: var(--space-3);
  box-shadow: var(--shadow-lg);
  border: none;
}

.toast.bg-success,
.toast.bg-danger {
  color: var(--white);
}

.toast-body {
  padding: var(--space-3);
  display: flex;
  align-items: center;
}

.toast-body i {
  margin-right: var(--space-2);
  font-size: 1.125rem;
}

.btn-close-white {
  color: var(--white);
  opacity: 0.9;
}

/* ====== UTILITY CLASSES ====== */
/* Text Colors */
.text-primary { color: var(--primary-500) !important; }
.text-secondary { color: var(--neutral-600) !important; }
.text-success { color: var(--success-color) !important; }
.text-danger { color: var(--error-color) !important; }
.text-warning { color: var(--warning-color) !important; }
.text-info { color: var(--info-color) !important; }
.text-dark { color: var(--neutral-800) !important; }
.text-muted { color: var(--neutral-500) !important; }
.text-white { color: var(--white) !important; }
.text-center { text-align: center !important; }
.text-start { text-align: left !important; }
.text-end { text-align: right !important; }

/* Display */
.d-none { display: none !important; }
.d-block { display: block !important; }
.d-flex { display: flex !important; }
.d-inline { display: inline !important; }
.d-inline-block { display: inline-block !important; }
.d-inline-flex { display: inline-flex !important; }

/* Flex Utilities */
.flex-column { flex-direction: column !important; }
.flex-wrap { flex-wrap: wrap !important; }
.justify-content-center { justify-content: center !important; }
.justify-content-between { justify-content: space-between !important; }
.justify-content-start { justify-content: flex-start !important; }
.justify-content-end { justify-content: flex-end !important; }
.align-items-center { align-items: center !important; }
.align-items-start { align-items: flex-start !important; }
.align-items-end { align-items: flex-end !important; }
.flex-grow-1 { flex-grow: 1 !important; }

/* Spacing Utilities */
.m-0 { margin: 0 !important; }
.mb-0 { margin-bottom: 0 !important; }
.mb-1 { margin-bottom: var(--space-1) !important; }
.mb-2 { margin-bottom: var(--space-2) !important; }
.mb-3 { margin-bottom: var(--space-3) !important; }
.mb-4 { margin-bottom: var(--space-4) !important; }
.mb-5 { margin-bottom: var(--space-5) !important; }
.mt-0 { margin-top: 0 !important; }
.mt-1 { margin-top: var(--space-1) !important; }
.mt-2 { margin-top: var(--space-2) !important; }
.mt-3 { margin-top: var(--space-3) !important; }
.mt-4 { margin-top: var(--space-4) !important; }
.mt-5 { margin-top: var(--space-5) !important; }
.mt-auto { margin-top: auto !important; }
.me-1 { margin-right: var(--space-1) !important; }
.me-2 { margin-right: var(--space-2) !important; }
.me-3 { margin-right: var(--space-3) !important; }
.me-4 { margin-right: var(--space-4) !important; }
.ms-1 { margin-left: var(--space-1) !important; }
.ms-2 { margin-left: var(--space-2) !important; }
.ms-3 { margin-left: var(--space-3) !important; }
.mx-auto { margin-left: auto !important; margin-right: auto !important; }
.my-1 { margin-top: var(--space-1) !important; margin-bottom: var(--space-1) !important; }
.my-2 { margin-top: var(--space-2) !important; margin-bottom: var(--space-2) !important; }
.my-3 { margin-top: var(--space-3) !important; margin-bottom: var(--space-3) !important; }
.my-4 { margin-top: var(--space-4) !important; margin-bottom: var(--space-4) !important; }
.my-5 { margin-top: var(--space-5) !important; margin-bottom: var(--space-5) !important; }

.p-0 { padding: 0 !important; }
.p-1 { padding: var(--space-1) !important; }
.p-2 { padding: var(--space-2) !important; }
.p-3 { padding: var(--space-3) !important; }
.p-4 { padding: var(--space-4) !important; }
.p-5 { padding: var(--space-5) !important; }
.px-3 { padding-left: var(--space-3) !important; padding-right: var(--space-3) !important; }
.px-4 { padding-left: var(--space-4) !important; padding-right: var(--space-4) !important; }
.py-1 { padding-top: var(--space-1) !important; padding-bottom: var(--space-1) !important; }
.py-2 { padding-top: var(--space-2) !important; padding-bottom: var(--space-2) !important; }
.py-3 { padding-top: var(--space-3) !important; padding-bottom: var(--space-3) !important; }
.py-4 { padding-top: var(--space-4) !important; padding-bottom: var(--space-4) !important; }
.py-5 { padding-top: var(--space-5) !important; padding-bottom: var(--space-5) !important; }

/* Position */
.position-relative { position: relative !important; }
.position-absolute { position: absolute !important; }
.position-fixed { position: fixed !important; }

/* Border Radius */
.rounded-circle { border-radius: 50% !important; }
.rounded-3 { border-radius: var(--radius-md) !important; }
.rounded-4 { border-radius: var(--radius-lg) !important; }

/* Misc Utilities */
.shadow-sm { box-shadow: var(--shadow-sm) !important; }
.shadow-lg { box-shadow: var(--shadow-lg) !important; }
.border-0 { border: 0 !important; }
.w-100 { width: 100% !important; }
.h-100 { height: 100% !important; }
.gap-3 { gap: var(--space-3) !important; }
.gap-4 { gap: var(--space-4) !important; }
.small { font-size: 0.875em !important; }
.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

/* ====== RESPONSIVE MEDIA QUERIES ====== */
/* Extra small devices (portrait phones) */
@media (max-width: 575.98px) {
  :root {
    --space-5: 1.25rem;
    --space-6: 1.5rem;
  }
  
  .card-body {
    padding: var(--space-3);
  }
  
  .container {
    padding-right: var(--space-3);
    padding-left: var(--space-3);
  }
  
  .display-4 {
    font-size: 2rem;
  }
  
  .display-6 {
    font-size: 1.5rem;
  }
  
  .lead {
    font-size: 1rem;
  }
  
  .hero-section {
    padding: var(--space-4) 0;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
    gap: var(--space-3);
  }
  
  h1, .h1 { font-size: 1.75rem; }
  h2, .h2 { font-size: 1.5rem; }
  
  .phone-number-container,
  .instructions-card {
    padding: var(--space-3);
  }
  
  .badge-pulse::before,
  .badge-pulse::after {
    width: 60px;
    height: 60px;
  }
  
  .quality-badge {
    width: 60px;
    height: 60px;
  }
  
  .toast-container {
    right: var(--space-2);
    bottom: var(--space-2);
    left: var(--space-2);
  }
  
  .toast {
    max-width: 100%;
  }
}

/* Small devices (landscape phones) */
@media (min-width: 576px) and (max-width: 767.98px) {
  .card-body {
    padding: var(--space-4);
  }
  
  .display-4 {
    font-size: 2.5rem;
  }
}

/* Medium devices (tablets) */
@media (min-width: 768px) and (max-width: 991.98px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Large devices (desktops) */
@media (min-width: 992px) {
  /* Desktop specific styles */
}

/* Print Styles */
@media print {
  .btn, .action-buttons, .header, .footer, .toast-container {
    display: none !important;
  }
  
  .card {
    box-shadow: none !important;
    border: 1px solid var(--neutral-300) !important;
  }
  
  .message-card {
    page-break-inside: avoid;
  }
  
  body {
    background-color: white !important;
  }
}

/* Reduced Motion Preferences */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* Dark Mode Support (if needed) */
@media (prefers-color-scheme: dark) {
  /* This can be implemented if dark mode is desired */
}