/* =============================================================================
   MODERN GLASSMORPHISM DESIGN SYSTEM
   Google Gemini Inspired UI Components for Meridian Endodontics
   ============================================================================= */

/* CSS Custom Properties - Modern Design System */
:root {
  /* Brand Colors - Professional Medical */
  --brand-primary: #0891b2;
  --brand-secondary: #06b6d4;
  --brand-accent: #22d3ee;
  --brand-success: #10b981;
  --brand-warning: #d97706; /* Improved contrast for WCAG AA compliance */
  --brand-error: #ef4444;

  /* Glassmorphism Colors */
  --glass-bg: rgba(255, 255, 255, 0.1);
  --glass-bg-hover: rgba(255, 255, 255, 0.15);
  --glass-border: rgba(255, 255, 255, 0.2);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);

  /* Slate Color Palette */
  --slate-50: #f8fafc;
  --slate-100: #f1f5f9;
  --slate-200: #e2e8f0;
  --slate-300: #cbd5e1;
  --slate-400: #94a3b8;
  --slate-500: #64748b;
  --slate-600: #475569;
  --slate-700: #334155;
  --slate-800: #1e293b;
  --slate-900: #0f172a;

  /* Medical Typography Standards */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-display: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-body-size: 16px; /* WCAG 2.1 AA minimum */
  --font-line-height: 1.6; /* Optimal readability */
  --font-scale-ratio: 1.25; /* Modular scale */

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;

  /* Border Radius */
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-2xl: 2rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow: 350ms ease;
}

/* =============================================================================
   MODERN NAVIGATION COMPONENTS
   ============================================================================= */

/* Desktop Navigation Links */
.modern-nav-link {
  @apply relative px-4 py-2.5 rounded-xl font-medium transition-all duration-300;
  @apply text-slate-600 hover:text-slate-900;
  @apply hover:bg-slate-100/80;
  backdrop-filter: blur(8px);
}

.modern-nav-link.active {
  @apply text-brand-primary;
  @apply bg-gradient-to-r from-brand-primary/10 to-brand-secondary/10;
  @apply border border-brand-primary/20;
  box-shadow: 0 0 20px rgba(8, 145, 178, 0.1);
}

.modern-nav-link::before {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--brand-primary), var(--brand-secondary));
  transition: width var(--transition-normal);
}

.modern-nav-link:hover::before {
  width: 80%;
}

/* Mobile Navigation Links */
.mobile-nav-link {
  @apply flex items-center px-4 py-3 rounded-xl font-medium transition-all duration-300;
  @apply text-slate-300 hover:text-white hover:bg-white/10;
  backdrop-filter: blur(8px);
}

.mobile-nav-link.active {
  @apply text-white bg-gradient-to-r from-brand-primary/20 to-brand-secondary/20;
  @apply border border-brand-primary/30;
}

/* Primary Button */
.modern-btn-primary {
  @apply inline-flex items-center px-5 py-2.5 rounded-xl font-semibold;
  @apply bg-gradient-to-r from-brand-primary to-brand-secondary;
  @apply text-white hover:from-brand-primary/90 hover:to-brand-secondary/90;
  @apply shadow-lg hover:shadow-xl transform hover:-translate-y-0.5;
  @apply transition-all duration-300;
  backdrop-filter: blur(8px);
}

/* Outline Button */
.modern-btn-outline {
  @apply inline-flex items-center px-5 py-2.5 rounded-xl font-semibold;
  @apply bg-white/10 backdrop-blur-md border-2 border-white/30;
  @apply text-white hover:bg-white/20 hover:border-white/40;
  @apply shadow-lg hover:shadow-xl transform hover:-translate-y-0.5;
  @apply transition-all duration-300;
}

.modern-btn-primary:hover {
  box-shadow: 0 20px 25px -5px rgba(8, 145, 178, 0.25), 0 10px 10px -5px rgba(8, 145, 178, 0.1);
}

/* =============================================================================
   MEDICAL TYPOGRAPHY STANDARDS
   WCAG 2.1 AA Compliance for Healthcare Websites
   ============================================================================= */

/* Medical Base Typography */
.medical-body {
  font-family: var(--font-primary);
  font-size: var(--font-body-size);
  line-height: var(--font-line-height);
  color: var(--slate-700);
}

.medical-heading-1 {
  font-family: var(--font-display);
  font-size: calc(var(--font-body-size) * var(--font-scale-ratio) * var(--font-scale-ratio) * var(--font-scale-ratio)); /* 31.25px */
  line-height: 1.2;
  font-weight: 700;
  color: var(--slate-900);
}

.medical-heading-2 {
  font-family: var(--font-display);
  font-size: calc(var(--font-body-size) * var(--font-scale-ratio) * var(--font-scale-ratio)); /* 25px */
  line-height: 1.3;
  font-weight: 600;
  color: var(--slate-900);
}

.medical-heading-3 {
  font-family: var(--font-display);
  font-size: calc(var(--font-body-size) * var(--font-scale-ratio)); /* 20px */
  line-height: 1.4;
  font-weight: 600;
  color: var(--slate-900);
}

.medical-text {
  font-family: var(--font-primary);
  font-size: var(--font-body-size);
  line-height: var(--font-line-height);
  color: var(--slate-700);
}

.medical-text-small {
  font-family: var(--font-primary);
  font-size: calc(var(--font-body-size) * 0.875); /* 14px */
  line-height: var(--font-line-height);
  color: var(--slate-600);
}

/* High Contrast for Medical Information */
.medical-high-contrast {
  color: var(--slate-900);
  font-weight: 500;
}

/* Emergency Text - Maximum Visibility */
.medical-emergency {
  font-family: var(--font-display);
  font-size: calc(var(--font-body-size) * 1.125); /* 18px */
  font-weight: 700;
  line-height: 1.4;
  color: #dc2626;
}

/* =============================================================================
   NAVIGATION RESPONSIVE FIXES
   ============================================================================= */

/* Desktop Navigation - Show on medium screens and up */
.nav-header .hidden.md\:flex {
  display: none !important;
}

@media (min-width: 768px) {
  .nav-header .hidden.md\:flex {
    display: flex !important;
  }
}

/* Mobile Actions - Hide on medium screens and up */
.nav-header .md\:hidden {
  display: flex;
}

@media (min-width: 768px) {
  .nav-header .md\:hidden {
    display: none !important;
  }
}

/* Mobile Menu - Hide on medium screens and up */
.nav-header .md\:hidden.border-t {
  display: block;
}

@media (min-width: 768px) {
  .nav-header .md\:hidden.border-t {
    display: none !important;
  }
}

/* Trust Banner - Show on desktop only */
.nav-header .hidden.md\:block {
  display: none;
}

@media (min-width: 768px) {
  .nav-header .hidden.md\:block {
    display: block;
  }
}

/* Additional responsive utilities */
.hidden-sm {
  display: none;
}

@media (min-width: 640px) {
  .hidden-sm {
    display: block;
  }
}

/* =============================================================================
   MODERN HAMBURGER ANIMATION
   ============================================================================= */

.modern-hamburger-line {
  @apply block w-6 h-0.5 bg-current rounded-full transition-all duration-300;
}

.modern-hamburger-line:nth-child(1) {
  transform: translateY(-8px);
}

.modern-hamburger-line:nth-child(2) {
  opacity: 1;
}

.modern-hamburger-line:nth-child(3) {
  transform: translateY(8px);
}

/* Close Icon Animation */
.modern-hamburger-close {
  @apply absolute block w-6 h-0.5 bg-current rounded-full;
  @apply transition-all duration-300;
}

.modern-hamburger-close:nth-child(4) {
  transform: rotate(45deg);
}

.modern-hamburger-close:nth-child(5) {
  transform: rotate(-45deg);
}

/* =============================================================================
   PHOSPHOR ICONS INTEGRATION
   ============================================================================= */

/* Phosphor Icons Base Styles */
.ph {
  @apply inline-block;
  font-family: 'Phosphor', sans-serif;
  font-style: normal;
  font-weight: 400;
  font-variant: normal;
  text-rendering: auto;
  line-height: 1;
  letter-spacing: 0;
  text-transform: none;
}

/* Icon Sizes */
.ph-sm { font-size: 0.875rem; }
.ph-md { font-size: 1rem; }
.ph-lg { font-size: 1.25rem; }
.ph-xl { font-size: 1.5rem; }
.ph-2xl { font-size: 2rem; }

/* =============================================================================
   MODERN HERO SECTION
   ============================================================================= */

.modern-hero {
  @apply relative min-h-screen flex items-center justify-center overflow-hidden;
  background: linear-gradient(135deg, var(--slate-900) 0%, var(--slate-800) 100%);
  padding: 120px 0 80px;
}

.modern-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(circle at 20% 80%, rgba(8, 145, 178, 0.3) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(34, 211, 238, 0.3) 0%, transparent 50%),
    radial-gradient(circle at 40% 40%, rgba(16, 185, 129, 0.2) 0%, transparent 50%);
}

.modern-hero-content {
  @apply relative z-10 text-center max-w-4xl mx-auto px-6;
  padding: 0 2rem;
}

.modern-hero-title {
  @apply text-5xl md:text-7xl font-bold;
  font-family: var(--font-display);
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 2rem;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.modern-hero-subtitle {
  @apply text-xl md:text-2xl text-slate-300 leading-relaxed;
  margin-bottom: 3rem;
  max-width: 42rem;
  margin-left: auto;
  margin-right: auto;
}

/* =============================================================================
   MODERN CARD COMPONENTS
   ============================================================================= */

.modern-card {
  @apply bg-white/10 backdrop-blur-xl rounded-2xl border border-white/20;
  @apply p-6 transition-all duration-300;
  box-shadow: var(--glass-shadow);
}

.modern-card:hover {
  @apply bg-white/15;
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.modern-card-header {
  @apply mb-4 flex items-center justify-between;
}

.modern-card-title {
  @apply text-xl font-semibold text-slate-900;
}

.modern-card-description {
  @apply text-slate-600 leading-relaxed text-base;
}

/* =============================================================================
   MODERN SERVICE GRID
   ============================================================================= */

.modern-service-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  max-width: 80rem;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Responsive breakpoints for service grid */
@media (min-width: 768px) {
  .modern-service-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 2.5rem;
  }
}

@media (min-width: 1024px) {
  .modern-service-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
  }
}

.modern-service-card {
  @apply modern-card group cursor-pointer;
  padding: 2.5rem;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.modern-service-icon {
  @apply w-20 h-20 mb-6 rounded-2xl flex items-center justify-center;
  @apply bg-gradient-to-br from-brand-primary to-brand-secondary;
  @apply text-white text-2xl transition-all duration-300;
}

.modern-service-card:hover .modern-service-icon {
  transform: scale(1.1) rotate(5deg);
  box-shadow: 0 10px 25px rgba(8, 145, 178, 0.3);
}

/* =============================================================================
   MODERN FORM COMPONENTS
   ============================================================================= */

.modern-form-group {
  @apply mb-6;
}

.modern-form-label {
  @apply block text-sm font-semibold text-slate-700 mb-2;
}

.modern-form-input {
  @apply w-full px-4 py-3 rounded-xl border border-slate-300;
  @apply focus:ring-2 focus:ring-brand-primary/50 focus:border-brand-primary;
  @apply transition-all duration-300;
  @apply bg-white/80 backdrop-blur-sm;
}

.modern-form-input:focus {
  @apply bg-white;
  box-shadow: 0 0 20px rgba(8, 145, 178, 0.1);
}

.modern-form-textarea {
  @apply modern-form-input;
  min-height: 120px;
  resize: vertical;
}

.modern-btn-submit {
  @apply modern-btn-primary w-full justify-center py-4 text-lg;
}

/* =============================================================================
   MODERN MODAL COMPONENTS
   ============================================================================= */

.modern-modal-overlay {
  @apply fixed inset-0 bg-slate-900/80 backdrop-blur-sm z-50;
  @apply flex items-center justify-center p-4;
}

.modern-modal {
  @apply bg-white rounded-2xl shadow-2xl max-w-lg w-full;
  @apply transform transition-all duration-300;
  backdrop-filter: blur(12px);
}

.modern-modal-header {
  @apply p-6 border-b border-slate-200;
}

.modern-modal-title {
  @apply text-xl font-semibold text-slate-900;
}

.modern-modal-body {
  @apply p-6;
}

.modern-modal-footer {
  @apply p-6 border-t border-slate-200 flex justify-end gap-3;
}

/* =============================================================================
   RESPONSIVE DESIGN - Mobile First Approach
   ============================================================================= */

/* Mobile First - Base styles are mobile, then we enhance for larger screens */

/* Mobile (up to 767px) - Default styles */
.modern-hero {
  padding: 60px 0;
  min-height: 80vh;
}

.modern-hero-content {
  padding: 0 1rem;
}

.modern-hero-title {
  font-size: 2.5rem; /* 40px */
  line-height: 1.1;
  margin-bottom: 1.5rem;
}

.modern-hero-subtitle {
  font-size: 1rem; /* 16px */
  line-height: 1.6;
  margin-bottom: 2rem;
}

/* CTA Buttons - stacked on mobile */
.modern-hero .flex.flex-col.sm\:flex-row {
  flex-direction: column;
  gap: 1rem;
}

.modern-btn-primary,
.modern-btn-outline {
  width: 100%;
  justify-content: center;
  padding: 1rem 2rem;
}

/* Stats - 2x2 grid on mobile */
.stats-showcase .grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  text-align: center;
}

.stat-group .text-4xl {
  font-size: 2rem;
}

/* About Section - single column on mobile */
.modern-container .md\:grid-cols-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

/* Testimonials - single column on mobile */
.modern-container .md\:grid-cols-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

/* Insurance badges - smaller on mobile */
.flex.flex-wrap.justify-center.gap-4 > div {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

/* Adjust padding for mobile */
.modern-section {
  padding: 3rem 0;
}

.modern-container {
  padding: 0 1rem;
}

/* Tablet (768px and up) */
@media (min-width: 768px) {
  .modern-hero {
    padding: 80px 0;
    min-height: 70vh;
  }

  .modern-hero-content {
    padding: 0 2rem;
  }

  .modern-hero-title {
    font-size: 3.5rem; /* 56px */
  }

  .modern-hero-subtitle {
    font-size: 1.125rem; /* 18px */
  }

  /* CTA Buttons - side by side on tablet */
  .modern-hero .flex.flex-col.sm\:flex-row {
    flex-direction: row;
    justify-content: center;
  }

  .modern-btn-primary,
  .modern-btn-outline {
    width: auto;
  }

  /* Stats - still 2x2 but larger */
  .stat-group .text-4xl {
    font-size: 2.5rem;
  }

  /* About Section - two columns on tablet */
  .modern-container .md\:grid-cols-2 {
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
  }

  /* Testimonials - 2 columns on tablet */
  .modern-container .md\:grid-cols-3 {
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
  }

  .modern-container .md\:grid-cols-3 > div:nth-child(3n) {
    grid-column: 1 / -1;
  }

  /* Adjust padding for tablet */
  .modern-section {
    padding: 4rem 0;
  }

  .modern-container {
    padding: 0 2rem;
  }
}

/* Desktop (1024px and up) */
@media (min-width: 1024px) {
  .modern-hero {
    padding: 120px 0;
    min-height: 90vh;
  }

  .modern-hero-title {
    font-size: 4.5rem; /* 72px */
  }

  .modern-hero-subtitle {
    font-size: 1.25rem; /* 20px */
  }

  /* Stats - keep 2x2 but with full spacing */
  .stat-group .text-4xl {
    font-size: 3rem;
  }

  /* About Section - keep two columns */
  .modern-container .md\:grid-cols-2 {
    gap: 4rem;
  }

  /* Testimonials - 3 columns on desktop */
  .modern-container .md\:grid-cols-3 {
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
  }

  .modern-container .md\:grid-cols-3 > div:nth-child(3n) {
    grid-column: auto;
  }

  /* Adjust padding for desktop */
  .modern-section {
    padding: 6rem 0;
  }
}

/* Large Desktop (1280px and up) */
@media (min-width: 1280px) {
  .modern-hero-title {
    font-size: 5rem; /* 80px */
  }
}

/* Landscape orientation adjustments for mobile */
@media (max-height: 600px) and (orientation: landscape) {
  .modern-hero {
    min-height: auto;
    padding: 60px 0 40px;
  }

  .modern-hero-title {
    font-size: 2rem; /* 32px on landscape */
    margin-bottom: 1rem;
  }

  .modern-hero-subtitle {
    font-size: 0.875rem; /* 14px */
    margin-bottom: 1.5rem;
  }
}

/* Touch-friendly adjustments */
@media (hover: none) and (pointer: coarse) {
  /* Larger tap targets for touch devices */
  .modern-btn-primary,
  .modern-btn-outline {
    min-height: 48px; /* iOS recommendation */
    min-width: 48px;
  }

  /* Remove hover effects on touch */
  .modern-service-card:hover {
    transform: none;
  }

  .modern-service-card:active {
    transform: scale(0.98);
  }
}

/* =============================================================================
   ACCESSIBILITY ENHANCEMENTS
   ============================================================================= */

/* Focus States */
.modern-nav-link:focus,
.modern-btn-primary:focus,
.modern-form-input:focus {
  @apply outline-none ring-2 ring-brand-primary ring-offset-2;
  ring-offset-color: transparent;
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
  :root {
    --glass-bg: rgba(255, 255, 255, 0.9);
    --glass-border: rgba(0, 0, 0, 0.3);
  }
}

/* =============================================================================
   SECTION SPACING
   ============================================================================= */

.modern-section {
  padding: 6rem 0;
}

.modern-section-sm {
  padding: 4rem 0;
}

.modern-section-lg {
  padding: 8rem 0;
}

.modern-container {
  max-width: 72rem;
  margin: 0 auto;
  padding: 0 2rem;
}

/* =============================================================================
   UTILITIES
   ============================================================================= */

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

.modern-shadow-glow {
  box-shadow: 0 0 30px rgba(8, 145, 178, 0.2);
}

.modern-backdrop-blur {
  backdrop-filter: blur(12px);
}

/* Breathing room utilities */
.breathing-room-top {
  margin-top: 4rem;
}

.breathing-room-bottom {
  margin-bottom: 4rem;
}

.breathing-room {
  margin: 4rem 0;
}