/* ============================================
   HEALTHCARE DOCUMENTATION & NURSING CONSULTANCY
   Core Design System & Global Styles
   ============================================ */

/* ============================================
   IMPORTS
   ============================================ */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700;800&display=swap');

/* ============================================
   CSS CUSTOM PROPERTIES (DESIGN TOKENS)
   ============================================ */
:root {
  /* Colors - Healthcare Theme */
  --color-primary: #4A90E2;
  --color-primary-light: #5CB3FF;
  --color-primary-dark: #2E5C8A;
  --color-secondary: #66D9EF;
  --color-accent: #00C9A7;

  /* Neutrals */
  --color-white: #FFFFFF;
  --color-light: #F8FBFF;
  --color-light-blue: #EBF5FF;
  --color-gray-100: #F5F7FA;
  --color-gray-200: #E4E9F0;
  --color-gray-300: #C5CEE0;
  --color-gray-400: #8F9BB3;
  --color-gray-600: #5A6D8A;
  --color-gray-800: #2E3A59;
  --color-dark: #1A2332;

  /* Gradients - REMOVED for professional restraint */
  /* Use solid colors instead */
  --color-primary-bg: #4A90E2;
  --color-overlay-dark: rgba(26, 35, 50, 0.85);

  /* Typography */
  --font-primary: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-weight-light: 300;
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;

  /* Font Sizes - Conservative Professional Scale */
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.75rem;
  --font-size-4xl: 2rem;
  --font-size-5xl: 2.5rem;
  --font-size-6xl: 3rem;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 6rem;

  /* Border Radius - Professional/Conservative */
  --radius-sm: 2px;
  --radius-md: 4px;
  --radius-lg: 6px;
  --radius-xl: 8px;
  --radius-full: 4px;

  /* Shadows - Subtle and Professional */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 4px 12px rgba(0, 0, 0, 0.12);
  --shadow-xl: 0 8px 20px rgba(0, 0, 0, 0.15);
  --shadow-glow: 0 0 12px rgba(74, 144, 226, 0.2);

  /* Transitions - Faster and More Subtle */
  --transition-fast: 100ms ease-out;
  --transition-base: 200ms ease-out;
  --transition-slow: 300ms ease-out;
  --transition-bounce: 300ms ease-out;

  /* Z-index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-tooltip: 1070;
}

/* ============================================
   RESET & BASE STYLES
   ============================================ */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-primary);
  font-weight: var(--font-weight-regular);
  line-height: 1.8;
  color: var(--color-gray-800);
  background-color: var(--color-white);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: var(--font-weight-bold);
  line-height: 1.2;
  color: var(--color-dark);
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: var(--font-size-5xl);
  font-weight: var(--font-weight-extrabold);
}

h2 {
  font-size: var(--font-size-4xl);
}

h3 {
  font-size: var(--font-size-3xl);
}

h4 {
  font-size: var(--font-size-2xl);
}

h5 {
  font-size: var(--font-size-xl);
}

h6 {
  font-size: var(--font-size-lg);
}

p {
  margin-bottom: var(--spacing-sm);
  color: var(--color-gray-600);
  line-height: 1.8;
}

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

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

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

.container-wide {
  max-width: 1400px;
}

.section {
  padding: var(--spacing-3xl) 0;
  position: relative;
}

.section-sm {
  padding: var(--spacing-2xl) 0;
}

.section-lg {
  padding: 5rem 0;
}

/* Grid System */
.grid {
  display: grid;
  gap: var(--spacing-lg);
}

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

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

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

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

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

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

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

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  text-align: center;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  text-decoration: none;
}

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

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

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

.btn-secondary {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn-secondary:hover {
  background: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-1px);
}

.btn-lg {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-lg);
}

.btn-icon {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
}

/* Ripple Effect */
.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition: width var(--transition-slow), height var(--transition-slow);
}

.btn:active::before {
  width: 300px;
  height: 300px;
}

/* ============================================
   CARDS
   ============================================ */
.card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.card-glass {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.card-gradient h1,
.card-gradient h2,
.card-gradient h3,
.card-gradient h4,
.card-gradient h5,
.card-gradient h6 {
  color: var(--color-white);
}

.card-gradient p {
  color: rgba(255, 255, 255, 0.9);
}

/* ============================================
   NAVIGATION
   ============================================ */
/* ============================================
   NAVIGATION
   ============================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.3);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.05);
  z-index: var(--z-fixed);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  padding: 1rem 0;
}

.navbar.scrolled {
  padding: 0.5rem 0;
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.navbar-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--spacing-lg);
  max-width: 1400px;
  margin: 0 auto;
}

.navbar-logo {
  display: flex;
  align-items: center;
  transform-origin: center;
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  /* Initial state for entry animation */
  opacity: 0;
  animation: slideDownFade 0.8s ease-out forwards 0.2s;
}

.navbar-logo:hover {
  transform: scale(1.05) rotate(-2deg);
}

.navbar-logo img {
  height: 60px;
  width: auto;
  transition: height 0.3s ease;
}

.navbar.scrolled .navbar-logo img {
  height: 50px;
}

.logo-text {
  font-family: var(--font-primary);
  font-weight: 700;
  font-size: 1.25rem;
  color: #233559;
  margin-left: 0.75rem;
  letter-spacing: 0.02em;
  white-space: nowrap;
  transition: all 0.3s ease;
  text-transform: uppercase;
}

.navbar.scrolled .logo-text {
  font-size: 1.15rem;
}

.navbar-menu {
  display: flex;
  gap: 2rem;
  list-style: none;
  align-items: center;
}

.navbar-menu li {
  /* Initial state for entry animation */
  opacity: 0;
  transform: translateY(-20px);
}

/* Staggered entry animation for menu items */
.navbar-menu li:nth-child(1) {
  animation: slideDownFade 0.5s ease-out forwards 0.3s;
}

.navbar-menu li:nth-child(2) {
  animation: slideDownFade 0.5s ease-out forwards 0.4s;
}

.navbar-menu li:nth-child(3) {
  animation: slideDownFade 0.5s ease-out forwards 0.5s;
}

.navbar-menu li:nth-child(4) {
  animation: slideDownFade 0.5s ease-out forwards 0.6s;
}

.navbar-menu li:nth-child(5) {
  animation: slideDownFade 0.5s ease-out forwards 0.7s;
}

.navbar-menu li:nth-child(6) {
  animation: slideDownFade 0.5s ease-out forwards 0.8s;
}

.navbar-link {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--color-gray-800);
  transition: color 0.3s ease;
  position: relative;
  padding: 0.5rem 0.75rem;
  border-radius: 50px;
  overflow: hidden;
  z-index: 1;
  white-space: nowrap;
}

/* Unique Hover Effect: Sliding Pill Background */
.navbar-link::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--color-primary);
  opacity: 0;
  transform: scaleX(0.5);
  transform-origin: center;
  border-radius: 50px;
  z-index: -1;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.navbar-link:hover,
.navbar-link.active {
  color: var(--color-white);
}

.navbar-link:hover::before,
.navbar-link.active::before {
  opacity: 1;
  transform: scaleX(1);
}

/* Remove old underline effect */
.navbar-link::after {
  display: none;
}

.navbar-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  z-index: 1001;
  /* Ensure above mobile menu */
}

.navbar-toggle span {
  width: 28px;
  height: 3px;
  background: var(--color-gray-800);
  border-radius: 3px;
  transition: all 0.3s ease;
}

/* Toggle Animation */
.navbar-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(7px, 6px);
  background: var(--color-primary);
}

.navbar-toggle.active span:nth-child(2) {
  opacity: 0;
  transform: translateX(-10px);
}

.navbar-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
  background: var(--color-primary);
}

/* Keyframes for new animations */
@keyframes slideDownFade {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background: var(--color-dark);
  color: var(--color-gray-300);
  padding: var(--spacing-3xl) 0 var(--spacing-lg);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-section h4 {
  color: var(--color-white);
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-lg);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--spacing-xs);
}

.footer-links a {
  color: var(--color-gray-300);
  transition: color var(--transition-base);
}

.footer-links a:hover {
  color: var(--color-primary-light);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--spacing-lg);
  text-align: center;
  color: var(--color-gray-400);
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideRight {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes float {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-20px);
  }
}

@keyframes pulse {

  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }

  50% {
    opacity: 0.8;
    transform: scale(1.05);
  }
}

@keyframes glow {

  0%,
  100% {
    box-shadow: 0 0 20px rgba(74, 144, 226, 0.3);
  }

  50% {
    box-shadow: 0 0 40px rgba(74, 144, 226, 0.6);
  }
}

@keyframes rotate {
  from {
    transform: rotate(0deg);
  }

  to {
    transform: rotate(360deg);
  }
}

/* Animation Classes */
.animate-fade-in {
  animation: fadeIn var(--transition-slow) ease-out;
}

.animate-fade-up {
  animation: fadeUp var(--transition-slow) ease-out;
}

.animate-slide-right {
  animation: slideRight var(--transition-slow) ease-out;
}

.animate-float {
  animation: float 3s ease-in-out infinite;
}

.animate-pulse {
  animation: pulse 2s ease-in-out infinite;
}

.animate-glow {
  animation: glow 2s ease-in-out infinite;
}

/* Scroll Reveal */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: all var(--transition-slow);
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger Children */
.stagger-children>* {
  opacity: 0;
  transform: translateY(20px);
  transition: all var(--transition-base);
}

.stagger-children.active>*:nth-child(1) {
  transition-delay: 0ms;
}

.stagger-children.active>*:nth-child(2) {
  transition-delay: 100ms;
}

.stagger-children.active>*:nth-child(3) {
  transition-delay: 200ms;
}

.stagger-children.active>*:nth-child(4) {
  transition-delay: 300ms;
}

.stagger-children.active>*:nth-child(5) {
  transition-delay: 400ms;
}

.stagger-children.active>*:nth-child(6) {
  transition-delay: 500ms;
}

.stagger-children.active>* {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.text-center {
  text-align: center;
}

.text-gradient {
  background: var(--color-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.bg-light {
  background-color: var(--color-light);
}

.bg-gradient {
  background: var(--color-primary);
}

.section-title {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  text-align: center;
  margin-bottom: var(--spacing-xl);
  position: relative;
}

.section-title::after {
  content: '';
  display: block;
  width: 80px;
  height: 4px;
  background: var(--color-primary);
  margin: var(--spacing-md) auto 0;
  border-radius: var(--radius-full);
}

/* Glassmorphism */
.glass {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  box-shadow: var(--shadow-lg);
}

/* Scroll to Top Button */
.scroll-top {
  position: fixed;
  bottom: var(--spacing-lg);
  right: var(--spacing-lg);
  width: 50px;
  height: 50px;
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  z-index: var(--z-fixed);
}

.scroll-top.visible {
  opacity: 1;
  visibility: visible;
}

.scroll-top:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 1024px) {
  :root {
    --font-size-5xl: 2.5rem;
    --font-size-4xl: 2rem;
    --font-size-3xl: 1.75rem;
  }

  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (max-width: 768px) {
  :root {
    --font-size-5xl: 2rem;
    --font-size-4xl: 1.75rem;
    --font-size-3xl: 1.5rem;
    --spacing-3xl: 4rem;
  }

  .container {
    padding: 0 var(--spacing-sm);
  }

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

  .logo-text {
    display: none;
  }

  .navbar-menu {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--color-white);
    flex-direction: column;
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
    transform: translateY(-120%);
    transition: transform var(--transition-base);
  }

  .navbar-menu.active {
    transform: translateY(0);
  }

  .navbar-menu li {
    opacity: 1;
    transform: none;
    animation: none;
  }

  .navbar-toggle {
    display: flex;
  }

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

@media (max-width: 480px) {
  :root {
    --font-size-5xl: 1.75rem;
    --font-size-4xl: 1.5rem;
    --spacing-2xl: 2.5rem;
    --spacing-3xl: 3rem;
  }

  .navbar-logo img {
    height: 45px;
  }

  .btn-lg {
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-base);
  }
}

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

/* Focus Styles */
*:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

/* Reduce Motion */
@media (prefers-reduced-motion: reduce) {

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

/* ============================================
   GLOBAL WHATSAPP FLOATING BUTTON
   ============================================ */
.whatsapp-float {
  position: fixed;
  bottom: var(--spacing-xl);
  right: var(--spacing-xl);
  width: 60px;
  height: 60px;
  background: #25D366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-3xl);
  color: var(--color-white);
  box-shadow: var(--shadow-xl);
  cursor: pointer;
  transition: all var(--transition-base);
  z-index: var(--z-modal);
  /* High z-index */
  text-decoration: none;
  animation: pulse 2s ease-in-out infinite;
}

.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 8px 24px rgba(37, 211, 102, 0.4);
  color: var(--color-white);
}

.whatsapp-float:active {
  transform: scale(0.95);
}

@media (max-width: 768px) {
  .whatsapp-float {
    width: 50px;
    height: 50px;
    bottom: 20px;
    right: 20px;
    font-size: 1.5rem;
  }
}