/* ============================================
   Senior Care Charity Website - Design System
   ============================================ */

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

/* ============================================
   CSS Variables - Design Tokens
   ============================================ */
:root {
  /* Premium Color Palette - Strategic Gradients */
  --color-primary-dark: #1e3a8a;
  --color-primary: #2563eb;
  --color-primary-light: #60a5fa;

  --color-accent-dark: #0891b2;
  --color-accent: #06b6d4;
  --color-accent-light: #67e8f9;

  /* Soft Neutrals for Supporting Sections */
  --color-white: #ffffff;
  --color-neutral-50: #fafbfc;
  --color-neutral-100: #f5f7fa;
  --color-neutral-200: #e8ecf1;
  --color-neutral-300: #dce1e8;

  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;

  /* Strategic Gradient Palette */
  --gradient-hero: linear-gradient(135deg, #1e3a8a 0%, #0891b2 50%, #2563eb 100%);
  --gradient-subtle: linear-gradient(180deg, rgba(37, 99, 235, 0.03) 0%, rgba(6, 182, 212, 0.03) 100%);
  --gradient-accent: linear-gradient(135deg, #06b6d4 0%, #2563eb 100%);
  --gradient-footer: linear-gradient(180deg, #1f2937 0%, #111827 100%);

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-base: 18px;
  --font-size-small: 16px;
  --font-size-large: 20px;
  --line-height-base: 1.7;
  --line-height-tight: 1.25;

  /* Spacing - Apple-inspired */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2.5rem;
  --spacing-xl: 4rem;
  --spacing-2xl: 5rem;
  --spacing-3xl: 7rem;

  /* Border Radius - Softer */
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;

  /* Transitions - Smooth */
  --transition-fast: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 450ms cubic-bezier(0.4, 0, 0.2, 1);

  /* Shadows - Subtle Depth */
  --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.04);
  --shadow-md: 0 4px 12px rgb(0 0 0 / 0.06);
  --shadow-lg: 0 12px 24px rgb(0 0 0 / 0.08);
  --shadow-xl: 0 24px 48px rgb(0 0 0 / 0.1);
}

/* ============================================
   Reset & Base Styles
   ============================================ */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  color: var(--color-gray-800);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ============================================
   Typography
   ============================================ */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  line-height: var(--line-height-tight);
  color: var(--color-gray-900);
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: 3rem;
  font-weight: 800;
  letter-spacing: -0.025em;
}

h2 {
  font-size: 2.25rem;
  font-weight: 700;
}

h3 {
  font-size: 1.875rem;
  font-weight: 600;
}

h4 {
  font-size: 1.5rem;
  font-weight: 600;
}

h5 {
  font-size: 1.25rem;
  font-weight: 600;
}

h6 {
  font-size: 1.125rem;
  font-weight: 600;
}

p {
  margin-bottom: var(--spacing-md);
}

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

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

a:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

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

.container-wide {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

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

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

/* ============================================
   Navigation
   ============================================ */
.navbar {
  background-color: #f1f1f1;
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid var(--color-gray-200);
}

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

.navbar-logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

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

.logo-image {
  height: 40px;
  width: auto;
  display: block;
}

.navbar-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
  align-items: center;
}

.navbar-link {
  color: var(--color-gray-700);
  font-weight: 500;
  font-size: var(--font-size-small);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

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

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

/* Mobile menu toggle */
.navbar-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--color-gray-700);
  cursor: pointer;
  padding: var(--spacing-xs);
}

/* ============================================
   Buttons
   ============================================ */
.btn {
  display: inline-block;
  padding: 0.875rem 2rem;
  font-size: var(--font-size-small);
  font-weight: 600;
  text-align: center;
  border-radius: var(--radius-lg);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  font-family: var(--font-family);
}

.btn:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

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

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

.btn-secondary {
  background-color: var(--color-accent);
  color: var(--color-white);
  border-color: var(--color-accent);
}

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

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

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

.btn-large {
  padding: 1.125rem 2.5rem;
  font-size: var(--font-size-large);
}

/* ============================================
   Hero Section - Strategic Gradient Emphasis
   ============================================ */
.hero {
  background: var(--gradient-hero);
  color: var(--color-white);
  padding: var(--spacing-3xl) 0;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 30% 50%, rgba(6, 182, 212, 0.15) 0%, transparent 50%);
  pointer-events: none;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-text h1 {
  color: var(--color-white);
  font-size: 3.5rem;
  margin-bottom: var(--spacing-md);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.hero-text p {
  font-size: 1.25rem;
  color: rgba(255, 255, 255, 0.95);
  margin-bottom: var(--spacing-xl);
  line-height: 1.65;
  font-weight: 400;
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.hero-image {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.3);
}

.hero-image img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ============================================
   Cards - Premium Depth & Subtle Hover
   ============================================ */
.card {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  border: 1px solid rgba(0, 0, 0, 0.04);
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}

.card-lift {
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

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

.card-icon {
  width: 3.5rem;
  height: 3.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-accent-light), var(--color-primary-light));
  color: var(--color-primary-dark);
  border-radius: var(--radius-md);
  font-size: 1.75rem;
  margin-bottom: var(--spacing-md);
  box-shadow: 0 4px 16px rgba(6, 182, 212, 0.15);
}

.card-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-gray-900);
  margin-bottom: var(--spacing-sm);
  letter-spacing: -0.01em;
}

.card-description {
  color: var(--color-gray-700);
  line-height: 1.7;
  font-size: 1rem;
}

/* ============================================
   Grid Layouts
   ============================================ */
.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);
}

/* ============================================
   Forms
   ============================================ */
.form-group {
  margin-bottom: var(--spacing-md);
}

.form-label {
  display: block;
  font-weight: 600;
  font-size: var(--font-size-small);
  color: var(--color-gray-800);
  margin-bottom: var(--spacing-xs);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.875rem 1rem;
  font-size: var(--font-size-small);
  font-family: var(--font-family);
  color: var(--color-gray-800);
  background-color: var(--color-white);
  border: 2px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.1);
}

.form-textarea {
  resize: vertical;
  min-height: 150px;
}

/* ============================================
   Footer - Strategic Gradient Emphasis
   ============================================ */
.footer {
  background: var(--gradient-footer);
  color: var(--color-gray-100);
  padding: var(--spacing-2xl) 0 var(--spacing-lg);
  position: relative;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, rgba(6, 182, 212, 0.3) 50%, transparent 100%);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-section h3 {
  color: var(--color-white);
  font-size: 1.25rem;
  margin-bottom: var(--spacing-md);
  font-weight: 600;
}

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

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

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

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

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

/* ============================================
   Utility Classes
   ============================================ */
.text-center {
  text-align: center;
}

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

.text-accent {
  color: var(--color-accent);
}

/* Soft Neutral Backgrounds for Supporting Sections */
.bg-gray {
  background-color: var(--color-neutral-50);
}

.bg-neutral {
  background: var(--gradient-subtle);
  background-color: var(--color-neutral-100);
}

/* Strategic Gradient Emphasis Areas */
.bg-primary {
  background: var(--gradient-accent);
  color: var(--color-white);
}

.bg-gradient-soft {
  background: linear-gradient(180deg, var(--color-neutral-50) 0%, var(--color-white) 100%);
}

.mb-sm {
  margin-bottom: var(--spacing-sm);
}

.mb-md {
  margin-bottom: var(--spacing-md);
}

.mb-lg {
  margin-bottom: var(--spacing-lg);
}

.mb-xl {
  margin-bottom: var(--spacing-xl);
}

.mt-sm {
  margin-top: var(--spacing-sm);
}

.mt-md {
  margin-top: var(--spacing-md);
}

.mt-lg {
  margin-top: var(--spacing-lg);
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1024px) {
  .hero-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }

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

  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
}

@media (max-width: 768px) {
  html {
    font-size: 14px;
  }

  h1 {
    font-size: 2.5rem;
  }

  h2 {
    font-size: 2rem;
  }

  h3 {
    font-size: 1.5rem;
  }

  .navbar-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    flex-direction: column;
    padding: var(--spacing-md);
    box-shadow: var(--shadow-lg);
    gap: var(--spacing-sm);
  }

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

  .navbar-toggle {
    display: block;
  }

  .hero-text h1 {
    font-size: 2.5rem;
  }

  .hero-text p {
    font-size: 1.125rem;
  }

  .hero-buttons {
    flex-direction: column;
  }

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

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

/* ============================================
   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 visible for keyboard navigation */
*:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* High contrast for accessibility */
@media (prefers-contrast: high) {
  :root {
    --color-gray-700: #000000;
    --color-gray-800: #000000;
  }
}

/* Reduced motion for accessibility */
@media (prefers-reduced-motion: reduce) {

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

/* ============================================
   Animations & Scroll Effects
   ============================================ */

/* Fade in from bottom */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }

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

/* Fade in from left */
@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }

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

/* Fade in from right */
@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }

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

/* Scale up fade in */
@keyframes fadeInScale {
  from {
    opacity: 0;
    transform: scale(0.95);
  }

  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Scroll-triggered animation classes */
.animate-on-scroll {
  opacity: 0;
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.animate-on-scroll.animate-in,
.animate-on-scroll.visible {
  opacity: 1;
}

.fade-up {
  transform: translateY(30px);
}

.fade-up.animate-in,
.fade-up.visible {
  transform: translateY(0);
}

.fade-left {
  transform: translateX(-30px);
}

.fade-left.animate-in,
.fade-left.visible {
  transform: translateX(0);
}

.fade-right {
  transform: translateX(30px);
}

.fade-right.animate-in,
.fade-right.visible {
  transform: translateX(0);
}

.fade-scale {
  transform: scale(0.95);
}

.fade-scale.animate-in,
.fade-scale.visible {
  transform: scale(1);
}

/* Stagger animation delays for grid items */
.stagger-1 {
  transition-delay: 0.1s;
}

.stagger-2 {
  transition-delay: 0.2s;
}

.stagger-3 {
  transition-delay: 0.3s;
}

.stagger-4 {
  transition-delay: 0.4s;
}

.stagger-5 {
  transition-delay: 0.5s;
}

/* Enhanced card hover with lift effect */
.card-lift {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.card-lift:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

/* Smooth parallax scroll effect */
.parallax {
  transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* Button pulse animation */
@keyframes pulse {

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

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

.btn-pulse:hover {
  animation: pulse 2s infinite;
}

/* Gradient animation for hero */
@keyframes gradientShift {
  0% {
    background-position: 0% 50%;
  }

  50% {
    background-position: 100% 50%;
  }

  100% {
    background-position: 0% 50%;
  }
}

.hero-animated {
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary), var(--color-accent));
  background-size: 200% 200%;
  animation: gradientShift 15s ease infinite;
}

/* Image reveal animation */
.image-reveal {
  overflow: hidden;
  position: relative;
}

.image-reveal::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--color-primary);
  transform: translateX(-100%);
  transition: transform 0.8s cubic-bezier(0.77, 0, 0.175, 1);
  z-index: 1;
}

.image-reveal.animate-in::before {
  transform: translateX(100%);
}

/* Text highlight animation */
.text-highlight {
  background: linear-gradient(to right, var(--color-accent-light) 0%, var(--color-accent-light) 100%);
  background-size: 0% 100%;
  background-repeat: no-repeat;
  background-position: left center;
  transition: background-size 0.5s ease;
  padding: 0 4px;
}

.text-highlight.animate-in {
  background-size: 100% 100%;
}

/* Loading bar animation */
@keyframes progressBar {
  0% {
    width: 0%;
  }

  100% {
    width: 100%;
  }
}

.progress-bar {
  height: 4px;
  background: var(--color-accent);
  animation: progressBar 2s ease-out forwards;
}