/* MediMindLab Company Website - Main Stylesheet */
/* Design System v2: "Clinical Warmth" */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,600;9..144,700&family=Inter:wght@400;500;600&display=swap');

/* ==================== CSS Variables ==================== */
:root {
  /* Brand Colors (from MediWing Design System) */
  --mediwing-sage: #7C9885;
  --mediwing-sage-dark: #5A7463;
  --mediwing-sage-light: #A8C4B0;
  --mediwing-coral: #E07856;
  --mediwing-coral-dark: #C65A3A;
  --mediwing-coral-light: #F0A68F;

  /* Neutrals (Warm) */
  --mediwing-cream: #FAF7F2;
  --mediwing-sand: #E8E3DA;
  --mediwing-stone: #4A4A44;
  --mediwing-ash: #8B8B82;

  /* Semantic Aliases */
  --primary: var(--mediwing-sage);
  --primary-dark: var(--mediwing-sage-dark);
  --primary-light: var(--mediwing-sage-light);
  --secondary: var(--mediwing-coral);
  --secondary-dark: var(--mediwing-coral-dark);
  --secondary-light: var(--mediwing-coral-light);
  
  --text-primary: var(--mediwing-stone);
  --text-secondary: var(--mediwing-ash);
  --bg-primary: var(--mediwing-cream);
  --bg-secondary: var(--mediwing-sand);
  --border-color: var(--mediwing-sand);
  --white: #FFFFFF;

  /* Typography */
  --font-display: 'Fraunces', serif;
  --font-sans: 'Inter', sans-serif;
  --font-size-base: 16px;
  --line-height-base: 1.6;

  /* Type Scale */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;

  /* Spacing */
  --spacing-xs: 0.5rem;   /* 8px */
  --spacing-sm: 1rem;     /* 16px */
  --spacing-md: 1.5rem;   /* 24px */
  --spacing-lg: 3rem;     /* 48px */
  --spacing-xl: 5rem;     /* 80px */

  /* Layout */
  --container-max: 1280px;
  --container-padding: 2rem;
  --radius-card: 16px;
  --radius-btn: 12px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(74, 74, 68, 0.06);
  --shadow-md: 0 4px 16px rgba(74, 74, 68, 0.08);
  --shadow-lg: 0 8px 24px rgba(74, 74, 68, 0.12);
  --shadow-coral: 0 4px 16px rgba(224, 120, 86, 0.25);
}

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

html {
  font-size: var(--font-size-base);
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  line-height: var(--line-height-base);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  background-image: 
    radial-gradient(circle at 20% 50%, rgba(124, 152, 133, 0.03) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(224, 120, 86, 0.03) 0%, transparent 50%);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ==================== Typography ==================== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

h1 { font-size: var(--text-4xl); }
h2 { font-size: var(--text-3xl); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }
p {
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
  max-width: 65ch; /* Improve readability */
}
a {
  color: var(--primary-dark);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
}
a:hover { color: var(--secondary); }

/* ==================== Layout Utilities ==================== */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}
.section { padding: var(--spacing-xl) 0; }
.section-alt {
  background-color: rgba(232, 227, 218, 0.4); /* transparent sand */
}

/* ==================== Header & Navigation ==================== */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: 72px;
  background: rgba(250, 247, 242, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(124, 152, 133, 0.1);
  transition: var(--transition);
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
}

.logo {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--primary-dark);
  text-decoration: none;
}

.logo-text {
  display: block;
}

.logo-motto {
  display: block;
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--text-secondary);
  font-family: var(--font-sans);
  margin-top: -5px;
}
.logo:hover { color: var(--primary-dark); }

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

.nav-link {
  color: var(--text-primary);
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-btn);
  transition: var(--transition);
}
.nav-link:hover, .nav-link.active {
  background-color: rgba(124, 152, 133, 0.1);
  color: var(--primary-dark);
}
.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-primary);
}

/* ==================== Hero Section ==================== */
.hero {
  padding: var(--spacing-xl) 0;
  text-align: center;
  min-height: 450px;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(124, 152, 133, 0.1) 0%, transparent 70%);
  border-radius: 50%;
  z-index: -1;
}
.hero-content {
  max-width: 800px;
  margin: 0 auto;
}
.hero h1 {
  font-size: var(--text-4xl);
  font-weight: 700;
}
.hero p {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  margin: var(--spacing-md) auto;
}

/* ==================== Buttons ==================== */
.btn {
  display: inline-block;
  padding: 12px 32px;
  font-size: 1rem;
  font-weight: 600;
  text-align: center;
  border-radius: var(--radius-btn);
  transition: var(--transition);
  border: 2px solid transparent;
  cursor: pointer;
}
.btn-primary {
  background: var(--secondary);
  color: var(--white);
  box-shadow: var(--shadow-coral);
}
.btn-primary:hover {
  background: var(--secondary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(224, 120, 86, 0.35);
  color: var(--white);
}
.btn-secondary {
  background: transparent;
  color: var(--primary-dark);
  border: 2px solid var(--primary);
}
.btn-secondary:hover {
  background: var(--primary);
  color: var(--white);
}

/* ==================== Cards ==================== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}
.card {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  padding: var(--spacing-md);
  box-shadow: var(--shadow-md);
  transition: var(--transition);
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-light);
}
.card-icon {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-sm);
  color: var(--primary);
}
.card h3 {
  color: var(--primary-dark);
  margin-bottom: var(--spacing-sm);
}
.card p { color: var(--text-secondary); }

/* ==================== Forms ==================== */
.form-group { margin-bottom: var(--spacing-md); }
.form-label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 500;
}
.form-input, .form-textarea {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-btn);
  font-family: var(--font-sans);
  font-size: 1rem;
  transition: var(--transition);
  background: var(--white);
}
.form-input:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(124, 152, 133, 0.1);
}
.form-textarea {
  resize: vertical;
  min-height: 150px;
}
.form-error {
  color: var(--secondary-dark);
  font-size: var(--text-sm);
  margin-top: var(--spacing-xs);
  display: none;
}
.form-group.error .form-error { display: block; }
.form-group.error .form-input, .form-group.error .form-textarea {
  border-color: var(--secondary-dark);
}
.form-success {
  background-color: rgba(124, 152, 133, 0.1);
  color: var(--primary-dark);
  padding: var(--spacing-md);
  border-radius: var(--radius-card);
  margin-bottom: var(--spacing-md);
  display: none;
}

/* ==================== Footer ==================== */
.footer {
  background-color: var(--mediwing-stone);
  color: var(--mediwing-cream);
  padding: var(--spacing-lg) 0 var(--spacing-md);
  margin-top: var(--spacing-xl);
}
.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}
.footer-section h4 {
  color: var(--white);
  font-family: var(--font-display);
}
.footer-links { list-style: none; }
.footer-links li { margin-bottom: var(--spacing-xs); }
.footer-links a {
  color: var(--mediwing-ash);
  font-weight: 400;
}
.footer-links a:hover { color: var(--white); }
.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-md);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--mediwing-ash);
  font-size: var(--text-sm);
}

/* ==================== Responsive Design ==================== */
@media (max-width: 768px) {
  :root {
    --container-padding: 1.5rem;
    --spacing-xl: 4rem;
    --text-4xl: 2rem;
    --text-3xl: 1.75rem;
  }
  .nav-menu {
    position: fixed;
    left: -100%;
    top: 72px;
    flex-direction: column;
    background-color: var(--bg-primary);
    width: 100%;
    text-align: center;
    transition: left 0.3s ease;
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-md) 0;
    gap: 0;
  }
  .nav-menu.active { left: 0; }
  .nav-link {
    display: block;
    padding: var(--spacing-sm);
    width: 100%;
  }
  .menu-toggle { display: block; }
}

@media (max-width: 480px) {
  :root { --container-padding: 1rem; }
  .btn {
    width: 100%;
    padding: 1rem;
  }
  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
}

/* ==================== 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;
}
a:focus, button:focus, input:focus, textarea:focus {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}

/* ==================== Overrides & Additions ==================== */
/* Remove default gradients from original design */
.logo-text, .hero h1 {
  background: none;
  -webkit-background-clip: unset;
  -webkit-text-fill-color: unset;
  background-clip: unset;
}
.hero { background: none; }

/* Apply new text styles */
.logo { color: var(--primary-dark); }
.hero h1 { color: var(--text-primary); }

/* Product Showcase - maintain some original structure */
.product-showcase {
  display: flex;
  gap: var(--spacing-lg);
  align-items: center;
  margin-top: var(--spacing-md);
}
.product-image {
  flex: 1;
  max-width: 500px;
}
.product-image img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-lg);
}
.product-content { flex: 1; }
.product-content h2 { color: var(--primary-dark); }
.product-features { list-style: none; margin: var(--spacing-md) 0; }
.product-features li {
  padding: 0.5rem 0 0.5rem 1.5rem;
  position: relative;
}
.product-features li:before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: bold;
}

/* ==================== Animations ==================== */

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes shimmer {
  0% { background-position: -1000px 0; }
  100% { background-position: 1000px 0; }
}

.animate-fade-in-up {
  animation: fadeInUp 0.6s cubic-bezier(0.4, 0, 0.2, 1) forwards;
  opacity: 0;
}

.animate-shimmer {
  background: linear-gradient(to right, 
    var(--bg-secondary) 4%, 
    #E1DCD1 25%, 
    var(--bg-secondary) 36%
  );
  background-size: 1000px 100%;
  animation: shimmer 2s infinite;
}

/* Staggered animation for card grids */
.card-grid .card {
  opacity: 0;
  animation: fadeInUp 0.6s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.card-grid .card:nth-child(1) { animation-delay: 0.1s; }
.card-grid .card:nth-child(2) { animation-delay: 0.2s; }
.card-grid .card:nth-child(3) { animation-delay: 0.3s; }
.card-grid .card:nth-child(4) { animation-delay: 0.4s; }