/* ============================================
   VITALWELL - Premium Nutra Brand
   Complete Redesign - White-Hat SEO & Google Ads Compliant
   ============================================ */

/* ===== CSS Variables - New Design System ===== */
:root {
  /* Primary Colors - Soft Green Palette */
  --primary-green: #4CAF50;
  --primary-green-dark: #388E3C;
  --primary-green-light: #81C784;
  --primary-green-lighter: #C8E6C9;
  
  /* Neutral Colors */
  --white: #FFFFFF;
  --gray-50: #FAFAFA;
  --gray-100: #F5F5F5;
  --gray-200: #EEEEEE;
  --gray-300: #E0E0E0;
  --gray-400: #BDBDBD;
  --gray-500: #9E9E9E;
  --gray-600: #757575;
  --gray-700: #616161;
  --gray-800: #424242;
  --gray-900: #212121;
  
  /* Accent Colors */
  --accent-blue: #2196F3;
  --accent-orange: #FF9800;
  --success: #4CAF50;
  --warning: #FFC107;
  --error: #F44336;
  --info: #2196F3;
  
  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-secondary: 'Open Sans', sans-serif;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 300ms ease-in-out;
  --transition-slow: 500ms ease-in-out;
  
  /* Layout */
  --container-max-width: 1280px;
  --header-height: 80px;
}

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

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

body {
  font-family: var(--font-primary);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--gray-800);
  background-color: var(--white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  direction: ltr;
  text-align: left;
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-primary);
  font-weight: 700;
  line-height: 1.2;
  color: var(--gray-900);
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.01em;
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 600;
}

h4 {
  font-size: clamp(1.25rem, 2.5vw, 1.5rem);
  font-weight: 600;
}

h5 {
  font-size: 1.125rem;
  font-weight: 600;
}

h6 {
  font-size: 1rem;
  font-weight: 600;
}

p {
  margin-bottom: var(--spacing-md);
  color: var(--gray-700);
  line-height: 1.7;
}

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

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

/* ===== Header & Navigation ===== */
header {
  background: var(--white);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid var(--gray-200);
}

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

.navbar-brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary-green);
  letter-spacing: -0.02em;
}

.navbar-brand:hover {
  color: var(--primary-green-dark);
}

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

.nav-link {
  color: var(--gray-700);
  font-weight: 500;
  font-size: 0.95rem;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  position: relative;
}

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

.nav-link.active {
  color: var(--primary-green);
  font-weight: 600;
}

/* Mobile Menu */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
  color: var(--gray-700);
}

.mobile-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--white);
  box-shadow: var(--shadow-lg);
  border-top: 1px solid var(--gray-200);
  padding: var(--spacing-md);
}

.mobile-menu.active {
  display: block;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.5;
  text-align: center;
  text-decoration: none;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
}

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

.btn-primary:hover {
  background-color: var(--primary-green-dark);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background-color: var(--gray-100);
  color: var(--gray-800);
}

.btn-secondary:hover {
  background-color: var(--gray-200);
  color: var(--gray-900);
}

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

.btn-outline:hover {
  background-color: var(--primary-green);
  color: var(--white);
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1.125rem;
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

/* ===== Cards ===== */
.card {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-200);
  overflow: hidden;
  transition: all var(--transition-base);
}

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

.card-header {
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--gray-200);
  background-color: var(--gray-50);
}

.card-body {
  padding: var(--spacing-lg);
}

.card-footer {
  padding: var(--spacing-lg);
  border-top: 1px solid var(--gray-200);
  background-color: var(--gray-50);
}

.card-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--gray-900);
}

.card-text {
  color: var(--gray-700);
  margin-bottom: var(--spacing-md);
}

/* ===== Product Cards ===== */
.product-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-200);
  overflow: hidden;
  transition: all var(--transition-base);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.product-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: var(--primary-green-light);
}

.product-image {
  width: 100%;
  height: 250px;
  object-fit: cover;
  background-color: var(--gray-100);
}

.product-card-body {
  padding: var(--spacing-lg);
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.product-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--gray-900);
}

.product-description {
  color: var(--gray-600);
  font-size: 0.875rem;
  margin-bottom: var(--spacing-md);
  flex-grow: 1;
}

.product-price {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-green);
  margin-bottom: var(--spacing-md);
}

.product-rating {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-md);
  color: var(--gray-600);
  font-size: 0.875rem;
}

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

.form-label {
  display: block;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--gray-800);
  font-size: 0.875rem;
}

.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: 1rem;
  line-height: 1.5;
  color: var(--gray-900);
  background-color: var(--white);
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-green);
  box-shadow: 0 0 0 3px rgba(76, 175, 80, 0.1);
}

.form-control::placeholder {
  color: var(--gray-400);
}

textarea.form-control {
  resize: vertical;
  min-height: 120px;
}

/* ===== Sections ===== */
.section {
  padding: var(--spacing-3xl) 0;
}

.section-alt {
  background-color: var(--gray-50);
}

.section-title {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.section-subtitle {
  text-align: center;
  color: var(--gray-600);
  font-size: 1.125rem;
  max-width: 600px;
  margin: 0 auto var(--spacing-2xl);
}

/* ===== Hero Section ===== */
.hero {
  background: linear-gradient(135deg, var(--primary-green-lighter) 0%, var(--white) 100%);
  padding: var(--spacing-3xl) 0;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(76, 175, 80, 0.1) 0%, transparent 70%);
  border-radius: 50%;
}

.hero-content {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  position: relative;
  z-index: 1;
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: var(--spacing-lg);
  color: var(--gray-900);
}

.hero-subtitle {
  font-size: clamp(1.125rem, 2vw, 1.5rem);
  color: var(--gray-700);
  margin-bottom: var(--spacing-xl);
  max-width: 600px;
}

/* ===== Grid System ===== */
.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.row {
  display: flex;
  flex-wrap: wrap;
  margin: 0 calc(-1 * var(--spacing-md));
}

.col {
  flex: 1;
  padding: 0 var(--spacing-md);
}

.col-12 { flex: 0 0 100%; max-width: 100%; }
.col-6 { flex: 0 0 50%; max-width: 50%; }
.col-4 { flex: 0 0 33.333333%; max-width: 33.333333%; }
.col-3 { flex: 0 0 25%; max-width: 25%; }

/* ===== Footer ===== */
footer {
  background-color: var(--gray-900);
  color: var(--gray-300);
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
  margin-top: var(--spacing-3xl);
}

.footer-content {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-section h4 {
  color: var(--white);
  margin-bottom: var(--spacing-md);
  font-size: 1.125rem;
}

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

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

.footer-links a {
  color: var(--gray-400);
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  border-top: 1px solid var(--gray-800);
  padding-top: var(--spacing-lg);
  text-align: center;
  color: var(--gray-500);
  font-size: 0.875rem;
}

/* ===== Utilities ===== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }

.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }

.d-flex { display: flex; }
.d-grid { display: grid; }
.d-none { display: none; }

.gap-1 { gap: var(--spacing-xs); }
.gap-2 { gap: var(--spacing-sm); }
.gap-3 { gap: var(--spacing-md); }
.gap-4 { gap: var(--spacing-lg); }

/* ===== Responsive Design ===== */
@media (max-width: 1024px) {
  .col-lg-4 { flex: 0 0 50%; max-width: 50%; }
  .col-lg-6 { flex: 0 0 50%; max-width: 50%; }
  .col-lg-8 { flex: 0 0 100%; max-width: 100%; }
}

@media (max-width: 768px) {
  :root {
    --spacing-xl: 1.5rem;
    --spacing-2xl: 2rem;
    --spacing-3xl: 2.5rem;
    --header-height: 70px;
  }
  
  html {
    font-size: 15px;
  }
  
  .navbar {
    padding: var(--spacing-sm) var(--spacing-md);
  }
  
  .navbar-brand {
    font-size: 1.25rem;
  }
  
  .navbar-nav {
    display: none;
  }
  
  .mobile-menu-toggle {
    display: block;
  }
  
  .mobile-menu {
    display: none;
    flex-direction: column;
    gap: 0;
  }
  
  .mobile-menu.active {
    display: flex;
  }
  
  .mobile-menu .nav-link {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--gray-200);
    width: 100%;
    display: block;
  }
  
  .col-md-6 { flex: 0 0 100%; max-width: 100%; }
  .col-md-4 { flex: 0 0 100%; max-width: 100%; }
  .col-md-3 { flex: 0 0 100%; max-width: 100%; }
  .col-lg-4 { flex: 0 0 100%; max-width: 100%; }
  .col-lg-6 { flex: 0 0 100%; max-width: 100%; }
  .col-lg-8 { flex: 0 0 100%; max-width: 100%; }
  
  .hero {
    padding: var(--spacing-2xl) 0;
  }
  
  .hero-content {
    padding: 0 var(--spacing-md);
  }
  
  .hero-title {
    font-size: clamp(2rem, 8vw, 3rem);
    margin-bottom: var(--spacing-md);
  }
  
  .hero-subtitle {
    font-size: clamp(1rem, 4vw, 1.25rem);
    margin-bottom: var(--spacing-lg);
  }
  
  .section {
    padding: var(--spacing-2xl) 0;
  }
  
  .container {
    padding: 0 var(--spacing-md);
  }
  
  .row {
    margin: 0 calc(-1 * var(--spacing-sm));
  }
  
  .col {
    padding: 0 var(--spacing-sm);
    margin-bottom: var(--spacing-md);
  }
  
  .card {
    margin-bottom: var(--spacing-md);
  }
  
  .card-body {
    padding: var(--spacing-md);
  }
  
  .card-header {
    padding: var(--spacing-md);
  }
  
  .section-title {
    margin-bottom: var(--spacing-xl);
  }
  
  .section-subtitle {
    font-size: 1rem;
    margin-bottom: var(--spacing-xl);
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .btn-lg {
    padding: 0.875rem 1.5rem;
    font-size: 1rem;
    width: 100%;
  }
  
  /* Plan cards mobile */
  .card[style*="transform: scale"] {
    transform: none !important;
  }
  
  /* Image responsiveness */
  img {
    max-width: 100%;
    height: auto;
  }
  
  /* Form controls mobile */
  .form-control {
    font-size: 16px; /* Prevents zoom on iOS */
  }
  
  /* Table responsive */
  table {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
  }
}

@media (max-width: 480px) {
  :root {
    --spacing-md: 0.75rem;
    --spacing-lg: 1rem;
    --spacing-xl: 1.25rem;
    --spacing-2xl: 1.5rem;
    --spacing-3xl: 2rem;
  }
  
  html {
    font-size: 14px;
  }
  
  .navbar {
    padding: var(--spacing-xs) var(--spacing-sm);
  }
  
  .navbar-brand {
    font-size: 1.125rem;
  }
  
  .col-sm-12 { flex: 0 0 100%; max-width: 100%; }
  .col-sm-6 { flex: 0 0 100%; max-width: 100%; }
  
  .btn {
    width: 100%;
    justify-content: center;
    padding: 0.75rem 1rem;
  }
  
  .btn-sm {
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
  }
  
  h1 {
    font-size: 1.75rem;
  }
  
  h2 {
    font-size: 1.5rem;
  }
  
  h3 {
    font-size: 1.25rem;
  }
  
  .hero-title {
    font-size: 1.75rem;
  }
  
  .hero-subtitle {
    font-size: 1rem;
  }
  
  .card-body {
    padding: var(--spacing-sm);
  }
  
  .section {
    padding: var(--spacing-xl) 0;
  }
  
  /* Stack buttons vertically on mobile */
  .d-flex {
    flex-direction: column;
  }
  
  .d-flex.gap-1,
  .d-flex.gap-2,
  .d-flex.gap-3,
  .d-flex.gap-4 {
    gap: var(--spacing-sm);
  }
  
  /* Cookie banner mobile */
  .cookie-banner {
    padding: 1rem !important;
  }
  
  .cookie-banner .container {
    flex-direction: column;
    align-items: stretch !important;
  }
  
  .cookie-banner p {
    margin-bottom: 1rem !important;
    min-width: auto !important;
  }
  
  .cookie-banner button {
    width: 100%;
  }
  
  /* Hero section mobile improvements */
  .hero .row {
    flex-direction: column-reverse;
  }
  
  .hero .col-lg-6:first-child {
    margin-top: 1.5rem;
  }
  
  /* Card improvements for mobile */
  .card-body {
    padding: 1rem !important;
  }
  
  /* Section padding mobile */
  .section {
    padding: 2rem 0 !important;
  }
  
  .section-alt {
    padding: 2rem 0 !important;
  }
  
  /* Footer mobile */
  footer {
    padding: 2rem 0 1rem !important;
  }
  
  .footer-section {
    margin-bottom: 1.5rem;
  }
  
  /* Image responsive improvements */
  img {
    max-width: 100%;
    height: auto;
    display: block;
  }
  
  /* Text improvements mobile */
  p {
    font-size: 0.9375rem;
    line-height: 1.6;
  }
  
  /* Better spacing for mobile */
  .row {
    margin-bottom: 1rem;
  }
  
  .col {
    margin-bottom: 1.5rem;
  }
}

/* ===== Animations ===== */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.6s ease-out;
}

/* ===== Loading States ===== */
.loading {
  opacity: 0.6;
  pointer-events: none;
}

/* ===== 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;
}

/* ===== Print Styles ===== */
@media print {
  header, footer, .btn {
    display: none;
  }
  
  body {
    background: white;
    color: black;
  }
}