/* ==========================================================================
   Design System for insulinwellnesscore.info - Núcleo Insulínico (Portugal)
   ========================================================================== */

:root {
  --color-primary: #4C1D95;
  --color-primary-light: #5B21B6;
  --color-accent: #7C3AED;
  --color-accent-hover: #6D28D9;
  --color-bg: #F5F3FF;
  --color-bg-alt: #EDE9FE;
  --color-bg-card: #FFFFFF;
  --color-bg-highlight: #DDD6FE;
  --color-text-main: #4C1D95;
  --color-text-muted: #5B21B6;
  --color-border: #DDD6FE;
  --color-btn-text: #FFFFFF;
  
  --font-heading: 'Playfair Display', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 12px 28px rgba(0, 0, 0, 0.12);
  
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --max-width: 1160px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-bg);
  color: var(--color-text-main);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--color-accent-hover);
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Typography */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  color: var(--color-primary);
  line-height: 1.25;
}

h1 { font-size: 2.55rem; margin-bottom: 1.2rem; }
h2 { font-size: 2.1rem; margin-bottom: 1rem; }
h3 { font-size: 1.4rem; margin-bottom: 0.8rem; }
p { margin-bottom: 1.2rem; }

/* Buttons */
.btn {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 1rem;
  padding: 0.85rem 1.8rem;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  text-align: center;
  transition: all 0.2s ease;
}

.btn-primary {
  background-color: var(--color-accent);
  color: var(--color-btn-text) !important;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
}

.btn-primary:hover {
  background-color: var(--color-accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 14px rgba(0, 0, 0, 0.2);
}

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

.btn-secondary:hover {
  background-color: var(--color-primary);
  color: #FFFFFF !important;
}

/* Header Navigation (Full-Width & Prominent) */
.site-header {
  background-color: var(--color-bg-card);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-sm);
  width: 100%;
}

.site-header .navbar {
  max-width: 1440px;
  width: 100%;
  margin: 0 auto;
  padding: 0 2.5rem;
  min-height: 84px;
  height: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  font-family: var(--font-heading);
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--color-primary);
  white-space: nowrap !important;
  flex-shrink: 0 !important;
  text-decoration: none;
  letter-spacing: -0.2px;
}

.brand-logo img,
.brand-logo svg {
  flex-shrink: 0;
  width: 42px;
  height: 42px;
}

.nav-links {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 1.35rem;
  margin: 0;
  padding: 0;
  flex-shrink: 0;
}

.nav-links li {
  display: flex;
  align-items: center;
}

.nav-links a {
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--color-text-main);
  padding: 0.5rem 0.65rem;
  white-space: nowrap !important;
  transition: color 0.2s ease;
}

.nav-links a.active,
.nav-links a:hover {
  color: var(--color-accent);
}

.nav-cta {
  background-color: var(--color-accent) !important;
  color: var(--color-btn-text) !important;
  padding: 0.75rem 1.6rem !important;
  border-radius: var(--radius-sm);
  font-size: 1.02rem !important;
  font-weight: 700 !important;
  white-space: nowrap !important;
  flex-shrink: 0 !important;
  display: inline-block;
  box-shadow: 0 3px 8px rgba(0, 0, 0, 0.12);
  transition: all 0.2s ease;
}

.nav-cta:hover {
  background-color: var(--color-accent-hover) !important;
  transform: translateY(-2px);
  box-shadow: 0 6px 14px rgba(0, 0, 0, 0.18);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  width: 44px;
  height: 44px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 6px;
}

.nav-toggle span {
  display: block;
  width: 26px;
  height: 2.5px;
  background-color: var(--color-primary);
  border-radius: 2px;
  transition: all 0.3s ease;
}

/* Hero Section */
.hero {
  padding: 4.5rem 0 3.5rem;
  background-color: var(--color-bg);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 3.5rem;
  align-items: center;
}

.hero-content .badge-tag {
  display: inline-block;
  background-color: var(--color-bg-alt);
  color: var(--color-primary);
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 0.35rem 0.8rem;
  border-radius: 50px;
  margin-bottom: 1.2rem;
  border: 1px solid var(--color-border);
}

.hero-content .lead {
  font-size: 1.18rem;
  color: var(--color-text-muted);
  margin-bottom: 1.8rem;
}

.hero-bullets {
  list-style: none;
  margin-bottom: 2.2rem;
}

.hero-bullets li {
  position: relative;
  padding-left: 1.8rem;
  margin-bottom: 0.75rem;
  font-size: 1rem;
}

.hero-bullets li svg {
  position: absolute;
  left: 0;
  top: 3px;
  width: 18px;
  height: 18px;
  fill: var(--color-accent);
}

.hero-image-wrapper {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-image {
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  max-width: 420px;
  width: 100%;
}

/* Section Base */
.section {
  padding: 4.5rem 0;
}

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

.text-center {
  text-align: center;
}

.max-w-700 {
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 3rem;
}

/* 4 Pillars Grid */
.pillars-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.8rem;
}

.pillar-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

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

.pillar-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background-color: var(--color-bg-highlight);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.2rem;
}

.pillar-icon svg {
  width: 26px;
  height: 26px;
}

.pillar-card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.6rem;
}

.pillar-card p {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  margin-bottom: 1.2rem;
}

.pillar-link {
  font-weight: 700;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

/* Certificates Section */
.certs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1.5rem;
}

.cert-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.6rem;
  text-align: center;
  box-shadow: var(--shadow-sm);
}

.cert-icon-wrapper {
  width: 52px;
  height: 52px;
  margin: 0 auto 1rem;
  border-radius: 50%;
  background-color: var(--color-bg-highlight);
  display: flex;
  align-items: center;
  justify-content: center;
}

.cert-code {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--color-accent);
  background-color: var(--color-bg-alt);
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  margin-bottom: 0.6rem;
}

.cert-card h4 {
  font-size: 1.05rem;
  margin-bottom: 0.4rem;
}

.cert-card p {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  margin-bottom: 0;
}

/* Product Presentation Block (No Price) */
.order-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 3rem;
  box-shadow: var(--shadow-md);
}

.order-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 3rem;
  align-items: center;
}

/* Form Styles */
.form-group {
  margin-bottom: 1.2rem;
}

.form-label {
  display: block;
  font-weight: 600;
  font-size: 0.92rem;
  margin-bottom: 0.4rem;
}

.form-input {
  width: 100%;
  padding: 0.85rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background-color: var(--color-bg);
  color: var(--color-text-main);
  font-family: var(--font-body);
  font-size: 1rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

/* FAQ Accordion */
.faq-item {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  margin-bottom: 0.85rem;
  overflow: hidden;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.faq-item:hover {
  border-color: var(--color-accent);
}

.faq-question {
  padding: 1.2rem 1.5rem;
  font-weight: 700;
  font-size: 1.02rem;
  color: var(--color-primary);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  user-select: none;
}

.faq-toggle-icon {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
  transition: transform 0.2s ease;
  flex-shrink: 0;
}

.faq-answer {
  padding: 0 1.5rem 1.3rem;
  color: var(--color-text-muted);
  font-size: 0.96rem;
  line-height: 1.65;
  display: none;
  border-top: 1px dashed var(--color-border);
  margin-top: 0.4rem;
  padding-top: 0.9rem;
}

.faq-item.open .faq-answer {
  display: block;
}

/* Footer */
.site-footer {
  background-color: var(--color-bg-card);
  border-top: 1px solid var(--color-border);
  padding: 3.5rem 0 2rem;
  font-size: 0.9rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}

.footer-col h4 {
  font-size: 1.05rem;
  margin-bottom: 1rem;
}

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

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: 1.5rem;
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.82rem;
}

/* Articles Body Layout */
.article-header {
  padding: 3rem 0 2rem;
  background-color: var(--color-bg-alt);
  border-bottom: 1px solid var(--color-border);
}

.breadcrumbs {
  font-size: 0.85rem;
  margin-bottom: 1rem;
  color: var(--color-text-muted);
}

.article-body {
  padding: 3.5rem 0;
  max-width: 820px;
  margin: 0 auto;
}

/* Cookie Banner */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: var(--color-bg-card);
  border-top: 2px solid var(--color-accent);
  padding: 1.2rem;
  box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.12);
  z-index: 9999;
  display: none;
}

.cookie-content {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}

/* Responsive Breakpoints */
@media (max-width: 1280px) {
  .site-header .navbar {
    padding: 0 1.5rem;
    gap: 1rem;
    max-width: 100%;
  }
  .brand-logo {
    font-size: 1.3rem;
    gap: 0.7rem;
  }
  .brand-logo img,
  .brand-logo svg {
    width: 38px;
    height: 38px;
  }
  .nav-links {
    gap: 0.95rem;
  }
  .nav-links a {
    font-size: 0.96rem;
    padding: 0.4rem 0.45rem;
  }
  .nav-cta {
    padding: 0.65rem 1.25rem !important;
    font-size: 0.96rem !important;
  }
}

@media (max-width: 1080px) {
  .hero-grid, .order-grid, .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .site-header .navbar {
    padding: 0 1.5rem;
    min-height: 74px;
  }

  .brand-logo {
    font-size: 1.25rem;
  }

  .brand-logo img,
  .brand-logo svg {
    width: 36px;
    height: 36px;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-bg-card);
    border-bottom: 2px solid var(--color-border);
    flex-direction: column;
    align-items: stretch;
    padding: 1.5rem 2rem;
    box-shadow: var(--shadow-lg);
    gap: 0.5rem;
    z-index: 1000;
  }
  
  .nav-links li {
    width: 100%;
  }

  .nav-links a {
    font-size: 1.1rem;
    padding: 0.85rem 0;
    display: block;
    width: 100%;
    border-bottom: 1px solid var(--color-border);
  }

  .nav-cta {
    width: 100%;
    text-align: center;
    margin-top: 0.8rem;
    padding: 0.85rem !important;
    font-size: 1.05rem !important;
    display: block;
  }
  
  .nav-links.active {
    display: flex;
  }
  
  .nav-toggle {
    display: flex;
  }
}