/* ========================================
   Kunskapsbank — Stylesheet
   Josefine H Skincare
   ======================================== */

/* --- KB Navbar (solid background, no transparent hero state) --- */
.kb-navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(250, 248, 245, 0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 20px rgba(0, 0, 0, 0.04);
  height: var(--nav-height);
  transition: all 0.4s ease;
}

.kb-navbar.scrolled {
  box-shadow: 0 1px 20px rgba(0, 0, 0, 0.08);
  height: 70px;
}

.kb-navbar .nav-logo-img {
  height: 40px;
  width: auto;
}

.kb-navbar .nav-link {
  color: var(--color-text-light);
  font-size: 0.8rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 8px 16px;
  transition: all 0.3s ease;
}

.kb-navbar .nav-link:hover {
  color: var(--color-accent-dark);
}

.kb-navbar .nav-link--active {
  color: var(--color-accent-dark);
  font-weight: 500;
}

.kb-navbar .nav-cta {
  border: 1px solid var(--color-accent);
  border-radius: 2px;
  padding: 8px 20px;
  margin-left: 8px;
  color: var(--color-accent-dark);
}

.kb-navbar .nav-cta:hover {
  background: var(--color-accent);
  color: var(--color-white);
}

.kb-navbar .nav-toggle span {
  background: var(--color-text);
}

/* --- Breadcrumb --- */
.kb-breadcrumb {
  padding-top: calc(var(--nav-height) + 20px);
  padding-bottom: 0;
  background: var(--color-bg);
}

.kb-breadcrumb .container {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.kb-breadcrumb a {
  color: var(--color-text-light);
  transition: color 0.3s ease;
}

.kb-breadcrumb a:hover {
  color: var(--color-accent-dark);
}

.kb-breadcrumb span {
  color: var(--color-text-light);
}

.kb-breadcrumb-sep {
  color: var(--color-accent-light);
  font-weight: 300;
}

/* --- KB Hero (index page) --- */
.kb-hero {
  background: var(--color-bg);
  text-align: center;
  padding: 56px 0 72px;
}

.kb-hero-label {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 14px;
}

.kb-hero-title {
  font-family: var(--font-heading);
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  font-weight: 300;
  color: var(--color-text);
  line-height: 1.15;
  margin-bottom: 20px;
  letter-spacing: 0.02em;
}

.kb-hero-divider {
  width: 50px;
  height: 1px;
  background: var(--color-accent);
  margin: 0 auto 24px;
}

.kb-hero-description {
  font-size: 0.95rem;
  font-weight: 300;
  color: var(--color-text-light);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.8;
}

/* --- KB Section (article grid area) --- */
.kb-section {
  background: var(--color-white);
  padding: 80px 0 100px;
}

/* --- KB Grid (index page) --- */
.kb-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

/* --- KB Card (index page) --- */
.kb-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  padding: 44px 36px 40px;
  transition: all 0.4s ease;
  position: relative;
  display: flex;
  flex-direction: column;
}

.kb-card:hover {
  border-color: var(--color-accent-light);
  box-shadow: 0 12px 48px rgba(0, 0, 0, 0.07);
  transform: translateY(-6px);
}

.kb-card-icon {
  width: 48px;
  height: 48px;
  color: var(--color-accent);
  margin-bottom: 20px;
}

.kb-card-icon svg {
  width: 100%;
  height: 100%;
}

.kb-card-tag {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent-dark);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  padding: 4px 12px;
  margin-bottom: 16px;
  align-self: flex-start;
}

.kb-card-title {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--color-text);
  line-height: 1.3;
  margin-bottom: 14px;
}

.kb-card-excerpt {
  font-size: 0.88rem;
  font-weight: 300;
  color: var(--color-text-light);
  line-height: 1.75;
  margin-bottom: 24px;
  flex-grow: 1;
}

.kb-card-link {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent-dark);
  transition: letter-spacing 0.3s ease, color 0.3s ease;
}

.kb-card-link:hover {
  letter-spacing: 0.18em;
  color: var(--color-accent);
}

/* Stagger animation delays for cards */
.kb-card.fade-in:nth-child(1) { transition-delay: 0s; }
.kb-card.fade-in:nth-child(2) { transition-delay: 0.1s; }
.kb-card.fade-in:nth-child(3) { transition-delay: 0.2s; }
.kb-card.fade-in:nth-child(4) { transition-delay: 0.3s; }

/* --- CTA Section (index page) --- */
.kb-cta {
  background: var(--color-bg);
  padding: 80px 0;
  text-align: center;
}

.kb-cta-content {
  max-width: 560px;
  margin: 0 auto;
}

.kb-cta-label {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 12px;
}

.kb-cta-title {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 300;
  color: var(--color-text);
  line-height: 1.2;
  margin-bottom: 16px;
}

.kb-cta-divider {
  width: 40px;
  height: 1px;
  background: var(--color-accent);
  margin: 0 auto 20px;
}

.kb-cta-text {
  font-size: 0.92rem;
  font-weight: 300;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 32px;
}

/* ========================================
   Article Pages — Styles
   ======================================== */

/* --- Article hero --- */
.article-hero {
  background: var(--color-text);
  padding: 140px 0 60px;
  text-align: center;
}

.article-hero .section-label {
  color: var(--color-accent-light);
}

.article-hero .section-title {
  color: var(--color-white);
  max-width: 700px;
  margin: 0 auto 16px;
}

.article-hero .title-divider {
  background: var(--color-accent-light);
}

/* --- Breadcrumbs (article pages) --- */
.breadcrumbs {
  padding: 16px 0;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-white);
}

.breadcrumbs-list {
  list-style: none;
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

.breadcrumbs-list li {
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.05em;
  color: var(--color-text-light);
}

.breadcrumbs-list a {
  color: var(--color-accent-dark);
}

.breadcrumbs-list li + li::before {
  content: '/';
  margin-right: 8px;
  color: var(--color-border);
}

/* --- Article content --- */
.article-content {
  max-width: 740px;
  margin: 0 auto;
  padding: 60px 24px 80px;
}

.article-content h2 {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 400;
  color: var(--color-text);
  margin: 48px 0 16px;
  line-height: 1.3;
}

.article-content h3 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--color-text);
  margin: 32px 0 12px;
}

.article-content p {
  font-size: 0.94rem;
  font-weight: 300;
  color: var(--color-text-light);
  line-height: 1.85;
  margin-bottom: 18px;
}

.article-content ul,
.article-content ol {
  margin: 0 0 20px 20px;
  color: var(--color-text-light);
}

.article-content li {
  font-size: 0.92rem;
  font-weight: 300;
  line-height: 1.8;
  margin-bottom: 6px;
}

.article-content a {
  color: var(--color-accent-dark);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.article-content strong {
  font-weight: 500;
  color: var(--color-text);
}

.article-content blockquote {
  border-left: 3px solid var(--color-accent-light);
  margin: 28px 0;
  padding: 16px 24px;
  background: var(--color-bg);
}

.article-content blockquote p {
  font-style: italic;
  color: var(--color-text);
  margin-bottom: 0;
}

/* --- Article CTA --- */
.article-cta {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  padding: 40px;
  text-align: center;
  margin: 48px 0;
}

.article-cta h3 {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 400;
  color: var(--color-text);
  margin: 0 0 8px;
}

.article-cta p {
  font-size: 0.88rem;
  color: var(--color-text-light);
  margin-bottom: 20px;
}

.article-cta .btn {
  margin: 0;
}

/* --- Article nav (used on article pages) --- */
.article-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(250, 248, 245, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 20px rgba(0, 0, 0, 0.06);
  height: 70px;
}

.article-nav .nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.article-nav .nav-logo-img {
  height: 36px;
  width: auto;
}

.article-nav-links {
  display: flex;
  gap: 8px;
  align-items: center;
  list-style: none;
}

.article-nav-links a {
  font-size: 0.78rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-light);
  padding: 8px 14px;
  transition: color 0.3s ease;
}

.article-nav-links a:hover {
  color: var(--color-accent-dark);
}

.article-nav-links .nav-cta {
  border: 1px solid var(--color-accent);
  color: var(--color-accent-dark);
  padding: 8px 18px;
}

.article-nav-links .nav-cta:hover {
  background: var(--color-accent);
  color: var(--color-white);
}

/* --- Article footer --- */
.article-footer {
  background: var(--color-text);
  color: rgba(255, 255, 255, 0.6);
  padding: 40px 0 24px;
  text-align: center;
}

.article-footer p {
  font-size: 0.72rem;
  font-weight: 300;
  letter-spacing: 0.05em;
}

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

/* --- KB Card (used on article pages for related articles) --- */
.kb-card-label {
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 10px;
}

.kb-card h3 {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 400;
  color: var(--color-text);
  margin-bottom: 12px;
  line-height: 1.3;
}

.kb-card p {
  font-size: 0.86rem;
  font-weight: 300;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 16px;
}

/* ========================================
   Responsive
   ======================================== */

@media (max-width: 768px) {
  /* KB index page */
  .kb-hero {
    padding: 40px 0 56px;
  }

  .kb-section {
    padding: 56px 0 72px;
  }

  .kb-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .kb-card {
    padding: 32px 28px;
  }

  .kb-cta {
    padding: 56px 0;
  }

  /* Mobile nav for kb-navbar */
  .kb-navbar .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    flex-direction: column;
    background: var(--color-white);
    padding: 100px 40px 40px;
    gap: 4px;
    transition: right 0.4s ease;
    box-shadow: -4px 0 30px rgba(0, 0, 0, 0.1);
  }

  .kb-navbar .nav-menu.active {
    right: 0;
  }

  .kb-navbar .nav-link {
    padding: 12px 0;
    font-size: 0.82rem;
  }

  .kb-navbar .nav-cta {
    margin-left: 0;
    margin-top: 12px;
    text-align: center;
  }

  .kb-navbar .nav-toggle {
    display: flex;
  }

  /* Article pages */
  .article-hero {
    padding: 120px 0 40px;
  }

  .article-content {
    padding: 40px 20px 60px;
  }

  .article-cta {
    padding: 28px 20px;
  }

  .article-nav-links {
    gap: 4px;
  }

  .article-nav-links a {
    font-size: 0.72rem;
    padding: 6px 10px;
  }
}

@media (max-width: 480px) {
  .kb-hero-title {
    font-size: 2rem;
  }

  .kb-card-title {
    font-size: 1.3rem;
  }

  .kb-cta-title {
    font-size: 1.7rem;
  }

  .kb-card {
    padding: 28px 24px;
  }

  .article-hero .section-title {
    font-size: 1.8rem;
  }
}