/* ==========================================================================
   Site Header
   ========================================================================== */

.site-header {
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4rem;
}

.site-header__logo {
  text-decoration: none;
  color: var(--color-primary);
}

.site-header__logo-img {
  display: block;
  height: 32px;
  width: auto;
}

/* ==========================================================================
   Navigation
   ========================================================================== */

.primary-nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.primary-nav__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-sm) 0;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text);
  text-decoration: none;
  transition: color var(--transition-fast);
  border: none;
  background: none;
  cursor: pointer;
}

.primary-nav__link:hover,
.primary-nav__link[aria-current="page"] {
  color: var(--color-accent);
}

.primary-nav__chevron {
  transition: transform var(--transition-fast);
}

.primary-nav__dropdown-toggle[aria-expanded="true"] .primary-nav__chevron {
  transform: rotate(180deg);
}

/* Dropdown */
.has-dropdown {
  position: relative;
}

.primary-nav__dropdown {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 220px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  padding: var(--space-sm) 0;
  z-index: 10;
}

.primary-nav__dropdown-toggle[aria-expanded="true"] + .primary-nav__dropdown {
  display: block;
}

.primary-nav__dropdown-link {
  display: block;
  padding: var(--space-sm) var(--space-md);
  font-size: var(--font-size-sm);
  color: var(--color-text);
  text-decoration: none;
  transition: background-color var(--transition-fast);
}

.primary-nav__dropdown-link:hover,
.primary-nav__dropdown-link[aria-current="page"] {
  background-color: var(--color-bg-alt);
  color: var(--color-accent);
}

/* Hamburger toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-sm);
  background: none;
  border: none;
  cursor: pointer;
}

.nav-toggle__bar {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-primary);
  transition: transform var(--transition-base), opacity var(--transition-base);
}

/* Skip link */
.skip-link:focus {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  text-align: center;
  z-index: 9999;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
  background-color: var(--color-primary);
  color: var(--color-white);
  padding-block: var(--space-4xl) var(--space-3xl);
  position: relative;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-cta));
}

.site-footer__inner {
  display: grid;
  gap: var(--space-xl);
}

.site-footer__logo-img {
  display: block;
  height: 28px;
  width: auto;
  margin-bottom: var(--space-md);
}

.site-footer__address,
.site-footer__contact {
  font-size: var(--font-size-sm);
  opacity: 0.85;
  margin-bottom: var(--space-xs);
}

.site-footer__contact a {
  color: var(--color-white);
  text-decoration: underline;
  text-decoration-color: rgba(255, 255, 255, 0.4);
}

.site-footer__contact a:hover {
  text-decoration-color: var(--color-white);
}

.site-footer__separator {
  margin-inline: var(--space-sm);
  opacity: 0.5;
}

.site-footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.site-footer__links a {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.site-footer__links a:hover {
  color: var(--color-white);
}

.site-footer__social a {
  color: rgba(255, 255, 255, 0.85);
  transition: color var(--transition-fast);
}

.site-footer__social a:hover {
  color: var(--color-white);
}

.site-footer__copyright {
  font-size: var(--font-size-sm);
  opacity: 0.6;
}

/* ==========================================================================
   Breadcrumbs
   ========================================================================== */

.breadcrumbs {
  padding: var(--space-md) 0;
}

.breadcrumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--font-size-sm);
}

.breadcrumbs__link {
  color: var(--color-accent);
  text-decoration: none;
}

.breadcrumbs__link:hover {
  text-decoration: underline;
}

.breadcrumbs__separator {
  color: var(--color-text-light);
  margin-inline: var(--space-xs);
}

.breadcrumbs__current {
  color: var(--color-text-light);
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-sm) var(--space-xl);
  font-size: var(--font-size-base);
  font-weight: 600;
  text-decoration: none;
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background-color var(--transition-fast), color var(--transition-fast),
    border-color var(--transition-fast), transform var(--transition-fast),
    box-shadow var(--transition-fast);
}

.btn:hover {
  transform: translateY(-1px);
}

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

.btn--primary:hover {
  background-color: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  color: var(--color-white);
  box-shadow: 0 4px 12px rgba(0, 112, 224, 0.3);
}

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

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

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

.btn--cta:hover {
  background-color: var(--color-cta-hover);
  border-color: var(--color-cta-hover);
  color: var(--color-white);
  box-shadow: 0 4px 12px rgba(232, 93, 38, 0.35);
}

/* ==========================================================================
   CTA Banner
   ========================================================================== */

.cta-banner {
  background: var(--gradient-cta);
  color: var(--color-white);
  padding: var(--space-4xl) var(--space-xl);
  text-align: center;
  border-radius: var(--radius-lg);
  margin-block: var(--space-3xl);
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -25%;
  width: 150%;
  height: 200%;
  background: radial-gradient(circle at 30% 50%, rgba(0, 112, 224, 0.15), transparent 60%);
  pointer-events: none;
}

.cta-banner__title {
  color: var(--color-white);
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-md);
  position: relative;
}

.cta-banner__text {
  opacity: 0.9;
  margin-bottom: var(--space-xl);
  max-width: 600px;
  margin-inline: auto;
  font-size: var(--font-size-lg);
  position: relative;
}

/* ==========================================================================
   Cards (shared)
   ========================================================================== */

.card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

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

.card__title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-sm);
}

.card__text {
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-md);
  line-height: var(--line-height-base);
}

.card__link {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.card__link:hover {
  text-decoration: underline;
}

/* Service card icon */
.service-card__icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-accent-light);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-md);
}

.service-card__icon-svg {
  width: 28px;
  height: 28px;
}

.service-card__icon-emoji {
  font-size: var(--font-size-2xl);
  line-height: 1;
}

/* Grid layouts */
.grid {
  display: grid;
  gap: var(--space-xl);
}

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

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

/* ==========================================================================
   Tags
   ========================================================================== */

.tag {
  display: inline-block;
  padding: var(--space-xs) var(--space-sm);
  font-size: 0.75rem;
  font-weight: 600;
  background-color: var(--color-accent-light);
  color: var(--color-accent);
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ==========================================================================
   Article
   ========================================================================== */

.article__header {
  margin-bottom: var(--space-xl);
}

.article__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-sm);
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
}

.article__category {
  display: inline-block;
  padding: var(--space-xs) var(--space-sm);
  font-size: 0.75rem;
  font-weight: 600;
  background-color: var(--color-accent-light);
  color: var(--color-accent);
  border-radius: var(--radius-sm);
}

.article__author {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
}

.article__featured-image {
  margin-bottom: var(--space-xl);
}

.article__featured-image img {
  width: 100%;
  border-radius: var(--radius-md);
}

.article__featured-image figcaption {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  margin-top: var(--space-sm);
}

.article__body {
  max-width: var(--container-narrow);
}

.article__body h2 {
  margin-top: var(--space-2xl);
}

.article__body h3 {
  margin-top: var(--space-xl);
}

.article__body ul,
.article__body ol {
  margin-bottom: var(--space-md);
  padding-left: var(--space-xl);
}

.article__body ul {
  list-style: disc;
}

.article__body ol {
  list-style: decimal;
}

.article__body li {
  margin-bottom: var(--space-sm);
}

.article__body blockquote {
  border-left: 4px solid var(--color-accent);
  padding-left: var(--space-lg);
  margin-block: var(--space-lg);
  font-style: italic;
  color: var(--color-text-light);
}

.article__body pre {
  background-color: var(--color-bg-alt);
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin-bottom: var(--space-md);
}

.article__body code {
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
}

.article__body img {
  border-radius: var(--radius-md);
  margin-block: var(--space-lg);
}

.article__footer {
  margin-top: var(--space-3xl);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
}

.article__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
}

.article__share {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
  font-size: var(--font-size-sm);
}

.article__share-label {
  font-weight: 600;
}

.article__share a,
.article__share button {
  color: var(--color-accent);
  text-decoration: none;
  background: none;
  border: none;
  cursor: pointer;
  font-size: var(--font-size-sm);
}

.article__share a:hover,
.article__share button:hover {
  text-decoration: underline;
}

/* ==========================================================================
   Service page
   ========================================================================== */

.service-page__intro {
  font-size: var(--font-size-lg);
  color: var(--color-text-light);
  margin-bottom: var(--space-2xl);
  max-width: var(--container-narrow);
}

.service-page__body h2 {
  margin-top: var(--space-2xl);
}

.service-page__body h3 {
  margin-top: var(--space-xl);
}

.service-page__body ul,
.service-page__body ol {
  margin-bottom: var(--space-md);
  padding-left: var(--space-xl);
}

.service-page__body ul {
  list-style: disc;
}

.service-page__body ol {
  list-style: decimal;
}

.service-page__body li {
  margin-bottom: var(--space-sm);
}

.service-page__tech {
  margin-top: var(--space-2xl);
}

.tech-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.tech-list__item {
  padding: var(--space-sm) var(--space-md);
  background-color: var(--color-bg-alt);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  font-weight: 500;
}

/* ==========================================================================
   Content Filter
   ========================================================================== */

.content-filter {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-2xl);
}

.content-filter__btn {
  padding: var(--space-sm) var(--space-md);
  font-size: var(--font-size-sm);
  font-weight: 500;
  background: var(--color-bg-alt);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

.content-filter__btn:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.content-filter__btn.is-active {
  background-color: var(--color-accent);
  color: var(--color-white);
  border-color: var(--color-accent);
}

.content-hub-empty {
  text-align: center;
  color: var(--color-text-light);
  padding: var(--space-3xl) 0;
}

/* ==========================================================================
   Hero
   ========================================================================== */

.hero {
  position: relative;
  color: var(--color-white);
  min-height: 70vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--gradient-overlay);
}

.hero__bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero__inner {
  position: relative;
  z-index: 1;
  padding-block: var(--space-4xl);
}

.hero__content {
  max-width: var(--container-narrow);
}

.hero__title {
  color: var(--color-white);
  font-size: var(--font-size-5xl);
  margin-bottom: var(--space-md);
  letter-spacing: -0.02em;
  line-height: var(--line-height-tight);
}

.hero__subtitle {
  font-size: var(--font-size-xl);
  opacity: 0.9;
  margin-bottom: var(--space-2xl);
  line-height: var(--line-height-base);
  max-width: 600px;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.hero .btn--secondary {
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(4px);
}

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

/* ==========================================================================
   Trust Bar
   ========================================================================== */

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

.trust-bar__title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-xl);
}

.trust-bar__logos {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: var(--space-xl);
}

.trust-bar__logo {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-light);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: var(--space-sm) var(--space-lg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.trust-bar__logo:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-sm);
}

/* ==========================================================================
   Section helpers
   ========================================================================== */

.section__title {
  text-align: center;
  margin-bottom: var(--space-sm);
}

.section__intro {
  text-align: center;
  color: var(--color-text-light);
  max-width: var(--container-narrow);
  margin-inline: auto;
  margin-bottom: var(--space-2xl);
}

.section__cta {
  text-align: center;
  margin-top: var(--space-xl);
}

.lead {
  font-size: var(--font-size-lg);
  color: var(--color-text-light);
  line-height: var(--line-height-base);
  margin-bottom: var(--space-xl);
}

/* ==========================================================================
   Timeline
   ========================================================================== */

.timeline__items {
  display: grid;
  gap: var(--space-xl);
  margin-top: var(--space-xl);
}

.timeline__item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-lg);
  align-items: start;
}

.timeline__year {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-accent);
  min-width: 4rem;
}

.timeline__text {
  margin: 0;
}

/* ==========================================================================
   Team Cards
   ========================================================================== */

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

.team-card__photo {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto var(--space-lg);
  border: 4px solid var(--color-accent-light);
}

.team-card__photo-placeholder {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-accent-light), #d0e4fa);
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-4xl);
  font-weight: 700;
  margin: 0 auto var(--space-lg);
}

.team-card__name {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-xs);
}

.team-card__role {
  font-size: var(--font-size-sm);
  color: var(--color-accent);
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.team-card__bio {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
}

/* ==========================================================================
   Contact Page
   ========================================================================== */

.contact-page {
  display: grid;
  gap: var(--space-3xl);
}

.contact-form__field {
  margin-bottom: var(--space-lg);
}

.contact-form__label {
  display: block;
  font-weight: 600;
  margin-bottom: var(--space-xs);
  font-size: var(--font-size-sm);
}

.required {
  color: #cc0000;
}

.contact-form__input {
  width: 100%;
  padding: var(--space-md) var(--space-lg);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  font-family: inherit;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.contact-form__input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 4px var(--color-accent-light);
}

.contact-form__textarea {
  resize: vertical;
  min-height: 150px;
}

.contact-form__submit {
  margin-top: var(--space-md);
}

.contact-details {
  font-style: normal;
}

.contact-details p {
  margin-bottom: var(--space-sm);
}

.contact-details a {
  color: var(--color-accent);
}

/* Article card image */
.article-card__image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  margin: calc(-1 * var(--space-xl));
  margin-bottom: var(--space-md);
  width: calc(100% + 2 * var(--space-xl));
}

.article-card__body {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.article-card__date {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
}

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

/* About teaser */
.about-teaser {
  display: grid;
  gap: var(--space-2xl);
  align-items: center;
}

.about-teaser__image {
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.about-teaser__image img {
  width: 100%;
  height: auto;
  display: block;
}

/* Mobile: < 640px */
@media (max-width: 639px) {
  .nav-toggle {
    display: flex;
  }

  .primary-nav {
    display: none;
    position: fixed;
    top: 4rem;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-white);
    z-index: 99;
    overflow-y: auto;
    padding: var(--space-xl);
  }

  .primary-nav.is-open {
    display: block;
  }

  .primary-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .primary-nav__link {
    padding: var(--space-md) 0;
    font-size: var(--font-size-lg);
    border-bottom: 1px solid var(--color-border);
    width: 100%;
    justify-content: space-between;
  }

  .primary-nav__dropdown {
    position: static;
    border: none;
    box-shadow: none;
    padding-left: var(--space-lg);
  }

  .primary-nav__dropdown-link {
    padding: var(--space-sm) 0;
  }

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

  h1 {
    font-size: var(--font-size-3xl);
  }

  .hero {
    min-height: 60vh;
  }

  .hero__title {
    font-size: var(--font-size-3xl);
  }

  .hero__subtitle {
    font-size: var(--font-size-base);
  }

  .site-footer__links {
    flex-direction: column;
    gap: var(--space-sm);
  }

  .cta-banner {
    padding: var(--space-2xl) var(--space-lg);
  }

  .cta-banner__title {
    font-size: var(--font-size-2xl);
  }
}

/* Medium: 640px-1023px */
@media (min-width: 640px) and (max-width: 1023px) {
  .grid--3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero__title {
    font-size: var(--font-size-4xl);
  }

  .about-teaser {
    grid-template-columns: 1fr 1fr;
  }
}

/* Large: 1024px+ */
@media (min-width: 1024px) {
  .site-footer__inner {
    grid-template-columns: 1fr 1fr auto;
    align-items: start;
  }

  .site-footer__copyright {
    grid-column: 1 / -1;
  }

  .contact-page {
    grid-template-columns: 2fr 1fr;
  }

  .hero__title {
    font-size: var(--font-size-6xl);
  }

  .about-teaser {
    grid-template-columns: 1fr 1fr;
  }
}

/* ==========================================================================
   404 Error Page
   ========================================================================== */

.error-page {
  text-align: center;
  padding-block: var(--space-4xl);
}

.error-page__code {
  font-size: 6rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: var(--space-md);
}

.error-page__message {
  font-size: var(--font-size-lg);
  color: var(--color-text-light);
  margin-bottom: var(--space-xl);
  max-width: 40ch;
  margin-inline: auto;
}

.error-page__actions {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
}