/* FerWorks – color palette */
:root {
  --color-dark: #1f2933;
  --color-mid: #4b6475;
  --color-light: #cbd2da;
  --color-bg: #f9fafb;
  --max-width: 960px;
  --spacing: 1.5rem;
  --spacing-lg: 3rem;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-dark);
  background: var(--color-bg);
  text-align: center;
}

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

a {
  color: var(--color-mid);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* Header */
.site-header {
  background: var(--color-bg);
  color: var(--color-dark);
  padding: 0.35rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header a {
  color: var(--color-dark);
}

.site-header a:hover {
  color: var(--color-mid);
  text-decoration: none;
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing);
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing);
  text-align: left;
}

.nav-wrap {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  flex: 1;
  min-width: 0;
  justify-content: flex-start;
}

.nav-main {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.nav-main a {
  font-size: 0.95rem;
}

.lang-switch {
  display: flex;
  gap: 0.5rem;
  margin-left: auto;
}

.lang-switch a {
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-size: 0.9rem;
}

.lang-switch a[href]:not([href*="index"]) {
  opacity: 0.85;
}

.lang-switch a:hover {
  background: rgba(31, 41, 51, 0.08);
}

/* Mobile menu toggle */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-dark);
  padding: 0.5rem;
  cursor: pointer;
  font-size: 1.25rem;
}

@media (max-width: 700px) {
  .menu-toggle {
    display: block;
  }

  .nav-wrap {
    width: 100%;
    flex-direction: column;
    align-items: flex-start;
  }

  .lang-switch {
    margin-left: 0;
  }

  .nav-wrap.is-open .nav-main {
    display: flex;
  }

  .nav-main {
    display: none;
    flex-direction: column;
  }
}

/* Sections */
section {
  padding: var(--spacing-lg) 0;
}

.section-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing);
}

.section-title {
  font-size: 1.75rem;
  margin-top: 0;
  margin-bottom: var(--spacing);
  color: var(--color-dark);
}

/* Hero */
.hero {
  background: var(--color-dark);
  color: var(--color-bg);
  padding: 4rem 0;
  text-align: center;
}

.hero-title {
  font-size: clamp(1.35rem, 3.8vw, 2.25rem);
  font-weight: 700;
  line-height: 1.25;
  color: var(--color-bg);
  margin: 0 auto 1.25rem;
  max-width: 22em;
}

.hero .intro {
  max-width: 42em;
  margin: 0 auto 1.5rem;
  line-height: 1.7;
  color: var(--color-light);
}

/* Dark block */
.block-dark {
  background: var(--color-mid);
  color: var(--color-bg);
  padding: var(--spacing-lg) 0;
}

.block-dark .section-title {
  color: var(--color-bg);
}

.block-dark a {
  color: var(--color-light);
}

.block-dark .section-inner > h3 {
  color: var(--color-bg);
}

.block-dark .partners-text {
  color: var(--color-bg);
}

/* Cards / problem areas */
.problem-grid,
.domain-grid,
.why-grid,
.people-grid,
.projects-grid {
  display: grid;
  gap: var(--spacing);
  margin-top: var(--spacing);
}

@media (min-width: 600px) {
  .problem-grid,
  .domain-grid,
  .why-grid {
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  }

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

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

@media (min-width: 800px) {
  .projects-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.card {
  background: #fff;
  border: 1px solid var(--color-light);
  border-radius: 8px;
  padding: var(--spacing);
  color: var(--color-dark);
}

.card h3 {
  margin-top: 0;
  font-size: 1.15rem;
  color: var(--color-dark);
}

.card p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--color-dark);
}

.card ul {
  margin: 0.5rem 0 0;
  padding-left: 0;
  list-style-position: inside;
}

.card li {
  margin-bottom: 0.25rem;
  color: var(--color-dark);
}

.card a {
  color: var(--color-mid);
}

/* Partners & refs */
.partners-text {
  margin: 0 0 var(--spacing-lg);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-dark);
}

.refs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing);
  align-items: stretch;
}

@media (max-width: 900px) {
  .refs {
    grid-template-columns: 1fr;
  }
}

blockquote.card.ref-block {
  margin: 0;
}

.ref-block cite {
  display: block;
  margin-top: 0.5rem;
  font-style: normal;
  font-size: 0.9rem;
  color: var(--color-mid);
}

/* Contact / CTA */
.contact-section {
  background: var(--color-dark);
  color: var(--color-bg);
  padding: var(--spacing-lg) 0;
}

.contact-section .section-title {
  color: var(--color-bg);
}

.contact-section a {
  color: var(--color-light);
}

.contact-section .section-inner {
  text-align: center;
}

.contact-wrap {
  display: grid;
  gap: 2rem;
  max-width: 32em;
  margin-left: auto;
  margin-right: auto;
}

.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: 6px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: opacity 0.2s;
}

.btn:hover {
  opacity: 0.9;
  text-decoration: none;
}

.btn-primary {
  background: var(--color-mid);
  color: var(--color-bg);
}

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

/* Form */
.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.35rem;
  font-size: 0.95rem;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.6rem 0.75rem;
  font: inherit;
  border: 1px solid var(--color-light);
  border-radius: 6px;
  background: #fff;
  color: var(--color-dark);
}

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

.contact-form .btn {
  margin-top: 0.5rem;
  margin-left: auto;
  margin-right: auto;
  display: block;
}

/* Footer */
.site-footer {
  padding: var(--spacing) 0;
  border-top: 1px solid var(--color-light);
  font-size: 0.9rem;
  color: var(--color-mid);
  text-align: center;
}

/* Project thumb */
.project-thumb {
  aspect-ratio: 4/3;
  background: var(--color-light);
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 0.75rem;
}

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

.project-thumb span {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--color-mid);
  font-size: 0.9rem;
}

/* Person card */
.person-photo {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--color-light);
  margin-bottom: 0.75rem;
  overflow: hidden;
}

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

.person-photo span {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--color-mid);
  font-size: 1.5rem;
}