/* ============================================================
   ArchitektenKombinatie — Static site
   Font: Work Sans (Google), Colors: dark near-black / accent orange
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Work+Sans:wght@300;400;500;600&display=swap');

:root {
  --color-text:      #181b20;
  --color-secondary: #656a70;
  --color-accent:    #e95827;
  --color-bg:        #ffffff;
  --color-border:    #e4e4e4;
  --color-light-bg:  #f5f5f5;
  --max-width:       1270px;
  --header-h:        76px;
  --gap:             30px;
  --font:            'Work Sans', sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  font-weight: 400;
  color: var(--color-text);
  background: var(--color-bg);
  font-size: 16px;
  line-height: 1.65;
}

a { color: inherit; text-decoration: none; }
a:hover { color: var(--color-accent); }
img { display: block; max-width: 100%; height: auto; }

/* ── LAYOUT ── */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--gap);
}

/* ── HEADER ── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  height: var(--header-h);
  display: flex;
  align-items: center;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.site-logo img {
  height: 44px;
  width: auto;
}

.site-nav ul {
  list-style: none;
  display: flex;
  gap: 36px;
}

.site-nav a {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-secondary);
  letter-spacing: 0.01em;
  padding-bottom: 3px;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--color-text);
  border-bottom-color: var(--color-text);
}

/* hamburger */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  transition: transform 0.2s, opacity 0.2s;
}
.menu-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.open span:nth-child(2) { opacity: 0; }
.menu-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── HERO ── */
.hero {
  position: relative;
  height: 70vh;
  min-height: 480px;
  overflow: hidden;
  display: flex;
  align-items: flex-end;
}

.hero-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(24,27,32,.65) 0%, rgba(24,27,32,.1) 60%, transparent 100%);
}

.hero-content {
  position: relative;
  padding: 48px var(--gap);
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  color: #fff;
}

.hero-content h1 {
  font-size: clamp(1.6rem, 4vw, 2.8rem);
  font-weight: 300;
  line-height: 1.2;
  max-width: 640px;
  margin-bottom: 12px;
}

.hero-content p {
  font-size: 1rem;
  opacity: 0.85;
  max-width: 480px;
}

/* ── SECTION HEADINGS ── */
.section-head {
  margin-bottom: 36px;
}

.section-head h2 {
  font-size: clamp(1.2rem, 3vw, 1.75rem);
  font-weight: 400;
  margin-bottom: 4px;
}

.section-head .sub {
  color: var(--color-secondary);
  font-size: 0.95rem;
}

/* ── PROJECT GRID ── */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--gap);
}

.project-card {
  display: block;
  cursor: pointer;
}

.project-card-img {
  position: relative;
  aspect-ratio: 4/3;
  overflow: hidden;
  background: var(--color-light-bg);
}

.project-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.project-card:hover .project-card-img img {
  transform: scale(1.04);
}

.project-card-body {
  padding: 16px 0 8px;
}

.project-card-body h2 {
  font-size: 1rem;
  font-weight: 500;
  margin-bottom: 4px;
}

.project-card-body .cats {
  font-size: 0.82rem;
  color: var(--color-secondary);
  letter-spacing: 0.03em;
}

/* ── FILTER BAR ── */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 36px;
}

.filter-btn {
  font-family: var(--font);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 6px 16px;
  border: 1px solid var(--color-border);
  background: none;
  color: var(--color-secondary);
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--color-text);
  color: #fff;
  border-color: var(--color-text);
}

/* ── PAGE CONTENT ── */
.page-section {
  padding: 72px 0;
}

.page-section + .page-section {
  border-top: 1px solid var(--color-border);
}

/* ── BUREAU ── */
.bureau-intro {
  max-width: 720px;
}

.bureau-intro h1 {
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 300;
  margin-bottom: 28px;
  line-height: 1.3;
}

.bureau-intro p {
  margin-bottom: 20px;
  color: var(--color-text);
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--gap);
  margin-top: 48px;
}

.team-card img {
  width: 100%;
  aspect-ratio: 3/4;
  object-fit: cover;
  background: var(--color-light-bg);
  margin-bottom: 12px;
}

.team-card .no-photo {
  width: 100%;
  aspect-ratio: 3/4;
  background: var(--color-light-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-border);
  font-size: 2rem;
  margin-bottom: 12px;
}

.team-card h3 {
  font-size: 0.95rem;
  font-weight: 500;
  margin-bottom: 2px;
}

.team-card .role {
  font-size: 0.82rem;
  color: var(--color-secondary);
}

/* ── PROJECT DETAIL ── */
.project-detail-header {
  padding: 48px 0 36px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 48px;
}

.project-detail-header h1 {
  font-size: clamp(1.5rem, 4vw, 2.4rem);
  font-weight: 300;
  margin-bottom: 10px;
}

.project-meta {
  display: flex;
  gap: 36px;
  flex-wrap: wrap;
  font-size: 0.85rem;
  color: var(--color-secondary);
}

.project-meta strong {
  color: var(--color-text);
  font-weight: 500;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  display: block;
  margin-bottom: 2px;
}

.project-body {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 60px;
  align-items: start;
}

.project-description p {
  margin-bottom: 1.2em;
}

.project-gallery {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  margin: 48px 0;
}

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

.project-gallery img:first-child {
  aspect-ratio: 16/9;
}

.project-gallery img:not(:first-child) {
  aspect-ratio: 4/3;
}

/* ── CONTACT ── */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.contact-info h2 {
  font-size: 1.1rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 20px;
}

.contact-details p {
  margin-bottom: 6px;
}

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

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-form label {
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  display: block;
  margin-bottom: 6px;
  color: var(--color-secondary);
}

.contact-form input,
.contact-form textarea {
  font-family: var(--font);
  font-size: 15px;
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-text);
  outline: none;
  transition: border-color 0.2s;
  -webkit-appearance: none;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: var(--color-text);
}

.contact-form textarea {
  min-height: 140px;
  resize: vertical;
}

/* ── BUTTON ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 14px 28px;
  background: var(--color-text);
  color: #fff;
  border: none;
  cursor: pointer;
  transition: background 0.2s;
}

.btn:hover { background: var(--color-accent); color: #fff; }

.btn-accent { background: var(--color-accent); }
.btn-accent:hover { background: #d04820; }

/* ── FOOTER ── */
.site-footer {
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
  padding: 64px 0;
  margin-top: auto;
}

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

.footer-logo img {
  height: 36px;
  margin-bottom: 20px;
}

.footer-col h4 {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.footer-col p,
.footer-col a {
  font-size: 0.9rem;
  color: var(--color-secondary);
  line-height: 1.8;
  display: block;
}

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

.footer-col ul {
  list-style: none;
}

.footer-col ul a {
  font-size: 0.9rem;
  color: var(--color-secondary);
}

.footer-col ul a:hover { color: var(--color-text); }

.footer-social {
  display: flex;
  gap: 16px;
  margin-top: 8px;
}

.footer-social a {
  color: var(--color-text);
  font-size: 1.1rem;
}

.footer-bottom {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
  font-size: 0.8rem;
  color: var(--color-secondary);
}

/* ── SEPARATOR ── */
.sep {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 0;
}

/* ── BACK LINK ── */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--color-secondary);
  margin-bottom: 32px;
}
.back-link:hover { color: var(--color-text); }

/* ── LOADING STATE ── */
.loading-state {
  text-align: center;
  padding: 80px;
  color: var(--color-secondary);
}

/* ── PAGE TITLE BAR ── */
.page-title-bar {
  padding: 40px 0 0;
  margin-bottom: 48px;
}

.page-title-bar h1 {
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 300;
}

/* ── VISIE BLOCK ── */
.visie-block {
  background: var(--color-light-bg);
  padding: 60px;
  max-width: 800px;
}

.visie-block blockquote {
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  font-weight: 300;
  line-height: 1.4;
  font-style: italic;
  color: var(--color-text);
}

/* ── RESPONSIVE ── */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .project-body { grid-template-columns: 1fr; }
  .contact-layout { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  :root { --gap: 20px; }

  .menu-toggle { display: flex; }

  .site-nav {
    display: none;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: 24px var(--gap);
  }

  .site-nav.open { display: block; }

  .site-nav ul {
    flex-direction: column;
    gap: 20px;
  }

  .site-nav a { font-size: 1rem; }

  .projects-grid { grid-template-columns: 1fr; }

  .footer-grid { grid-template-columns: 1fr; gap: 32px; }

  .hero { height: 55vh; }

  .page-section { padding: 48px 0; }

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

  .visie-block { padding: 36px; }
}

@media (max-width: 480px) {
  .team-grid { grid-template-columns: 1fr; }
}