/* ═══════════════════════════════════════════════════════════════
   FinnBIM — style.css
   ═══════════════════════════════════════════════════════════════ */

/* ── Design Tokens ───────────────────────────────────────────── */
:root {
  --c-950:    #020617;
  --c-900:    #0f172a;
  --c-700:    #334155;
  --c-600:    #475569;
  --c-400:    #94a3b8;
  --c-200:    #e2e8f0;
  --c-100:    #f1f5f9;
  --c-50:     #f8fafc;
  --c-white:  #ffffff;
  --c-accent: #c9a430;

  --font-head: 'Plus Jakarta Sans', system-ui, sans-serif;
  --font-body: 'IBM Plex Sans', system-ui, sans-serif;

  --space-xs:  0.5rem;
  --space-sm:  1rem;
  --space-md:  1.5rem;
  --space-lg:  2.5rem;
  --space-xl:  4rem;
  --space-2xl: 6rem;

  --max-w: 1160px;
  --radius: 4px;
  --shadow-sm:   0 1px 3px rgba(15,23,42,0.08), 0 1px 2px rgba(15,23,42,0.05);
  --shadow-md:   0 4px 16px rgba(15,23,42,0.10), 0 2px 4px rgba(15,23,42,0.06);
  --shadow-lg:   0 10px 32px rgba(15,23,42,0.13), 0 3px 8px rgba(15,23,42,0.07);
  --transition:  0.22s ease;
}

/* ── Reset ───────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--c-900);
  background: var(--c-white);
  -webkit-font-smoothing: antialiased;
}
img    { display: block; max-width: 100%; height: auto; }
a      { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font: inherit; }
input, textarea, select { font: inherit; }

/* ── Layout helpers ──────────────────────────────────────────── */
.section-inner {
  max-width: var(--max-w);
  margin-inline: auto;
  padding: var(--space-2xl) var(--space-md);
}

.section-header {
  max-width: 680px;
  margin-bottom: var(--space-xl);
}
.section-header h2 {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(1.5rem, 2.5vw, 2.125rem);
  letter-spacing: -0.02em;
  color: var(--c-900);
  margin-bottom: var(--space-sm);
}
.section-header p {
  color: var(--c-600);
  font-size: 1rem;
  line-height: 1.75;
}

/* ── Buttons ─────────────────────────────────────────────────── */
.btn {
  display: inline-block;
  padding: 0.75rem 1.875rem;
  border-radius: var(--radius);
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 0.9375rem;
  letter-spacing: 0.01em;
  transition: opacity var(--transition), transform var(--transition),
              box-shadow var(--transition);
  white-space: nowrap;
}
.btn:hover  { opacity: 0.88; transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn:active { transform: none; }
.btn-primary { background: var(--c-accent); color: var(--c-900); }

/* ── Scroll-reveal ───────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.reveal.visible { opacity: 1; transform: none; }

/* ─────────────────────────────────────────────────────────────
   NAVIGATION
────────────────────────────────────────────────────────────── */
#nav {
  position: fixed;
  inset-block-start: 0;
  inset-inline: 0;
  z-index: 200;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
#nav.scrolled {
  border-bottom-color: var(--c-200);
  box-shadow: var(--shadow-sm);
}

.nav-inner {
  max-width: var(--max-w);
  margin-inline: auto;
  padding: 0.75rem var(--space-md); /* mobile default — compact */
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  transition: padding 0.35s ease;
}

.nav-logo img {
  height: 34px;
  width: auto;
  transition: height 0.35s ease;
}

.nav-links {
  display: flex;
  gap: var(--space-lg);
  align-items: center;
}
.nav-links a {
  color: var(--c-700);
  font-size: 0.9375rem;
  font-weight: 500;
  transition: color var(--transition), font-size 0.35s ease;
}
.nav-links a:hover { color: var(--c-900); }

/* ── Desktop: large at top, shrinks on scroll ────────────────── */
@media (min-width: 768px) {
  .nav-inner                { padding: 2rem var(--space-md); }
  .nav-logo img             { height: 136px; }
  .nav-links a              { font-size: 1.125rem; }

  #nav.scrolled .nav-inner  { padding: 0.75rem var(--space-md); }
  #nav.scrolled .nav-logo img { height: 34px; }
  #nav.scrolled .nav-links a  { font-size: 0.9375rem; }
}

/* Hamburger */
.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: 4px;
}
.nav-hamburger span {
  display: block;
  height: 2px;
  background: var(--c-700);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
  transform-origin: center;
}
.nav-hamburger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-hamburger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-hamburger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile dropdown */
.mobile-menu {
  background: var(--c-white);
  border-top: 1px solid var(--c-200);
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.35s ease;
}
.mobile-menu.open { max-height: 320px; }
.mobile-menu ul {
  max-width: var(--max-w);
  margin-inline: auto;
  padding: var(--space-xs) var(--space-md) var(--space-md);
}
.mobile-menu a {
  display: block;
  color: var(--c-700);
  font-size: 1rem;
  font-weight: 500;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--c-100);
  transition: color var(--transition);
}
.mobile-menu a:hover { color: var(--c-900); }

/* ─────────────────────────────────────────────────────────────
   HERO — text left, image below button, right half empty
────────────────────────────────────────────────────────────── */
#hero {
  background: var(--c-white);
  padding-top: 4.5rem; /* mobile: clear compact nav */
  min-height: 100svh;
}
@media (min-width: 768px) {
  #hero { padding-top: 13rem; } /* desktop: clear tall nav (136px logo + 2rem×2 padding) */
}

.hero-inner {
  max-width: var(--max-w);
  margin-inline: auto;
  padding: var(--space-xl) var(--space-md) 0;
}

.hero-text {
  margin-bottom: var(--space-lg);
}

.hero-text h1 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(2rem, 4vw, 3.75rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--c-900);
  margin-bottom: var(--space-md);
}
.hero-sub {
  font-size: clamp(1rem, 1.4vw, 1.125rem);
  color: var(--c-600);
  margin-bottom: var(--space-xs);
  line-height: 1.6;
}
.hero-tag {
  font-size: 0.9375rem;
  color: var(--c-400);
  font-style: italic;
  margin-bottom: var(--space-lg);
}

/* stagger */
.hero-text h1.reveal        { transition-delay: 0.05s; }
.hero-text .hero-sub.reveal { transition-delay: 0.15s; }
.hero-text .hero-tag.reveal { transition-delay: 0.24s; }
.hero-text .btn.reveal      { transition-delay: 0.32s; }
#hero .hero-image.reveal    { transition-delay: 0.20s; }

/* full-width image below the text, no crop */
.hero-image img {
  width: 100%;
  height: auto;
  display: block;
}

/* ─────────────────────────────────────────────────────────────
   SERVICES — text + image rows
────────────────────────────────────────────────────────────── */
#services { background: var(--c-white); border-top: 1px solid var(--c-100); }

.services-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.service-row {
  display: grid;
  grid-template-columns: 1fr 240px;
  gap: var(--space-lg);
  align-items: start;
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--c-100);
}
.service-row:last-child { border-bottom: none; }

.service-row-text h3 {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--c-900);
  margin-bottom: 0.625rem;
}
.service-row-text p {
  color: var(--c-600);
  font-size: 0.9375rem;
  line-height: 1.7;
  margin-bottom: var(--space-sm);
}
.service-scope {
  font-size: 0.875rem;
  color: var(--c-400);
  line-height: 1.6;
  margin-bottom: 0 !important;
}
.service-scope strong { color: var(--c-600); }

.service-row-image img {
  width: 100%;
  height: 160px;
  object-fit: cover;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

/* ─────────────────────────────────────────────────────────────
   HOW WE WORK
────────────────────────────────────────────────────────────── */
#how-we-work { background: var(--c-50); border-top: 1px solid var(--c-200); }

#how-we-work .section-header { margin-inline: auto; text-align: center; }
#how-we-work .section-header h2 { margin-inline: auto; }

.hww-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.hww-card {
  background: var(--c-white);
  border: 1px solid var(--c-200);
  border-radius: var(--radius);
  padding: var(--space-lg) var(--space-md);
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
}
.hww-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }

.hww-icon { margin-bottom: var(--space-md); display: flex; justify-content: center; }
.hww-icon img { width: 64px; height: 64px; object-fit: contain; }

.hww-card h3 {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1rem;
  color: var(--c-900);
  margin-bottom: 0.5rem;
}
.hww-card p { color: var(--c-600); font-size: 0.9375rem; line-height: 1.65; }

.hww-cta {
  text-align: center;
  padding-top: var(--space-lg);
  border-top: 1px solid var(--c-200);
}
.hww-cta p {
  color: var(--c-600);
  font-size: 1rem;
  max-width: 56ch;
  margin-inline: auto;
  margin-bottom: var(--space-md);
  line-height: 1.7;
}

/* ─────────────────────────────────────────────────────────────
   BIM GALLERY STRIP — 4 images, full width, between HWW & Projects
────────────────────────────────────────────────────────────── */
#bim-gallery { line-height: 0; /* remove inline gaps */ }

.gallery-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  height: 240px;
}

.gallery-item { overflow: hidden; }
.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.gallery-item:hover img { transform: scale(1.05); }

/* ─────────────────────────────────────────────────────────────
   PROJECTS — dark section, image left + list right
────────────────────────────────────────────────────────────── */
#projects { background: var(--c-900); color: var(--c-white); }

.projects-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}

/* two stacked project images */
.projects-images {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}
.projects-images img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
}

.projects-list h2 {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(1.5rem, 2.5vw, 2.125rem);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-sm);
}

.projects-intro {
  color: var(--c-400);
  font-size: 0.9375rem;
  margin-bottom: var(--space-lg);
  line-height: 1.65;
}

.projects-items {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.projects-items li {
  display: flex;
  flex-direction: column;
  padding: var(--space-md) 0;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  gap: 0.2rem;
}
.projects-items li:first-child { border-top: 1px solid rgba(255,255,255,0.08); }

.project-name {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 1.0625rem;
  color: var(--c-white);
}
.project-location {
  font-size: 0.875rem;
  color: var(--c-400);
}
.project-desc {
  font-size: 0.8125rem;
  color: rgba(148,163,184,0.7);
  font-style: italic;
}
.project-year {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--c-accent);
  letter-spacing: 0.04em;
  margin-top: 0.1rem;
}

/* ─────────────────────────────────────────────────────────────
   ABOUT + TEAM
────────────────────────────────────────────────────────────── */
#about { background: var(--c-white); }

.about-text {
  max-width: 680px;
  margin-bottom: var(--space-xl);
}
.about-text h2 {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(1.5rem, 2.5vw, 2.125rem);
  letter-spacing: -0.02em;
  color: var(--c-900);
  margin-bottom: var(--space-md);
}
.about-text p {
  color: var(--c-600);
  font-size: 1rem;
  line-height: 1.75;
  margin-bottom: var(--space-sm);
}
.about-text p:last-child { margin-bottom: 0; }

.about-tagline {
  color: var(--c-700) !important;
  font-style: italic;
  font-size: 1.0625rem !important;
  padding-left: var(--space-md);
  border-left: 3px solid var(--c-accent);
  margin-top: var(--space-md) !important;
  line-height: 1.55;
}

.about-experience {
  background: var(--c-50);
  border-left: 3px solid var(--c-accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: var(--space-md) var(--space-lg);
  margin-bottom: var(--space-2xl);
}
.about-experience h3 {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.9375rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--c-700);
  margin-bottom: 0.5rem;
}
.about-experience p { color: var(--c-600); font-size: 0.9375rem; line-height: 1.7; }

/* Team */
.team-section { border-top: 1px solid var(--c-100); padding-top: var(--space-xl); }

.team-intro {
  max-width: 680px;
  margin-bottom: var(--space-xl);
}
.team-intro p {
  color: var(--c-600);
  font-size: 1rem;
  line-height: 1.75;
  margin-bottom: var(--space-sm);
}
.team-intro p:last-child { margin-bottom: 0; }

.team-heading {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(1.25rem, 2vw, 1.75rem);
  letter-spacing: -0.02em;
  color: var(--c-900);
  margin-bottom: var(--space-xl);
}

.team-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.team-member {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-md);
}

.team-photo {
  width: 100%;
  aspect-ratio: 3 / 4;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--c-200);
}
.team-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
}

.team-member h3 {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.0625rem;
  color: var(--c-900);
  margin-bottom: 0.2rem;
}
.team-role {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--c-accent);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  line-height: 1.4;
  margin-bottom: 0.375rem;
}
.team-member p:not(.team-role) {
  font-size: 0.9375rem;
  color: var(--c-600);
  line-height: 1.65;
}

/* ─────────────────────────────────────────────────────────────
   CONTACT — white bg, intro left + form right
────────────────────────────────────────────────────────────── */
#contact { background: var(--c-50); border-top: 1px solid var(--c-200); }

.contact-layout {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: var(--space-2xl);
  align-items: start;
}

.contact-intro h2 {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(1.25rem, 2vw, 1.75rem);
  letter-spacing: -0.02em;
  color: var(--c-900);
  margin-bottom: var(--space-sm);
}
.contact-intro p { color: var(--c-600); font-size: 0.9375rem; line-height: 1.7; margin-bottom: var(--space-sm); }
.contact-sub { color: var(--c-400) !important; font-size: 0.875rem !important; }

/* Form */
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.form-group { display: flex; flex-direction: column; gap: 0.35rem; }
.form-group--full { grid-column: 1 / -1; }

.form-group label {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--c-700);
  letter-spacing: 0.01em;
}

.form-group input,
.form-group select,
.form-group textarea {
  background: var(--c-white);
  border: 1px solid var(--c-200);
  border-radius: var(--radius);
  padding: 0.6rem 0.8rem;
  color: var(--c-900);
  font-size: 0.9375rem;
  width: 100%;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--c-400); }

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--c-accent);
  box-shadow: 0 0 0 3px rgba(201,164,48,0.15);
}
.form-group textarea { resize: vertical; min-height: 120px; }

.contact-form .btn { margin-top: var(--space-xs); }

.form-status { margin-top: var(--space-sm); font-size: 0.9375rem; min-height: 1.4em; }
.form-status.success { color: #16a34a; }
.form-status.error   { color: #dc2626; }

/* ─────────────────────────────────────────────────────────────
   FOOTER — mirrors header: white bg, shadow on top
────────────────────────────────────────────────────────────── */
footer {
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: 0 -2px 12px rgba(15,23,42,0.08), 0 -1px 3px rgba(15,23,42,0.04);
  padding: var(--space-lg) 0;
}

.footer-inner {
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: var(--space-md);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.footer-logo img { height: 34px; width: auto; transition: opacity var(--transition); }
.footer-logo:hover img { opacity: 0.75; }

.footer-nav ul { display: flex; gap: var(--space-lg); flex-wrap: wrap; }
.footer-nav a { font-size: 0.875rem; color: var(--c-600); transition: color var(--transition); }
.footer-nav a:hover { color: var(--c-900); }

.footer-copy {
  font-size: 0.8125rem;
  color: var(--c-400);
  width: 100%;
  text-align: center;
  padding-top: var(--space-md);
  border-top: 1px solid var(--c-200);
}

/* ─────────────────────────────────────────────────────────────
   RESPONSIVE — mobile <768px
────────────────────────────────────────────────────────────── */
@media (max-width: 767px) {
  .nav-links     { display: none; }
  .nav-hamburger { display: flex; }

  .section-inner { padding: var(--space-xl) var(--space-sm); }

  /* Hero: let content dictate height, no forced viewport fill */
  #hero { min-height: unset; }

  /* Gallery: 2 cols on mobile */
  .gallery-strip { grid-template-columns: repeat(2, 1fr); height: 280px; }

  /* Services: hide image, text full-width */
  .service-row { grid-template-columns: 1fr; }
  .service-row-image { display: none; }

  /* How We Work: stack */
  .hww-grid { grid-template-columns: 1fr; }

  /* Projects: stack */
  .projects-layout { grid-template-columns: 1fr; }
  .projects-images { order: -1; }

  /* Team: 1 column, photos smaller */
  .team-row { grid-template-columns: 1fr; }
  .team-member { flex-direction: column; align-items: center; }
  .team-photo { width: 60%; }

  /* Contact: stack */
  .contact-layout { grid-template-columns: 1fr; gap: var(--space-lg); }
  .form-row { grid-template-columns: 1fr; }

  .footer-inner { flex-direction: column; align-items: flex-start; }
  .footer-nav ul { gap: var(--space-md); }
}

/* ─────────────────────────────────────────────────────────────
   RESPONSIVE — tablet 768px–1099px
────────────────────────────────────────────────────────────── */
@media (min-width: 768px) and (max-width: 1099px) {
  .nav-links     { display: flex; }
  .nav-hamburger { display: none; }

  .hero-inner { grid-template-columns: 1fr 1fr; }

  .service-row { grid-template-columns: 1fr 180px; }

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

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

  .team-row { grid-template-columns: repeat(3, 1fr); }
  .team-member { flex-direction: column; }

  .contact-layout { grid-template-columns: 240px 1fr; }
}

/* ─────────────────────────────────────────────────────────────
   RESPONSIVE — desktop 1100px+
────────────────────────────────────────────────────────────── */
@media (min-width: 1100px) {
  .nav-links     { display: flex; }
  .nav-hamburger { display: none; }
}