/* ============================================================
   BIM ANALYTICS — Section/component classes (ported 1:1)
   Navbar, hero, marquee, timeline, projects, team, CTA,
   contact, footer — from Pagina Web/css/style.css
   ============================================================ */

/* ============ Navbar ============ */
.nav { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; border-bottom: 1px solid transparent;
  transition: background 0.4s var(--ease), border-color 0.4s, backdrop-filter 0.4s; }
.nav.is-scrolled { background: rgba(8, 12, 22, 0.72); backdrop-filter: blur(var(--blur-nav)); -webkit-backdrop-filter: blur(var(--blur-nav)); border-bottom: 1px solid var(--border); }
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: var(--nav-h); }
.nav__links { display: flex; align-items: center; gap: 34px; }
.nav__links a { font-size: 0.95rem; color: var(--muted); font-weight: 500; position: relative; transition: color 0.25s; }
.nav__links a:not(.nav__cta)::after { content: ""; position: absolute; left: 0; bottom: -6px; height: 2px; width: 0; background: var(--grad); transition: width 0.3s var(--ease); }
.nav__links a:not(.nav__cta):hover { color: var(--text); }
.nav__links a:not(.nav__cta):hover::after { width: 100%; }
.nav__cta { padding: 10px 20px; border-radius: var(--radius-pill); color: #fff !important; font-weight: 600;
  background: var(--grad); box-shadow: var(--shadow-cta); transition: transform 0.25s var(--ease), box-shadow 0.25s; }
.nav__cta:hover { transform: translateY(-2px); box-shadow: 0 10px 28px rgba(59, 130, 246, 0.5); }

/* ============ Hero ============ */
.hero { position: relative; min-height: 100svh; display: flex; align-items: center; padding: 120px 0 80px; overflow: hidden; }
.hero__inner { position: relative; max-width: 880px; }
.hero__eyebrow { margin-bottom: 26px; }
.hero__title { font-size: var(--fs-hero); font-weight: 800; margin-bottom: 24px; }
.hero__lead { font-size: var(--fs-lead); color: var(--muted); max-width: 640px; margin: 0 0 38px; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 60px; }
.hero__stats { display: flex; flex-wrap: wrap; gap: clamp(28px, 6vw, 64px); }
.hero__stat strong { display: block; font-family: var(--font-head); font-size: clamp(1.8rem, 4vw, 2.6rem); font-weight: 800; background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.hero__stat span { font-size: 0.9rem; color: var(--muted-2); }

/* ============ Marquee ============ */
.marquee { border-block: 1px solid var(--border); padding: 22px 0; overflow: hidden; background: var(--surface-3); }
.marquee__track { display: flex; align-items: center; gap: 30px; width: max-content; animation: ba-marquee 38s linear infinite; }
.marquee__track span { font-family: var(--font-head); font-weight: 600; font-size: 1rem; color: var(--muted); white-space: nowrap; }
.marquee__track i { color: var(--accent); font-style: normal; }
.marquee:hover .marquee__track { animation-play-state: paused; }
@keyframes ba-marquee { to { transform: translateX(-50%); } }

/* ============ Card grid ============ */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(290px, 1fr)); gap: var(--gap-cards); }

/* ============ Timeline ============ */
.timeline { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 24px; list-style: none; padding: 0; margin: 0; }
.timeline__item { position: relative; padding: 30px 26px; border-radius: var(--radius); background: var(--surface); border: 1px solid var(--border); transition: transform var(--dur-base) var(--ease), border-color var(--dur-base); }
.timeline__item:hover { transform: translateY(-5px); border-color: var(--border-2); }
.timeline__num { font-family: var(--font-head); font-weight: 800; font-size: 2.4rem; background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; display: block; margin-bottom: 14px; }
.timeline__item h3 { font-size: 1.15rem; margin-bottom: 8px; }
.timeline__item p { color: var(--muted); font-size: 0.95rem; margin: 0; }

/* ============ Projects ============ */
.projects { display: grid; grid-template-columns: repeat(6, 1fr); gap: var(--gap-cards); }
.project { grid-column: span 2; border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--border); background: var(--surface); position: relative; display: flex; flex-direction: column; min-height: 340px; transition: transform 0.4s var(--ease), border-color 0.4s, box-shadow 0.4s; }
.project--tall { grid-row: span 2; }
.project--wide { grid-column: span 4; }
.project:hover { transform: translateY(var(--lift-card)); border-color: var(--border-2); box-shadow: var(--shadow-project); }
.project__media { flex: 1; min-height: 170px; position: relative; overflow: hidden; background: var(--bg-3); transition: transform 0.5s var(--ease); }
.project:hover .project__media { transform: scale(1.04); }
.project__media::before { content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(var(--grid-line-media) 1px, transparent 1px), linear-gradient(90deg, rgba(59, 130, 246, 0.12) 1px, transparent 1px);
  background-size: 26px 26px;
  mask-image: linear-gradient(180deg, #000, transparent); -webkit-mask-image: linear-gradient(180deg, #000, transparent); }
.project__media::after { content: ""; position: absolute; inset: 0; }
.project__media[data-scene="tower"]::after { background: radial-gradient(circle at 50% 120%, rgba(34, 211, 238, 0.4), transparent 60%), conic-gradient(from 200deg at 50% 100%, rgba(59, 130, 246, 0.25), transparent); }
.project__media[data-scene="bridge"]::after { background: radial-gradient(ellipse at 0% 100%, rgba(139, 92, 246, 0.35), transparent 55%), radial-gradient(ellipse at 100% 0%, rgba(34, 211, 238, 0.3), transparent 55%); }
.project__media[data-scene="plant"]::after { background: radial-gradient(circle at 70% 30%, rgba(59, 130, 246, 0.4), transparent 55%); }
.project__media[data-scene="campus"]::after { background: radial-gradient(ellipse at 30% 100%, rgba(34, 211, 238, 0.35), transparent 60%), radial-gradient(ellipse at 80% 20%, rgba(139, 92, 246, 0.3), transparent 55%); }
.project__body { padding: 24px 26px 28px; position: relative; }
.project__body h3 { font-size: 1.25rem; margin-bottom: 8px; }
.project__body p { color: var(--muted); font-size: 0.95rem; margin: 0 0 16px; }
.project__metric { font-size: 0.92rem; color: var(--muted-2); }
.project__metric strong { font-family: var(--font-head); font-size: 1.3rem; background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; margin-right: 6px; }
.project__body .tag { margin-bottom: 14px; }

/* ============ Team ============ */
.team { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 22px; }
.member { text-align: center; padding: 30px 20px; border-radius: var(--radius); background: var(--surface); border: 1px solid var(--border); transition: transform var(--dur-base) var(--ease), border-color var(--dur-base); }
.member:hover { transform: translateY(-5px); border-color: var(--border-2); }
.member__avatar { width: 84px; height: 84px; border-radius: 50%; margin: 0 auto 16px; display: grid; place-items: center; background: var(--grad-soft); border: 1px solid var(--border-2); position: relative; }
.member__avatar::after { content: attr(data-initials); font-family: var(--font-head); font-weight: 700; font-size: 1.5rem; background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.member h3 { font-size: 1.08rem; margin-bottom: 2px; }
.member span { color: var(--muted); font-size: 0.88rem; }

/* ============ CTA band ============ */
.cta-band { padding: clamp(60px, 9vw, 90px) 0; }
.cta-band__inner { text-align: center; padding: clamp(44px, 7vw, 72px) 30px; border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.12), rgba(59, 130, 246, 0.1), rgba(139, 92, 246, 0.12));
  border: 1px solid var(--border-2); position: relative; overflow: hidden; }
.cta-band__inner::before { content: ""; position: absolute; inset: 0; background: radial-gradient(circle at 50% 0%, rgba(34, 211, 238, 0.18), transparent 60%); }
.cta-band__inner > * { position: relative; }
.cta-band h2 { font-size: var(--fs-cta); margin-bottom: 14px; }
.cta-band p { color: var(--muted); margin: 0 0 30px; font-size: 1.08rem; }

/* ============ Contact ============ */
.contact { display: grid; grid-template-columns: 1fr 1.1fr; gap: clamp(36px, 6vw, 72px); align-items: start; }
.contact__list { margin: 32px 0 0; display: grid; gap: 16px; list-style: none; padding: 0; }
.contact__list li { display: flex; align-items: center; gap: 14px; }
.contact__ic { width: 42px; height: 42px; border-radius: var(--radius-sm); display: grid; place-items: center; background: var(--grad-soft); border: 1px solid var(--border-2); color: var(--accent); font-size: 1.1rem; }
.contact__list a:hover { color: var(--accent); }
.contact__form { padding: clamp(28px, 4vw, 40px); border-radius: var(--radius-lg); background: var(--surface); border: 1px solid var(--border); display: grid; gap: var(--gap-form); }
.form__note { font-size: 0.92rem; min-height: 1.2em; margin: 0; }
.form__note.ok { color: var(--success); }
.form__note.err { color: var(--error); }

/* ============ Footer ============ */
.footer { border-top: 1px solid var(--border); padding: 60px 0 30px; background: var(--surface-3); }
.footer__inner { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 30px; padding-bottom: 34px; border-bottom: 1px solid var(--border); }
.footer__brand { max-width: 320px; }
.footer__brand p { color: var(--muted); margin: 12px 0 0; font-size: 0.95rem; }
.footer__nav { display: flex; flex-wrap: wrap; gap: 22px; align-content: flex-start; }
.footer__nav a { color: var(--muted); font-size: 0.95rem; transition: color 0.25s; }
.footer__nav a:hover { color: var(--accent); }
.footer__bottom { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; padding-top: 24px; color: var(--muted-2); font-size: 0.86rem; }

/* ============ Responsive ============ */
@media (max-width: 980px) {
  .projects { grid-template-columns: repeat(2, 1fr); }
  .project, .project--tall, .project--wide { grid-column: span 1; grid-row: auto; }
  .contact { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .projects { grid-template-columns: 1fr; }
}