/* =========================================================
   ITP - Italiana Progetti Studio Associato
   Design system + global styles
   ========================================================= */

/* ----------- Tokens (brand: ITP — blu / grafite) ----------- */
:root {
  /* Color — brand palette derived from logo (#2651A6 #295FA6 #5D7CA6 #F2F2F2 #404040) */
  --c-paper:    #F2F2F2;            /* light gray bg */
  --c-paper-2:  #E6E6E6;            /* slightly darker section bg */
  --c-paper-3:  #FAFAFA;            /* lightest */
  --c-ink:      #404040;             /* primary text — graphite */
  --c-ink-2:    #2A2A2A;             /* deeper headlines */
  --c-graph:    #5A5A5A;             /* secondary text */
  --c-mute:     #8A8A8A;             /* tertiary text / metadata */
  --c-blue:     #2651A6;             /* primary brand blue (logo "i") */
  --c-blue-2:   #295FA6;             /* slightly lighter brand blue */
  --c-blue-3:   #5D7CA6;             /* muted blue (secondary) */
  --c-blue-4:   #1A3D80;             /* deeper blue for hover */
  --c-navy:     #142442;             /* dark blue for dark sections */
  --c-navy-2:   #0E1A33;             /* deepest navy */
  --c-line:     rgba(64, 64, 64, 0.14);
  --c-line-2:   rgba(64, 64, 64, 0.07);
  --c-line-inv: rgba(242, 242, 242, 0.18);
  --c-glass:    rgba(242, 242, 242, 0.80);
  --c-rust:     #B0432F;             /* error state */

  /* Legacy aliases (back-compat with any old class) */
  --c-bronze:   var(--c-blue);
  --c-bronze-2: var(--c-blue-4);

  /* Type */
  --ff-display: "Space Grotesk", "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  --ff-body:    "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --ff-mono:    "JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;

  --fs-mega:  clamp(3.5rem, 11vw, 11rem);
  --fs-h1:    clamp(2.5rem,  7vw,  7rem);
  --fs-h2:    clamp(2rem,    5vw,  4.5rem);
  --fs-h3:    clamp(1.5rem,  3vw,  2.5rem);
  --fs-h4:    clamp(1.125rem,1.6vw,1.5rem);
  --fs-body:  clamp(0.95rem, 1.05vw, 1.0625rem);
  --fs-lead:  clamp(1.05rem, 1.4vw,  1.35rem);
  --fs-sm:    0.8125rem;
  --fs-mono:  0.75rem;

  /* Space */
  --s-1: 0.5rem;
  --s-2: 1rem;
  --s-3: 1.5rem;
  --s-4: 2rem;
  --s-5: 3rem;
  --s-6: 4.5rem;
  --s-7: 6rem;
  --s-8: 9rem;
  --s-9: 12rem;

  /* Layout */
  --container: min(92vw, 84rem);
  --gutter:    clamp(1rem, 2.5vw, 2rem);
  --radius:    0.25rem;

  /* Motion */
  --ease-out:    cubic-bezier(0.22, 1, 0.36, 1);
  --ease-inout:  cubic-bezier(0.65, 0, 0.35, 1);
  --d-fast:      0.25s;
  --d-base:      0.5s;
  --d-slow:      0.9s;

  /* Header */
  --hdr-h: 4.5rem;
}

/* ----------- Reset ----------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }
html, body { height: 100%; }
html {
  font-size: 100%;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}
body {
  font-family: var(--ff-body);
  font-size: var(--fs-body);
  line-height: 1.55;
  color: var(--c-ink);
  background: var(--c-paper);
  font-feature-settings: "ss01", "cv11";
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img, picture, video, svg {
  display: block;
  max-width: 100%;
  height: auto;
}
img { font-style: normal; background-repeat: no-repeat; background-size: cover; }
button, input, select, textarea { font: inherit; color: inherit; }
button { background: none; border: 0; cursor: pointer; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
:focus-visible {
  outline: 2px solid var(--c-bronze);
  outline-offset: 3px;
  border-radius: 2px;
}
::selection { background: var(--c-ink); color: var(--c-paper); }

/* ----------- Typography ----------- */
.t-display {
  font-family: var(--ff-display);
  font-weight: 500;
  font-style: normal;
  font-optical-sizing: auto;
  letter-spacing: -0.02em;
  line-height: 0.92;
}
.t-mono {
  font-family: var(--ff-mono);
  font-size: var(--fs-mono);
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.t-eyebrow {
  font-family: var(--ff-mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-graph);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}
.t-eyebrow::before {
  content: "";
  width: 1.5rem; height: 1px;
  background: currentColor;
}
.t-lead {
  font-size: var(--fs-lead);
  line-height: 1.5;
  color: var(--c-graph);
  max-width: 56ch;
}
h1, h2, h3, h4 {
  font-family: var(--ff-display);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1;
  color: var(--c-ink);
}
h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); line-height: 1.05; }
h4 { font-size: var(--fs-h4); line-height: 1.2; font-weight: 400; }
p  { max-width: 64ch; }

/* ----------- Layout ----------- */
.container {
  width: var(--container);
  margin-inline: auto;
}
.section {
  padding-block: clamp(4rem, 9vw, 8rem);
  position: relative;
}
.section--tight { padding-block: clamp(3rem, 6vw, 5rem); }
.section--dark {
  background: var(--c-navy);
  color: var(--c-paper);
}
.section--dark h1, .section--dark h2, .section--dark h3, .section--dark h4 { color: var(--c-paper); }
.section--dark .t-lead { color: rgba(242, 242, 242, 0.7); }
.section--dark .t-eyebrow { color: rgba(242, 242, 242, 0.65); }

.grid {
  display: grid;
  gap: var(--gutter);
  grid-template-columns: repeat(12, 1fr);
}
@media (max-width: 768px) {
  .grid { grid-template-columns: repeat(6, 1fr); }
}

.divider {
  height: 1px;
  background: var(--c-line);
  width: 100%;
}
.section--dark .divider { background: var(--c-line-inv); }

/* ----------- Header ----------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--hdr-h);
  z-index: 50;
  display: flex;
  align-items: center;
  pointer-events: none;
  transition: background var(--d-base) var(--ease-out),
              backdrop-filter var(--d-base) var(--ease-out),
              border-color var(--d-base) var(--ease-out);
  border-bottom: 1px solid transparent;
}
.site-header > * { pointer-events: auto; }
.site-header.is-scrolled {
  background: var(--c-glass);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom-color: var(--c-line);
}

/* On the homepage, before the user starts scrolling the header sits on top of
   the dark hero. Invert text + brand mark so they remain legible. */
.page-home .site-header:not(.is-scrolled) .brand,
.page-home .site-header:not(.is-scrolled) .nav a,
.page-home .site-header:not(.is-scrolled) .brand__txt span {
  color: var(--c-paper);
}
.page-home .site-header:not(.is-scrolled) .brand__mark { color: var(--c-paper); }
.page-home .site-header:not(.is-scrolled) .brand__txt span:last-child {
  color: rgba(242, 242, 242, 0.65);
}
.page-home .site-header:not(.is-scrolled) .nav-cta {
  border-color: rgba(242, 242, 242, 0.4);
  color: var(--c-paper);
}
.page-home .site-header:not(.is-scrolled) .nav-cta:hover {
  background: var(--c-paper);
  color: var(--c-navy);
  border-color: var(--c-paper);
}
.page-home .site-header:not(.is-scrolled) .menu-toggle {
  border-color: rgba(242, 242, 242, 0.3);
}
.page-home .site-header:not(.is-scrolled) .menu-toggle span {
  background: var(--c-paper);
}
.page-home .site-header:not(.is-scrolled) .nav a::after {
  background: var(--c-paper);
}
.site-header__inner {
  width: var(--container);
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-3);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  font-family: var(--ff-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-ink);
  font-weight: 500;
}
.brand__mark {
  width: 2.5rem; height: 2.5rem;
  display: block;
  flex-shrink: 0;
  color: var(--c-ink);
}
.brand__mark img { width: 100%; height: 100%; display: block; }
.brand__txt {
  display: none;
  flex-direction: column;
  gap: 2px;
  line-height: 1;
}
.brand__txt span {
  font-family: var(--ff-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.brand__txt span:first-child { color: var(--c-ink); font-weight: 500; }
.brand__txt span:last-child { color: var(--c-graph); font-weight: 400; }
@media (min-width: 720px) { .brand__txt { display: flex; } }

.nav { display: none; }
@media (min-width: 900px) {
  .nav { display: flex; gap: var(--s-4); align-items: center; }
}
.nav a {
  font-size: 0.875rem;
  letter-spacing: 0.02em;
  position: relative;
  padding: 0.25rem 0;
}
.nav a::after {
  content: "";
  position: absolute;
  inset: auto 0 -2px 0;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right center;
  transition: transform var(--d-base) var(--ease-out);
}
.nav a:hover::after, .nav a[aria-current="page"]::after { transform: scaleX(1); transform-origin: left center; }
.nav a[aria-current="page"] { color: var(--c-bronze-2); }

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 1rem;
  border: 1px solid var(--c-ink);
  border-radius: 999px;
  font-size: 0.8125rem;
  transition: background var(--d-fast), color var(--d-fast);
}
.nav-cta:hover { background: var(--c-blue); color: var(--c-paper); border-color: var(--c-blue); }

/* Mobile menu button */
.menu-toggle {
  width: 2.75rem; height: 2.75rem;
  display: grid; place-items: center;
  border: 1px solid var(--c-line);
  border-radius: 999px;
  background: transparent;
}
@media (min-width: 900px) { .menu-toggle { display: none; } }
.menu-toggle span {
  display: block;
  width: 18px; height: 1.5px;
  background: var(--c-ink);
  transition: transform var(--d-fast) var(--ease-out), opacity var(--d-fast);
  position: relative;
}
.menu-toggle span + span { margin-top: 5px; }
body.menu-open .menu-toggle span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
body.menu-open .menu-toggle span:nth-child(2) { opacity: 0; }
body.menu-open .menu-toggle span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* Mobile menu panel */
.mobile-nav {
  position: fixed;
  inset: 0;
  background: var(--c-navy);
  color: var(--c-paper);
  z-index: 45;
  padding: calc(var(--hdr-h) + var(--s-4)) var(--gutter) var(--s-5);
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
  transform: translateY(-100%);
  transition: transform var(--d-base) var(--ease-inout);
  visibility: hidden;
}
body.menu-open .mobile-nav { transform: translateY(0); visibility: visible; }
.mobile-nav a {
  font-family: var(--ff-display);
  font-style: normal;
  font-weight: 500;
  font-size: clamp(2.5rem, 9vw, 4.5rem);
  letter-spacing: -0.02em;
  border-bottom: 1px solid var(--c-line-inv);
  padding-block: var(--s-2);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}
.mobile-nav a span { font-family: var(--ff-mono); font-size: 0.75rem; letter-spacing: 0.16em; opacity: 0.6; font-style: normal; }
.mobile-nav__foot {
  margin-top: auto;
  display: flex; flex-wrap: wrap; gap: var(--s-2) var(--s-4);
  font-size: 0.85rem;
  color: rgba(242, 242, 242, 0.7);
}

/* ----------- Buttons & links ----------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.875rem 1.4rem;
  border-radius: 999px;
  font-size: 0.9rem;
  letter-spacing: 0.02em;
  border: 1px solid var(--c-blue);
  background: var(--c-blue);
  color: var(--c-paper);
  transition: transform var(--d-fast) var(--ease-out),
              background var(--d-fast),
              color var(--d-fast);
  position: relative;
  overflow: hidden;
  isolation: isolate;
}
.btn::before {
  content: "";
  position: absolute; inset: 0;
  background: var(--c-blue-4);
  transform: translateY(101%);
  transition: transform var(--d-base) var(--ease-out);
  z-index: -1;
}
.btn:hover::before { transform: translateY(0); }
.btn--ghost {
  background: transparent;
  color: var(--c-ink);
  border-color: var(--c-ink);
}
.btn--ghost:hover { color: var(--c-paper); }
.btn--ghost::before { background: var(--c-blue); }

.btn .arr {
  width: 1rem; height: 1rem;
  transition: transform var(--d-fast) var(--ease-out);
}
.btn:hover .arr { transform: translateX(3px); }

.linker {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  position: relative;
  font-size: 0.95rem;
  padding-bottom: 0.25rem;
  border-bottom: 1px solid var(--c-line);
  color: var(--c-ink);
  transition: border-color var(--d-fast), color var(--d-fast), gap var(--d-fast);
}
.linker:hover { border-color: var(--c-ink); gap: 0.85rem; color: var(--c-bronze-2); }

/* ----------- Hero ----------- */
.hero {
  min-height: 100svh;
  position: relative;
  display: flex;
  align-items: flex-end;
  padding: calc(var(--hdr-h) + var(--s-3)) 0 var(--s-5);
  overflow: hidden;
  isolation: isolate;
}
.hero__bg {
  position: absolute;
  inset: 0;
  z-index: -2;
  overflow: hidden;
}
.hero__bg img {
  width: 100%; height: 100%;
  object-fit: cover;
  filter: brightness(0.65) saturate(0.85);
  will-change: transform;
}
.hero__bg::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(14,26,51,0.35) 0%, rgba(14,26,51,0.55) 60%, var(--c-paper) 100%);
}
.hero__inner {
  width: var(--container);
  margin-inline: auto;
  display: grid;
  gap: var(--s-4);
  color: var(--c-paper);
}
.hero__top {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: var(--s-4);
  flex-wrap: wrap;
  margin-bottom: var(--s-5);
}
.hero__crumbs {
  display: flex; flex-wrap: wrap; gap: var(--s-1) var(--s-3);
  color: rgba(242,242,242,0.78);
}
.hero__crumbs span { display: inline-flex; gap: 0.5rem; align-items: center; }
.hero__crumbs span::before {
  content: "·";
  display: inline-block;
}
.hero__crumbs span:first-child::before { display: none; }

.hero__title {
  font-family: var(--ff-display);
  font-weight: 500;
  font-style: normal;
  font-optical-sizing: auto;
  letter-spacing: -0.025em;
  line-height: 0.9;
  font-size: var(--fs-mega);
  color: var(--c-paper);
  text-wrap: balance;
}
.hero__title .roman { color: var(--c-blue-3); font-weight: 400; }

.hero__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s-3);
  margin-top: var(--s-4);
}
@media (min-width: 900px) {
  .hero__row { grid-template-columns: 1.2fr 0.8fr; align-items: end; }
}
.hero__sub {
  font-size: var(--fs-lead);
  color: rgba(242,242,242,0.85);
  max-width: 48ch;
  line-height: 1.45;
}
.hero__meta {
  display: flex;
  flex-direction: column;
  gap: var(--s-2);
  border-top: 1px solid var(--c-line-inv);
  padding-top: var(--s-3);
  font-family: var(--ff-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(242,242,242,0.78);
}
.hero__meta b { color: var(--c-paper); font-weight: 500; }

/* Discipline strip — replaces the old wide marquee */
.strip {
  border-block: 1px solid var(--c-line);
  background: var(--c-paper-3);
  padding-block: 0.85rem;
}
.strip__inner {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  font-family: var(--ff-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.strip__label {
  color: var(--c-blue);
  flex-shrink: 0;
}
.strip__label::before {
  content: "▸ ";
  margin-right: 0.25rem;
  color: var(--c-blue);
}
.strip__list {
  color: var(--c-graph);
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}
@media (max-width: 720px) {
  .strip__inner { gap: 0.75rem; flex-wrap: wrap; }
  .strip__list { font-size: 0.65rem; }
}

/* ----------- Studio intro section ----------- */
.intro {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s-4);
}
@media (min-width: 900px) {
  .intro { grid-template-columns: 0.4fr 0.6fr; gap: var(--s-7); }
}
.intro__label { align-self: start; position: sticky; top: calc(var(--hdr-h) + var(--s-3)); }
.intro__body {
  font-family: var(--ff-display);
  font-style: normal;
  font-weight: 500;
  font-size: clamp(1.5rem, 2.6vw, 2.4rem);
  line-height: 1.18;
  letter-spacing: -0.015em;
  color: var(--c-ink);
}
.intro__body em { color: var(--c-blue); font-style: normal; font-weight: 600; }
.intro__body p + p { margin-top: var(--s-3); }

/* Stats */
.stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--s-3);
}
@media (min-width: 720px) {
  .stats { grid-template-columns: repeat(4, 1fr); }
}
.stat {
  border-top: 1px solid var(--c-line-inv);
  padding-top: var(--s-3);
}
.section--dark .stat { border-color: var(--c-line-inv); }
.stat__num {
  font-family: var(--ff-display);
  font-style: normal;
  font-weight: 500;
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  line-height: 1;
  letter-spacing: -0.03em;
}
.stat__lbl {
  font-family: var(--ff-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  margin-top: var(--s-2);
  color: rgba(242,242,242,0.7);
}
.section:not(.section--dark) .stat__lbl { color: var(--c-graph); }

/* ----------- Featured projects (home grid) ----------- */
.feat {
  display: grid;
  gap: var(--gutter) var(--gutter);
  grid-template-columns: repeat(12, 1fr);
}
.feat__item {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  background: var(--c-paper-2);
}
.feat__item:nth-child(1) { grid-column: span 12; aspect-ratio: 16/10; }
.feat__item:nth-child(2) { grid-column: span 7; aspect-ratio: 4/3; }
.feat__item:nth-child(3) { grid-column: span 5; aspect-ratio: 4/5; }
.feat__item:nth-child(4) { grid-column: span 5; aspect-ratio: 4/5; }
.feat__item:nth-child(5) { grid-column: span 7; aspect-ratio: 4/3; }
@media (max-width: 900px) {
  .feat__item, .feat__item:nth-child(n) {
    grid-column: span 12;
    aspect-ratio: 4/3;
  }
}
.feat__img {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 1.4s var(--ease-out);
  will-change: transform;
}
.feat__item:hover .feat__img { transform: scale(1.04); }
.feat__overlay {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(14,26,51,0) 35%, rgba(14,26,51,0.78) 100%);
  pointer-events: none;
}
.feat__caption {
  position: absolute;
  left: var(--s-3); right: var(--s-3); bottom: var(--s-3);
  color: var(--c-paper);
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--s-2);
  flex-wrap: wrap;
}
.feat__caption .t-mono { color: var(--c-bronze); }
.feat__caption h3 {
  color: var(--c-paper);
  font-size: clamp(1.25rem, 2.4vw, 2rem);
  letter-spacing: -0.015em;
  line-height: 1.05;
  max-width: 80%;
}
.feat__caption .feat__cta {
  width: 2.75rem; height: 2.75rem;
  border-radius: 999px;
  background: var(--c-paper);
  color: var(--c-ink);
  display: grid; place-items: center;
  flex-shrink: 0;
  transition: background var(--d-fast), color var(--d-fast), transform var(--d-fast);
}
.feat__item:hover .feat__cta { background: var(--c-bronze); color: var(--c-ink); transform: rotate(-45deg); }

/* Section header */
.s-head {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  justify-content: space-between;
  gap: var(--s-3);
  margin-bottom: var(--s-5);
  border-bottom: 1px solid var(--c-line);
  padding-bottom: var(--s-3);
}
.section--dark .s-head { border-color: var(--c-line-inv); }
.s-head__l { display: grid; gap: var(--s-2); max-width: 60ch; }
.s-head__title { letter-spacing: -0.025em; line-height: 1; }

/* ----------- Capabilities ----------- */
.caps {
  display: grid;
  gap: 0;
  grid-template-columns: 1fr;
  border-top: 1px solid var(--c-line-inv);
}
@media (min-width: 720px) { .caps { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1100px) { .caps { grid-template-columns: repeat(3, 1fr); } }
.cap {
  border-bottom: 1px solid var(--c-line-inv);
  border-right: 1px solid var(--c-line-inv);
  padding: var(--s-4);
  display: grid;
  gap: var(--s-3);
  align-content: start;
  position: relative;
  transition: background var(--d-base);
}
.cap:hover { background: rgba(38, 81, 166,0.06); }
.cap__num {
  font-family: var(--ff-mono);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  color: rgba(242,242,242,0.55);
}
.cap h3 {
  font-size: clamp(1.5rem, 2.4vw, 2.1rem);
  font-style: normal;
  color: var(--c-paper);
}
.cap p { color: rgba(242,242,242,0.7); font-size: 0.95rem; }
.cap__icon {
  width: 2.5rem; height: 2.5rem;
  border: 1px solid var(--c-line-inv);
  border-radius: 50%;
  display: grid; place-items: center;
  color: var(--c-bronze);
}

/* ----------- Project filters ----------- */
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: var(--s-4);
}
.filter-pill {
  padding: 0.5rem 1rem;
  border: 1px solid var(--c-line);
  border-radius: 999px;
  font-size: 0.85rem;
  background: transparent;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: background var(--d-fast), color var(--d-fast), border-color var(--d-fast);
  font-family: var(--ff-body);
  color: var(--c-graph);
}
.filter-pill__count {
  font-family: var(--ff-mono);
  font-size: 0.65rem;
  opacity: 0.6;
}
.filter-pill:hover { border-color: var(--c-ink); color: var(--c-ink); }
.filter-pill.is-active {
  background: var(--c-ink);
  color: var(--c-paper);
  border-color: var(--c-ink);
}

/* Project grid */
.proj-grid {
  display: grid;
  gap: var(--gutter);
  grid-template-columns: repeat(12, 1fr);
}
.proj-card {
  position: relative;
  cursor: pointer;
  isolation: isolate;
  background: var(--c-paper-2);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--d-base) var(--ease-out);
  grid-column: span 12;
}
@media (min-width: 720px) { .proj-card { grid-column: span 6; } }
@media (min-width: 1100px) { .proj-card { grid-column: span 4; } }
.proj-card.span-6 { grid-column: span 12; }
@media (min-width: 720px) { .proj-card.span-6 { grid-column: span 6; } }
@media (min-width: 1100px) { .proj-card.span-6 { grid-column: span 6; } }
.proj-card[hidden] { display: none; }

.proj-card__media {
  aspect-ratio: 4/3;
  overflow: hidden;
  position: relative;
}
.proj-card__media img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 1.2s var(--ease-out), filter var(--d-base);
  will-change: transform;
}
.proj-card:hover .proj-card__media img { transform: scale(1.05); }

/* Typographic cover (no authentic image available) */
.proj-card__media--type {
  background: var(--c-ink);
  color: var(--c-paper);
  position: relative;
  overflow: hidden;
}
.proj-card__media--type::before {
  content: "";
  position: absolute; inset: 0;
  background:
    /* blueprint grid */
    repeating-linear-gradient(0deg,  transparent 0 1.5rem, rgba(242,242,242,0.05) 1.5rem 1.51rem),
    repeating-linear-gradient(90deg, transparent 0 1.5rem, rgba(242,242,242,0.05) 1.5rem 1.51rem),
    /* subtle blue glow upper-right */
    radial-gradient(ellipse 60% 80% at top right, rgba(93, 124, 166, 0.22) 0%, transparent 60%);
  pointer-events: none;
  opacity: 0.85;
  transition: opacity var(--d-base);
}
.proj-card:hover .proj-card__media--type::before { opacity: 1; }
.proj-card__media--type::after {
  /* subtle "drawing pin" mark in opposite corner */
  content: "";
  position: absolute;
  bottom: 0.85rem; right: 0.85rem;
  width: 2.25rem; height: 2.25rem;
  border: 1px solid rgba(242, 242, 242, 0.18);
  border-radius: 999px;
  pointer-events: none;
}
.proj-card__type {
  position: absolute;
  inset: 0;
  padding: var(--s-3);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: flex-start;
}
.proj-card__type-id {
  font-family: var(--ff-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-bronze);
}
.proj-card__type-title {
  font-family: var(--ff-display);
  font-style: normal;
  font-weight: 500;
  font-size: clamp(1.4rem, 2.8vw, 2.2rem);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--c-paper);
  text-wrap: balance;
  max-width: 90%;
  margin-block: auto var(--s-2);
}
.proj-card__type-place {
  font-family: var(--ff-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(242,242,242,0.6);
}

/* Per-category accent on typographic covers */
.proj-card__media--type[data-cat="scolastica"]   { background: linear-gradient(165deg, #2c4881 0%, #142442 100%); }
.proj-card__media--type[data-cat="terziario"]    { background: linear-gradient(165deg, #1f3a73 0%, #0E1A33 100%); }
.proj-card__media--type[data-cat="commerciale"]  { background: linear-gradient(165deg, #2c5599 0%, #122648 100%); }
.proj-card__media--type[data-cat="sportivi"]     { background: linear-gradient(165deg, #25467a 0%, #0E1A33 100%); }
.proj-card__media--type[data-cat="restauro"]     { background: linear-gradient(165deg, #34507c 0%, #14233f 100%); }
.proj-card__media--type[data-cat="residenziale"] { background: linear-gradient(165deg, #2a3e63 0%, #11192e 100%); }

/* Drawer cover typographic variant */
.drawer__cover--type {
  background: var(--c-ink);
  color: var(--c-paper);
  position: relative;
  overflow: hidden;
}
.drawer__cover--type::before {
  content: "";
  position: absolute; inset: 0;
  background:
    repeating-linear-gradient(135deg, transparent 0 1rem, rgba(38, 81, 166,0.06) 1rem 1.04rem),
    radial-gradient(ellipse at top right, rgba(38, 81, 166,0.20) 0%, transparent 55%);
}
.drawer__cover-inner {
  position: absolute; inset: 0;
  padding: var(--s-4);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--s-3);
}
.drawer__cover-title {
  font-family: var(--ff-display);
  font-style: normal;
  font-weight: 500;
  font-size: clamp(2rem, 5vw, 4rem);
  line-height: 0.95;
  letter-spacing: -0.025em;
  color: var(--c-paper);
  max-width: 92%;
}

.proj-card__body {
  padding: var(--s-2) var(--s-1) var(--s-3);
  display: grid; gap: 0.4rem;
}
.proj-card__cat {
  font-family: var(--ff-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--c-bronze-2);
  display: flex; justify-content: space-between;
}
.proj-card__title {
  font-family: var(--ff-display);
  font-style: normal;
  font-weight: 500;
  font-size: clamp(1.2rem, 1.8vw, 1.5rem);
  line-height: 1.15;
  letter-spacing: -0.015em;
}
.proj-card__meta {
  font-size: 0.85rem;
  color: var(--c-graph);
  display: flex;
  gap: var(--s-2);
  flex-wrap: wrap;
}

/* ----------- Drawer (project detail) ----------- */
.drawer {
  position: fixed;
  inset: 0;
  z-index: 80;
  pointer-events: none;
  visibility: hidden;
}
.drawer.is-open { pointer-events: auto; visibility: visible; }
.drawer__back {
  position: absolute;
  inset: 0;
  background: rgba(14,26,51,0.5);
  opacity: 0;
  transition: opacity var(--d-base);
  backdrop-filter: blur(4px);
}
.drawer.is-open .drawer__back { opacity: 1; }
.drawer__panel {
  position: absolute;
  top: 0; right: 0; bottom: 0;
  width: min(100%, 56rem);
  background: var(--c-paper);
  transform: translateX(101%);
  transition: transform 0.7s var(--ease-inout);
  overflow-y: auto;
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
}
.drawer.is-open .drawer__panel { transform: translateX(0); }
.drawer__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--s-3) var(--s-4);
  border-bottom: 1px solid var(--c-line);
  position: sticky;
  top: 0;
  background: var(--c-glass);
  backdrop-filter: blur(14px);
  z-index: 1;
}
.drawer__close {
  width: 2.5rem; height: 2.5rem;
  border: 1px solid var(--c-line);
  border-radius: 999px;
  display: grid; place-items: center;
  transition: background var(--d-fast);
}
.drawer__close:hover { background: var(--c-ink); color: var(--c-paper); }
.drawer__body { padding: var(--s-4); display: grid; gap: var(--s-4); }
.drawer__cover {
  aspect-ratio: 16/10;
  overflow: hidden;
  position: relative;
}
.drawer__cover img { width: 100%; height: 100%; object-fit: cover; }
.drawer__title {
  font-family: var(--ff-display);
  font-style: normal;
  font-weight: 500;
  font-size: clamp(2rem, 4.5vw, 3.5rem);
  line-height: 1;
  letter-spacing: -0.025em;
  margin-block: var(--s-2) var(--s-3);
}
.drawer__meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(10rem, 1fr));
  gap: var(--s-3);
  border-block: 1px solid var(--c-line);
  padding-block: var(--s-3);
}
.drawer__meta dt {
  font-family: var(--ff-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-graph);
  margin-bottom: 0.25rem;
}
.drawer__meta dd {
  font-size: 0.95rem;
  color: var(--c-ink);
}
.drawer__desc {
  font-size: 1.05rem;
  color: var(--c-graph);
  line-height: 1.6;
  max-width: 64ch;
}
.drawer__gallery {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--gutter);
}
.drawer__gallery img { width: 100%; aspect-ratio: 4/3; object-fit: cover; }
@media (max-width: 600px) { .drawer__gallery { grid-template-columns: 1fr; } }

/* ----------- Contact form ----------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s-5);
}
@media (min-width: 900px) {
  .contact-grid { grid-template-columns: 0.85fr 1.15fr; gap: var(--s-7); }
}
.info {
  display: grid; gap: var(--s-3);
  align-content: start;
}
.info dt {
  font-family: var(--ff-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-graph);
}
.info dd {
  font-family: var(--ff-display);
  font-style: normal;
  font-size: clamp(1.25rem, 1.8vw, 1.6rem);
  letter-spacing: -0.015em;
  line-height: 1.2;
}
.info dd a { border-bottom: 1px solid var(--c-line); }
.info dd a:hover { border-color: var(--c-ink); color: var(--c-bronze-2); }

.form {
  display: grid;
  gap: var(--s-3);
}
.field {
  display: grid;
  gap: 0.5rem;
}
.field label {
  font-family: var(--ff-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-graph);
}
.field input, .field textarea, .field select {
  width: 100%;
  border: 0;
  border-bottom: 1px solid var(--c-line);
  background: transparent;
  padding: 0.85rem 0;
  font-size: 1.05rem;
  color: var(--c-ink);
  transition: border-color var(--d-fast);
  font-family: var(--ff-body);
  border-radius: 0;
}
.field input:focus, .field textarea:focus, .field select:focus {
  border-color: var(--c-ink);
  outline: none;
}
.field textarea { resize: vertical; min-height: 7rem; }
.field-row {
  display: grid;
  gap: var(--s-3);
  grid-template-columns: 1fr;
}
@media (min-width: 720px) { .field-row { grid-template-columns: 1fr 1fr; } }
.honey {
  position: absolute !important;
  left: -10000px !important;
  width: 1px; height: 1px;
  overflow: hidden;
}
.consent {
  display: flex;
  align-items: flex-start;
  gap: 0.625rem;
  font-size: 0.85rem;
  color: var(--c-graph);
}
.consent input[type=checkbox] { margin-top: 0.25rem; accent-color: var(--c-ink); }

.form__status {
  font-family: var(--ff-mono);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  padding: 0.85rem 1rem;
  border-radius: var(--radius);
  display: none;
}
.form__status.is-ok { display: block; background: rgba(38, 81, 166,0.16); color: var(--c-bronze-2); }
.form__status.is-err { display: block; background: rgba(176,67,47,0.14); color: var(--c-rust); }

/* ----------- Footer ----------- */
.site-footer {
  background: var(--c-navy);
  color: var(--c-paper);
  padding-block: var(--s-6) var(--s-3);
  position: relative;
  overflow: hidden;
}
.site-footer::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: var(--c-line-inv);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s-5);
  margin-bottom: var(--s-5);
}
@media (min-width: 720px) { .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; } }
.footer-col h4 {
  font-family: var(--ff-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-weight: 500;
  color: rgba(242,242,242,0.6);
  margin-bottom: var(--s-2);
}
.footer-col a { display: block; padding: 0.25rem 0; color: rgba(242,242,242,0.85); transition: color var(--d-fast); }
.footer-col a:hover { color: var(--c-bronze); }
.footer-headline {
  font-family: var(--ff-display);
  font-style: normal;
  font-weight: 500;
  font-size: clamp(2rem, 4vw, 3.5rem);
  letter-spacing: -0.025em;
  line-height: 1;
  max-width: 16ch;
}
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--s-2);
  padding-top: var(--s-3);
  border-top: 1px solid var(--c-line-inv);
  font-family: var(--ff-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(242,242,242,0.55);
}

/* ----------- Animations utilities ----------- */
.reveal { opacity: 0; transform: translateY(28px); }
.reveal.is-visible {
  opacity: 1;
  transform: none;
  transition: opacity var(--d-slow) var(--ease-out), transform var(--d-slow) var(--ease-out);
}
.split-line { display: block; overflow: hidden; padding-block: 0.05em; }
.split-line > span { display: block; }

/* Lenis smooth scroll resets */
html.lenis,html.lenis body { height: auto; }
.lenis.lenis-smooth { scroll-behavior: auto !important; }
.lenis.lenis-smooth [data-lenis-prevent] { overscroll-behavior: contain; }
.lenis.lenis-stopped { overflow: hidden; }
.lenis.lenis-smooth iframe { pointer-events: none; }

/* ----------- Page-specific helpers ----------- */
.page-hero {
  padding: calc(var(--hdr-h) + var(--s-6)) 0 var(--s-5);
  border-bottom: 1px solid var(--c-line);
}
.page-hero__title {
  font-family: var(--ff-display);
  font-style: normal;
  font-weight: 500;
  font-size: var(--fs-h1);
  line-height: 0.95;
  letter-spacing: -0.025em;
  max-width: 18ch;
  text-wrap: balance;
}
.page-hero__lead {
  margin-top: var(--s-3);
  max-width: 60ch;
}
.page-hero .t-eyebrow { margin-bottom: var(--s-2); }

/* Team cards */
.team {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s-3);
}
@media (min-width: 720px) { .team { grid-template-columns: repeat(3, 1fr); } }
.team__card {
  border-top: 1px solid var(--c-line);
  padding-top: var(--s-3);
  display: grid;
  gap: var(--s-2);
}
.team__role {
  font-family: var(--ff-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-bronze-2);
}
.team__name {
  font-family: var(--ff-display);
  font-style: normal;
  font-size: clamp(1.5rem, 2.4vw, 2.25rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
}
.team__year { font-family: var(--ff-mono); font-size: 0.8rem; color: var(--c-graph); }

/* Map section */
.mapwrap {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--c-paper-2);
  border: 1px solid var(--c-line);
}
.mapwrap iframe {
  width: 100%; height: 100%;
  border: 0;
  filter: grayscale(0.7) contrast(1.05);
}

/* Countries list */
.countries {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-2) var(--s-3);
  font-family: var(--ff-display);
  font-style: normal;
  font-weight: 500;
  font-size: clamp(1.5rem, 3.2vw, 2.5rem);
  letter-spacing: -0.015em;
  line-height: 1.1;
}
.countries span { display: inline-flex; gap: 0.5rem; align-items: center; }
.countries span::after {
  content: "·";
  font-style: normal;
  color: var(--c-bronze);
}
.countries span:last-child::after { display: none; }

/* Ribbon for project category index */
.cat-index {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--c-line);
}
.cat-row {
  display: grid;
  grid-template-columns: 4rem 1fr auto;
  gap: var(--s-3);
  padding-block: var(--s-3);
  border-bottom: 1px solid var(--c-line);
  align-items: baseline;
  cursor: pointer;
  transition: padding-inline var(--d-base) var(--ease-out);
  position: relative;
  overflow: hidden;
}
.cat-row::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 0;
  background: var(--c-bronze);
  transition: width var(--d-base) var(--ease-out);
  opacity: 0.12;
}
.cat-row:hover { padding-inline: var(--s-3); }
.cat-row:hover::before { width: 100%; }
.cat-row__num {
  font-family: var(--ff-mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--c-graph);
}
.cat-row__name {
  font-family: var(--ff-display);
  font-style: normal;
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  letter-spacing: -0.02em;
  line-height: 1;
}
.cat-row__count {
  font-family: var(--ff-mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: var(--c-graph);
}

/* CTA banner */
.cta-banner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s-4);
  align-items: end;
}
@media (min-width: 900px) {
  .cta-banner { grid-template-columns: 1fr auto; gap: var(--s-6); }
}
.cta-banner h2 {
  font-size: clamp(2.25rem, 6vw, 5.5rem);
  font-style: normal;
  letter-spacing: -0.025em;
  line-height: 0.95;
  text-wrap: balance;
}

/* Skip link */
.skip {
  position: absolute;
  left: -10000px;
  top: 1rem;
  z-index: 200;
  background: var(--c-ink);
  color: var(--c-paper);
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
}
.skip:focus { left: 1rem; }

/* Loader */
.loader {
  position: fixed;
  inset: 0;
  background: var(--c-paper);
  z-index: 100;
  display: grid; place-items: center;
  pointer-events: none;
}
.loader.is-done { transform: translateY(-100%); transition: transform 0.9s var(--ease-inout); }
.loader__inner {
  display: grid; place-items: center;
  gap: 1rem;
}
.loader__svg {
  width: 5rem; height: 5rem;
  opacity: 0;
  transform: scale(0.85);
  animation: loadIn 0.85s var(--ease-out) 0.05s forwards;
}
.loader__txt {
  font-family: var(--ff-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-graph);
  opacity: 0;
  animation: loadIn 0.7s var(--ease-out) 0.35s forwards;
}
.loader__bar {
  margin-top: var(--s-2);
  width: 10rem; height: 1px;
  background: var(--c-line);
  overflow: hidden;
  position: relative;
}
.loader__bar::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--c-blue);
  transform-origin: left;
  animation: barFill 1.4s var(--ease-out) forwards;
}
@keyframes loadIn { to { opacity: 1; transform: scale(1); } }
@keyframes barFill { from { transform: scaleX(0); } to { transform: scaleX(1); } }

/* Institutional clients list (social proof) */
.clients {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 0.85rem 2rem;
  margin-top: var(--s-3);
  padding-top: var(--s-3);
  border-top: 1px solid var(--c-line);
}
.clients span {
  font-family: var(--ff-display);
  font-weight: 500;
  font-size: clamp(1.05rem, 1.5vw, 1.4rem);
  color: var(--c-ink-2);
  line-height: 1.25;
  letter-spacing: -0.01em;
  position: relative;
  padding-left: 1.1rem;
}
.clients span::before {
  content: "";
  position: absolute; left: 0; top: 0.55em;
  width: 0.5rem; height: 0.5rem;
  border: 1px solid var(--c-blue);
  border-radius: 999px;
  background: transparent;
}
.clients em {
  font-style: normal;
  font-family: var(--ff-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-blue);
  margin-left: 0.4rem;
  font-weight: 500;
}

/* ----------- Affiliazioni / trust signals ----------- */
.footer-affil {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.25rem 1.5rem;
  padding-block: var(--s-3);
  border-block: 1px solid var(--c-line-inv);
  margin-bottom: var(--s-3);
}
.footer-affil__label {
  font-family: var(--ff-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(242, 242, 242, 0.6);
}
.footer-affil__img {
  max-width: 12rem;
  height: auto;
  background: var(--c-paper);
  padding: 0.5rem 0.75rem;
  border-radius: 4px;
  display: block;
  filter: saturate(0.95);
}

.affil-block {
  display: grid;
  gap: var(--s-3);
  grid-template-columns: 1fr;
}
@media (min-width: 720px) { .affil-block { grid-template-columns: 1fr 1fr; align-items: center; } }
.affil-block__img {
  background: var(--c-paper-3);
  padding: clamp(1rem, 3vw, 2rem);
  border: 1px solid var(--c-line);
  border-radius: 6px;
  max-width: 32rem;
  width: 100%;
  height: auto;
}

/* Brand wordmark inside footer (replace the typographic giant footer-mark) */
.footer-logo {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding-block: var(--s-3);
  border-block: 1px solid var(--c-line-inv);
  margin: var(--s-3) 0;
}
.footer-logo__svg {
  width: 4rem; height: 4rem;
  flex-shrink: 0;
  color: var(--c-paper);
}
.footer-logo__svg img { width: 100%; height: 100%; filter: invert(1) brightness(1.4); }
.footer-logo__txt {
  font-family: var(--ff-mono);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-paper);
  line-height: 1.5;
}
.footer-logo__txt small {
  display: block;
  color: rgba(242, 242, 242, 0.6);
  font-size: 0.65rem;
  letter-spacing: 0.16em;
  margin-top: 2px;
}

/* ============================
   Print
   ============================ */
@media print {
  .site-header, .site-footer, .strip, .loader { display: none; }
  body { background: white; color: black; }
}