/* X1/9 Australia Network — "blueprint" design tokens */
:root {
  --blu: #143A5E;        /* prussian blueprint */
  --blu-scuro: #0E2C49;  /* deeper panel */
  --linea: #DCEAF5;      /* white line work */
  --ciano: #7FD1F0;      /* cyan annotation */
  --matita: #FF7A5C;     /* red-pencil revision mark */
  --griglia: rgba(220, 234, 245, 0.07);
  --griglia-major: rgba(220, 234, 245, 0.13);
  --font-display: "Rajdhani", "Arial Narrow", sans-serif;
  --font-body: "Saira", "Helvetica Neue", sans-serif;
  --font-mono: "Share Tech Mono", "Courier New", monospace;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  font-weight: 300;
  background:
    linear-gradient(var(--griglia-major) 1px, transparent 1px),
    linear-gradient(90deg, var(--griglia-major) 1px, transparent 1px),
    linear-gradient(var(--griglia) 1px, transparent 1px),
    linear-gradient(90deg, var(--griglia) 1px, transparent 1px),
    var(--blu);
  background-size: 120px 120px, 120px 120px, 24px 24px, 24px 24px;
  color: var(--linea);
  line-height: 1.6;
}

a { color: inherit; }

:focus-visible {
  outline: 3px solid var(--ciano);
  outline-offset: 3px;
}

/* the drawing sheet frame */
.sheet {
  max-width: 88rem;
  margin: 1rem auto;
  border: 2px solid var(--linea);
  outline: 1px solid var(--linea);
  outline-offset: 4px;
  min-height: calc(100vh - 2rem);
}

h1, h2 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.05;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: #fff;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  color: var(--ciano);
  margin-bottom: 0.9rem;
}

/* ---------- sheet header ---------- */
.sheet-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  padding: 1rem clamp(1.25rem, 4vw, 3rem);
  border-bottom: 1px solid var(--linea);
}

.sh-name {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.3rem;
  letter-spacing: 0.1em;
  color: #fff;
}

.sh-doc {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  color: var(--ciano);
}

.sh-nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.sh-nav a { text-decoration: none; }
.sh-nav a:hover { color: var(--ciano); }

.sh-cta {
  border: 1px solid var(--linea);
  padding: 0.45rem 1.1rem;
}

.sh-cta:hover { background: var(--linea); color: var(--blu); }

/* ---------- hero ---------- */
.hero {
  display: grid;
  grid-template-columns: minmax(20rem, 36rem) minmax(16rem, 24rem);
  justify-content: center;
  align-items: center;
  gap: clamp(2rem, 5vw, 4rem);
  padding: clamp(3rem, 7vh, 5rem) clamp(1.25rem, 4vw, 3rem);
}

.hero h1 {
  font-size: clamp(2.5rem, 5.5vw, 4.1rem);
  margin-bottom: 1.25rem;
}

/* red-pencil revision cloud around "admin" */
.rev {
  color: var(--matita);
  position: relative;
  white-space: nowrap;
}

.rev::after {
  content: "";
  position: absolute;
  inset: -0.12em -0.18em;
  border: 2px solid var(--matita);
  border-radius: 50%;
  transform: rotate(-2deg);
}

.hero-sub { max-width: 32rem; margin-bottom: 1.75rem; color: var(--linea); }

.spec-strip {
  display: grid;
  grid-template-columns: repeat(4, auto);
  gap: 2rem;
  margin-top: 2.25rem;
  border-top: 1px solid var(--linea);
  padding-top: 0.9rem;
  max-width: 34rem;
}

.spec-strip dt {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ciano);
}

.spec-strip dd {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.9rem;
  color: #fff;
}

/* sectional drawing */
.hero-fig {
  border: 1px solid var(--linea);
  padding: 1.25rem 1rem 0.9rem;
  background: var(--blu-scuro);
}

.hero-fig svg { width: 100%; height: auto; display: block; }

.plate {
  fill: none;
  stroke: var(--linea);
  stroke-width: 1.5;
}

.plate-hot { stroke: var(--matita); stroke-width: 2; }

.callout {
  fill: none;
  stroke: var(--linea);
  stroke-width: 1;
}

.callout-hot { stroke: var(--matita); }

.callout-n {
  font-family: var(--font-mono);
  font-size: 11px;
  fill: var(--linea);
  text-anchor: middle;
}

.leader {
  stroke: var(--ciano);
  stroke-width: 1;
  stroke-dasharray: 3 3;
}

.axis {
  stroke: var(--ciano);
  stroke-width: 1;
  stroke-dasharray: 10 4 2 4; /* centreline */
}

.dim line { stroke: var(--ciano); stroke-width: 1; }

.dim text {
  font-family: var(--font-mono);
  font-size: 9px;
  fill: var(--ciano);
  letter-spacing: 0.14em;
}

.hero-fig figcaption {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: var(--ciano);
  margin-top: 0.75rem;
  text-align: center;
}

/* ---------- shared section head ---------- */
.sec-head {
  max-width: 46rem;
  margin: 0 auto 2.5rem;
  text-align: center;
}

.sec-head h2 { font-size: clamp(1.9rem, 4vw, 2.8rem); margin-bottom: 0.75rem; }

.sec-sub { color: var(--linea); opacity: 0.85; }

/* ---------- parts table ---------- */
.parts {
  padding: clamp(3rem, 7vh, 5rem) clamp(1.25rem, 4vw, 3rem);
  border-top: 1px solid var(--linea);
}

.parts-table {
  width: 100%;
  max-width: 62rem;
  margin: 0 auto;
  border-collapse: collapse;
  border: 1px solid var(--linea);
}

.parts-table th {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-align: left;
  color: var(--ciano);
  border: 1px solid var(--linea);
  padding: 0.55rem 0.9rem;
}

.parts-table td {
  border: 1px solid var(--linea);
  padding: 1rem 0.9rem;
  vertical-align: top;
  font-size: 0.95rem;
}

.parts-table tbody tr:hover { background: rgba(127, 209, 240, 0.08); }

.pt-no {
  font-family: var(--font-mono);
  color: var(--ciano);
  width: 3rem;
}

.pt-name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  width: 16rem;
  color: #fff;
}

/* ---------- work: survey photographs ---------- */
.work {
  padding: clamp(3rem, 7vh, 5rem) clamp(1.25rem, 4vw, 3rem);
  border-top: 1px solid var(--linea);
}

.work-grid {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 19rem));
  justify-content: center;
  gap: 2rem 1.75rem;
  max-width: 72rem;
  margin: 0 auto;
}

.work-card {
  background: #F4F1E8;   /* photo paper on the blue sheet */
  color: #24303c;
  padding: 0.55rem 0.55rem 0.8rem;
  box-shadow: 0 10px 24px rgba(5, 15, 28, 0.45);
  position: relative;
}

/* photo-corner tape */
.work-card::before {
  content: "";
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%) rotate(-1deg);
  width: 84px;
  height: 22px;
  background: rgba(220, 234, 245, 0.35);
  border-left: 1px dashed rgba(20, 58, 94, 0.4);
  border-right: 1px dashed rgba(20, 58, 94, 0.4);
}

.tilt-l { transform: rotate(-1.1deg); }
.tilt-r { transform: rotate(1.1deg); }

.work-card a { text-decoration: none; display: block; color: inherit; }

.work-card img {
  width: 100%;
  display: block;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  object-position: top;
  border: 1px solid #cfc9b8;
  margin-bottom: 0.6rem;
}

.wc-domain {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  padding: 0 0.25rem;
  color: #16324c;
}

.work-card a:hover .wc-domain { color: var(--matita); }

.wc-note {
  font-size: 0.8rem;
  color: #5b6472;
  padding: 0 0.25rem;
  line-height: 1.45;
}

/* ---------- contact ---------- */
.contact {
  padding: clamp(3rem, 7vh, 5rem) clamp(1.25rem, 4vw, 3rem);
  border-top: 1px solid var(--linea);
}

.contact-inner {
  display: grid;
  grid-template-columns: minmax(16rem, 26rem) minmax(18rem, 30rem);
  justify-content: center;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}

.contact-copy h2 { font-size: clamp(1.9rem, 4vw, 2.8rem); margin-bottom: 0.75rem; }
.contact-copy .sec-sub { text-align: left; }

.contact-form {
  border: 1px solid var(--linea);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.contact-form label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ciano);
  margin-top: 0.8rem;
}

.contact-form input,
.contact-form textarea {
  font-family: var(--font-body);
  font-size: 1rem;
  color: #fff;
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--linea);
  padding: 0.5rem 0.1rem;
}

.contact-form input::placeholder,
.contact-form textarea::placeholder { color: rgba(220, 234, 245, 0.45); }

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-bottom: 2px solid var(--ciano);
}

.contact-form textarea { resize: vertical; }

.contact-form .btn { margin-top: 1.25rem; align-self: flex-start; }

.form-status {
  font-size: 0.92rem;
  margin-top: 0.6rem;
  min-height: 1.3em;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.form-status.show { opacity: 1; }
.form-status.ok { color: #9fe8a9; }
.form-status.err { color: var(--matita); }

.hp {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* ---------- buttons ---------- */
.btn-row { display: flex; gap: 0.9rem; flex-wrap: wrap; }

.btn {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  text-decoration: none;
  padding: 0.7rem 1.5rem;
  border: 1px solid var(--linea);
  cursor: pointer;
}

.btn-solid { background: var(--linea); color: var(--blu); }
.btn-solid:hover { background: #fff; }

.btn-line { background: transparent; color: var(--linea); }
.btn-line:hover { border-color: var(--ciano); color: var(--ciano); }

/* ---------- title block footer ---------- */
.titlebox {
  display: grid;
  grid-template-columns: 2fr 2fr 1.6fr 1fr 0.5fr;
  border-top: 2px solid var(--linea);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.06em;
}

.tbx-cell {
  border-right: 1px solid var(--linea);
  padding: 0.6rem 0.9rem 0.7rem;
}

.tbx-cell:last-child { border-right: 0; }

.tbx-label {
  display: block;
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 0.6rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ciano);
  margin-bottom: 0.15rem;
}

.tbx-small {
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 0.68rem;
  color: rgba(220, 234, 245, 0.7);
}

/* ---------- responsive ---------- */
@media (max-width: 900px) {
  .hero { grid-template-columns: minmax(0, 36rem); }
  .hero-fig { max-width: 22rem; }
  .contact-inner { grid-template-columns: minmax(0, 30rem); }
  .spec-strip { grid-template-columns: repeat(2, auto); gap: 1.25rem 2rem; }
  .pt-name { width: auto; }
  .titlebox { grid-template-columns: 1fr 1fr; }
  .tbx-cell { border-top: 1px solid var(--linea); }
}

@media (max-width: 620px) {
  .sheet { margin: 0.4rem; outline-offset: 2px; }
  .parts-table thead { display: none; }
  .parts-table tr { display: block; border-bottom: 1px solid var(--linea); padding: 0.6rem 0.4rem; }
  .parts-table td { display: block; border: 0; padding: 0.15rem 0.3rem; }
  .sh-nav { gap: 1rem; font-size: 0.9rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}