/* ============================================================
   Structural Engineering detail page
   Content from Portfolio.pdf — discipline 01 deep-dive.
   Sections: Hero → Approach → What We Do → 6 Featured Projects
   → Final CTA. Project 04 uses fullbleed cinematic layout.
   ============================================================ */

/* ============================================================
   HERO — full-bleed cinematic, dark
   Same pattern as /services.html hero (.services-hero) but with
   placeholder content background until real photography lands.
   ============================================================ */
.discipline-hero {
  position: relative;
  min-block-size: clamp(560px, 80vh, 880px);
  background: var(--c-navy-deep);
  color: var(--c-bone);
  overflow: hidden;
  isolation: isolate;
  display: flex;
  align-items: flex-end;
  padding-block: clamp(120px, 12vw, 200px);
  padding-inline: clamp(24px, 5vw, 96px);
}

/* .discipline-hero__bg — background-image set inline per discipline page */
.discipline-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background-size: cover;
  background-position: center;
  background-color: var(--c-navy-deep);
}

.discipline-hero__overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(180deg,
    rgba(13, 46, 81, 0.55) 0%,
    rgba(13, 46, 81, 0.72) 60%,
    rgba(13, 46, 81, 0.85) 100%);
  pointer-events: none;
}

.discipline-hero__inner {
  position: relative;
  z-index: 2;
  max-width: 1200px;
  margin-inline: auto;
  width: 100%;
}

.discipline-hero__eyebrow {
  color: rgba(241, 242, 242, 0.7);
}

.discipline-hero__title {
  font-family: var(--ff-display);
  font-variation-settings: var(--fvar-display);
  font-size: clamp(40px, 5.5vw, 96px);
  font-weight: 600;
  line-height: 1.05;
  letter-spacing: -0.01em;
  color: var(--c-bone);
  margin-block: var(--sp-3) 0;
}

.discipline-hero__sub {
  font-family: var(--ff-sans);
  font-weight: 400;
  font-size: clamp(17px, 1.3vw, 20px);
  line-height: 1.55;
  color: rgba(241, 242, 242, 0.85);
  margin-block-start: clamp(20px, 2.5vw, 32px);
  max-inline-size: 60ch;
}

/* ============================================================
   APPROACH — bone, editorial centered paragraph
   Heading + 3-paragraph body
   ============================================================ */
.discipline-approach {
  background: var(--c-bone);
  padding-block: var(--section-py);
  padding-inline: clamp(24px, 5vw, 96px);
}

.discipline-approach__inner {
  max-width: 960px;
  margin-inline: auto;
}

.discipline-approach__inner .eyebrow {
  color: var(--c-text-meta);
}

.discipline-approach__title {
  font-family: var(--ff-display);
  font-variation-settings: var(--fvar-display);
  font-size: clamp(40px, 5vw, 80px);
  font-weight: 600;
  line-height: 1.05;
  letter-spacing: -0.01em;
  color: var(--c-text-strong);
  margin-block: var(--sp-3) 0;
}

.discipline-approach__body {
  font-family: var(--ff-sans);
  font-weight: 400;
  font-size: clamp(18px, 1.3vw, 21px);
  line-height: 1.6;
  color: rgba(18, 63, 109, 0.90);
  max-inline-size: 65ch;
  margin-block-start: clamp(28px, 3.5vw, 40px);
}

.discipline-approach__body p + p {
  margin-block-start: 1.2em;
}

.js .discipline-approach__inner .eyebrow,
.js .discipline-approach__body { opacity: 0; }
.js .discipline-approach__title[data-mask] .mask__inner { transform: translateY(100%); }

@media (prefers-reduced-motion: reduce) {
  .js .discipline-approach__inner .eyebrow,
  .js .discipline-approach__body { opacity: 1; }
  .js .discipline-approach__title[data-mask] .mask__inner { transform: none; }
}

/* ============================================================
   WHAT WE DO — bone, 3 numbered editorial blocks
   ============================================================ */
.discipline-services {
  background: var(--c-bone);
  padding-block: 0 var(--section-py);
  padding-inline: clamp(24px, 5vw, 96px);
}

.discipline-services__inner {
  max-width: 1200px;
  margin-inline: auto;
}

.discipline-services__header {
  max-width: 70ch;
  margin-block-end: clamp(56px, 6vw, 96px);
}

.discipline-services__header .eyebrow {
  color: var(--c-text-meta);
}

.discipline-services__title {
  font-family: var(--ff-display);
  font-variation-settings: var(--fvar-display);
  font-size: clamp(36px, 4.5vw, 72px);
  font-weight: 600;
  line-height: 1.05;
  letter-spacing: -0.01em;
  color: var(--c-text-strong);
  margin-block: var(--sp-3) 0;
}

.discipline-services__list {
  list-style: none;
  padding-inline-start: 0;
  margin: 0;
}

.discipline-sub-service {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(16px, 2vw, 32px);
  padding-block: clamp(40px, 5vw, 64px);
  border-block-start: 1px solid var(--c-line);
}

.discipline-sub-service:last-child {
  border-block-end: 1px solid var(--c-line);
}

@media (min-width: 768px) {
  .discipline-sub-service {
    grid-template-columns: 80px 1fr;
    column-gap: clamp(32px, 4vw, 64px);
  }
}

.discipline-sub-service__num {
  font-family: var(--ff-display);
  font-variation-settings: var(--fvar-display);
  font-size: clamp(40px, 4vw, 56px);
  font-weight: 500;
  color: var(--c-orange);
  line-height: 1;
  margin: 0;
}

.discipline-sub-service__title {
  font-family: var(--ff-display);
  font-variation-settings: var(--fvar-heading);
  font-size: clamp(28px, 3vw, 44px);
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--c-text-strong);
  margin: 0 0 clamp(12px, 1.5vw, 20px);
}

.discipline-sub-service__body {
  font-family: var(--ff-sans);
  font-weight: 400;
  font-size: clamp(16px, 1.1vw, 18px);
  line-height: 1.65;
  color: var(--c-text);
  margin: 0;
  max-inline-size: 60ch;
}

.discipline-sub-service__body + .discipline-sub-service__body,
.discipline-sub-service__body + .discipline-sub-service__list {
  margin-block-start: clamp(16px, 1.5vw, 24px);
}

/* Nested category list inside a sub-service block (Electrical
   sub-service 03). Hairline-separated single-column list, same
   editorial register as the services-equipment list. */
.discipline-sub-service__list {
  list-style: none;
  padding-inline-start: 0;
  margin: 0;
  max-inline-size: 60ch;
}

.discipline-sub-service__list-item {
  font-family: var(--ff-sans);
  font-weight: 500;
  font-size: clamp(16px, 1.1vw, 18px);
  line-height: 1.45;
  color: var(--c-text-strong);
  padding-block: clamp(12px, 1.3vw, 18px);
  border-block-end: 1px solid var(--c-line);
}

.discipline-sub-service__list-item:last-child {
  border-block-end: none;
}

.js .discipline-services__header .eyebrow { opacity: 0; }
.js .discipline-services__title[data-mask] .mask__inner { transform: translateY(100%); }
.js .discipline-sub-service { opacity: 0; transform: translateY(16px); }

@media (prefers-reduced-motion: reduce) {
  .js .discipline-services__header .eyebrow { opacity: 1; }
  .js .discipline-services__title[data-mask] .mask__inner { transform: none; }
  .js .discipline-sub-service { opacity: 1; transform: none; }
}

/* ============================================================
   FEATURED PROJECTS — 6 sections, alternating layouts
   Layouts: split-right (text LEFT, image RIGHT) /
            split-left  (image LEFT, text RIGHT) /
            fullbleed   (Project 04, cinematic dark)
   ============================================================ */
.discipline-project {
  padding-block: clamp(80px, 8vw, 160px);
  padding-inline: clamp(24px, 5vw, 96px);
  background: var(--c-bone);
  overflow: hidden;
}

.discipline-project--alt {
  background: var(--c-surface);
}

.discipline-project__inner {
  max-width: 1400px;
  margin-inline: auto;
  display: grid;
  gap: clamp(40px, 5vw, 96px);
  align-items: center;
}

@media (min-width: 1024px) {
  .discipline-project__inner {
    grid-template-columns: 1fr 1fr;
  }
  .discipline-project--split-right .discipline-project__text { order: 1; }
  .discipline-project--split-right .discipline-project__image-wrap { order: 2; }
  .discipline-project--split-left .discipline-project__image-wrap { order: 1; }
  .discipline-project--split-left .discipline-project__text { order: 2; }
}

.discipline-project__eyebrow {
  color: var(--c-text-meta);
}

.discipline-project__title {
  font-family: var(--ff-display);
  font-variation-settings: var(--fvar-display);
  font-size: clamp(32px, 4.2vw, 64px);
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--c-text-strong);
  margin-block: var(--sp-3) 0;
}

.discipline-project__body {
  font-family: var(--ff-sans);
  font-weight: 400;
  font-size: clamp(16px, 1.15vw, 18px);
  line-height: 1.65;
  color: var(--c-text);
  margin-block-start: clamp(24px, 3vw, 32px);
  max-inline-size: 55ch;
}

.discipline-project__body p + p,
.discipline-project__body ul {
  margin-block-start: 1em;
}

.discipline-project__body ul {
  list-style: none;
  padding-inline-start: 0;
}

.discipline-project__body li {
  padding-block: 4px;
  padding-inline-start: 1.4em;
  position: relative;
}

.discipline-project__body li::before {
  content: "•";
  color: var(--c-orange);
  position: absolute;
  inset-inline-start: 0;
  font-weight: 700;
}

.discipline-project__image-wrap {
  position: relative;
}

.discipline-project__gallery {
  position: relative;
  aspect-ratio: 4 / 5;
  overflow: hidden;
}

.discipline-project__image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  opacity: 0;
  transition: opacity 480ms cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: none;
}

.discipline-project__image.is-active {
  opacity: 1;
  pointer-events: auto;
}

.discipline-project__dots {
  display: flex;
  gap: 12px;
  justify-content: center;
  align-items: center;
  margin-block-start: clamp(16px, 2vw, 24px);
  padding: 0;
  list-style: none;
}

.discipline-project__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(13, 46, 81, 0.22);
  border: 1px solid transparent;
  padding: 0;
  cursor: pointer;
  transition: background 220ms ease, transform 220ms ease, border-color 220ms ease;
  appearance: none;
}

.discipline-project__dot:hover {
  background: rgba(13, 46, 81, 0.5);
}

.discipline-project__dot:focus-visible {
  outline: 2px solid var(--c-orange);
  outline-offset: 3px;
}

.discipline-project__dot.is-active {
  background: var(--c-orange);
  transform: scale(1.25);
}

.discipline-project__dot:disabled,
.discipline-project__dot[disabled] {
  cursor: default;
}

.discipline-project__nav {
  position: absolute;
  inset-block-start: 50%;
  z-index: 3;
  inline-size: 48px;
  block-size: 48px;
  border-radius: 50%;
  border: none;
  background: rgba(241, 242, 242, 0.92);
  color: var(--c-navy);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  padding: 0;
  appearance: none;
  box-shadow: 0 2px 14px rgba(13, 46, 81, 0.2);
  opacity: 0;
  pointer-events: none;
  transform: translateY(-50%) scale(0.95);
  transition: opacity 240ms ease, background 220ms ease, transform 240ms ease;
}

.discipline-project__gallery:hover .discipline-project__nav,
.discipline-project__nav:focus-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(-50%) scale(1);
}

.discipline-project__nav:hover {
  background: var(--c-bone);
  transform: translateY(-50%) scale(1.05);
}

.discipline-project__nav:focus-visible {
  outline: 2px solid var(--c-orange);
  outline-offset: 3px;
}

.discipline-project__nav--prev { inset-inline-start: 16px; }
.discipline-project__nav--next { inset-inline-end: 16px; }

.discipline-project__nav-icon {
  inline-size: 22px;
  block-size: 22px;
  display: block;
}

.discipline-project__nav--prev .discipline-project__nav-icon {
  transform: scaleX(-1);
}

[dir="rtl"] .discipline-project__nav--prev .discipline-project__nav-icon { transform: none; }
[dir="rtl"] .discipline-project__nav--next .discipline-project__nav-icon { transform: scaleX(-1); }

@media (hover: none) {
  .discipline-project__nav {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(-50%);
  }
  .discipline-project__nav:hover,
  .discipline-project__gallery:hover .discipline-project__nav {
    transform: translateY(-50%);
  }
}

@media (prefers-reduced-motion: reduce) {
  .discipline-project__nav { transition: opacity 0ms; }
}

.js .discipline-project__eyebrow,
.js .discipline-project__body { opacity: 0; }
.js .discipline-project__title[data-mask] .mask__inner { transform: translateY(100%); }
.js .discipline-project__gallery { clip-path: inset(100% 0 0 0); }

@media (prefers-reduced-motion: reduce) {
  .js .discipline-project__eyebrow,
  .js .discipline-project__body { opacity: 1; }
  .js .discipline-project__title[data-mask] .mask__inner { transform: none; }
  .js .discipline-project__gallery { clip-path: none; }
  .discipline-project__image { transition: none; }
}

/* ============================================================
   PROJECT 04 — fullbleed cinematic
   Dark background image, content card overlaid for legibility,
   tall section allowing all 7 paragraphs to render naturally.
   ============================================================ */
.discipline-project--fullbleed {
  position: relative;
  background: var(--c-navy-deep);
  color: var(--c-bone);
  padding-block: clamp(120px, 12vw, 200px);
  isolation: isolate;
}

/* background-image set inline per discipline page on the fullbleed project */
.discipline-project--fullbleed .discipline-project__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background-size: cover;
  background-position: center;
  filter: brightness(0.5);
}

.discipline-project--fullbleed .discipline-project__overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(180deg,
    rgba(13, 46, 81, 0.7) 0%,
    rgba(13, 46, 81, 0.85) 100%);
  pointer-events: none;
}

.discipline-project--fullbleed .discipline-project__inner {
  position: relative;
  z-index: 2;
  display: block;
  max-width: 1400px;
}

.discipline-project--fullbleed .discipline-project__fullbleed-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(40px, 6vw, 80px);
  align-items: start;
}

@media (min-width: 960px) {
  .discipline-project--fullbleed .discipline-project__fullbleed-grid {
    grid-template-columns: 1.1fr 1fr;
    gap: clamp(48px, 6vw, 96px);
    align-items: center;
  }
}

.discipline-project--fullbleed .discipline-project__content {
  max-width: 800px;
  margin-inline-start: 0;
}

.discipline-project--fullbleed .discipline-project__image-wrap {
  position: relative;
}

.discipline-project--fullbleed .discipline-project__gallery {
  aspect-ratio: 4 / 5;
  background: rgba(13, 46, 81, 0.4);
}

.discipline-project--fullbleed .discipline-project__dot {
  background: rgba(241, 242, 242, 0.3);
}

.discipline-project--fullbleed .discipline-project__dot:hover {
  background: rgba(241, 242, 242, 0.6);
}

.discipline-project--fullbleed .discipline-project__dot.is-active {
  background: var(--c-orange);
}

.discipline-project--fullbleed .discipline-project__nav {
  background: rgba(13, 46, 81, 0.72);
  color: var(--c-bone);
  border: 1px solid rgba(241, 242, 242, 0.25);
  box-shadow: 0 2px 14px rgba(0, 0, 0, 0.35);
}

.discipline-project--fullbleed .discipline-project__nav:hover {
  background: rgba(13, 46, 81, 0.92);
}

.discipline-project--fullbleed .discipline-project__eyebrow {
  color: rgba(241, 242, 242, 0.7);
}

.discipline-project--fullbleed .discipline-project__title {
  color: var(--c-bone);
  font-size: clamp(36px, 5vw, 80px);
}

.discipline-project--fullbleed .discipline-project__body {
  color: rgba(241, 242, 242, 0.88);
  max-inline-size: 65ch;
}

.discipline-project--fullbleed .discipline-project__body li::before {
  color: var(--c-orange);
}

/* ============================================================
   FINAL CTA — duplicated from existing pattern
   ============================================================ */
.final-cta {
  position: relative;
  background: var(--c-navy);
  color: var(--c-bone);
  padding-block: var(--section-py);
  padding-inline: clamp(24px, 5vw, 96px);
  overflow: hidden;
  isolation: isolate;
}

.final-cta__background {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  display: grid;
  place-items: center;
}

.final-cta__bg-orb {
  display: block;
  inline-size: clamp(400px, 60vw, 900px);
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(closest-side,
    rgba(247, 148, 29, 0.10) 0%,
    rgba(247, 148, 29, 0.04) 40%,
    transparent 75%);
  filter: blur(20px);
  will-change: transform;
}

.final-cta__inner {
  position: relative;
  z-index: 1;
  max-width: 1000px;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.final-cta__eyebrow {
  color: rgba(241, 242, 242, 0.7);
}

.final-cta__heading {
  font-family: var(--ff-display);
  font-variation-settings: var(--fvar-display);
  font-size: clamp(48px, 7vw, 112px);
  font-weight: 600;
  line-height: 1.0;
  letter-spacing: -0.02em;
  color: var(--c-bone);
  margin-block: var(--sp-3) 0;
}

.final-cta__sub {
  font-family: var(--ff-sans);
  font-weight: 400;
  font-size: clamp(17px, 1.3vw, 20px);
  line-height: 1.55;
  color: rgba(241, 242, 242, 0.85);
  margin-block-start: clamp(20px, 2.5vw, 32px);
  max-inline-size: 60ch;
}

.final-cta__btn {
  margin-block-start: clamp(32px, 4vw, 48px);
}

.js .final-cta__inner > * { opacity: 0; }
.js .final-cta__heading[data-mask] .mask__inner { transform: translateY(100%); }

@media (prefers-reduced-motion: reduce) {
  .js .final-cta__inner > * { opacity: 1; }
  .js .final-cta__heading[data-mask] .mask__inner { transform: none; }
}