/* ====================================================================
   CALSTAR ENGINEERING — design tokens
   ==================================================================== */
:root {
  /* color */
  --yard:        #20242A;
  --yard-2:      #2A2F37;
  --slab:        #DFDAD0;
  --slab-2:      #D2CCC0;
  --ink:         #1C1B19;
  --paper:       #ECE8E0;
  --steel:       #4F8FB0;
  --amber:       #E8A23A;
  --amber-ink:   #3A2A0E;

  --line-on-dark: rgba(236,232,224,0.14);
  --line-on-light: rgba(28,27,25,0.14);

  /* type */
  --font-display: "Big Shoulders", sans-serif;
  --font-body: "IBM Plex Sans", sans-serif;
  --font-mono: "IBM Plex Mono", monospace;

  /* layout */
  --wrap: 1180px;
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --section-pad: clamp(4rem, 9vw, 7rem);

  --ease: cubic-bezier(.22,.61,.36,1);
}

/* ====================================================================
   reset
   ==================================================================== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--slab);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, p, dl, figure { margin: 0; }
button { font: inherit; cursor: pointer; }
input, select, textarea { font: inherit; }

.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--amber); color: var(--amber-ink); padding: .6rem 1rem; z-index: 200;
}
.skip-link:focus { left: 0; }

:focus-visible {
  outline: 2px solid var(--steel);
  outline-offset: 3px;
}

.wrap {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* ====================================================================
   type scale
   ==================================================================== */
.eyebrow {
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--steel);
  margin-bottom: 1.1rem;
}
.eyebrow--light { color: var(--amber); }

.section__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2rem, 4vw, 3.1rem);
  line-height: 1.05;
  letter-spacing: -.01em;
  max-width: 18ch;
  color: var(--ink);
  margin-bottom: 1.25rem;
}
.section__title--light { color: var(--paper); }

.section__lede {
  font-size: clamp(1rem, 1.2vw, 1.15rem);
  max-width: 46ch;
  color: var(--ink);
  opacity: .78;
  margin-bottom: 2.75rem;
}
.section--yard .section__lede { color: var(--paper); opacity: .72; }

/* ====================================================================
   buttons
   ==================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  font-family: var(--font-mono);
  font-size: .85rem;
  font-weight: 500;
  letter-spacing: .04em;
  text-transform: uppercase;
  padding: .85rem 1.6rem;
  border: 1px solid transparent;
  border-radius: 2px;
  transition: transform .18s var(--ease), background-color .18s var(--ease), color .18s var(--ease), border-color .18s var(--ease);
}
.btn--amber {
  background: var(--amber);
  color: var(--amber-ink);
}
.btn--amber:hover { background: #f0ad4d; transform: translateY(-1px); }
.btn--ghost {
  background: transparent;
  border-color: currentColor;
  color: var(--paper);
}
.hero .btn--ghost { color: var(--paper); }
.btn--ghost:hover { background: rgba(236,232,224,.08); transform: translateY(-1px); }
.btn--dark { color: var(--ink); }
.btn--dark:hover { background: rgba(28,27,25,.06); }
.btn--block { width: 100%; padding: 1rem; }
.btn--nav { display: none; }
@media (min-width: 980px) { .btn--nav { display: inline-flex; } }

/* ====================================================================
   header / nav
   ==================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(32,36,42,.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line-on-dark);
}
.bar {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--gutter);
  height: 72px;
  display: flex;
  align-items: center;
  gap: 2rem;
}
.wordmark { display: flex; align-items: center; gap: .65rem; line-height: 1; margin-right: auto; }
.wordmark__mark { width: 26px; height: 26px; color: var(--amber); flex-shrink: 0; }
.wordmark__text { display: flex; flex-direction: column; }
.wordmark__main {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.55rem;
  letter-spacing: .01em;
  color: var(--paper);
}
.wordmark__sub {
  font-family: var(--font-mono);
  font-size: .58rem;
  letter-spacing: .22em;
  color: var(--amber);
  margin-top: .15rem;
}
.wordmark--footer .wordmark__main { color: var(--paper); }

.primary-nav { display: none; }
@media (min-width: 980px) {
  .primary-nav { display: block; }
  .primary-nav ul { display: flex; gap: 2.1rem; }
  .primary-nav a {
    font-family: var(--font-mono);
    font-size: .82rem;
    letter-spacing: .04em;
    text-transform: uppercase;
    color: var(--paper);
    opacity: .68;
    padding: .3rem 0;
    border-bottom: 1px solid transparent;
    transition: opacity .15s var(--ease), border-color .15s var(--ease);
  }
  .primary-nav a:hover { opacity: 1; }
  .primary-nav a.is-active { opacity: 1; border-color: var(--amber); color: var(--amber); }
}

.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 38px; height: 38px;
  background: none; border: none; padding: 0;
}
@media (min-width: 980px) { .nav-toggle { display: none; } }
.nav-toggle span { display: block; height: 2px; background: var(--paper); transition: transform .2s var(--ease), opacity .2s var(--ease); }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-nav {
  max-height: 0;
  overflow: hidden;
  background: var(--yard);
  border-bottom: 1px solid var(--line-on-dark);
  transition: max-height .28s var(--ease);
}
.mobile-nav.is-open { max-height: 360px; }
.mobile-nav ul { padding: .5rem var(--gutter) 1.5rem; display: flex; flex-direction: column; gap: 1rem; }
.mobile-nav a {
  font-family: var(--font-mono);
  font-size: .95rem;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--paper);
}
.mobile-nav .btn { margin-top: .5rem; width: max-content; }

/* ====================================================================
   hero
   ==================================================================== */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  background: var(--yard);
  overflow: hidden;
  isolation: isolate;
}
.hero__plan {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero__plan svg {
  width: 100%; height: 100%;
  opacity: .55;
}
.hero__plan::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(100deg, rgba(32,36,42,.97) 0%, rgba(32,36,42,.82) 38%, rgba(32,36,42,.55) 70%, rgba(32,36,42,.25) 100%);
}
.plan-contours path,
.plan-grid path,
.plan-marks path,
.plan-marks circle,
.plan-furniture path,
.plan-furniture line {
  stroke-dasharray: 1400;
  stroke-dashoffset: 1400;
  transition: stroke-dashoffset 1.6s var(--ease);
}
.plan-marks circle { stroke-dasharray: 60; stroke-dashoffset: 60; }
.is-drawn .plan-contours path,
.is-drawn .plan-grid path,
.is-drawn .plan-marks path,
.is-drawn .plan-marks circle,
.is-drawn .plan-furniture path,
.is-drawn .plan-furniture line {
  stroke-dashoffset: 0;
}

.readout {
  position: absolute;
  left: var(--gutter);
  bottom: 1.4rem;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .04em;
  color: var(--steel);
  opacity: 0;
  transition: opacity .25s var(--ease);
  z-index: 2;
  pointer-events: none;
}
.readout.is-live { opacity: .85; }

.hero__content {
  position: relative;
  z-index: 1;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 7rem var(--gutter) 5rem;
  width: 100%;
}
.hero__headline {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(3rem, 9vw, 6.4rem);
  line-height: .98;
  letter-spacing: -.01em;
  color: var(--paper);
  margin-bottom: 1.5rem;
  max-width: 16ch;
}
.hero__sub {
  font-size: clamp(1.05rem, 1.6vw, 1.3rem);
  color: var(--paper);
  opacity: .76;
  max-width: 38ch;
  margin-bottom: 2.4rem;
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 1rem; }

.scroll-cue {
  position: absolute;
  right: var(--gutter);
  bottom: 1.6rem;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .5rem;
  color: var(--paper);
  opacity: .55;
}
.scroll-cue span {
  width: 1px; height: 34px;
  background: currentColor;
  position: relative;
  overflow: hidden;
}
.scroll-cue span::after {
  content: "";
  position: absolute; left: 0; top: -100%;
  width: 100%; height: 100%;
  background: var(--amber);
  animation: cue 2.2s ease-in-out infinite;
}
@keyframes cue { 0% { top: -100%; } 60% { top: 100%; } 100% { top: 100%; } }
.scroll-cue small { font-family: var(--font-mono); font-size: .65rem; letter-spacing: .14em; text-transform: uppercase; }

/* ====================================================================
   sections (generic)
   ==================================================================== */
.section { padding-block: var(--section-pad); }
.section--slab { background: var(--slab); color: var(--ink); }
.section--yard { background: var(--yard); color: var(--paper); }

.wrap--split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: start;
}
@media (min-width: 900px) {
  .wrap--split { grid-template-columns: 1.1fr .9fr; gap: 4rem; align-items: center; }
}

/* ====================================================================
   scope / services
   ==================================================================== */
.scope-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}
@media (min-width: 860px) {
  .scope-grid { grid-template-columns: 1fr 1fr; }
}
.scope-panel {
  background: var(--slab-2);
  border: 1px solid var(--line-on-light);
  padding: 2.2rem;
  display: flex;
  flex-direction: column;
  transition: border-color .2s var(--ease), transform .2s var(--ease);
}
.scope-panel:hover { border-color: var(--steel); transform: translateY(-3px); }
.scope-panel__head { display: flex; align-items: baseline; gap: .8rem; margin-bottom: 1rem; }
.scope-panel__tag {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--steel);
  border: 1px solid var(--steel);
  padding: .2rem .5rem;
}
.scope-panel__head h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.7rem;
}
.scope-panel p { opacity: .82; margin-bottom: 1.5rem; }
.scope-panel__list {
  display: grid;
  gap: .55rem;
  margin-bottom: 1.75rem;
  font-size: .94rem;
}
.scope-panel__list li {
  padding-left: 1.1rem;
  position: relative;
}
.scope-panel__list li::before {
  content: "";
  position: absolute; left: 0; top: .55em;
  width: 6px; height: 1px;
  background: var(--amber);
}
.scope-panel__diagram { margin-top: auto; }

/* ====================================================================
   performance stats
   ==================================================================== */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2.5rem 1.5rem;
}
@media (min-width: 860px) {
  .stat-grid { grid-template-columns: repeat(4, 1fr); }
}
.stat { border-top: 1px solid var(--line-on-dark); padding-top: 1.4rem; }
.stat__value {
  display: block;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.4rem, 5vw, 3.4rem);
  color: var(--amber);
  line-height: 1;
  margin-bottom: .6rem;
}
.stat__value--text {
  font-size: clamp(1.4rem, 2.4vw, 1.8rem);
  letter-spacing: -.005em;
}
.stat__label {
  display: block;
  font-size: .9rem;
  color: var(--paper);
  opacity: .68;
  max-width: 20ch;
}

.credentials-footnote {
  font-family: var(--font-mono);
  font-size: .8rem;
  color: var(--paper);
  opacity: .5;
  margin-top: 2rem;
}

.ebb-banner {
  margin-top: 2.5rem;
  padding: 1.4rem 1.6rem;
  background: var(--yard-2);
  border: 1px solid var(--line-on-dark);
  border-left: 3px solid var(--amber);
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: .9rem 1.2rem;
}
.ebb-banner__tag {
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--amber);
  border: 1px solid var(--amber);
  padding: .2rem .5rem;
  flex-shrink: 0;
}
.ebb-banner p { color: var(--paper); opacity: .85; font-size: .94rem; max-width: 64ch; }
.ebb-banner strong { color: var(--paper); opacity: 1; }

/* ====================================================================
   projects
   ==================================================================== */
.project-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}
@media (min-width: 700px) { .project-grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1080px) { .project-grid { grid-template-columns: repeat(4, 1fr); } }

.project-card {
  background: var(--slab-2);
  border: 1px solid var(--line-on-light);
  display: flex;
  flex-direction: column;
  transition: transform .2s var(--ease), border-color .2s var(--ease);
}
.project-card:hover { transform: translateY(-4px); border-color: var(--steel); }
.project-card__plan { background: var(--yard); padding: 1rem; }
.project-card__photo {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  filter: saturate(.94) contrast(1.02);
  transition: transform .35s var(--ease);
}
.project-card:hover .project-card__photo { transform: scale(1.035); }
.project-card { overflow: hidden; }
.project-card__body { padding: 1.4rem 1.4rem 1.6rem; }
.project-card__tag {
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--steel);
}
.project-card__body h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  margin: .5rem 0 .6rem;
  line-height: 1.15;
}
.project-card__body p { font-size: .88rem; opacity: .76; }

.work-more { margin-top: 2.5rem; text-align: center; }

/* ====================================================================
   company
   ==================================================================== */
.company-copy p { opacity: .82; margin-bottom: 1.2rem; max-width: 56ch; }
.cert-list {
  display: grid;
  gap: .7rem;
  margin-top: 1.6rem;
  font-family: var(--font-mono);
  font-size: .85rem;
  letter-spacing: .01em;
}
.cert-list li { padding-left: 1.2rem; position: relative; opacity: .85; }
.cert-list li::before { content: "—"; position: absolute; left: 0; color: var(--amber); }
.company-figure { display: flex; justify-content: center; }
.company-figure svg { width: min(100%, 320px); }

/* ====================================================================
   contact
   ==================================================================== */
.contact-details {
  display: grid;
  gap: 1.1rem;
  margin-top: 2rem;
}
.contact-details div { display: flex; gap: 1rem; align-items: baseline; }
.contact-details dt {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--steel);
  width: 4.5rem;
  flex-shrink: 0;
}
.contact-details dd a { border-bottom: 1px solid var(--line-on-light); transition: border-color .15s var(--ease), color .15s var(--ease); }
.contact-details dd a:hover { color: var(--steel); border-color: var(--steel); }

.bid-form {
  background: var(--slab-2);
  border: 1px solid var(--line-on-light);
  padding: 2rem;
  display: grid;
  gap: 1.2rem;
}
.field { display: grid; gap: .4rem; }
.field--row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.field label {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  opacity: .7;
}
.field input, .field select, .field textarea {
  background: var(--slab);
  border: 1px solid var(--line-on-light);
  padding: .75rem .85rem;
  color: var(--ink);
  border-radius: 1px;
  transition: border-color .15s var(--ease);
  resize: vertical;
}
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--steel); }
.field input[type="file"] {
  padding: .55rem .6rem;
  font-size: .85rem;
  font-family: var(--font-mono);
}
.field input[type="file"]::file-selector-button {
  font-family: var(--font-mono);
  font-size: .78rem;
  text-transform: uppercase;
  letter-spacing: .04em;
  background: var(--ink);
  color: var(--paper);
  border: none;
  padding: .5rem .8rem;
  margin-right: .7rem;
  cursor: pointer;
  transition: background-color .15s var(--ease);
}
.field input[type="file"]::file-selector-button:hover { background: var(--steel); }
.form-status {
  font-family: var(--font-mono);
  font-size: .82rem;
  min-height: 1.2em;
  color: var(--steel);
}
.form-status.is-error { color: #b5482f; }

/* ====================================================================
   footer
   ==================================================================== */
.site-footer { background: var(--yard); color: var(--paper); padding: 3.5rem 0 2rem; }
.footer-grid {
  display: grid;
  gap: 2.5rem;
  grid-template-columns: 1fr;
}
@media (min-width: 760px) {
  .footer-grid { grid-template-columns: 1fr 1fr 1fr; align-items: start; }
}
.footer-grid p { opacity: .6; margin-top: .8rem; font-size: .9rem; }
.footer-grid nav ul { display: flex; flex-direction: column; gap: .6rem; }
.footer-grid nav a {
  font-family: var(--font-mono);
  font-size: .82rem;
  letter-spacing: .04em;
  text-transform: uppercase;
  opacity: .68;
}
.footer-grid nav a:hover { opacity: 1; }
.footer-legal { font-family: var(--font-mono); font-size: .75rem; opacity: .5; align-self: end; }

/* ====================================================================
   scroll reveal
   ==================================================================== */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s var(--ease), transform .6s var(--ease); }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .plan-contours path, .plan-grid path, .plan-marks path, .plan-marks circle, .plan-furniture path, .plan-furniture line {
    stroke-dasharray: none; stroke-dashoffset: 0; transition: none;
  }
  .scroll-cue span::after { animation: none; }
}

@media (max-width: 540px) {
  .field--row { grid-template-columns: 1fr; }
  .hero { min-height: 100vh; }
}

/* ====================================================================
   gallery page
   ==================================================================== */
.gallery-hero {
  background: var(--yard);
  padding: 8.5rem 0 3.5rem;
}
.gallery-hero .section__lede { color: var(--paper); opacity: .72; max-width: 60ch; }

.gallery-section { padding-top: var(--section-pad); }

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: .6rem;
}
@media (min-width: 600px) { .gallery-grid { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 900px) { .gallery-grid { grid-template-columns: repeat(4, 1fr); } }
@media (min-width: 1280px) { .gallery-grid { grid-template-columns: repeat(6, 1fr); } }

.gallery-item {
  position: relative;
  display: block;
  padding: 0;
  border: none;
  background: var(--yard);
  overflow: hidden;
  aspect-ratio: 3 / 4;
}
.gallery-item img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .35s var(--ease), filter .35s var(--ease);
}
.gallery-item:hover img { transform: scale(1.06); }
.gallery-item__frame {
  position: absolute;
  left: 0; bottom: 0;
  font-family: var(--font-mono);
  font-size: .65rem;
  letter-spacing: .06em;
  color: var(--paper);
  background: rgba(32,36,42,.72);
  padding: .25rem .45rem;
  opacity: 0;
  transition: opacity .2s var(--ease);
}
.gallery-item:hover .gallery-item__frame,
.gallery-item:focus-visible .gallery-item__frame { opacity: 1; }

/* lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 300;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(15,17,20,.94);
}
.lightbox.is-open { display: flex; }
.lightbox__figure { display: flex; flex-direction: column; align-items: center; gap: .9rem; max-width: 90vw; max-height: 88vh; }
.lightbox__img { max-width: 90vw; max-height: 78vh; object-fit: contain; box-shadow: 0 20px 60px rgba(0,0,0,.5); }
.lightbox__counter { font-family: var(--font-mono); font-size: .8rem; letter-spacing: .06em; color: var(--paper); opacity: .65; }
.lightbox__close {
  position: absolute; top: 1.2rem; right: 1.4rem;
  background: none; border: none; color: var(--paper);
  font-size: 2rem; line-height: 1; opacity: .75; padding: .4rem;
}
.lightbox__close:hover { opacity: 1; }
.lightbox__nav {
  position: absolute; top: 50%; transform: translateY(-50%);
  background: rgba(236,232,224,.08); border: 1px solid var(--line-on-dark); color: var(--paper);
  font-size: 1.8rem; line-height: 1; width: 48px; height: 48px;
  display: flex; align-items: center; justify-content: center;
  transition: background-color .15s var(--ease);
}
.lightbox__nav:hover { background: rgba(236,232,224,.16); }
.lightbox__nav--prev { left: 1rem; }
.lightbox__nav--next { right: 1rem; }
@media (max-width: 640px) {
  .lightbox__nav { width: 40px; height: 40px; font-size: 1.4rem; }
  .lightbox__nav--prev { left: .4rem; }
  .lightbox__nav--next { right: .4rem; }
}