/* ===== Header & Nav ===== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) var(--spacing-lg);
  background: rgba(18, 20, 23, 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  z-index: 100;
  transition: background var(--transition-fast), border-color var(--transition-fast);
}

.site-header--scrolled {
  background: rgba(18, 20, 23, 0.96);
  border-bottom-color: var(--color-border-strong);
}

.site-header__logo {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.site-header__logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dim));
  color: #fff;
  font-size: 0.8rem;
  letter-spacing: 0;
}

.site-nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}

.site-nav__toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
}

.site-nav__link {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-dim);
}

.site-nav__link:hover { color: var(--color-text); }

.site-nav__link--cta {
  padding: 0.625rem 1.125rem;
  border-radius: var(--radius-md);
  background: var(--color-accent);
  color: #fff !important;
  transition: background var(--transition-fast), transform var(--transition-fast);
}

.site-nav__link--cta:hover {
  background: var(--color-accent-dim);
  transform: translateY(-1px);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.9rem 1.75rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: var(--font-size-base);
  transition: transform var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
  cursor: pointer;
  border: 1px solid transparent;
}

.btn--primary {
  background: var(--color-accent);
  color: #fff;
}
.btn--primary:hover {
  background: var(--color-accent-dim);
  color: #fff;
  transform: translateY(-2px);
}

.btn--ghost {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border-strong);
}
.btn--ghost:hover {
  border-color: var(--color-steel);
  color: var(--color-text);
  transform: translateY(-2px);
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: var(--spacing-3xl) var(--spacing-lg) var(--spacing-2xl);
  overflow: hidden;
  background:
    radial-gradient(1000px 500px at 85% 20%, rgba(255, 106, 31, 0.08), transparent 60%),
    radial-gradient(800px 400px at 10% 80%, rgba(200, 204, 209, 0.04), transparent 60%),
    var(--color-charcoal);
}

.hero__inner {
  position: relative;
  z-index: 2;
  max-width: var(--container-max);
  margin: 0 auto;
  width: 100%;
}

.hero__eyebrow {
  display: inline-block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-steel-dim);
  padding: 0.4rem 0.9rem;
  border: 1px solid var(--color-border-strong);
  border-radius: 999px;
  margin-bottom: var(--spacing-lg);
}

.hero__title {
  font-size: clamp(2.25rem, 6vw, var(--font-size-3xl));
  margin-bottom: var(--spacing-lg);
  max-width: 14ch;
}

.hero__title--accent {
  color: var(--color-accent);
}

.hero__lede {
  font-size: var(--font-size-lg);
  color: var(--color-text-dim);
  max-width: 580px;
  margin-bottom: var(--spacing-xl);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-2xl);
}

.hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xl);
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--color-border);
}

.hero__stats li { display: flex; flex-direction: column; }
.hero__stats strong {
  font-size: var(--font-size-xl);
  color: var(--color-text);
  font-weight: 700;
}
.hero__stats span {
  font-size: var(--font-size-sm);
  color: var(--color-steel-dim);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.hero__visual {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.hero__visual-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(
      90deg,
      rgba(18, 20, 23, 0.92) 0%,
      rgba(18, 20, 23, 0.7) 45%,
      rgba(18, 20, 23, 0.35) 100%
    ),
    url("../assets/images/hero.jpg");
  background-size: cover;
  background-position: center;
}

.hero__inner { position: relative; z-index: 1; }

/* ===== Services ===== */
.services { background: var(--color-charcoal-2); }

.services__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--spacing-lg);
}

.service-card {
  padding: var(--spacing-xl);
  background: var(--color-charcoal);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: transform var(--transition-med), border-color var(--transition-med);
}

.service-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-border-strong);
}

.service-card__icon {
  font-size: 2rem;
  color: var(--color-accent);
  margin-bottom: var(--spacing-md);
}

.service-card__title {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-sm);
}

.service-card__body {
  color: var(--color-text-dim);
  font-size: 0.95rem;
}

/* ===== Why Steel ===== */
.why__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--spacing-xl) var(--spacing-lg);
}

.why__item {
  padding-left: var(--spacing-md);
  border-left: 2px solid var(--color-accent);
}

.why__title {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-sm);
}

.why__item p {
  color: var(--color-text-dim);
}

/* ===== Work ===== */
.work { background: var(--color-charcoal-2); }

.work__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
}

.work__item {
  overflow: hidden;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-charcoal);
}

.work__image {
  aspect-ratio: 4 / 3;
  position: relative;
  transition: transform var(--transition-slow);
}

.work__item:hover .work__image { transform: scale(1.03); }

.work__image {
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}
.work__image--1 { background-image: url("../assets/images/work-1.jpg"); }
.work__image--2 { background-image: url("../assets/images/work-2.jpg"); }
.work__image--3 { background-image: url("../assets/images/work-3.jpg"); }
.work__image--4 { background-image: url("../assets/images/work-4.jpg"); }

.work__item figcaption {
  padding: var(--spacing-md) var(--spacing-lg);
  font-size: 0.95rem;
  color: var(--color-text-dim);
  border-top: 1px solid var(--color-border);
}

/* ===== Contact ===== */
.contact__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
  align-items: start;
}

.contact__lede {
  color: var(--color-text-dim);
  margin-bottom: var(--spacing-xl);
  max-width: 480px;
}

.contact__details {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.contact__details li {
  display: flex;
  flex-direction: column;
}

.contact__details strong {
  font-size: var(--font-size-sm);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-steel-dim);
  margin-bottom: 2px;
}

.contact__details a { color: var(--color-text); }
.contact__details a:hover { color: var(--color-accent); }

/* ===== Quote form ===== */
.quote-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  padding: var(--spacing-xl);
  background: var(--color-charcoal-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.quote-form__row { display: flex; flex-direction: column; }

.quote-form__label {
  font-size: var(--font-size-sm);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-steel-dim);
  margin-bottom: 0.4rem;
}

.quote-form__input {
  padding: 0.8rem 1rem;
  background: var(--color-charcoal);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font: inherit;
  transition: border-color var(--transition-fast), background var(--transition-fast);
}

.quote-form__input:focus {
  outline: none;
  border-color: var(--color-accent);
  background: var(--color-charcoal-3);
}

.quote-form__input--textarea { resize: vertical; min-height: 110px; }

.quote-form__input--invalid { border-color: #e5484d; }

.quote-form__submit { margin-top: var(--spacing-sm); }

.quote-form__status {
  font-size: var(--font-size-sm);
  color: var(--color-text-dim);
  min-height: 1.25rem;
}
.quote-form__status--ok { color: #51cf66; }
.quote-form__status--err { color: #ff8787; }

/* ===== Footer ===== */
.site-footer {
  padding: var(--spacing-xl) var(--spacing-lg);
  border-top: 1px solid var(--color-border);
  background: var(--color-charcoal);
}

.site-footer__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  align-items: center;
  text-align: center;
  color: var(--color-text-dim);
  font-size: var(--font-size-sm);
}

.site-footer__brand { color: var(--color-text); font-weight: 700; letter-spacing: -0.01em; }

/* ===== Reveal animation ===== */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.reveal--visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
}