/* style.css — Keystone Steel Buildings */

.container {
  width: 100%;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-6);
}
.container--narrow {
  max-width: var(--content-default);
}

section {
  padding-block: clamp(var(--space-16), 8vw, var(--space-24));
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
}
.eyebrow::before {
  content: '';
  width: 18px;
  height: 2px;
  background: var(--color-primary);
  display: inline-block;
}

h1,
h2,
h3 {
  font-family: var(--font-display);
}

.section-title {
  font-size: var(--text-xl);
  font-weight: 650;
  letter-spacing: -0.01em;
  margin-top: var(--space-3);
  max-width: 30ch;
}

.section-lede {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 56ch;
  margin-top: var(--space-4);
}

.section-head {
  margin-bottom: var(--space-12);
}
.section-head.center {
  text-align: center;
  margin-inline: auto;
}
.section-head.center .section-lede {
  margin-inline: auto;
}

/* ===== Header ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: oklch(from var(--color-bg) l c h / 0.86);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-divider);
  transition:
    transform 0.3s cubic-bezier(0.16, 1, 0.3, 1),
    box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
.header--hidden {
  transform: translateY(-100%);
}
.header--scrolled {
  box-shadow: var(--shadow-sm);
}
.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-block: var(--space-3);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-text);
  text-decoration: none;
}
.brand__mark {
  width: 34px;
  height: 34px;
  color: var(--color-primary);
  flex-shrink: 0;
}
.brand__name {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.1;
}
.brand__name span {
  display: block;
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}
.nav__links {
  display: flex;
  gap: var(--space-6);
}
.nav__links a {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: none;
}
.nav__links a:hover {
  color: var(--color-text);
}

.header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.theme-toggle {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}
.theme-toggle:hover {
  color: var(--color-text);
  border-color: var(--color-text-faint);
}

.phone-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  text-decoration: none;
  border: 1px solid var(--color-border);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
}
.phone-chip svg {
  width: 15px;
  height: 15px;
  color: var(--color-primary);
}
.phone-chip:hover {
  border-color: var(--color-primary);
}

.menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  color: var(--color-text);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-6);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.01em;
  text-decoration: none;
  white-space: nowrap;
  border: 1px solid transparent;
}
.btn--primary {
  background: var(--color-primary);
  color: #fff9f4;
  box-shadow: var(--shadow-sm);
}
.btn--primary:hover {
  background: var(--color-primary-hover);
}
.btn--primary:active {
  background: var(--color-primary-active);
}
.btn--ghost {
  background: transparent;
  border-color: var(--color-border);
  color: var(--color-text);
}
.btn--ghost:hover {
  border-color: var(--color-text-faint);
  background: var(--color-surface-offset);
}
.btn--on-dark {
  border-color: oklch(1 0 0 / 0.25);
  color: #fff;
}
.btn--on-dark:hover {
  background: oklch(1 0 0 / 0.1);
  border-color: oklch(1 0 0 / 0.5);
}
.btn--block {
  width: 100%;
}
.btn svg {
  width: 16px;
  height: 16px;
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  padding-block: var(--space-24) var(--space-16);
  color: #fff;
  overflow: hidden;
}
.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero__bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    oklch(0.15 0.02 60 / 0.75) 0%,
    oklch(0.15 0.02 60 / 0.35) 45%,
    oklch(0.12 0.02 60 / 0.85) 100%
  );
}
.hero__content {
  position: relative;
  z-index: 1;
  max-width: 760px;
}
.hero .eyebrow {
  color: #f2b487;
}
.hero .eyebrow::before {
  background: #f2b487;
}
.hero h1 {
  font-size: var(--text-hero);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-top: var(--space-5);
}
.hero h1 em {
  font-style: normal;
  color: #f2b487;
}
.hero p {
  font-size: var(--text-lg);
  font-family: var(--font-body);
  color: oklch(1 0 0 / 0.86);
  margin-top: var(--space-6);
  max-width: 52ch;
}
.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-top: var(--space-10);
}
.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-8);
  margin-top: var(--space-16);
  padding-top: var(--space-8);
  border-top: 1px solid oklch(1 0 0 / 0.18);
}
.hero__meta-item {
  min-width: 140px;
}
.hero__meta-item strong {
  display: block;
  font-family: var(--font-display);
  font-size: var(--text-lg);
  color: #fff;
}
.hero__meta-item span {
  font-size: var(--text-xs);
  color: oklch(1 0 0 / 0.7);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ===== Trust bar ===== */
.trust-bar {
  padding-block: var(--space-8);
  background: var(--color-surface-offset);
  border-bottom: 1px solid var(--color-divider);
}
.trust-bar .container {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-6);
}
.trust-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
}
.trust-item svg {
  width: 20px;
  height: 20px;
  color: var(--color-primary);
  flex-shrink: 0;
}

/* ===== Categories ===== */
.cat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}
.cat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.cat-card__img {
  aspect-ratio: 4 / 3;
  overflow: hidden;
}
.cat-card__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}
.cat-card:hover .cat-card__img img {
  transform: scale(1.05);
}
.cat-card__body {
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  flex: 1;
}
.cat-card__body h3 {
  font-size: var(--text-lg);
  font-weight: 650;
}
.cat-card__body p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  flex: 1;
}
.cat-card__link {
  margin-top: var(--space-3);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-primary);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
}
.cat-card__link svg {
  width: 14px;
  height: 14px;
  transition: transform var(--transition-interactive);
}
.cat-card__link:hover svg {
  transform: translateX(3px);
}

/* ===== How it works ===== */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-8);
  counter-reset: step;
}
.step {
  position: relative;
  padding-top: var(--space-8);
}
.step::before {
  counter-increment: step;
  content: '0' counter(step);
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-primary-highlight);
  display: block;
  margin-bottom: var(--space-2);
}
.step h3 {
  font-size: var(--text-base);
  font-weight: 700;
  margin-bottom: var(--space-2);
}
.step p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* ===== Why us ===== */
.why-us {
  background: var(--color-ink);
  color: var(--color-text-inverse);
}
.why-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: start;
}
.why-us .eyebrow {
  color: #f2b487;
}
.why-us .eyebrow::before {
  background: #f2b487;
}
.why-us .section-title {
  color: #fff;
}
.why-us .section-lede {
  color: oklch(1 0 0 / 0.65);
}
.why-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}
.why-item {
  display: flex;
  gap: var(--space-4);
  padding-bottom: var(--space-6);
  border-bottom: 1px solid oklch(1 0 0 / 0.12);
}
.why-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}
.why-item__icon {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  border-radius: var(--radius-md);
  background: oklch(1 0 0 / 0.08);
  display: grid;
  place-items: center;
  color: #f2b487;
}
.why-item__icon svg {
  width: 20px;
  height: 20px;
}
.why-item h3 {
  font-size: var(--text-base);
  font-weight: 700;
  color: #fff;
  margin-bottom: var(--space-1);
}
.why-item p {
  font-size: var(--text-sm);
  color: oklch(1 0 0 / 0.62);
}

/* ===== Service area ===== */
.area-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
  margin-top: var(--space-8);
}
.area-list li {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}
.area-list li svg {
  width: 15px;
  height: 15px;
  color: var(--color-primary);
  flex-shrink: 0;
}

/* ===== Quote form ===== */
.quote {
  background: var(--color-surface-offset);
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
}
.quote__wrap {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: var(--space-16);
  align-items: start;
}
.quote__side .section-title {
  color: var(--color-text);
}
.quote__points {
  margin-top: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.quote__point {
  display: flex;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.quote__point svg {
  width: 18px;
  height: 18px;
  color: var(--color-primary);
  flex-shrink: 0;
  margin-top: 2px;
}
.quote__call {
  margin-top: var(--space-10);
  padding: var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}
.quote__call p {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-2);
}
.quote__call a {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  color: var(--color-text);
  text-decoration: none;
}

.form-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-md);
}
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-5);
}
.field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.field--full {
  grid-column: 1 / -1;
}
.field label {
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-muted);
}
.field input,
.field select,
.field textarea {
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface-2);
  font-size: var(--text-sm);
  color: var(--color-text);
}
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-highlight);
}
.field textarea {
  resize: vertical;
  min-height: 90px;
}
.form-card .btn {
  margin-top: var(--space-6);
}
.form-note {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  margin-top: var(--space-3);
  text-align: center;
}
.form-success {
  display: none;
  text-align: center;
  padding: var(--space-8);
}
.form-success.is-visible {
  display: block;
}
.form-success svg {
  width: 40px;
  height: 40px;
  color: var(--color-success);
  margin-inline: auto;
  margin-bottom: var(--space-4);
}
.form-success h3 {
  font-size: var(--text-lg);
  margin-bottom: var(--space-2);
}
.form-success p {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  margin-inline: auto;
}

/* ===== FAQ ===== */
.faq-list {
  max-width: var(--content-default);
  margin-inline: auto;
  border-top: 1px solid var(--color-divider);
}
.faq-item {
  border-bottom: 1px solid var(--color-divider);
}
.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-6) 0;
  text-align: left;
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text);
}
.faq-q svg {
  width: 18px;
  height: 18px;
  color: var(--color-primary);
  flex-shrink: 0;
  transition: transform var(--transition-interactive);
}
.faq-item[data-open='true'] .faq-q svg {
  transform: rotate(45deg);
}
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
.faq-a p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  padding-bottom: var(--space-6);
  max-width: 68ch;
}

/* ===== CTA band ===== */
.cta-band {
  background: linear-gradient(120deg, var(--color-primary), var(--color-primary-hover));
  color: #fff9f4;
  text-align: center;
}
.cta-band h2 {
  font-size: var(--text-xl);
  font-weight: 700;
}
.cta-band p {
  margin: var(--space-4) auto 0;
  color: oklch(1 0 0 / 0.85);
  max-width: 48ch;
}
.cta-band .hero__actions {
  justify-content: center;
  margin-top: var(--space-8);
}

/* ===== Footer ===== */
.footer {
  background: var(--color-ink);
  color: oklch(1 0 0 / 0.6);
  padding-block: var(--space-16) var(--space-8);
}
.footer__top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: var(--space-12);
  padding-bottom: var(--space-12);
  border-bottom: 1px solid oklch(1 0 0 / 0.12);
}
.footer .brand__name {
  color: #fff;
}
.footer .brand__name span {
  color: oklch(1 0 0 / 0.55);
}
.footer p {
  font-size: var(--text-sm);
  margin-top: var(--space-4);
  max-width: 34ch;
}
.footer h4 {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: oklch(1 0 0 / 0.4);
  margin-bottom: var(--space-4);
}
.footer ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.footer a {
  color: inherit;
  text-decoration: none;
  font-size: var(--text-sm);
}
.footer a:hover {
  color: #fff;
}
.footer__bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
  padding-top: var(--space-8);
  font-size: var(--text-xs);
}

/* ===== Responsive ===== */
@media (max-width: 960px) {
  .cat-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .steps {
    grid-template-columns: repeat(2, 1fr);
  }
  .why-grid,
  .quote__wrap {
    grid-template-columns: 1fr;
    gap: var(--space-10);
  }
  .footer__top {
    grid-template-columns: 1fr 1fr;
  }
  .area-list {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 720px) {
  .nav__links {
    display: none;
  }
  .menu-toggle {
    display: flex;
  }
  .phone-chip span {
    display: none;
  }
  .header__actions {
    gap: var(--space-2);
  }
  .header__actions > .btn--primary {
    display: none;
  }
  .brand__name {
    font-size: var(--text-sm);
  }
  .hero {
    min-height: auto;
    padding-block: var(--space-20) var(--space-12);
  }
  .hero__meta {
    gap: var(--space-6);
  }
  .cat-grid {
    grid-template-columns: 1fr;
  }
  .steps {
    grid-template-columns: 1fr;
  }
  .form-grid {
    grid-template-columns: 1fr;
  }
  .field--full {
    grid-column: 1;
  }
  .footer__top {
    grid-template-columns: 1fr;
  }
  .area-list {
    grid-template-columns: 1fr;
  }
  .trust-bar .container {
    justify-content: flex-start;
  }
}

@media (max-width: 400px) {
  .brand__name {
    font-size: 13px;
  }
}