/* ========================================================================
   Components — Buttons / Header / Footer / Cards / Tables
   ======================================================================== */

/* --- Button ------------------------------------------------------------ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-8);
  padding: 12px 18px;
  font-size: var(--text-body);
  font-weight: var(--font-weight-medium);
  line-height: 1;
  border-radius: 4px;
  transition: background-color 200ms ease, color 200ms ease, border-color 200ms ease;
  white-space: nowrap;
  cursor: pointer;
  user-select: none;
}

.btn--primary {
  background: var(--color-navy-deep);
  color: var(--color-canvas-white);
  border: 1px solid var(--color-navy-deep);
}

.btn--primary:hover {
  background: var(--color-navy-mid);
  border-color: var(--color-navy-mid);
}

.btn--outlined {
  background: transparent;
  color: var(--color-graphite-text);
  border: 1px solid var(--color-outline-ash);
}

.btn--outlined:hover {
  border-color: var(--color-navy-deep);
  color: var(--color-navy-deep);
}

.btn--ghost {
  background: transparent;
  color: var(--color-steel-accent);
  padding: 12px 8px;
}

.btn--ghost:hover {
  color: var(--color-graphite-text);
}

.btn--on-dark {
  background: rgba(255, 255, 255, 0.92);
  color: var(--color-navy-deep);
  border: 1px solid rgba(255, 255, 255, 0.92);
}

.btn--on-dark:hover {
  background: var(--color-canvas-white);
  border-color: var(--color-canvas-white);
}

.btn--block {
  width: 100%;
}

.btn .arrow {
  display: inline-block;
  transition: transform 200ms ease;
}

.btn:hover .arrow {
  transform: translateX(3px);
}

/* --- Header ------------------------------------------------------------ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(8px);
  -webkit-backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--color-outline-ash);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: var(--spacing-24);
}

.site-header__brand {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-12);
  font-weight: var(--font-weight-medium);
  font-size: 15px;
  color: var(--color-graphite-text);
  letter-spacing: -0.01em;
}

.site-header__brand img {
  width: 28px;
  height: 28px;
  object-fit: contain;
}

.site-nav {
  display: none;
  align-items: center;
  gap: var(--spacing-24);
}

@media (min-width: 768px) {
  .site-nav {
    display: flex;
  }
}

.nav-link {
  display: inline-flex;
  align-items: center;
  font-size: 14px;
  font-weight: var(--font-weight-regular);
  color: var(--color-silver-text);
  padding: 8px 0;
  transition: color 160ms ease;
}

.nav-link:hover {
  color: var(--color-navy-deep);
}

.nav-link[aria-current="page"] {
  color: var(--color-navy-deep);
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-12);
}

.site-header__actions .btn--primary {
  display: none;
  padding: 10px 16px;
  font-size: 14px;
}

@media (min-width: 768px) {
  .site-header__actions .btn--primary {
    display: inline-flex;
  }
}

.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 4px;
  color: var(--color-graphite-text);
}

.nav-toggle:hover {
  background: var(--color-whisper-gray);
}

@media (min-width: 768px) {
  .nav-toggle {
    display: none;
  }
}

/* Mobile menu */
.mobile-menu {
  display: none;
  border-top: 1px solid var(--color-outline-ash);
  background: var(--color-canvas-white);
  padding: var(--spacing-24);
}

.mobile-menu[data-open="true"] {
  display: block;
}

.mobile-menu__nav {
  display: flex;
  flex-direction: column;
}

.mobile-menu__nav .nav-link {
  width: 100%;
  padding: var(--spacing-16) 0;
  font-size: 16px;
  border-bottom: 1px solid var(--color-outline-ash);
}

.mobile-menu__cta {
  margin-top: var(--spacing-24);
}

@media (min-width: 768px) {
  .mobile-menu,
  .mobile-menu[data-open="true"] {
    display: none;
  }
}

/* --- Footer ------------------------------------------------------------ */
.site-footer {
  background: var(--color-navy-deep);
  color: var(--color-canvas-white);
  padding-block: 80px var(--spacing-32);
}

.site-footer__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-48);
}

@media (min-width: 768px) {
  .site-footer__inner {
    grid-template-columns: 2fr 1fr 1fr;
  }
}

.site-footer__brand {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-12);
  font-weight: var(--font-weight-medium);
  font-size: var(--text-body);
  color: var(--color-canvas-white);
}

.site-footer__brand img {
  width: 32px;
  height: 32px;
  object-fit: contain;
  filter: brightness(1.4) saturate(1.1);
}

.site-footer__tagline {
  margin-top: var(--spacing-16);
  color: rgba(255, 255, 255, 0.65);
  max-width: 36ch;
  line-height: 1.6;
  font-size: var(--text-body-sm);
}

.site-footer__group-title {
  font-size: 12px;
  font-weight: var(--font-weight-medium);
  letter-spacing: 0.06em;
  color: rgba(255, 255, 255, 0.45);
  margin-bottom: var(--spacing-16);
  font-feature-settings: "tnum" 1;
  text-transform: uppercase;
}

.site-footer__list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-12);
}

.site-footer__list a {
  color: rgba(255, 255, 255, 0.85);
  font-size: var(--text-body);
  transition: color 200ms ease;
}

.site-footer__list a:hover {
  color: var(--color-navy-light);
}

.site-footer__bottom {
  margin-top: 80px;
  padding-top: var(--spacing-24);
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-8);
  color: rgba(255, 255, 255, 0.45);
  font-size: 12px;
  font-feature-settings: "tnum" 1;
  letter-spacing: 0.02em;
}

@media (min-width: 768px) {
  .site-footer__bottom {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

/* --- Indexed list ------------------------------------------------------ */
.index-list {
  border-top: 1px solid var(--color-outline-ash);
}

.index-list__item {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: var(--spacing-16);
  padding-block: var(--spacing-32);
  border-bottom: 1px solid var(--color-outline-ash);
}

@media (min-width: 768px) {
  .index-list__item {
    grid-template-columns: 80px 1fr 1.4fr;
    gap: var(--spacing-32);
    padding-block: var(--spacing-40);
  }
}

.index-list__index {
  font-size: 13px;
  font-weight: var(--font-weight-medium);
  color: var(--color-navy-mid);
  font-feature-settings: "tnum" 1;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
  padding-top: 6px;
}

.index-list__title {
  font-size: clamp(20px, 2vw, 24px);
  line-height: 1.25;
  letter-spacing: -0.015em;
  font-weight: var(--font-weight-medium);
  color: var(--color-graphite-text);
}

.index-list__desc {
  color: var(--color-slate-text);
  font-size: var(--text-body);
  line-height: 1.55;
  max-width: 52ch;
}

@media (max-width: 767px) {
  .index-list__desc {
    grid-column: 1 / -1;
    margin-top: var(--spacing-8);
  }
}

/* --- Spec list --------------------------------------------------------- */
.spec-list {
  border-top: 1px solid var(--color-outline-ash);
  border-bottom: 1px solid var(--color-outline-ash);
}

.spec-list__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding-block: var(--spacing-24);
  border-bottom: 1px solid var(--color-outline-ash);
}

.spec-list__row:last-child {
  border-bottom: 0;
}

@media (min-width: 768px) {
  .spec-list__row {
    grid-template-columns: 200px 1fr;
    gap: var(--spacing-32);
  }
}

.spec-list__label {
  font-size: 13px;
  font-weight: var(--font-weight-medium);
  letter-spacing: 0.02em;
  color: var(--color-steel-accent);
  font-feature-settings: "tnum" 1;
}

.spec-list__value {
  color: var(--color-graphite-text);
  font-size: var(--text-body);
  line-height: 1.55;
}

.spec-list__value a {
  color: var(--color-navy-deep);
  border-bottom: 1px solid var(--color-outline-ash);
  transition: border-color 200ms ease;
}

.spec-list__value a:hover {
  border-color: var(--color-navy-deep);
}

/* --- CTA section (used on home / works / about) ----------------------- */
.home-contact {
  position: relative;
  overflow: hidden;
  background: var(--color-navy-deep);
  color: var(--color-canvas-white);
  padding-block: 96px;
}

@media (min-width: 1024px) {
  .home-contact {
    padding-block: 140px;
  }
}

.home-contact__bg {
  position: absolute;
  inset: 0;
  opacity: 0.2;
  z-index: 0;
}

.home-contact__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: blur(2px);
}

.home-contact__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-48);
}

@media (min-width: 1024px) {
  .home-contact__inner {
    grid-template-columns: 200px 1fr;
    gap: var(--spacing-64);
  }
}

.home-contact__label {
  font-size: 13px;
  font-weight: var(--font-weight-medium);
  letter-spacing: 0.02em;
  color: rgba(255, 255, 255, 0.55);
  font-feature-settings: "tnum" 1;
}

.home-contact__title {
  margin-bottom: var(--spacing-24);
  color: var(--color-canvas-white);
}

.home-contact__lead {
  font-size: var(--text-subheading);
  line-height: 1.55;
  color: rgba(255, 255, 255, 0.7);
  max-width: 50ch;
  margin-bottom: var(--spacing-32);
}

.home-contact__email {
  font-size: clamp(28px, 3vw, 36px);
  letter-spacing: -0.02em;
  font-weight: var(--font-weight-medium);
  color: var(--color-canvas-white);
  border-bottom: 1px solid rgba(255, 255, 255, 0.5);
  padding-bottom: 4px;
  display: inline-block;
  transition: color 200ms ease, border-color 200ms ease;
}

.home-contact__email:hover {
  color: var(--color-navy-light);
  border-color: var(--color-navy-light);
}