/* ==========================================================================
   Spring Valley Consulting — layout
   Container, white header, hero showcase, sections, grids, navy footer.
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 2.5rem);
}

.container--narrow {
  max-width: var(--container-narrow);
}

.section {
  padding-block: var(--section-y);
  position: relative;
}

.section--tight {
  padding-block: calc(var(--section-y) * 0.62);
}

/* Pale tinted band. Replaces the former dark "ink" section. */
.section--surface {
  background: var(--sv-surface);
  border-block: 1px solid var(--sv-line);
}

/* Solid steel-blue band with white text. */
.section--blue {
  background: var(--sv-blue);
  color: var(--sv-on-blue);
}

.section--blue h2,
.section--blue h3,
.section--blue h4 {
  color: var(--sv-on-blue);
}

.section--blue .lede,
.section--blue p {
  color: var(--sv-on-blue-muted);
}

.section--line {
  border-top: 1px solid var(--sv-line);
}

.section__head {
  max-width: 720px;
  margin-bottom: var(--space-lg);
}

.section__head p {
  margin-top: var(--space-xs);
}

/* --------------------------------------------------------------- header -- */

.sv-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--sv-white);
  border-bottom: 1px solid var(--sv-line);
  transition: box-shadow 0.25s var(--ease);
}

.sv-header.is-stuck {
  box-shadow: 0 1px 12px rgba(26, 58, 92, 0.08);
}

.sv-header__inner {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  min-height: var(--header-h);
}

/* Logo */

.sv-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  flex: none;
  margin-right: auto;
}

.sv-logo__mark {
  width: 36px;
  height: 36px;
  flex: none;
}

.sv-logo__text {
  display: flex;
  flex-direction: column;
  line-height: 1;
}

.sv-logo__name {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.005em;
  color: var(--sv-navy);
}

.sv-logo__sub {
  font-size: 0.58rem;
  font-weight: 500;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--sv-blue);
  margin-top: 4px;
}

.sv-footer .sv-logo__name {
  color: var(--sv-white);
}

.sv-footer .sv-logo__sub {
  color: var(--sv-on-blue-muted);
}

/* Nav — plain text links, no pill */

.sv-nav {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.sv-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(1.1rem, 2.2vw, 2rem);
}

.sv-nav__link {
  position: relative;
  font-size: 0.94rem;
  font-weight: 500;
  padding-block: 0.35rem;
  color: var(--sv-blue);
  transition: color 0.18s var(--ease);
}

.sv-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: 0;
  height: 2px;
  background: var(--sv-blue);
  transition: right 0.26s var(--ease);
}

.sv-nav__link:hover {
  color: var(--sv-navy);
}

.sv-nav__link:hover::after,
.sv-nav__link[aria-current="page"]::after {
  right: 0;
}

.sv-nav__link[aria-current="page"] {
  color: var(--sv-navy);
  font-weight: 600;
}

.sv-nav__toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--sv-line-strong);
  border-radius: var(--radius-sm);
  align-items: center;
  justify-content: center;
  flex: none;
}

.sv-nav__toggle span,
.sv-nav__toggle span::before,
.sv-nav__toggle span::after {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--sv-navy);
  transition: transform 0.25s var(--ease), opacity 0.2s var(--ease);
}

.sv-nav__toggle span::before,
.sv-nav__toggle span::after {
  content: "";
  position: absolute;
}

.sv-nav__toggle span::before {
  transform: translateY(-6px);
}

.sv-nav__toggle span::after {
  transform: translateY(6px);
}

.sv-nav__toggle[aria-expanded="true"] span {
  background: transparent;
}

.sv-nav__toggle[aria-expanded="true"] span::before {
  transform: rotate(45deg);
}

.sv-nav__toggle[aria-expanded="true"] span::after {
  transform: rotate(-45deg);
}

/* ----------------------------------------------------------------- hero -- */

.hero {
  background: var(--sv-white);
  border-bottom: 1px solid var(--sv-line);
  padding-block: clamp(2.5rem, 1.8rem + 3.4vw, 4.25rem);
}

.hero__intro {
  max-width: 660px;
}

.hero__title {
  font-size: var(--fs-hero);
  line-height: 1.14;
}

.hero__lede {
  margin-top: var(--space-sm);
  font-size: var(--fs-lede);
  line-height: 1.6;
  max-width: 58ch;
  color: var(--sv-text-muted);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: var(--space-md);
}

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  margin-top: var(--space-md);
  font-size: var(--fs-small);
  color: var(--sv-text-muted);
}

.hero__meta li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.hero__meta li::before {
  content: "";
  width: 5px;
  height: 5px;
  background: var(--sv-blue);
  border-radius: 50%;
  flex: none;
}

/* Media on one side, 2x2 card grid on the other. */
.hero__showcase {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(1.5rem, 3vw, 2.75rem);
  align-items: start;
  margin-top: var(--space-lg);
}

.hero__media {
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--sv-blue-pale);
  border: 1px solid var(--sv-line);
  /* Fixed ratio so an SVG now and a JPG later occupy the same box. */
  aspect-ratio: 4 / 3;
}

.hero__media img,
.hero__media svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero__cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

/* ---------------------------------------------------------------- grids -- */

.grid {
  display: grid;
  gap: var(--space-sm);
}

.grid--4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}
.grid--3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.grid--2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(2rem, 4.5vw, 4rem);
  align-items: center;
}

.split--wide-left {
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
}

.split--top {
  align-items: start;
}

/* ------------------------------------------------------------- prose ---- */

.prose {
  max-width: 68ch;
}

.prose > * + * {
  margin-top: var(--space-sm);
}

.prose h3 {
  margin-top: var(--space-lg);
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--sv-line);
}

.prose h3:first-child {
  margin-top: 0;
}

.prose p {
  color: var(--sv-text-muted);
}

.prose strong {
  color: var(--sv-navy);
}

/* --------------------------------------------------------------- footer -- */

.sv-footer {
  background: var(--sv-navy);
  color: var(--sv-white);
  padding-block: var(--space-xl) var(--space-md);
}

.sv-footer__grid {
  display: grid;
  grid-template-columns: 1.3fr 0.8fr 1fr 1.1fr;
  gap: var(--space-lg) var(--space-md);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid rgba(255, 255, 255, 0.18);
}

.sv-footer h2,
.sv-footer h3 {
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--sv-on-blue-muted);
  margin-bottom: var(--space-sm);
}

.sv-footer__links li + li {
  margin-top: 0.55rem;
}

.sv-footer__links a {
  color: rgba(255, 255, 255, 0.86);
  font-size: 0.93rem;
  transition: color 0.18s var(--ease);
}

.sv-footer__links a:hover {
  color: var(--sv-white);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.sv-footer__brand p {
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.93rem;
  margin-top: var(--space-sm);
  max-width: 34ch;
}

/* Address / phone / fax block */
.sv-footer__contact {
  font-size: 0.93rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.86);
}

.sv-footer__contact a {
  color: rgba(255, 255, 255, 0.86);
}

.sv-footer__contact a:hover {
  color: var(--sv-white);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.sv-footer__contact dt {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.52);
  margin-top: 0.7rem;
}

.sv-footer__contact dt:first-child {
  margin-top: 0;
}

.sv-footer__social {
  display: flex;
  gap: 0.5rem;
  margin-top: var(--space-md);
}

.sv-footer__social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: var(--radius-sm);
  color: rgba(255, 255, 255, 0.86);
  transition: background 0.2s var(--ease), color 0.2s var(--ease),
    border-color 0.2s var(--ease);
}

.sv-footer__social a:hover {
  background: var(--sv-white);
  border-color: var(--sv-white);
  color: var(--sv-navy);
}

.sv-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm) var(--space-md);
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-md);
  font-size: 0.84rem;
  color: rgba(255, 255, 255, 0.6);
}

.sv-footer__bottom nav {
  display: flex;
  gap: var(--space-md);
}

.sv-footer__bottom a:hover {
  color: var(--sv-white);
}

/* ------------------------------------------------------------ responsive -- */

@media (max-width: 1080px) {
  .grid--4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .sv-footer__grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 900px) {
  .grid--3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  /* Media above, cards below — the 2x2 card grid is preserved. */
  .hero__showcase {
    grid-template-columns: minmax(0, 1fr);
  }
  .hero__media {
    aspect-ratio: 16 / 9;
  }
}

@media (max-width: 820px) {
  .split,
  .split--wide-left {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 760px) {
  :root {
    --header-h: 64px;
  }

  .sv-nav__toggle {
    display: inline-flex;
    position: relative;
  }

  .sv-nav {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--sv-white);
    border-bottom: 1px solid var(--sv-line);
    padding: var(--space-sm) clamp(1.25rem, 4vw, 2.5rem) var(--space-md);
    box-shadow: var(--shadow);
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.22s var(--ease), transform 0.22s var(--ease),
      visibility 0.22s;
  }

  .sv-nav.is-open {
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .sv-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .sv-nav__link {
    display: block;
    padding: 0.85rem 0;
    font-size: 1.02rem;
    border-bottom: 1px solid var(--sv-line);
  }

  .sv-nav__link::after {
    display: none;
  }

  .sv-nav > .btn {
    margin-top: var(--space-sm);
    justify-content: center;
  }
}

@media (max-width: 620px) {
  .grid--4,
  .grid--3,
  .grid--2 {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero__cards {
    grid-template-columns: minmax(0, 1fr);
  }

  .sv-footer__grid {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .sv-footer__bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}