/* =========================================================
   Components — buttons, header/nav, forms, footer, links
   ========================================================= */

/* ---------- Buttons ---------- */

.btn {
  --btn-bg: var(--color-ink);
  --btn-fg: #fff;
  --btn-border: var(--color-ink);

  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.4rem;
  background: var(--btn-bg);
  color: var(--btn-fg);
  border: 1px solid var(--btn-border);
  border-radius: var(--radius-pill);
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  line-height: 1;
  text-align: center;
  cursor: pointer;
  transition:
    background var(--dur) var(--ease-out),
    color var(--dur) var(--ease-out),
    border-color var(--dur) var(--ease-out),
    transform var(--dur-fast) var(--ease-out);
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

.btn--primary {
  --btn-bg: var(--color-ink);
  --btn-fg: #fff;
  --btn-border: var(--color-ink);
}

.btn--primary:hover {
  --btn-bg: var(--color-accent);
  --btn-border: var(--color-accent);
}

.btn--ghost {
  --btn-bg: transparent;
  --btn-fg: #fff;
  --btn-border: rgba(255, 255, 255, 0.55);
}

.btn--ghost:hover {
  --btn-bg: rgba(255, 255, 255, 0.08);
  --btn-border: #fff;
}

.btn--outline {
  --btn-bg: transparent;
  --btn-fg: var(--color-ink);
  --btn-border: var(--color-border-strong);
}

.btn--outline:hover {
  --btn-bg: var(--color-ink);
  --btn-fg: #fff;
  --btn-border: var(--color-ink);
}

.btn--sm {
  padding: 0.55rem 1rem;
  font-size: 0.8125rem;
}

.btn--lg {
  padding: 1rem 1.6rem;
  font-size: 1rem;
}

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

/* ---------- Quiet links ---------- */

.link-quiet {
  font-size: 0.9rem;
  color: var(--color-ink);
  letter-spacing: 0.01em;
  font-weight: 500;
}

.link-quiet:hover {
  color: var(--color-accent-ink);
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  font-weight: 500;
  font-size: 0.9375rem;
  color: var(--color-ink);
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: color var(--dur) var(--ease-out),
    border-color var(--dur) var(--ease-out),
    letter-spacing var(--dur) var(--ease-out);
}

.link-arrow:hover {
  color: var(--color-accent-ink);
  border-color: currentColor;
  letter-spacing: 0.02em;
}

/* ---------- Header / Nav ---------- */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(255, 255, 255, 0);
  backdrop-filter: saturate(140%) blur(0px);
  -webkit-backdrop-filter: saturate(140%) blur(0px);
  transition:
    background var(--dur) var(--ease-out),
    border-color var(--dur) var(--ease-out),
    backdrop-filter var(--dur) var(--ease-out);
  border-bottom: 1px solid transparent;
}

.site-header.is-scrolled {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(140%) blur(14px);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  border-bottom-color: var(--color-border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: var(--space-5);
}

.brand {
  display: inline-flex;
  align-items: center;
}

.brand__logo {
  height: 38px;
  width: auto;
  display: block;
  border-radius: 4px;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.nav__list a {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-ink);
  position: relative;
  padding: 6px 0;
}

.nav__list a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--dur) var(--ease-out);
}

.nav__list a:hover {
  color: var(--color-accent-ink);
}

.nav__list a:hover::after {
  transform: scaleX(1);
}

/* On the hero, header text inverts before scroll */
.site-header:not(.is-scrolled) .nav__list a,
.site-header:not(.is-scrolled) .link-quiet {
  color: rgba(255, 255, 255, 0.92);
}

.site-header:not(.is-scrolled) .nav__list a:hover {
  color: #fff;
}

.site-header:not(.is-scrolled) .btn--primary {
  --btn-bg: rgba(255, 255, 255, 0.95);
  --btn-fg: var(--color-ink);
  --btn-border: rgba(255, 255, 255, 0.95);
}

.site-header:not(.is-scrolled) .btn--primary:hover {
  --btn-bg: var(--color-accent);
  --btn-fg: #fff;
  --btn-border: var(--color-accent);
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-5);
}

/* Hamburger */
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  border-radius: 8px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--color-ink);
  transition: transform var(--dur) var(--ease-out),
    opacity var(--dur) var(--ease-out),
    background var(--dur) var(--ease-out);
}

.site-header:not(.is-scrolled) .nav-toggle span {
  background: #fff;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* Mobile nav drawer */
.mobile-nav {
  position: fixed;
  inset: var(--header-h) 0 auto 0;
  background: #fff;
  border-bottom: 1px solid var(--color-border);
  padding: 1.25rem var(--gutter) 1.5rem;
  transform: translateY(-12px);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur) var(--ease-out),
    transform var(--dur) var(--ease-out);
}

.mobile-nav[data-open="true"] {
  opacity: 1;
  transform: none;
  pointer-events: auto;
}

.mobile-nav ul {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.mobile-nav a {
  display: block;
  padding: 0.85rem 0.25rem;
  font-size: 1.0625rem;
  font-weight: 500;
  border-bottom: 1px solid var(--color-border);
}

.mobile-nav .btn {
  margin-top: 1rem;
}

@media (max-width: 960px) {
  .nav,
  .site-header__actions .link-quiet,
  .site-header__actions .btn {
    display: none;
  }
  .nav-toggle {
    display: inline-flex;
  }
}

/* ---------- Forms ---------- */

input[type="text"],
input[type="email"],
input[type="tel"],
textarea {
  width: 100%;
  padding: 0.95rem 1.1rem;
  background: #fff;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  font-size: 1rem;
  line-height: 1.4;
  transition: border-color var(--dur) var(--ease-out),
    box-shadow var(--dur) var(--ease-out);
}

textarea {
  resize: vertical;
  min-height: 100px;
}

input::placeholder,
textarea::placeholder {
  color: var(--color-ink-soft);
}

input:focus,
textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 4px rgba(47, 166, 201, 0.15);
}

label > span {
  display: block;
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--color-ink-muted);
  margin-bottom: 0.4rem;
  text-transform: uppercase;
}

/* Pretty radio chips */
.chip {
  position: relative;
  cursor: pointer;
}

.chip input {
  position: absolute;
  opacity: 0;
  inset: 0;
}

.chip span {
  display: inline-flex;
  align-items: center;
  padding: 0.55rem 1rem;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-pill);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-ink-muted);
  background: #fff;
  transition: all var(--dur) var(--ease-out);
}

.chip:hover span {
  border-color: var(--color-ink);
  color: var(--color-ink);
}

.chip input:checked + span {
  background: var(--color-ink);
  color: #fff;
  border-color: var(--color-ink);
}

/* ---------- Footer ---------- */

.site-footer {
  background: var(--color-bg-dark);
  color: var(--color-ink-on-dark);
  padding-top: clamp(3.5rem, 2rem + 4vw, 5.5rem);
  margin-top: 0;
}

.site-footer__inner {
  display: grid;
  grid-template-columns: 1.2fr 2fr;
  gap: clamp(2rem, 1rem + 3vw, 4rem);
  padding-bottom: 3rem;
}

.site-footer__brand {
  max-width: 360px;
}

.site-footer__logo {
  height: 56px;
  width: auto;
  border-radius: 6px;
  margin-bottom: 1.25rem;
}

.site-footer__tag {
  color: var(--color-ink-on-dark-muted);
  font-size: 0.95rem;
  line-height: 1.55;
}

.site-footer__cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-7);
}

.site-footer__cols h4 {
  font-size: 0.75rem;
  letter-spacing: var(--tracking-eyebrow);
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.55);
  margin-bottom: 1rem;
}

.site-footer__cols ul {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.site-footer__cols a {
  color: var(--color-ink-on-dark);
  font-size: 0.95rem;
  border-bottom: 1px solid transparent;
  padding-bottom: 1px;
  transition: color var(--dur) var(--ease-out),
    border-color var(--dur) var(--ease-out);
}

.site-footer__cols a:hover {
  color: var(--color-accent);
  border-color: currentColor;
}

.site-footer__cols .site-footer__person {
  font-size: 0.72rem;
  letter-spacing: var(--tracking-eyebrow);
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.55);
  margin-top: 0.6rem;
}

.site-footer__cols ul > li.site-footer__person:first-child {
  margin-top: 0;
}

.site-footer__cols .site-footer__brokerage {
  margin-top: 0.6rem;
  color: rgba(255, 255, 255, 0.65);
  font-size: 0.85rem;
  line-height: 1.5;
}

.site-footer__compliance {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding-block: 1.5rem 1.25rem;
  border-top: 1px solid var(--color-border-on-dark);
  color: rgba(255, 255, 255, 0.55);
  font-size: 0.75rem;
  line-height: 1.6;
}

.site-footer__seal {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  object-fit: contain;
  opacity: 0.95;
}

.site-footer__disclosure {
  margin: 0;
  max-width: 92ch;
}

@media (max-width: 600px) {
  .site-footer__compliance {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }
  .site-footer__seal {
    width: 44px;
    height: 44px;
  }
}

.site-footer__legal {
  border-top: 1px solid var(--color-border-on-dark);
  padding-block: 1rem 1.5rem;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.8125rem;
}

@media (max-width: 820px) {
  .site-footer__inner {
    grid-template-columns: 1fr;
  }
  .site-footer__cols {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 540px) {
  .site-footer__cols {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
}