/* ============================================================
   CRESTLINE REALTY — Layout (Nav, Footer, Containers)
   ============================================================ */

/* ---- Container ---- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

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

/* ---- Section ---- */
.section {
  padding: var(--section-pad) 0;
}

/* ==========================================================================
   NAVIGATION
   ========================================================================== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 0 var(--gutter);
  transition: background var(--duration-normal) ease,
              border-color var(--duration-normal) ease;
}

.nav::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: var(--gutter);
  right: var(--gutter);
  height: 1px;
  background: var(--color-border);
  transition: opacity var(--duration-normal) ease;
  opacity: 0;
}

.nav.is-scrolled {
  background: rgba(11, 26, 15, 0.82);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
}

.nav.is-scrolled::after {
  opacity: 1;
}

.nav__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

/* ---- Logo ---- */
.nav__logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-display);
  font-size: var(--fs-md);
  font-weight: var(--fw-medium);
  color: var(--color-cream);
  letter-spacing: var(--ls-tight);
  z-index: 1001;
}

.nav__logo-icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-green);
  border-radius: var(--radius-sm);
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: var(--fw-bold);
  color: var(--color-cream);
}

/* ---- Nav Links ---- */
.nav__links {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav__link {
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  font-weight: var(--fw-regular);
  color: var(--color-sage);
  letter-spacing: var(--ls-wide);
  transition: color var(--duration-fast) ease;
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-green);
  transition: width var(--duration-normal) var(--ease-out);
}

.nav__link:hover,
.nav__link--active {
  color: var(--color-cream);
}

.nav__link:hover::after,
.nav__link--active::after {
  width: 100%;
}

/* ---- Mobile Toggle ---- */
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  padding: 4px 0;
  z-index: 1001;
}

.nav__toggle span {
  display: block;
  width: 100%;
  height: 1.5px;
  background: var(--color-cream);
  border-radius: 2px;
  transition: transform var(--duration-normal) var(--ease-out),
              opacity var(--duration-fast) ease;
}

.nav__toggle.is-active span:first-child {
  transform: translateY(3.25px) rotate(45deg);
}

.nav__toggle.is-active span:last-child {
  transform: translateY(-3.25px) rotate(-45deg);
}

/* ---- Mobile Overlay ---- */
.nav__overlay {
  display: none;
}

@media (max-width: 768px) {
  .nav__links {
    display: none;
  }

  .nav__toggle {
    display: flex;
  }

  .nav__overlay {
    display: flex;
    position: fixed;
    inset: 0;
    z-index: 999;
    background: rgba(11, 26, 15, 0.96);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 32px;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--duration-normal) var(--ease-out);
  }

  .nav__overlay.is-open {
    opacity: 1;
    pointer-events: all;
  }

  .nav__overlay-link {
    font-family: var(--font-display);
    font-size: var(--fs-xl);
    color: var(--color-cream);
    opacity: 0;
    transform: translateY(16px);
    transition: opacity var(--duration-normal) var(--ease-out),
                transform var(--duration-normal) var(--ease-out),
                color var(--duration-fast) ease;
  }

  .nav__overlay.is-open .nav__overlay-link {
    opacity: 1;
    transform: translateY(0);
  }

  .nav__overlay.is-open .nav__overlay-link:nth-child(1) { transition-delay: 0.08s; }
  .nav__overlay.is-open .nav__overlay-link:nth-child(2) { transition-delay: 0.14s; }
  .nav__overlay.is-open .nav__overlay-link:nth-child(3) { transition-delay: 0.20s; }
  .nav__overlay.is-open .nav__overlay-link:nth-child(4) { transition-delay: 0.26s; }

  .nav__overlay-link:hover {
    color: var(--color-green-light);
  }
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.footer {
  padding: var(--space-2xl) 0 var(--space-lg);
  border-top: 1px solid var(--color-border);
}

.footer__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.footer__top {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr 1fr;
  gap: var(--space-lg);
  padding-bottom: var(--space-xl);
  border-bottom: 1px solid var(--color-border);
}

.footer__brand-name {
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  color: var(--color-cream);
  margin-bottom: var(--space-xs);
}

.footer__brand-text {
  font-size: var(--fs-sm);
  color: var(--color-text-dim);
  line-height: var(--lh-relaxed);
  max-width: 280px;
}

.footer__col-title {
  font-family: var(--font-body);
  font-size: var(--fs-xs);
  font-weight: var(--fw-medium);
  letter-spacing: var(--ls-ultra);
  text-transform: uppercase;
  color: var(--color-sage);
  margin-bottom: var(--space-sm);
}

.footer__link {
  display: block;
  font-size: var(--fs-sm);
  color: var(--color-text-dim);
  padding: 4px 0;
  transition: color var(--duration-fast) ease;
}

.footer__link:hover {
  color: var(--color-cream);
}

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-md);
}

.footer__copy {
  font-size: var(--fs-xs);
  color: var(--color-text-dim);
}

.footer__bottom-links {
  display: flex;
  gap: 24px;
}

.footer__bottom-links a {
  font-size: var(--fs-xs);
  color: var(--color-text-dim);
  transition: color var(--duration-fast) ease;
}

.footer__bottom-links a:hover {
  color: var(--color-cream);
}

@media (max-width: 768px) {
  .footer__top {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg) var(--space-md);
  }

  .footer__bottom {
    flex-direction: column;
    gap: var(--space-xs);
    text-align: center;
  }
}

@media (max-width: 480px) {
  .footer__top {
    grid-template-columns: 1fr;
  }
}