/*
 * Author: Manoj Mathangadeera
 * Contact: aivotandra@gmail.com / www.aivotandra.com
 * Company: Adeon Bridge Technology - Dubai, UAE / www.adeon.ae
 * Copyright (c) 2026 Manoj Mathangadeera. All rights reserved.
 *
 * Project: JJ Prime Properties
 * Client: ATTESTAR Private Limited - Sri Lanka
 *
 * File Name: assets/css/layout.css
 * File Description: Layout styles: site header/navigation, footer, section rhythm, and grid helpers.
 */

/* ---- Site header ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-paper); /* fully opaque — a translucent header lets dark-section text bleed/ghost through as it scrolls underneath */
  border-bottom: var(--border-hairline);
  /* Note: intentionally no backdrop-filter here — it would make this
     element a containing block for position:fixed descendants (the
     mobile .nav overlay), sizing the overlay to the header's box
     instead of the viewport. */
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding-block: var(--space-sm);
}

.site-header__logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.site-header__logo img {
  height: 40px;
  width: auto;
}

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

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

.nav__link {
  position: relative;
  font-size: var(--fs-small);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--color-charcoal);
  padding-block: var(--space-2xs);
}

.nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: 0;
  height: 1px;
  background: var(--gradient-gold);
  transition: right var(--duration-med) var(--ease-standard);
}

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

.nav__link[aria-current="page"] {
  color: var(--color-ink);
}

.nav__cta {
  flex-shrink: 0;
}

.nav__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  padding: 0;
}

.nav__toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--color-ink);
  transition: transform var(--duration-fast) var(--ease-standard), opacity var(--duration-fast) var(--ease-standard);
}

.nav__toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav__toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.nav__toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 860px) {
  .nav__toggle {
    display: flex;
  }

  .nav {
    position: fixed;
    inset: 0;
    top: 0;
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    gap: var(--space-xl);
    background: var(--color-paper);
    padding: 6.5rem var(--container-pad) var(--space-xl);
    transform: translateX(100%);
    transition: transform var(--duration-med) var(--ease-standard);
    overflow-y: auto;
  }

  .nav.is-open {
    transform: translateX(0);
  }

  .nav__list {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-md);
  }

  .nav__link {
    font-size: var(--fs-h4);
    text-transform: none;
    letter-spacing: 0;
  }
}

/* ---- Footer ---- */
.site-footer {
  background: var(--color-ink);
  color: var(--color-mist);
  padding-block: var(--space-2xl) var(--space-lg);
  border-top: 0.5px solid transparent;
  border-image: var(--gradient-gold) 1;
}

.site-footer a {
  color: var(--color-mist);
}

.site-footer a:hover {
  color: var(--color-gold-light);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: var(--space-xl);
  padding-bottom: var(--space-xl);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

@media (max-width: 860px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    row-gap: var(--space-lg);
  }
}

@media (max-width: 560px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

.footer-brand img {
  height: 60px;
  margin-bottom: var(--space-sm);
}

.footer-brand p {
  color: rgba(209, 209, 209, 0.75);
  font-size: var(--fs-small);
  max-width: 32ch;
}

.footer-heading {
  font-size: var(--fs-eyebrow);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-gold-mid);
  margin-bottom: var(--space-sm);
  font-weight: 600;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-2xs);
  font-size: var(--fs-small);
}

.footer-contact {
  font-size: var(--fs-small);
  font-style: normal;
  display: flex;
  flex-direction: column;
  gap: var(--space-2xs);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-sm);
  padding-top: var(--space-lg);
  font-size: var(--fs-small);
  color: rgba(209, 209, 209, 0.6);
}

.footer-legal {
  display: flex;
  gap: var(--space-md);
}

/* ---- Section rhythm ---- */
section {
  padding-block: var(--space-2xl);
}

.section--tight {
  padding-block: var(--space-xl);
}

.section--dark {
  background: var(--color-ink);
  color: var(--color-mist);
}

.section--dark h2, .section--dark h3 {
  color: var(--color-white);
}

.section--paper-alt {
  background: var(--color-white);
}

.section-head {
  max-width: 720px;
  margin-bottom: var(--space-xl);
}

.section-head > .eyebrow {
  margin-bottom: var(--space-sm);
}

.section-head--center {
  margin-inline: auto;
  text-align: center;
}

.section-head--center .eyebrow::before {
  display: none;
}

/* ---- Grid helpers ---- */
.grid {
  display: grid;
  gap: var(--space-lg);
}

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

@media (max-width: 900px) {
  .grid--3, .grid--4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }
}