/* ============================================
   QX Properties Ltd — Design System
   ============================================ */

/* --- Tokens --- */
:root {
  --bg: #f7f5f1;
  --bg-alt: #efece6;
  --ink: #1a1a1a;
  --ink-soft: #4a4a4a;
  --ink-mute: #8a8580;
  --line: #d9d4cb;
  --accent: #1f3a2e;
  --accent-soft: #2d5443;
  --accent-pale: #e8eee9;
  --paper: #fdfbf7;

  --serif: "Cormorant Garamond", "Times New Roman", Georgia, serif;
  --sans: "Inter Tight", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, monospace;

  --max: 1280px;
  --gutter: clamp(1.25rem, 4vw, 3rem);

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }

/* --- Typography --- */
.eyebrow {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-mute);
  font-weight: 500;
}

h1, h2, h3, h4 {
  font-family: var(--serif);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.05;
  color: var(--ink);
}

h1 { font-size: clamp(2.75rem, 7vw, 5.5rem); }
h2 { font-size: clamp(2rem, 4.5vw, 3.5rem); }
h3 { font-size: clamp(1.4rem, 2.4vw, 1.9rem); }
h4 { font-size: 1.15rem; font-family: var(--sans); font-weight: 500; letter-spacing: -0.01em; }

p { color: var(--ink-soft); }
.lead {
  font-size: clamp(1.05rem, 1.4vw, 1.25rem);
  line-height: 1.55;
  color: var(--ink-soft);
  max-width: 60ch;
}

em { font-style: italic; color: var(--accent); font-family: var(--serif); font-size: 1.05em; }

/* --- Layout helpers --- */
.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

section { padding: clamp(4rem, 9vw, 7rem) 0; }

.divider {
  height: 1px;
  background: var(--line);
  border: none;
  margin: 0;
}

/* --- Header / Nav --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(247, 245, 241, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease);
}
.site-header.scrolled { border-bottom-color: var(--line); }

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem var(--gutter);
  max-width: var(--max);
  margin: 0 auto;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  font-family: var(--serif);
  font-size: 1.4rem;
  letter-spacing: -0.01em;
}
.brand-mark {
  font-family: var(--serif);
  font-style: italic;
  color: var(--accent);
}
.brand-suffix {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ink-mute);
  align-self: center;
  padding-bottom: 2px;
}

.nav-links {
  display: flex;
  gap: 2.25rem;
  list-style: none;
  align-items: center;
}
.nav-links a {
  font-size: 0.92rem;
  color: var(--ink-soft);
  position: relative;
  transition: color 0.2s var(--ease);
}
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0; bottom: -4px;
  width: 100%;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s var(--ease);
}
.nav-links a:hover { color: var(--ink); }
.nav-links a:hover::after,
.nav-links a.active::after { transform: scaleX(1); }
.nav-links a.active { color: var(--ink); }

.nav-cta {
  border: 1px solid var(--ink);
  padding: 0.6rem 1.2rem;
  font-size: 0.85rem;
  border-radius: 999px;
  transition: all 0.25s var(--ease);
}
.nav-cta:hover { background: var(--ink); color: var(--paper); }

/* Mobile nav */
.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  align-items: center;
}
.nav-toggle span {
  width: 22px; height: 1.5px;
  background: var(--ink);
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}
.nav-toggle.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

@media (max-width: 820px) {
  .nav-toggle { display: flex; }
  .nav-links {
    position: fixed;
    inset: 64px 0 0 0;
    background: var(--bg);
    flex-direction: column;
    justify-content: flex-start;
    padding: 3rem var(--gutter);
    gap: 1.75rem;
    transform: translateX(100%);
    transition: transform 0.4s var(--ease);
  }
  .nav-links.open { transform: translateX(0); }
  .nav-links a { font-size: 1.4rem; font-family: var(--serif); }
  .nav-cta { font-size: 1rem; padding: 0.85rem 1.6rem; }
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.95rem 1.6rem;
  border-radius: 999px;
  font-size: 0.92rem;
  letter-spacing: 0.01em;
  transition: all 0.3s var(--ease);
  cursor: pointer;
  font-family: var(--sans);
}
.btn-primary {
  background: var(--ink);
  color: var(--paper);
}
.btn-primary:hover {
  background: var(--accent);
  transform: translateY(-1px);
}
.btn-ghost {
  border: 1px solid var(--line);
  color: var(--ink);
}
.btn-ghost:hover {
  border-color: var(--ink);
  background: var(--paper);
}
.btn .arrow {
  transition: transform 0.3s var(--ease);
}
.btn:hover .arrow { transform: translateX(4px); }

/* --- Hero (home) --- */
.hero {
  padding: clamp(4rem, 10vw, 8rem) 0 clamp(3rem, 6vw, 5rem);
  position: relative;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: end;
}
.hero-eyebrow {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2rem;
}
.hero-eyebrow .line {
  width: 60px; height: 1px;
  background: var(--ink-mute);
}
.hero h1 { margin-bottom: 1.5rem; }
.hero h1 .em-serif {
  font-style: italic;
  color: var(--accent);
}
.hero-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 2rem;
  padding-top: 2.5rem;
  margin-top: 3rem;
  border-top: 1px solid var(--line);
}
.hero-meta div p:first-child {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 0.5rem;
}
.hero-meta div p:last-child {
  font-family: var(--serif);
  font-size: 1.15rem;
  color: var(--ink);
  line-height: 1.3;
}

@media (min-width: 900px) {
  .hero-grid {
    grid-template-columns: 1.4fr 1fr;
    gap: 5rem;
  }
}

/* --- Page header (subpages) --- */
.page-header {
  padding: clamp(3.5rem, 7vw, 6rem) 0 clamp(2.5rem, 5vw, 4rem);
}
.page-header .eyebrow { margin-bottom: 1.25rem; display: inline-block; }
.page-header h1 { max-width: 14ch; margin-bottom: 1.5rem; }
.page-header .lead { max-width: 56ch; }

/* --- Section heading --- */
.section-head {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  margin-bottom: 4rem;
  align-items: end;
}
.section-head .eyebrow { display: block; }
.section-head h2 { max-width: 18ch; }
.section-head .lead { max-width: 50ch; }

@media (min-width: 800px) {
  .section-head {
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
  }
}

/* --- Service cards --- */
.services {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
@media (min-width: 720px) {
  .services { grid-template-columns: 1fr 1fr; }
}
@media (min-width: 1080px) {
  .services { grid-template-columns: repeat(3, 1fr); }
}

.service {
  background: var(--bg);
  padding: 2.5rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  transition: background 0.3s var(--ease);
  position: relative;
}
.service:hover { background: var(--paper); }
.service-num {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  color: var(--accent);
}
.service h3 { margin-bottom: 0.25rem; }
.service p { font-size: 0.95rem; }
.service ul {
  list-style: none;
  margin-top: auto;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.service li {
  font-size: 0.85rem;
  color: var(--ink-soft);
  padding-left: 1.1rem;
  position: relative;
}
.service li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--accent);
}

/* --- Process / Steps --- */
.process-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid var(--line);
}
.process-step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.5rem 2rem;
  padding: 2.5rem 0;
  border-bottom: 1px solid var(--line);
  transition: padding 0.3s var(--ease);
}
.process-step:hover { padding-left: 1rem; }

@media (min-width: 800px) {
  .process-step {
    grid-template-columns: 80px 1fr 2fr;
    gap: 3rem;
  }
}

.process-step .step-num {
  font-family: var(--serif);
  font-style: italic;
  font-size: 2.5rem;
  color: var(--accent);
  line-height: 1;
}
.process-step h3 {
  font-size: clamp(1.3rem, 2vw, 1.6rem);
}
.process-step p { max-width: 60ch; }

/* --- Stats / pillars row --- */
.pillars {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2rem;
  padding: 3rem 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.pillar h4 {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.5rem;
  color: var(--accent);
  margin-bottom: 0.75rem;
  font-weight: 400;
}
.pillar p { font-size: 0.92rem; }

/* --- About content --- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: start;
}
@media (min-width: 900px) {
  .about-grid { grid-template-columns: 1fr 1.5fr; gap: 5rem; }
}
.about-grid .body p {
  font-size: 1.05rem;
  line-height: 1.7;
  margin-bottom: 1.25rem;
  max-width: 62ch;
}
.about-aside {
  position: sticky;
  top: 100px;
  padding: 2rem;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 4px;
}
.about-aside .eyebrow { margin-bottom: 1.25rem; display: block; }
.about-aside dl { display: grid; gap: 1.25rem; }
.about-aside dt {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 0.25rem;
}
.about-aside dd { font-family: var(--serif); font-size: 1.1rem; color: var(--ink); }

/* --- CTA strip --- */
.cta-strip {
  background: var(--ink);
  color: var(--paper);
  padding: clamp(4rem, 8vw, 6rem) 0;
  position: relative;
  overflow: hidden;
}
.cta-strip::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(45, 84, 67, 0.25), transparent 70%);
  pointer-events: none;
}
.cta-strip .wrap {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: end;
  position: relative;
}
@media (min-width: 800px) {
  .cta-strip .wrap { grid-template-columns: 2fr 1fr; }
}
.cta-strip h2 {
  color: var(--paper);
  max-width: 16ch;
}
.cta-strip h2 em {
  color: #c4d6cb;
  font-style: italic;
  font-family: var(--serif);
  font-size: 1em;
}
.cta-strip p { color: rgba(253, 251, 247, 0.7); margin-bottom: 1.5rem; }
.cta-strip .btn-primary {
  background: var(--paper);
  color: var(--ink);
}
.cta-strip .btn-primary:hover {
  background: var(--accent-pale);
}

/* --- Contact page --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
}
@media (min-width: 900px) {
  .contact-grid { grid-template-columns: 1.2fr 1fr; gap: 5rem; }
}
.contact-block {
  padding: 2rem 0;
  border-top: 1px solid var(--line);
}
.contact-block:last-child { border-bottom: 1px solid var(--line); }
.contact-block .eyebrow { display: block; margin-bottom: 0.75rem; }
.contact-block a {
  font-family: var(--serif);
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  color: var(--ink);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease), color 0.3s var(--ease);
}
.contact-block a:hover { color: var(--accent); border-bottom-color: var(--accent); }
.contact-block p { font-size: 1rem; margin-top: 0.5rem; }

/* --- Footer --- */
.site-footer {
  background: var(--bg-alt);
  padding: 4rem 0 2rem;
  border-top: 1px solid var(--line);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
}
@media (min-width: 700px) {
  .footer-grid { grid-template-columns: 2fr 1fr 1fr; }
}
.footer-grid h4 {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 1.25rem;
  font-weight: 500;
}
.footer-grid ul { list-style: none; display: grid; gap: 0.6rem; }
.footer-grid a {
  color: var(--ink-soft);
  font-size: 0.92rem;
  transition: color 0.2s var(--ease);
}
.footer-grid a:hover { color: var(--accent); }

.footer-brand p {
  max-width: 38ch;
  font-size: 0.92rem;
  margin-top: 1rem;
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--ink-mute);
  font-family: var(--mono);
  letter-spacing: 0.05em;
}

/* --- Reveal animation ---
   Only hide content when JS is available to reveal it later.
   Without the .js class on <html>, content shows immediately.
   This protects against JS failure / slow networks. */
.js .reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}
.js .reveal.in {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .js .reveal { opacity: 1; transform: none; }
}

/* --- Background detail (subtle grid texture) --- */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 10%, rgba(31, 58, 46, 0.03), transparent 40%),
    radial-gradient(circle at 80% 90%, rgba(31, 58, 46, 0.025), transparent 40%);
  pointer-events: none;
  z-index: -1;
}