/* ============================================================
   PETRA VENTURES PLC — Stylesheet
   Old Money · Classic · Modern
   ============================================================ */

/* UPDATE CONTACT INFO in index.html — search for "UPDATE:" */

@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,300;0,400;0,500;0,600;1,300;1,400&family=Montserrat:wght@300;400;500;600&display=swap');

:root {
  --cream:        #F8F5EF;
  --cream-dark:   #EDE8DE;
  --ink:          #1A1A18;
  --ink-soft:     #3A3A36;
  --gold:         #A5864A;
  --gold-light:   #C9A96E;
  --gold-pale:    #E8D9B8;
  --white:        #FFFFFF;
  --rule:         1px solid rgba(165,134,74,0.35);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; font-size: 16px; }

body {
  background: var(--cream);
  color: var(--ink);
  font-family: 'Montserrat', sans-serif;
  font-weight: 300;
  line-height: 1.8;
  overflow-x: hidden;
}

/* ── Grain overlay ── */
body::before {
  content: '';
  position: fixed; inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
  pointer-events: none; z-index: 9999; opacity: .45;
}

/* ── Typography ── */
h1, h2, h3, h4 { font-family: 'Cormorant Garamond', serif; font-weight: 400; }
h2 { font-size: clamp(2rem, 4vw, 3rem); letter-spacing: .04em; }
p  { font-size: .92rem; color: var(--ink-soft); letter-spacing: .02em; }

.section-label {
  font-family: 'Montserrat', sans-serif;
  font-size: .65rem;
  font-weight: 600;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--gold);
  display: block;
  margin-bottom: 1rem;
}

/* ── Gold rule ── */
.rule {
  width: 60px; height: 1px;
  background: var(--gold);
  margin: 1.4rem auto;
}
.rule.left { margin-left: 0; }

/* ── NAV ── */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; justify-content: end; align-items: center;
  padding: 1.2rem 5vw;
  background: transparent;
  transition: background .4s, box-shadow .4s;
}
nav.scrolled {
  background: rgba(248,245,239,.96);
  box-shadow: 0 1px 0 rgba(165,134,74,.2);
  backdrop-filter: blur(8px);
}
.nav-logo img { height: 52px; filter: grayscale(10%); }
.nav-links { display: flex; gap: 2.4rem; list-style: none; }
.nav-links a {
  font-size: .72rem; font-weight: 500;
  letter-spacing: .18em; text-transform: uppercase;
  color: var(--ink); text-decoration: none;
  position: relative; padding-bottom: 3px;
  transition: color .3s;
}
.nav-links a::after {
  content: ''; position: absolute; bottom: 0; left: 0;
  width: 0; height: 1px; background: var(--gold);
  transition: width .35s;
}
.nav-links a:hover { color: var(--gold); }
.nav-links a:hover::after { width: 100%; }

.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; background: none; border: none; }
.hamburger span { display: block; width: 24px; height: 1px; background: var(--ink); transition: .3s; }

/* ── HERO ── */
#hero {
  min-height: 100vh;
  display: flex; flex-direction: column;
  justify-content: center; align-items: center;
  text-align: center;
  padding: 10rem 5vw 6rem;
  position: relative;
  background: var(--cream);
}
#hero::after {
  content: '';
  position: absolute; bottom: 0; left: 10%; right: 10%; height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
}
.hero-logo { width: min(260px, 55vw); margin-bottom: 2.5rem;
  animation: fadeUp .9s ease both; }
.hero-tagline {
  font-family: 'Cormorant Garamond', serif;
  font-size: clamp(2.4rem, 6vw, 4.6rem);
  font-weight: 300; line-height: 1.18;
  letter-spacing: .02em;
  color: var(--ink);
  max-width: 820px;
  animation: fadeUp .9s .2s ease both;
}
.hero-tagline em { font-style: italic; color: var(--gold); }
.hero-sub {
  margin-top: 1.6rem;
  font-size: .82rem; letter-spacing: .2em;
  text-transform: uppercase; color: var(--gold);
  animation: fadeUp .9s .4s ease both;
}
.hero-mantras {
  display: flex; gap: 1.4rem; align-items: center;
  margin-top: 2.4rem; flex-wrap: wrap; justify-content: center;
  animation: fadeUp .9s .55s ease both;
}
.hero-mantras span {
  font-size: .65rem; font-weight: 600;
  letter-spacing: .22em; text-transform: uppercase;
  color: var(--ink-soft);
}
.hero-mantras .dot { color: var(--gold); }
.hero-cta {
  margin-top: 2.8rem;
  display: inline-block; padding: .85rem 2.6rem;
  border: 1px solid var(--gold);
  font-size: .7rem; font-weight: 500;
  letter-spacing: .22em; text-transform: uppercase;
  color: var(--ink); text-decoration: none;
  transition: background .3s, color .3s;
  animation: fadeUp .9s .7s ease both;
}
.hero-cta:hover { background: var(--gold); color: var(--white); }

/* ── SECTIONS ── */
section { padding: 7rem 5vw; }
.section-inner { max-width: 1100px; margin: 0 auto; }

/* ── ABOUT ── */
#about { background: var(--white); }
.about-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 5rem;
  align-items: center;
}
.about-text h2 { margin-bottom: 1.2rem; }
.about-text p { margin-bottom: 1rem; }
.about-values {
  display: grid; grid-template-columns: 1fr 1fr; gap: 1.6rem;
  margin-top: 2rem;
}
.value-item { border-top: 1px solid var(--gold-pale); padding-top: 1rem; }
.value-item h4 {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.1rem; font-weight: 500;
  letter-spacing: .06em; margin-bottom: .3rem;
}
.value-item p { font-size: .8rem; }
.about-logo-wrap { display: flex; justify-content: center; align-items: center; }
.about-logo-wrap img {
  width: min(320px, 100%);
  filter: drop-shadow(0 20px 50px rgba(0,0,0,.08));
}

/* ── DIVISIONS ── */
#divisions { background: var(--cream); }
.divisions-header { text-align: center; margin-bottom: 4rem; }
.divisions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2px;
}
.division-card {
  background: var(--white);
  padding: 2.6rem 2rem;
  position: relative; overflow: hidden;
  transition: transform .35s;
}
.division-card::before {
  content: '';
  position: absolute; top: 0; left: 0; width: 3px; height: 0;
  background: var(--gold); transition: height .4s;
}
.division-card:hover { transform: translateY(-4px); }
.division-card:hover::before { height: 100%; }
.division-num {
  font-family: 'Cormorant Garamond', serif;
  font-size: 3rem; font-weight: 300;
  color: var(--gold-pale); line-height: 1;
  margin-bottom: .8rem;
}
.division-card h3 {
  font-size: 1.15rem; font-weight: 500;
  letter-spacing: .06em; margin-bottom: .6rem;
}
.division-card p { font-size: .82rem; }

/* ── PHILOSOPHY ── */
#philosophy {
  background: var(--ink);
  color: var(--cream);
  text-align: center;
}
#philosophy .section-label { color: var(--gold-light); }
#philosophy h2 { color: var(--cream); }
#philosophy .rule { background: var(--gold-light); }
.philosophy-quote {
  font-family: 'Cormorant Garamond', serif;
  font-size: clamp(1.5rem, 3.5vw, 2.4rem);
  font-weight: 300; font-style: italic;
  line-height: 1.5; max-width: 780px;
  margin: 0 auto 2rem; color: var(--cream-dark);
  letter-spacing: .02em;
}
.philosophy-grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 1px; margin-top: 3.5rem;
  border: 1px solid rgba(165,134,74,.25);
}
.phil-item {
  padding: 2.4rem 1.5rem;
  border-right: 1px solid rgba(165,134,74,.25);
}
.phil-item:last-child { border-right: none; }
.phil-item h3 {
  font-size: 1.3rem; letter-spacing: .1em;
  color: var(--gold-light); margin-bottom: .5rem;
}
.phil-item p { font-size: .78rem; color: rgba(237,232,222,.65); }

/* ── CONTACT ── */
#contact { background: var(--cream-dark); }
.contact-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 5rem;
  align-items: start;
}
.contact-info h2 { margin-bottom: 1rem; }
.contact-info p { margin-bottom: 1.4rem; max-width: 420px; }
.contact-detail {
  display: flex; align-items: flex-start; gap: 1rem;
  margin-bottom: 1.2rem;
}
.contact-detail .icon {
  width: 36px; height: 36px; flex-shrink: 0;
  border: 1px solid var(--gold);
  display: flex; align-items: center; justify-content: center;
  color: var(--gold); font-size: .9rem;
}
.contact-detail .text { font-size: .82rem; line-height: 1.7; color: var(--ink-soft); }
.contact-detail .label {
  font-size: .6rem; font-weight: 600;
  letter-spacing: .2em; text-transform: uppercase;
  color: var(--gold); display: block; margin-bottom: .1rem;
}

/* Form */
.contact-form { display: flex; flex-direction: column; gap: 1.2rem; }
.form-group { display: flex; flex-direction: column; gap: .4rem; }
.form-group label {
  font-size: .62rem; font-weight: 600;
  letter-spacing: .2em; text-transform: uppercase; color: var(--gold);
}
.form-group input,
.form-group textarea,
.form-group select {
  background: var(--white);
  border: 1px solid var(--gold-pale);
  padding: .85rem 1rem;
  font-family: 'Montserrat', sans-serif;
  font-size: .82rem; color: var(--ink);
  outline: none; transition: border .3s;
  -webkit-appearance: none;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus { border-color: var(--gold); }
.form-group textarea { height: 130px; resize: vertical; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.btn-submit {
  padding: .9rem 2.4rem; background: var(--ink);
  color: var(--cream); border: none;
  font-family: 'Montserrat', sans-serif;
  font-size: .7rem; font-weight: 600;
  letter-spacing: .22em; text-transform: uppercase;
  cursor: pointer; transition: background .3s;
  align-self: flex-start;
}
.btn-submit:hover { background: var(--gold); }

/* ── FOOTER ── */
footer {
  background: var(--ink); color: rgba(237,232,222,.5);
  padding: 2.4rem 5vw;
  text-align: center; font-size: .72rem;
  letter-spacing: .12em;
}
footer .footer-inner {
  max-width: 1100px; margin: 0 auto;
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 1rem;
}
footer .footer-mantras { color: var(--gold); opacity: .5; letter-spacing: .15em; }

/* ── SCROLL ANIMATIONS ── */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .75s, transform .75s; }
.reveal.visible { opacity: 1; transform: none; }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(22px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── RESPONSIVE ── */
@media (max-width: 900px) {
  .about-grid, .contact-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .philosophy-grid { grid-template-columns: 1fr 1fr; }
  .phil-item:nth-child(2) { border-right: none; }
  .about-logo-wrap { display: none; }
}
@media (max-width: 640px) {
  .nav-links { display: none; flex-direction: column; position: absolute;
    top: 100%; left: 0; right: 0;
    background: rgba(248,245,239,.98); padding: 2rem; gap: 1.6rem; }
  .nav-links.open { display: flex; }
  .hamburger { display: flex; }
  .philosophy-grid { grid-template-columns: 1fr; }
  .phil-item { border-right: none; border-bottom: 1px solid rgba(165,134,74,.25); }
  .form-row { grid-template-columns: 1fr; }
}

/* ══════════════════════════════════════════════
   PILLAR BACKGROUND SYSTEM
   ══════════════════════════════════════════════ */

/* Fixed pillars left & right of every section */
.pillar-bg {
  position: absolute;
  top: 0; bottom: 0;
  width: 160px;
  background: url('pillar.png') repeat-y top center / 140px auto;
  opacity: 0;
  pointer-events: none;
  z-index: 0;
  animation: pillarFadeIn 1.8s ease forwards;
}
.pillar-bg.left  { left: 0;  animation-delay: .3s; }
.pillar-bg.right { right: 0; transform: scaleX(-1); animation-delay: .5s; }

@keyframes pillarFadeIn {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: .09; transform: translateY(0); }
}
.pillar-bg.right {
  animation-name: pillarFadeInFlip;
}
@keyframes pillarFadeInFlip {
  from { opacity: 0; transform: scaleX(-1) translateY(30px); }
  to   { opacity: .09; transform: scaleX(-1) translateY(0); }
}

/* Hero gets stronger pillars */
#hero .pillar-bg { opacity: 0; animation-name: heroPillarIn; }
@keyframes heroPillarIn {
  from { opacity: 0; transform: translateY(60px) scale(.96); }
  to   { opacity: .13; transform: translateY(0) scale(1); }
}
#hero .pillar-bg.right {
  animation-name: heroPillarInFlip;
}
@keyframes heroPillarInFlip {
  from { opacity: 0; transform: scaleX(-1) translateY(60px) scale(.96); }
  to   { opacity: .13; transform: scaleX(-1) translateY(0) scale(1); }
}

/* Floating single centered pillar watermark behind hero text */
.hero-pillar-center {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: min(380px, 55vw);
  opacity: 0;
  pointer-events: none;
  z-index: 0;
  animation: centerPillarIn 2s .2s ease forwards;
  filter: blur(.5px) grayscale(20%);
}
@keyframes centerPillarIn {
  from { opacity: 0; transform: translate(-50%, -40%); }
  to   { opacity: .07; transform: translate(-50%, -50%); }
}

/* Slow parallax drift on scroll (JS-driven via CSS var) */
.pillar-parallax {
  will-change: transform;
  transition: transform .05s linear;
}

/* All section wrappers need position:relative for pillar positioning */
section { position: relative; overflow: hidden; }

/* Make section content sit above pillars */
.section-inner, 
.hero-logo, .hero-tagline, .hero-sub, .hero-mantras, .hero-cta {
  position: relative; z-index: 2;
}

/* ── Dark section pillars (philosophy) ── */
#philosophy .pillar-bg {
  filter: invert(1);
  animation-name: pillarFadeInDark;
}
@keyframes pillarFadeInDark {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: .06; transform: translateY(0); }
}
#philosophy .pillar-bg.right { animation-name: pillarFadeInDarkFlip; }
@keyframes pillarFadeInDarkFlip {
  from { opacity: 0; transform: scaleX(-1) translateY(30px); }
  to   { opacity: .06; transform: scaleX(-1) translateY(0); }
}

/* ── Divider pillar ornament between sections ── */
.pillar-divider {
  display: flex; justify-content: center; align-items: center;
  gap: 1.5rem; padding: 1rem 0;
}
.pillar-divider img {
  width: 38px; opacity: .22;
  filter: sepia(.4);
}
.pillar-divider .divider-line {
  flex: 1; height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  max-width: 200px;
}

/* ── Scroll-triggered pillar reveal ── */
.pillar-bg.revealed { opacity: .09 !important; }
#hero .pillar-bg.revealed { opacity: .13 !important; }