/*  ============================================================================
    AURAFY — layout.css
    Header (slate paper + hairline rule), nav (clean ink-underlined active),
    dropdown (white card with violet hover), footer (deep ink with cyan accents),
    sections (restrained editorial spacing, hairline-ruled heads).
    ============================================================================ */

/* ============================================================================
   HEADER
   ============================================================================ */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.85);
  backdrop-filter: saturate(160%) blur(18px);
  -webkit-backdrop-filter: saturate(160%) blur(18px);
  border-bottom: var(--rule-soft);
  transition: border-color var(--t-med) var(--ease), background var(--t-med) var(--ease);
}
.site-header[data-scrolled="true"] {
  background: rgba(255,255,255,.96);
  border-bottom-color: var(--color-border-strong);
}
.site-header__inner {
  display: flex; align-items: center; justify-content: space-between;
  min-height: var(--header-h);
}
.site-header__brand {
  display: flex; align-items: center; gap: var(--space-3);
  position: relative;
}
.site-header__brand img {
  height: 28px; width: auto;
}

/* === NAV === */
.site-nav { display: flex; align-items: center; gap: var(--space-7); }
.site-nav__list {
  display: flex; align-items: center; gap: var(--space-1);
  list-style: none; padding: 0; margin: 0;
}
.site-nav__link {
  position: relative;
  display: inline-flex; align-items: center; gap: 6px;
  padding: 9px 12px;
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  font-weight: 500;
  letter-spacing: -0.005em;
  color: var(--color-ink);
  border-radius: var(--radius-sm);
  transition: color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}
.site-nav__link::after {
  content: '';
  position: absolute;
  left: 12px; right: 12px; bottom: 4px;
  height: 1px;
  background: var(--color-primary);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--t-med) var(--ease);
}
.site-nav__link:hover { color: var(--color-primary); }
.site-nav__link:hover::after { transform: scaleX(1); }
.site-nav__link.is-active { color: var(--color-primary); }
.site-nav__link.is-active::after { transform: scaleX(1); }
.site-nav__link svg { opacity: .55; transition: transform var(--t-fast) var(--ease); }
.site-nav__has-dropdown:hover .site-nav__link svg,
.site-nav__has-dropdown:focus-within .site-nav__link svg { transform: rotate(180deg); }

/* === DROPDOWN — white card with violet hover === */
.site-nav__has-dropdown { position: relative; }
.dropdown {
  position: absolute; top: calc(100% + 8px); left: -8px;
  min-width: 380px;
  background: var(--color-paper);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: var(--space-2);
  opacity: 0; visibility: hidden; transform: translateY(-6px);
  transition: opacity var(--t-fast) var(--ease), transform var(--t-fast) var(--ease), visibility var(--t-fast);
}
.dropdown::before {
  content: '';
  position: absolute;
  top: -5px; left: 22px;
  width: 8px; height: 8px;
  background: var(--color-paper);
  border-left: 1px solid var(--color-border);
  border-top: 1px solid var(--color-border);
  transform: rotate(45deg);
}
.site-nav__has-dropdown:hover .dropdown,
.site-nav__has-dropdown:focus-within .dropdown,
.site-nav__has-dropdown.is-open .dropdown {
  opacity: 1; visibility: visible; transform: translateY(0);
}
.dropdown__item {
  display: flex; gap: var(--space-3); align-items: flex-start;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
  color: var(--color-ink);
  position: relative;
  transition: background var(--t-fast) var(--ease);
}
.dropdown__item:hover { background: var(--color-bg-soft); color: var(--color-ink); }
.dropdown__icon {
  flex: 0 0 auto;
  width: 36px; height: 36px;
  display: grid; place-items: center;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 18px;
  transition: border-color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}
.dropdown__item:hover .dropdown__icon {
  background: var(--color-primary-50);
  border-color: var(--color-primary);
}
.dropdown__text { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.dropdown__title {
  font-weight: 600;
  font-size: var(--fs-sm);
  color: var(--color-ink);
  letter-spacing: -0.005em;
}
.dropdown__sub {
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  color: var(--color-ink-3);
  letter-spacing: 0;
  text-transform: none;
}
.dropdown__all {
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: var(--tracking-mono);
  color: var(--color-primary);
  border-top: 1px solid var(--color-border);
  margin-top: var(--space-2);
  transition: color var(--t-fast) var(--ease);
}
.dropdown__all::after { content: ' →'; transition: transform var(--t-fast) var(--ease); }
.dropdown__all:hover { color: var(--color-primary-dark); }
.dropdown__all:hover::after { transform: translateX(4px); display: inline-block; }

/* === Header CTAs === */
.site-nav__cta { display: flex; gap: var(--space-2); align-items: center; }

/* === MOBILE NAV TOGGLE === */
.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  flex-direction: column; gap: 5px;
  align-items: center; justify-content: center;
  border-radius: var(--radius-sm);
}
.nav-toggle span {
  display: block; width: 22px; height: 1.5px;
  background: var(--color-ink);
  border-radius: 1px;
  transition: transform var(--t-fast) var(--ease), opacity var(--t-fast);
}
.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); }

@media (max-width: 960px) {
  .nav-toggle { display: flex; }
  .site-nav {
    position: fixed; inset: var(--header-h) 0 0 0;
    background: var(--color-bg);
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-8);
    gap: var(--space-3);
    overflow-y: auto;
    transform: translateX(100%);
    transition: transform var(--t-med) var(--ease-out);
    border-left: 1px solid var(--color-border);
  }
  .site-nav.is-open { transform: translateX(0); }
  .site-nav__list { flex-direction: column; align-items: stretch; gap: 0; }
  .site-nav__link {
    padding: var(--space-4) 0;
    font-size: var(--fs-xl);
    font-weight: 600;
    border-bottom: var(--rule-soft);
    border-radius: 0;
    letter-spacing: var(--tracking-tight);
  }
  .site-nav__link::after { display: none; }
  .dropdown {
    position: static;
    opacity: 1; visibility: visible; transform: none;
    box-shadow: none; border: 0; padding: var(--space-2) 0 var(--space-3) var(--space-4);
    min-width: 0;
    background: transparent;
    display: none;
  }
  .dropdown::before { display: none; }
  .site-nav__has-dropdown.is-open .dropdown { display: block; }
  .site-nav__cta {
    padding-top: var(--space-6);
    margin-top: var(--space-4);
    border-top: var(--rule-soft);
  }
  .site-nav__cta .btn { flex: 1; justify-content: center; }
}

/* ============================================================================
   FOOTER — light celeste with subtle cyan/violet washes, ink text
   ============================================================================ */
.site-footer {
  margin-top: var(--space-32);
  background: var(--color-bg-soft);
  color: var(--color-ink-2);
  position: relative;
  overflow: hidden;
  border-top: var(--rule-soft);
}
.site-footer::before {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(900px 500px at 100% 0%, rgba(0,180,219,.10), transparent 60%),
    radial-gradient(700px 400px at 0% 100%, rgba(89,33,255,.06), transparent 55%);
  pointer-events: none;
}
.site-footer::after {
  /* Subtle dot grid for technical continuity */
  content: '';
  position: absolute; inset: 0;
  background-image: radial-gradient(circle at 1px 1px, rgba(10,18,24,.04) 1px, transparent 0);
  background-size: 24px 24px;
  pointer-events: none;
}
.site-footer__top {
  position: relative;
  display: grid;
  grid-template-columns: 1.6fr repeat(4, 1fr);
  gap: var(--space-12);
  padding: var(--space-20) var(--space-8) var(--space-12);
  max-width: var(--container-max);
  margin: 0 auto;
  z-index: 1;
}
.site-footer__brand img {
  width: 140px;
  height: auto;
  margin-bottom: var(--space-5);
  /* No invert — keep original logo on light background */
}
.site-footer__pitch {
  font-size: var(--fs-sm);
  color: var(--color-ink-2);
  margin-bottom: var(--space-5);
  max-width: 32ch;
  line-height: 1.6;
}
.site-footer__contact {
  display: flex; flex-direction: column; gap: var(--space-1);
  font-size: var(--fs-sm);
  font-family: var(--font-mono);
}
.site-footer__contact a {
  color: var(--color-ink-2);
  transition: color var(--t-fast) var(--ease);
}
.site-footer__contact a:hover { color: var(--color-primary); }

.site-footer__title {
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: var(--tracking-mono);
  color: var(--color-primary);
  margin-bottom: var(--space-5);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-border);
}
.site-footer__col ul {
  list-style: none; padding: 0;
  display: flex; flex-direction: column; gap: var(--space-2);
}
.site-footer__col a {
  font-size: var(--fs-sm);
  color: var(--color-ink-2);
  transition: color var(--t-fast) var(--ease), padding-left var(--t-fast) var(--ease);
  display: inline-flex;
  align-items: center;
}
.site-footer__col a:hover {
  color: var(--color-primary);
  padding-left: 4px;
}

.site-footer__bottom {
  position: relative;
  z-index: 1;
  display: flex; justify-content: space-between; align-items: center;
  padding: var(--space-5) var(--space-8);
  border-top: 1px solid var(--color-border);
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  text-transform: uppercase;
  letter-spacing: var(--tracking-mono);
  color: var(--color-ink-3);
  max-width: var(--container-max);
  margin: 0 auto;
}

@media (max-width: 1100px) {
  .site-footer__top { grid-template-columns: 1fr 1fr 1fr; }
  .site-footer__brand { grid-column: 1 / -1; max-width: 480px; }
}
@media (max-width: 720px) {
  .site-footer__top {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
    padding: var(--space-14) var(--space-5) var(--space-10);
  }
  .site-footer__brand { grid-column: 1 / -1; }
  .site-footer__bottom {
    flex-direction: column;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-5);
    text-align: center;
  }
}

/* ============================================================================
   WHATSAPP FAB
   ============================================================================ */
.whatsapp-fab {
  position: fixed; right: 22px; bottom: 22px; z-index: 40;
  width: 52px; height: 52px;
  border-radius: 50%;
  background: var(--color-whatsapp);
  color: #fff;
  display: grid; place-items: center;
  box-shadow: 0 18px 40px -12px rgba(37,211,102,.5), 0 1px 0 rgba(255,255,255,.4) inset;
  transition: transform var(--t-fast) var(--ease), box-shadow var(--t-med) var(--ease);
}
.whatsapp-fab:hover {
  transform: translateY(-2px) scale(1.04);
  color: #fff;
  box-shadow: 0 24px 48px -12px rgba(37,211,102,.6), 0 1px 0 rgba(255,255,255,.4) inset;
}
.whatsapp-fab::before {
  content: '';
  position: absolute; inset: -6px;
  border-radius: 50%;
  border: 1px solid var(--color-whatsapp);
  opacity: 0;
  animation: fab-pulse 2.8s var(--ease) infinite;
}
@keyframes fab-pulse {
  0%   { opacity: 0; transform: scale(.92); }
  35%  { opacity: .35; }
  100% { opacity: 0; transform: scale(1.18); }
}

/* ============================================================================
   SECTIONS — restrained editorial spacing
   ============================================================================ */
.section { padding: var(--space-24) 0; position: relative; }
.section--soft  { background: var(--color-bg-soft); }
.section--muted { background: var(--color-bg-muted); }
.section--deep {
  background: var(--color-bg-deep);
  color: var(--color-paper);
}
.section--deep h1, .section--deep h2, .section--deep h3, .section--deep h4 { color: var(--color-paper); }
.section--deep p { color: var(--paper-70); }

/* Section head — left-aligned with hairline rule above + mono eyebrow */
.section__head {
  max-width: 760px;
  margin: 0 0 var(--space-12);
  padding-top: var(--space-5);
  border-top: var(--rule-soft);
  position: relative;
}

.section__eyebrow {
  display: inline-flex; align-items: center; gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: var(--tracking-mono);
  color: var(--color-primary);
  background: transparent;
  padding: 0;
  border-radius: 0;
  margin-bottom: var(--space-4);
}
.section__eyebrow::before {
  content: '';
  width: 24px; height: 1px;
  background: currentColor;
  display: inline-block;
}
.section--deep .section__eyebrow { color: var(--color-accent); }

.section__title {
  margin-bottom: var(--space-3);
  letter-spacing: var(--tracking-tight);
  line-height: 1.05;
}
.section__sub {
  font-size: var(--fs-lg);
  color: var(--color-ink-2);
  max-width: 60ch;
  line-height: 1.55;
}
.section--deep .section__sub { color: var(--paper-70); }

/* When section__head is centered (legacy alignment in some pages), respect it */
.section__head[style*="text-align: center"],
.section__head[style*="text-align:center"] {
  margin-left: auto; margin-right: auto;
  border-top-color: var(--color-border);
}
.section__head[style*="text-align: center"] .section__eyebrow,
.section__head[style*="text-align:center"] .section__eyebrow {
  justify-content: center;
}

.section--deep .section__head { border-top-color: var(--paper-12); }

@media (max-width: 720px) {
  .section { padding: var(--space-16) 0; }
  .section__head { margin-bottom: var(--space-10); padding-top: var(--space-4); }
}

/* ============================================================================
   GRIDS
   ============================================================================ */
.grid { display: grid; gap: var(--space-5); }
.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: 1000px) { .grid--3, .grid--4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; } }

/* ============================================================================
   PAGE-LOAD INTRO — staggered reveal of hero content
   ============================================================================ */
@keyframes intro-rise {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes rule-draw {
  from { transform: scaleX(0); }
  to   { transform: scaleX(1); }
}

/* ============================================================================
   REVEAL-ON-SCROLL — restrained fade + small rise
   ============================================================================ */
[data-reveal] {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity var(--t-slow) var(--ease-out), transform var(--t-slow) var(--ease-out);
  will-change: opacity, transform;
}
[data-reveal][data-revealed] {
  opacity: 1;
  transform: translateY(0);
}

.grid [data-reveal]:nth-child(1) { transition-delay: 0ms; }
.grid [data-reveal]:nth-child(2) { transition-delay: 60ms; }
.grid [data-reveal]:nth-child(3) { transition-delay: 120ms; }
.grid [data-reveal]:nth-child(4) { transition-delay: 180ms; }
.grid [data-reveal]:nth-child(5) { transition-delay: 240ms; }
.grid [data-reveal]:nth-child(6) { transition-delay: 300ms; }
.grid [data-reveal]:nth-child(7) { transition-delay: 360ms; }
.grid [data-reveal]:nth-child(8) { transition-delay: 420ms; }

/* Section heads draw a hairline rule in as they enter */
.section__head[data-reveal]::after {
  content: '';
  position: absolute;
  top: -1px; left: 0;
  width: 48px; height: 1px;
  background: var(--color-primary);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--t-slow) var(--ease-rule) 200ms;
}
.section__head[data-reveal][data-revealed]::after {
  transform: scaleX(1);
}