/* ============================================================
   REVONA CHEMICALS — custom design layer
   Sits on top of the compiled Tailwind build (css/tailwind.css)
   ============================================================ */

/* ---------- Fonts ---------- */
@font-face {
  font-family: 'Manrope';
  font-style: normal;
  font-weight: 200 800;
  font-display: swap;
  src: url('../assets/fonts/manrope-latin-var.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Manrope';
  font-style: normal;
  font-weight: 200 800;
  font-display: swap;
  src: url('../assets/fonts/manrope-latin-ext-var.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

/* ---------- Tokens ---------- */
:root {
  --ink: #06132c;
  --ink-deep: #040d1e;
  --brand: #03708d;
  --paper: #f7f8f9;
  --line: #e3e7ea;
  --line-dark: rgba(255, 255, 255, 0.14);
  --header-h: 76px;
  --topbar-h: 40px;
}

/* ---------- Base ---------- */
html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 12px);
  -webkit-text-size-adjust: 100%;
}
body {
  font-feature-settings: 'ss01' on, 'cv01' on;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
::selection {
  background: var(--brand);
  color: #fff;
}
:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 3px;
  border-radius: 1px;
}
img {
  user-select: none;
}

/* ---------- Layout helpers ---------- */
.shell {
  width: 100%;
  max-width: 1240px;
  margin-inline: auto;
  padding-inline: 1.25rem;
}
@media (min-width: 768px) {
  .shell { padding-inline: 2rem; }
}
@media (min-width: 1280px) {
  .shell { padding-inline: 2.5rem; }
}

/* Fine technical grid used on dark bands */
.tech-grid {
  background-image:
    linear-gradient(to right, rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 72px 72px;
}
.tech-grid-light {
  background-image:
    linear-gradient(to right, rgba(6, 19, 44, 0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(6, 19, 44, 0.05) 1px, transparent 1px);
  background-size: 72px 72px;
}

/* ---------- Type components ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  max-width: 100%;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--brand);
}
.eyebrow::before {
  content: '';
  width: 2rem;
  height: 1px;
  background: currentColor;
  flex: none;
}
.eyebrow--plain::before { display: none; }

.h-display {
  font-weight: 800;
  letter-spacing: -0.015em;
  line-height: 1.04;
  text-transform: uppercase;
}

/* ---------- Buttons ---------- */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.625rem;
  padding: 0.9375rem 1.75rem;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border: 1px solid transparent;
  border-radius: 2px;
  cursor: pointer;
  transition: background-color 0.35s cubic-bezier(0.22, 0.61, 0.36, 1),
    color 0.35s cubic-bezier(0.22, 0.61, 0.36, 1),
    border-color 0.35s cubic-bezier(0.22, 0.61, 0.36, 1),
    transform 0.35s cubic-bezier(0.22, 0.61, 0.36, 1);
  white-space: nowrap;
}
.btn .btn-arrow {
  transition: transform 0.35s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.btn:hover .btn-arrow,
.btn:focus-visible .btn-arrow {
  transform: translateX(4px);
}
.btn-primary {
  background: var(--ink);
  color: #fff;
}
.btn-primary:hover { background: var(--brand); }
.btn-brand {
  background: var(--brand);
  color: #fff;
}
.btn-brand:hover { background: #025a72; }
.btn-outline {
  border-color: rgba(6, 19, 44, 0.28);
  color: var(--ink);
  background: transparent;
}
.btn-outline:hover {
  border-color: var(--ink);
  background: var(--ink);
  color: #fff;
}
.btn-light {
  background: #fff;
  color: var(--ink);
}
.btn-light:hover { background: var(--brand); color: #fff; }
.btn-ghost-light {
  border-color: rgba(255, 255, 255, 0.35);
  color: #fff;
  background: transparent;
}
.btn-ghost-light:hover {
  background: #fff;
  border-color: #fff;
  color: var(--ink);
}
.btn-sm {
  padding: 0.6875rem 1.25rem;
  font-size: 0.75rem;
}
.btn.hidden {
  display: none;
}

/* ---------- Animated link underline ---------- */
.u-line {
  position: relative;
  display: inline-block;
}
.u-line::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -3px;
  width: 100%;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right center;
  transition: transform 0.4s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.u-line:hover::after,
.u-line:focus-visible::after {
  transform: scaleX(1);
  transform-origin: left center;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
}
.header-bar {
  background: #fff;
  border-bottom: 1px solid transparent;
  transition: box-shadow 0.4s cubic-bezier(0.22, 0.61, 0.36, 1),
    border-color 0.4s cubic-bezier(0.22, 0.61, 0.36, 1),
    background-color 0.4s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.site-header.is-scrolled .header-bar {
  border-bottom-color: var(--line);
  box-shadow: 0 12px 32px -18px rgba(6, 19, 44, 0.25);
}
.site-header.is-scrolled .header-inner {
  height: 64px;
}
.header-inner {
  height: var(--header-h);
  transition: height 0.4s cubic-bezier(0.22, 0.61, 0.36, 1);
  position: relative;
}
/* Centered primary nav (desktop): exactly centered in the header bar */
.main-nav-center { display: none; }
@media (min-width: 1024px) {
  .main-nav-center {
    display: flex; align-items: center; gap: 1.25rem;
    position: absolute; left: 50%; top: 50%;
    transform: translate(-50%, -50%);
    white-space: nowrap;
  }
}
@media (min-width: 1280px) {
  .main-nav-center { gap: 2rem; }
}
.nav-link {
  position: relative;
  padding: 0.375rem 0;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink);
  transition: color 0.3s ease;
}
.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  height: 2px;
  width: 100%;
  background: var(--brand);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.3s ease;
}
.nav-link:hover { color: var(--brand); }
.nav-link:hover::after { transform: scaleX(1); }
.nav-link[aria-current='page'] { color: var(--brand); }
.nav-link[aria-current='page']::after { transform: scaleX(1); }
.nav-link.btn-contact { background: #036c86; color: #fff; padding: 0.7rem 1.5rem; border-radius: 2px; transition: background 0.25s ease, color 0.25s ease; }
.nav-link.btn-contact::after { display: none; }
.nav-link.btn-contact:hover { background: #025a72; color: #fff; }
.nav-link.btn-contact[aria-current='page'] { background: #025a72; color: #fff; }
.mm-link.is-contact { color: #8fd6e6; }

/* ---------- Mobile menu ---------- */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 70;
  visibility: hidden;
  pointer-events: none;
  overflow: hidden;
}
.mobile-menu .mm-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(4, 13, 30, 0.55);
  opacity: 0;
  transition: opacity 0.4s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.mobile-menu .mm-panel {
  position: absolute;
  top: 0;
  right: 0;
  height: 100%;
  width: min(24rem, 92vw);
  background: var(--ink);
  transform: translateX(100%);
  transition: transform 0.5s cubic-bezier(0.22, 0.61, 0.36, 1);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}
.mobile-menu.is-open {
  visibility: visible;
  pointer-events: auto;
}
.mobile-menu.is-open .mm-backdrop { opacity: 1; }
.mobile-menu.is-open .mm-panel { transform: translateX(0); }
.mm-link {
  display: flex;
  align-items: baseline;
  gap: 0.875rem;
  padding: 0.9375rem 0;
  border-bottom: 1px solid var(--line-dark);
  color: #fff;
  font-size: 1.0625rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.45s ease, transform 0.45s cubic-bezier(0.22, 0.61, 0.36, 1), color 0.3s ease;
}
.mm-link .mm-num {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--brand);
  color: #4e97aa;
}
.mm-link:hover { color: #8fbcc9; }
.mobile-menu.is-open .mm-link {
  opacity: 1;
  transform: translateY(0);
}
.mobile-menu.is-open .mm-link:nth-child(1) { transition-delay: 0.10s; }
.mobile-menu.is-open .mm-link:nth-child(2) { transition-delay: 0.15s; }
.mobile-menu.is-open .mm-link:nth-child(3) { transition-delay: 0.20s; }
.mobile-menu.is-open .mm-link:nth-child(4) { transition-delay: 0.25s; }
.mobile-menu.is-open .mm-link:nth-child(5) { transition-delay: 0.30s; }
.mobile-menu.is-open .mm-link:nth-child(6) { transition-delay: 0.35s; }
.mobile-menu.is-open .mm-link:nth-child(7) { transition-delay: 0.40s; }
body.menu-locked { overflow: hidden; }

/* Hamburger */
.burger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--ink);
  transition: transform 0.35s cubic-bezier(0.22, 0.61, 0.36, 1), opacity 0.3s ease;
}
.burger span + span { margin-top: 5px; }
.burger[aria-expanded='true'] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger[aria-expanded='true'] span:nth-child(2) { opacity: 0; }
.burger[aria-expanded='true'] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Scroll reveal ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.8s ease, transform 0.8s cubic-bezier(0.22, 0.61, 0.36, 1);
  transition-delay: var(--d, 0ms);
}
[data-reveal].is-in {
  opacity: 1;
  transform: none;
}
[data-reveal='fade'] {
  transform: none;
}
/* image curtain reveal */
.img-reveal {
  position: relative;
  overflow: hidden;
}
.img-reveal::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--ink);
  transform: scaleY(1);
  transform-origin: top;
  transition: transform 0.9s cubic-bezier(0.65, 0.05, 0.36, 1);
  transition-delay: var(--d, 0ms);
  pointer-events: none;
}
.img-reveal.is-in::after {
  transform: scaleY(0);
  transform-origin: top;
}
.img-reveal img {
  transform: scale(1.06);
  transition: transform 1.4s cubic-bezier(0.22, 0.61, 0.36, 1);
  transition-delay: var(--d, 0ms);
}
.img-reveal.is-in img { transform: scale(1); }

/* gentle zoom for framed imagery on hover */
.zoom-frame img {
  transition: transform 1.1s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.zoom-frame:hover img { transform: scale(1.045); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  [data-reveal], .img-reveal img, .zoom-frame img {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
  .img-reveal::after { display: none !important; }
  .mm-link { opacity: 1; transform: none; transition: none; }
}

/* ---------- Hero slider ---------- */
.hero-height {
  min-height: 620px;
  min-height: min(880px, calc(100svh - 116px));
}
.hero-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}
.hero-slide.is-active {
  opacity: 1;
}
.hero-slide img {
  transform: scale(1.06);
  transition: transform 7.5s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.hero-slide.is-active img {
  transform: scale(1);
}
.hero-dot {
  height: 3px;
  width: 2rem;
  background: rgba(255, 255, 255, 0.28);
  border: 0;
  padding: 0;
  cursor: pointer;
  transition: width 0.4s cubic-bezier(0.22, 0.61, 0.36, 1), background-color 0.4s ease;
}
.hero-dot:hover { background: rgba(255, 255, 255, 0.55); }
.hero-dot.is-active {
  width: 3rem;
  background: #4e97aa;
}
@media (prefers-reduced-motion: reduce) {
  .hero-slide, .hero-slide img { transition: none; }
  .hero-slide img { transform: none; }
}

/* ---------- Cards / rows ---------- */
.cat-tile {
  position: relative;
  border: 1px solid var(--line);
  background: #fff;
  transition: border-color 0.4s ease, box-shadow 0.4s ease, transform 0.4s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.cat-tile:hover {
  border-color: rgba(3, 112, 141, 0.45);
  box-shadow: 0 24px 60px -30px rgba(6, 19, 44, 0.3);
  transform: translateY(-3px);
}
.row-link {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  width: 100%;
  padding: 1.125rem 0;
  border-bottom: 1px solid var(--line);
  transition: padding-left 0.35s cubic-bezier(0.22, 0.61, 0.36, 1), color 0.3s ease;
}
.row-link:hover { padding-left: 0.75rem; color: var(--brand); }
.row-link--dark { border-bottom-color: var(--line-dark); }
.row-link--dark:hover { color: #8fbcc9; }

/* ---------- Forms ---------- */
.field label {
  display: block;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink);
  margin-bottom: 0.5rem;
}
.field input,
.field select,
.field textarea {
  width: 100%;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 0.8125rem 1rem;
  font-size: 0.9375rem;
  color: var(--ink);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.field textarea { min-height: 8.5rem; resize: vertical; }
.field input::placeholder,
.field textarea::placeholder { color: #9aa3ad; }
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(3, 112, 141, 0.12);
}
.field--dark input,
.field--dark select,
.field--dark textarea {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.18);
  color: #fff;
}
.field--dark label { color: rgba(255, 255, 255, 0.72); }
.field--dark input:focus,
.field--dark textarea:focus,
.field--dark select:focus {
  border-color: #4e97aa;
  box-shadow: 0 0 0 3px rgba(78, 151, 170, 0.18);
}

/* ---------- Misc ---------- */
.num-tag {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--brand);
  font-variant-numeric: tabular-nums;
}
.divider-v { position: relative; }
.divider-v + .divider-v::before {
  content: '';
  position: absolute;
  left: 0;
  top: 15%;
  height: 70%;
  width: 1px;
  background: var(--line);
}
@media (max-width: 1023.98px) {
  .divider-v + .divider-v::before { display: none; }
}

.map-panel {
  background:
    radial-gradient(circle at 68% 42%, rgba(3, 112, 141, 0.16), transparent 42%),
    linear-gradient(to right, rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    #0b2340;
  background-size: auto, 56px 56px, 56px 56px, auto;
}
.map-roads {
  position: absolute;
  inset: 0;
  overflow: hidden;
  opacity: 0.5;
}
.map-roads i {
  position: absolute;
  background: rgba(255, 255, 255, 0.09);
}

@keyframes pin-pulse {
  0% { transform: scale(0.6); opacity: 0.8; }
  100% { transform: scale(2.1); opacity: 0; }
}
.pin-pulse::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 9999px;
  background: rgba(78, 151, 170, 0.55);
  animation: pin-pulse 2.4s ease-out infinite;
}

/* CMS-rendered rich text */
.prose-cms h2 { font-size: 1rem; font-weight: 800; letter-spacing: -0.01em; color: var(--ink); margin-top: 1.5rem; margin-bottom: 0.75rem; }
.prose-cms p { margin-bottom: 1rem; }
.prose-cms ul { list-style: disc; padding-left: 1.25rem; margin-bottom: 1rem; }
.prose-cms ol { list-style: decimal; padding-left: 1.25rem; margin-bottom: 1rem; }
.prose-cms li { margin-bottom: 0.35rem; }
.prose-cms a { color: var(--brand); text-decoration: underline; }
.prose-cms table { width: 100%; border-collapse: collapse; margin-bottom: 1rem; }
.prose-cms th, .prose-cms td { border: 1px solid var(--line); padding: 0.6rem 0.8rem; text-align: left; }
.prose-cms th { background: var(--paper); font-weight: 700; }
.prose-cms img { max-width: 100%; height: auto; border-radius: 2px; }

/* ---------- Captcha ---------- */
.captcha-box { display: flex; gap: 0.75rem; align-items: stretch; flex-wrap: wrap; }
.captcha-q {
  display: inline-flex; align-items: center;
  background: var(--ink); color: #fff;
  font-weight: 800; font-size: 1.4rem; letter-spacing: 0.12em;
  padding: 0.65rem 1.5rem; border-radius: 2px; white-space: nowrap;
  box-shadow: inset 0 -3px 0 rgba(255, 255, 255, 0.15);
}
.captcha-box input { flex: 1 1 200px; }

/* ---------- Back to top ---------- */
.to-top {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  z-index: 60;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  border-radius: 2px;
  background: var(--brand);
  color: #fff;
  border: 1px solid var(--brand);
  box-shadow: 0 10px 28px rgba(3, 80, 100, 0.35);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s, background 0.2s ease;
}
.to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: none;
}
.to-top:hover { background: #025a72; border-color: #025a72; }
.to-top:focus-visible { outline: 2px solid #fff; outline-offset: 2px; }
@media (prefers-reduced-motion: reduce) {
  .to-top { transition: none; transform: none; }
}

/* ---------- Product FAQ accordion ---------- */
.faq-item > summary { list-style: none; }
.faq-item > summary::-webkit-details-marker { display: none; }
.faq-item > summary:focus-visible { outline: 2px solid var(--brand-600, #0f62fe); outline-offset: 2px; }
.faq-item .faq-icon { transition: transform .2s ease; }
.faq-item[open] .faq-icon { transform: rotate(45deg); }
@media (prefers-reduced-motion: reduce) {
  .faq-item .faq-icon { transition: none; }
}