/* ============================================================
   Tatva Chemicals — premium enhancement layer
   Loaded AFTER the compiled Tailwind (styles.css). Brand-true
   navy + coral + amber, distinctive Archivo display type, and
   smooth, restrained motion.
   ============================================================ */

:root {
  --navy: #0a1f44;
  --navy-deep: #06152e;
  --navy-soft: #14305c;
  --coral: #f05d5e;
  --amber: #fea82f;
  --ink: #0f1729;
  --paper: #f7f9fb;
  --line: rgba(10, 31, 68, 0.10);
  --shadow-sm: 0 2px 8px rgba(10, 31, 68, 0.06);
  --shadow-md: 0 12px 30px -12px rgba(10, 31, 68, 0.22);
  --shadow-lg: 0 30px 60px -20px rgba(10, 31, 68, 0.35);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

.font-display {
  font-family: "Archivo", "Inter", system-ui, sans-serif;
  font-variation-settings: "wght" 800, "wdth" 100;
  letter-spacing: -0.02em;
}
.font-display-x {
  font-family: "Archivo", "Inter", sans-serif;
  font-variation-settings: "wght" 800, "wdth" 120;
  letter-spacing: -0.015em;
}

/* Eyebrow label */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.eyebrow::before {
  content: "";
  width: 1.75rem;
  height: 2px;
  background: var(--coral);
  display: inline-block;
}

/* ---------- Scroll reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
  will-change: opacity, transform;
}
.reveal.in {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ---------- Header scroll state ---------- */
.site-header {
  transition: background 0.4s var(--ease), box-shadow 0.4s var(--ease), backdrop-filter 0.4s var(--ease);
}
.site-header.scrolled {
  background: rgba(247, 249, 251, 0.92);
  backdrop-filter: saturate(150%) blur(12px);
  box-shadow: 0 1px 0 var(--line), var(--shadow-sm);
}

/* Over the dark hero (top): white logo + white nav. On scroll (light bar): colour logo + navy nav. */
.site-header .logo-color { display: none; }
.site-header .logo-white { display: block; }
.site-header.scrolled .logo-color { display: block; }
.site-header.scrolled .logo-white { display: none; }

.site-header .nav-links a { color: rgba(255, 255, 255, 0.9); transition: color 0.2s var(--ease); }
.site-header .nav-links a:hover { color: var(--amber); }
.site-header.scrolled .nav-links a { color: rgba(10, 31, 68, 0.82); }
.site-header.scrolled .nav-links a:hover { color: var(--coral); }

.site-header .ham { color: #fff; }
.site-header.scrolled .ham { color: var(--navy); }

/* Below lg the hamburger menu carries the CTA, so hide the header button.
   (.btn sets display:inline-flex, which would otherwise beat Tailwind's hidden.) */
@media (max-width: 1023.98px) {
  .site-header .header-cta { display: none !important; }
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
}
.hero__bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  transform: scale(1.08);
  animation: heroPan 22s ease-in-out infinite alternate;
  z-index: -2;
}
@keyframes heroPan {
  from { transform: scale(1.08) translate3d(0, 0, 0); }
  to   { transform: scale(1.16) translate3d(-2%, -2%, 0); }
}
.hero__veil {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(105deg, rgba(6, 21, 46, 0.94) 0%, rgba(10, 31, 68, 0.78) 45%, rgba(10, 31, 68, 0.35) 100%),
    radial-gradient(120% 80% at 85% 10%, rgba(240, 93, 94, 0.20), transparent 60%);
}
.grain::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.5;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.45'/%3E%3C/svg%3E");
}

/* Staggered hero entrance */
.hero-rise { opacity: 0; transform: translateY(26px); animation: rise 0.9s var(--ease) forwards; }
@keyframes rise { to { opacity: 1; transform: none; } }
.d1 { animation-delay: 0.05s; }
.d2 { animation-delay: 0.18s; }
.d3 { animation-delay: 0.31s; }
.d4 { animation-delay: 0.44s; }
.d5 { animation-delay: 0.57s; }

/* Scroll cue */
.scroll-cue span {
  display: block;
  width: 1px; height: 46px;
  margin: 0 auto;
  background: linear-gradient(var(--amber), transparent);
  animation: cue 2s ease-in-out infinite;
  transform-origin: top;
}
@keyframes cue { 0%,100% { transform: scaleY(0.4); opacity: 0.4; } 50% { transform: scaleY(1); opacity: 1; } }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 0.55rem;
  padding: 0.95rem 1.6rem; border-radius: 6px;
  font-weight: 600; font-size: 0.95rem; letter-spacing: 0.01em;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), background 0.25s var(--ease);
}
.btn svg { transition: transform 0.25s var(--ease); }
.btn:hover svg { transform: translateX(4px); }
.btn-primary { background: var(--coral); color: #fff; box-shadow: 0 10px 24px -10px rgba(240, 93, 94, 0.7); }
.btn-primary:hover { transform: translateY(-2px); background: #ef4748; }
.btn-ghost { background: rgba(255,255,255,0.08); color: #fff; border: 1px solid rgba(255,255,255,0.28); backdrop-filter: blur(4px); }
.btn-ghost:hover { transform: translateY(-2px); background: rgba(255,255,255,0.16); }
.btn-dark { background: var(--navy); color: #fff; }
.btn-dark:hover { transform: translateY(-2px); background: var(--navy-soft); }

/* ---------- Stats counters ---------- */
.stat-num { font-variant-numeric: tabular-nums; }

/* ---------- Product carousel ---------- */
.rail {
  display: flex; gap: 1.25rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  padding: 0.5rem 0 1.5rem;
  -ms-overflow-style: none; scrollbar-width: none;
}
.rail::-webkit-scrollbar { display: none; }
.p-card {
  scroll-snap-align: start;
  flex: 0 0 300px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease), border-color 0.4s var(--ease);
}
.p-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
.p-card__img { position: relative; aspect-ratio: 4/3; overflow: hidden; background: #eef1f5; }
.p-card__img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.7s var(--ease); }
.p-card:hover .p-card__img img { transform: scale(1.07); }
.chip {
  display: inline-flex; align-items: center; gap: 0.3rem;
  font-size: 0.7rem; font-weight: 600; letter-spacing: 0.02em;
  padding: 0.25rem 0.6rem; border-radius: 999px;
}
.rail-btn {
  width: 46px; height: 46px; border-radius: 999px;
  display: grid; place-items: center;
  border: 1px solid var(--line); background: #fff; color: var(--navy);
  transition: all 0.25s var(--ease);
}
.rail-btn:hover { background: var(--navy); color: #fff; transform: scale(1.06); }
.rail-btn:disabled { opacity: 0.35; cursor: not-allowed; }

/* Catalog row card: image stacked on mobile, beside the body on >= sm.
   (Defined here, not via Tailwind, because site.css loads after the compiled
   utilities and would otherwise override them.) */
.p-card--row { flex: none; }
.p-card--row .p-card__img { aspect-ratio: 4 / 3; }
@media (min-width: 640px) {
  .p-card--row { display: flex; }
  .p-card--row .p-card__img { aspect-ratio: auto; width: 40%; flex: none; }
  .p-card--row .p-card__body { width: 60%; }
}

/* ---------- Capability cards ---------- */
.cap {
  position: relative; padding: 2rem 1.75rem;
  border-radius: 16px; background: #fff;
  border: 1px solid var(--line);
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease);
  overflow: hidden;
}
.cap::before {
  content: ""; position: absolute; left: 0; top: 0; height: 3px; width: 0;
  background: linear-gradient(90deg, var(--coral), var(--amber));
  transition: width 0.5s var(--ease);
}
.cap:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.cap:hover::before { width: 100%; }
.cap__icon {
  width: 54px; height: 54px; border-radius: 13px;
  display: grid; place-items: center; margin-bottom: 1.1rem;
  background: linear-gradient(135deg, var(--navy), var(--navy-soft));
  color: #fff; box-shadow: var(--shadow-sm);
}
.cap__icon svg { width: 26px; height: 26px; }

/* ---------- Pin map ---------- */
.map-wrap { position: relative; }
.pin { position: absolute; transform: translate(-50%, -50%); cursor: pointer; }
.pin__dot {
  width: 14px; height: 14px; border-radius: 999px;
  background: var(--coral); border: 2px solid #fff;
  box-shadow: 0 2px 6px rgba(0,0,0,0.3); position: relative; z-index: 2;
}
.pin__pulse {
  position: absolute; inset: -6px; border-radius: 999px;
  background: var(--coral); opacity: 0.5; z-index: 1;
  animation: pulse 2.2s ease-out infinite;
}
@keyframes pulse { 0% { transform: scale(0.6); opacity: 0.55; } 100% { transform: scale(2.6); opacity: 0; } }
.pin__label {
  position: absolute; bottom: 150%; left: 50%; transform: translateX(-50%) translateY(6px);
  background: var(--navy); color: #fff; padding: 0.5rem 0.75rem; border-radius: 8px;
  font-size: 0.72rem; white-space: nowrap; opacity: 0; pointer-events: none;
  transition: all 0.3s var(--ease); box-shadow: var(--shadow-md); z-index: 5;
}
.pin__label b { color: var(--amber); }
.pin__label::after {
  content: ""; position: absolute; top: 100%; left: 50%; transform: translateX(-50%);
  border: 6px solid transparent; border-top-color: var(--navy);
}
.pin:hover .pin__label, .pin:focus .pin__label { opacity: 1; transform: translateX(-50%) translateY(0); }
.pin:hover .pin__dot { background: var(--amber); }

/* ---------- Industry tiles ---------- */
.ind {
  position: relative; border-radius: 16px; overflow: hidden;
  aspect-ratio: 3/4; display: flex; align-items: flex-end;
}
.ind img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform 0.7s var(--ease); }
.ind::after { content: ""; position: absolute; inset: 0; background: linear-gradient(to top, rgba(6,21,46,0.9) 8%, rgba(6,21,46,0.15) 60%, transparent); }
.ind:hover img { transform: scale(1.08); }
.ind__body { position: relative; z-index: 2; padding: 1.5rem; color: #fff; }

/* ---------- Marquee ---------- */
.marquee { overflow: hidden; }
.marquee__track { display: flex; gap: 3.5rem; width: max-content; animation: scrollx 28s linear infinite; }
@keyframes scrollx { to { transform: translateX(-50%); } }

/* utility */
.section { padding-top: 6rem; padding-bottom: 6rem; }
@media (max-width: 640px) { .section { padding-top: 3.5rem; padding-bottom: 3.5rem; } }
.maxw { max-width: 1200px; margin-inline: auto; padding-inline: 1.5rem; }
@media (min-width: 1024px) { .maxw { padding-inline: 2.5rem; } }