/* ===================================================
   BHARAT OILS — Shared Components
   (Nav, Footer, Buttons, Cards)
   =================================================== */

/* ---- NAVIGATION ---- */

.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  background: transparent;
  transition: background 0.4s ease, box-shadow 0.4s ease;
}

/* Transparent state — over hero. Nav links become white. */
.site-nav:not(.site-nav--solid):not(.site-nav--scrolled) .nav-links a {
  color: rgba(255, 255, 255, 0.88);
}
.site-nav:not(.site-nav--solid):not(.site-nav--scrolled) .nav-links a:hover {
  color: var(--color-gold-light);
}
.site-nav:not(.site-nav--solid):not(.site-nav--scrolled) .nav-links a::after {
  background: var(--color-gold);
}
.site-nav:not(.site-nav--solid):not(.site-nav--scrolled) .nav-logo {
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-radius: var(--radius-pill);
  padding: 4px 14px 4px 8px;
}
.site-nav:not(.site-nav--solid):not(.site-nav--scrolled) .nav-hamburger span {
  background: white;
}

/* Scrolled state — frosted cream glass */
.site-nav--scrolled {
  background: rgba(250, 248, 242, 0.94);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: 0 1px 0 rgba(0,0,0,0.07), 0 4px 20px rgba(0,0,0,0.06);
}

/* Solid variant — for all inner pages */
.site-nav--solid {
  background: var(--color-white);
  box-shadow: 0 1px 0 rgba(0,0,0,0.08), var(--shadow-sm);
}

.site-nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.nav-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
}

/* Real logo image in nav */
.nav-logo__img {
  height: 52px;
  width: auto;
  display: block;
  object-fit: contain;
}

/* Fallback — hidden when image loads */
.nav-logo__mark { display: none; }
.nav-logo__text { display: none; }

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.nav-links a {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-charcoal);
  letter-spacing: 0.02em;
  transition: color var(--transition-fast);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-saffron);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.nav-links a:hover { color: var(--color-navy); }
.nav-links a:hover::after { transform: scaleX(1); }
.nav-links a.active { color: var(--color-saffron); font-weight: 600; }
.nav-links a.active::after { transform: scaleX(1); }

.nav-cta {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  cursor: pointer;
  padding: var(--space-2);
}

.nav-hamburger span {
  display: block;
  height: 2px;
  background: var(--color-charcoal);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-fast);
}

@media (max-width: 768px) {
  .nav-links, .nav-cta { display: none; }
  .nav-hamburger { display: flex; }

  .site-nav.nav-open .nav-links {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--color-cream);
    padding: var(--space-8) var(--space-6);
    gap: var(--space-6);
    border-top: 1px solid var(--color-divider);
    align-items: flex-start;
  }

  .site-nav.nav-open .nav-cta {
    display: flex;
    position: fixed;
    top: calc(var(--nav-height) + 300px);
    left: 0;
    right: 0;
    padding: var(--space-6);
    background: var(--color-cream);
    border-top: 1px solid var(--color-divider);
  }
}

/* ---- BUTTONS ---- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-8);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
}

.btn--primary {
  background: var(--color-saffron);
  color: var(--color-white);
  box-shadow: var(--shadow-saffron);
}

.btn--primary:hover {
  background: var(--color-saffron-dark);
  box-shadow: 0 6px 32px rgba(232,112,30,0.40);
  transform: translateY(-1px);
}

.btn--secondary {
  background: transparent;
  color: var(--color-navy);
  border: 1.5px solid var(--color-navy);
}

.btn--secondary:hover {
  background: var(--color-navy);
  color: var(--color-white);
}

.btn--outline-gold {
  background: transparent;
  color: var(--color-saffron);
  border: 1.5px solid var(--color-saffron);
}

.btn--outline-gold:hover {
  background: var(--color-saffron);
  color: var(--color-white);
}

.btn--ghost {
  background: transparent;
  color: var(--color-white);
  border: 1.5px solid rgba(255,255,255,0.5);
}

.btn--ghost:hover {
  background: rgba(255,255,255,0.1);
  border-color: var(--color-white);
}

.btn--outline-navy {
  background: transparent;
  color: var(--color-navy);
  border: 1.5px solid var(--color-navy);
  border-radius: var(--radius-pill);
}

.btn--outline-navy:hover {
  background: var(--color-navy);
  color: var(--color-white);
  transform: translateY(-1px);
  box-shadow: var(--shadow-navy);
}

.btn--lg {
  padding: var(--space-4) var(--space-10);
  font-size: var(--text-base);
}

.btn--sm {
  padding: var(--space-2) var(--space-5);
  font-size: var(--text-xs);
}

/* Where-to-Buy button — primary CTA throughout */
.btn--where-to-buy {
  background: linear-gradient(135deg, var(--color-saffron) 0%, var(--color-saffron-dark) 100%);
  color: var(--color-white);
  box-shadow: var(--shadow-saffron);
  padding: var(--space-4) var(--space-10);
  font-size: var(--text-base);
  border-radius: var(--radius-md);
}

.btn--where-to-buy:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 40px rgba(232,112,30,0.45);
}

/* ---- PRODUCT CARD ---- */

.product-card {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-divider);
  transition: box-shadow 0.35s ease, transform 0.35s ease, border-color 0.35s ease;
  display: flex;
  flex-direction: column;
}

.product-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-6px);
  border-color: rgba(201, 162, 0, 0.25);
}

.product-card__image {
  aspect-ratio: 3/4;
  overflow: hidden;
  position: relative;
  background: var(--color-cream);
}

.product-card__image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  padding: var(--space-4);
  transition: transform 0.5s ease;
}

.product-card:hover .product-card__image img {
  transform: scale(1.06);
}

.product-card__image-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
}

.product-card__accent {
  position: absolute;
  top: var(--space-4);
  left: var(--space-4);
  width: 4px;
  height: 40px;
  border-radius: 2px;
}

.product-card__body {
  padding: var(--space-6);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.product-card__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  color: var(--color-green-deep);
  margin-bottom: var(--space-2);
}

.product-card__tagline {
  font-size: var(--text-sm);
  color: var(--color-muted);
  margin-bottom: var(--space-4);
  font-style: italic;
}

.product-card__uses {
  font-size: var(--text-sm);
  color: var(--color-body);
  line-height: 1.6;
  flex: 1;
}

.product-card__footer {
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-divider);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.product-card__link {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-navy);
  letter-spacing: 0.03em;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  transition: gap var(--transition-fast), color var(--transition-fast);
}

.product-card__link:hover {
  color: var(--color-saffron);
  gap: var(--space-3);
}

/* ---- BLOG / RECIPE CARD ---- */

.article-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
  display: flex;
  flex-direction: column;
}

.article-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.article-card__image {
  aspect-ratio: 4/3;
  background: var(--color-gold-faint);
  overflow: hidden;
  position: relative;
}

.article-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.article-card:hover .article-card__image img {
  transform: scale(1.04);
}

.article-card__meta {
  position: absolute;
  top: var(--space-3);
  left: var(--space-3);
  display: flex;
  gap: var(--space-2);
}

.article-card__body {
  padding: var(--space-6);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.article-card__tag {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: var(--space-3);
}

.article-card__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  color: var(--color-green-deep);
  margin-bottom: var(--space-3);
  line-height: 1.3;
}

.article-card__excerpt {
  font-size: var(--text-sm);
  color: var(--color-muted);
  line-height: 1.7;
  flex: 1;
}

.article-card__footer {
  margin-top: var(--space-5);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.article-card__link {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-green-deep);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  transition: color var(--transition-fast), gap var(--transition-fast);
}

.article-card__link:hover { color: var(--color-gold); gap: var(--space-3); }

/* ---- PURITY METRIC ICON CARD ---- */

.purity-card {
  text-align: center;
  padding: var(--space-8) var(--space-6);
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.purity-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.purity-card__icon {
  width: 64px;
  height: 64px;
  background: var(--color-saffron-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-inline: auto;
  margin-bottom: var(--space-4);
  font-size: 28px;
  border: 2px solid rgba(232,112,30,0.2);
}

.purity-card__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  color: var(--color-navy);
  margin-bottom: var(--space-2);
}

.purity-card__desc {
  font-size: var(--text-sm);
  color: var(--color-muted);
  line-height: 1.6;
}

/* ---- FOOTER ---- */

.site-footer {
  background: var(--color-navy);
  color: rgba(255,255,255,0.8);
  padding-top: var(--space-20);
  padding-bottom: var(--space-10);
  /* Tricolor top border */
  border-top: 4px solid var(--color-saffron);
  position: relative;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(to right, var(--color-saffron) 33%, var(--color-white) 33% 66%, var(--color-green) 66%);
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: var(--space-12);
  padding-bottom: var(--space-16);
  border-bottom: 1px solid rgba(255,255,255,0.12);
}

@media (max-width: 1024px) {
  .site-footer__grid { grid-template-columns: 1fr 1fr; gap: var(--space-10); }
}

@media (max-width: 640px) {
  .site-footer__grid { grid-template-columns: 1fr; }
}

.footer-brand__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
  text-decoration: none;
}

/* Footer logo — uses real image, mark is hidden */
.footer-brand__mark { display: none; }

.footer-logo__img {
  height: 48px;
  width: auto;
  display: block;
  object-fit: contain;
  /* Invert to white since footer is navy */
  filter: brightness(0) invert(1);
  opacity: 0.92;
}

.footer-brand__name {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  color: var(--color-white);
  line-height: 1.1;
}

.footer-brand__name span {
  display: block;
  font-size: var(--text-xs);
  font-family: var(--font-body);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-gold);
}

.footer-brand__desc {
  font-size: var(--text-sm);
  line-height: 1.7;
  margin-bottom: var(--space-6);
}

.footer-certifications {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.footer-cert {
  padding: var(--space-1) var(--space-3);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: var(--radius-pill);
  font-size: var(--text-xs);
  letter-spacing: 0.05em;
  color: rgba(255,255,255,0.7);
}

.footer-col__title {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-saffron);
  margin-bottom: var(--space-5);
}

.footer-col__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-col__links a {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.7);
  transition: color var(--transition-fast);
}

.footer-col__links a:hover { color: var(--color-white); }

.footer-social {
  display: flex;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}

.footer-social__link {
  width: 38px;
  height: 38px;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.7);
  transition: all var(--transition-fast);
}

.footer-social__link:hover {
  background: var(--color-saffron);
  border-color: var(--color-saffron);
  color: var(--color-white);
}

.footer-whatsapp {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: #25D366;
  color: var(--color-white);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 600;
  transition: opacity var(--transition-fast);
}

.footer-whatsapp:hover { opacity: 0.9; }

.site-footer__bottom {
  padding-top: var(--space-8);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer-copyright {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.45);
}

.footer-legal {
  display: flex;
  gap: var(--space-6);
}

.footer-legal a {
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.45);
  transition: color var(--transition-fast);
}

.footer-legal a:hover { color: rgba(255,255,255,0.8); }

/* ---- WHERE TO BUY STRIP ---- */

.buy-strip {
  background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-navy-dark) 100%);
  padding: var(--space-16) 0;
  text-align: center;
  border-top: 3px solid var(--color-saffron);
}

.buy-strip__title {
  font-family: var(--font-display);
  font-size: clamp(var(--text-2xl), 3vw, var(--text-4xl));
  color: var(--color-white);
  margin-bottom: var(--space-4);
}

.buy-strip__sub {
  color: rgba(255,255,255,0.75);
  font-size: var(--text-lg);
  margin-bottom: var(--space-10);
}

.buy-channels {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.buy-channel {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-8);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.04em;
  transition: all var(--transition-base);
  border: 1.5px solid transparent;
}

.buy-channel--amazon {
  background: #FF9900;
  color: var(--color-charcoal);
}

.buy-channel--amazon:hover { background: #e68a00; transform: translateY(-2px); }

.buy-channel--flipkart {
  background: #2874F0;
  color: var(--color-white);
}

.buy-channel--flipkart:hover { background: #1a5fce; transform: translateY(-2px); }

.buy-channel--whatsapp {
  background: #25D366;
  color: var(--color-white);
}

.buy-channel--whatsapp:hover { background: #1da851; transform: translateY(-2px); }

.buy-channel--store {
  background: transparent;
  color: var(--color-white);
  border-color: rgba(255,255,255,0.5);
}

.buy-channel--store:hover {
  background: rgba(255,255,255,0.1);
  border-color: var(--color-white);
}

/* ---- PAGE HEADER (inner pages) ---- */

.page-header {
  padding-top: calc(var(--nav-height) + var(--space-20));
  padding-bottom: var(--space-16);
  background: linear-gradient(160deg, var(--color-navy-light) 0%, var(--color-cream) 100%);
  text-align: center;
  border-bottom: 3px solid var(--color-saffron);
}

.page-header h1 {
  margin-bottom: var(--space-4);
}

.page-header p,
.page-header__sub {
  font-size: var(--text-xl);
  color: var(--color-muted);
  max-width: 600px;
  margin-inline: auto;
  line-height: 1.7;
}