/* ════════════════════════════════════════════════
   PRARTHANA INDUSTRIES — Global Stylesheet
   ════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;500;600;700;800&family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;1,9..40,300&display=swap');

:root {
  --saffron: #FF671F;
  --india-green: #046A38;
  --white: #FFFFFF;
  --steel: #1A1A1A;
  --light-grey: #F5F5F5;
  --silver: #C7C7C7;
  --mid-grey: #6E6E6E;
  --off-white: #FAFAF8;
  --border: rgba(26,26,26,0.10);
  --font-display: 'Syne', sans-serif;
  --font-body: 'DM Sans', sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  background: var(--white);
  color: var(--steel);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

::-webkit-scrollbar { width: 3px; }
::-webkit-scrollbar-track { background: var(--light-grey); }
::-webkit-scrollbar-thumb { background: var(--saffron); }

img { display: block; max-width: 100%; }

/* ─── NAVBAR ─── */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 200;
  height: 72px;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 56px;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow 0.3s ease;
}
.navbar.scrolled { box-shadow: 0 2px 40px rgba(0,0,0,0.07); }

.nav-brand {
  display: flex; align-items: center; gap: 14px;
  text-decoration: none; color: var(--steel);
  flex-shrink: 0;
}
.nav-logo-img {
  height: 44px; width: auto;
  object-fit: contain;
}
.nav-brand-text { }
.nav-brand-name {
  font-family: var(--font-display); font-weight: 700; font-size: 16px;
  letter-spacing: -0.3px; line-height: 1.1; color: var(--steel);
}
.nav-brand-sub {
  font-size: 10px; color: var(--mid-grey); letter-spacing: 1.8px;
  text-transform: uppercase; margin-top: 2px;
}

.nav-links {
  display: flex; align-items: center; gap: 40px;
  list-style: none;
}
.nav-links a {
  text-decoration: none; color: var(--steel);
  font-size: 14px; font-weight: 400; letter-spacing: 0.1px;
  opacity: 0.65; transition: opacity 0.2s;
  position: relative;
}
.nav-links a::after {
  content: ''; position: absolute; bottom: -4px; left: 0; right: 0;
  height: 1.5px; background: var(--saffron);
  transform: scaleX(0); transition: transform 0.25s ease;
  transform-origin: left;
}
.nav-links a:hover, .nav-links a.active { opacity: 1; }
.nav-links a:hover::after, .nav-links a.active::after { transform: scaleX(1); }

.nav-cta {
  background: var(--steel) !important; color: var(--white) !important;
  padding: 11px 24px !important; border-radius: 7px !important;
  opacity: 1 !important; font-weight: 500 !important;
  transition: background 0.2s !important;
}
.nav-cta::after { display: none !important; }
.nav-cta:hover { background: var(--saffron) !important; }

.nav-hamburger {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 4px;
}
.nav-hamburger span {
  display: block; width: 22px; height: 1.5px;
  background: var(--steel); transition: all 0.3s;
}

/* ─── MOBILE NAV ─── */
.mobile-nav-overlay {
  display: none; position: fixed; inset: 0; z-index: 300;
  background: var(--white);
  flex-direction: column; padding: 88px 32px 48px;
}
.mobile-nav-overlay.open { display: flex; }
.mobile-nav-close {
  position: absolute; top: 22px; right: 28px;
  background: none; border: none; font-size: 26px; cursor: pointer; color: var(--steel);
}
.mobile-nav-links { list-style: none; flex: 1; }
.mobile-nav-links li a {
  display: block; padding: 14px 0;
  font-family: var(--font-display); font-size: 32px; font-weight: 700;
  text-decoration: none; color: var(--steel);
  border-bottom: 1px solid var(--border);
  transition: color 0.2s;
}
.mobile-nav-links li a:hover { color: var(--saffron); }

/* ─── TRICOLOR LINE ─── */
.tricolor-bar {
  height: 3px;
  background: linear-gradient(90deg, var(--saffron) 33.33%, var(--white) 33.33% 66.66%, var(--india-green) 66.66%);
}
.tricolor-divider {
  height: 2px;
  background: linear-gradient(90deg, var(--saffron) 33.33%, transparent 33.33% 66.66%, var(--india-green) 66.66%);
  margin: 48px 0;
  opacity: 0.4;
}

/* ─── BUTTONS ─── */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 15px 32px; border-radius: 8px;
  font-family: var(--font-body); font-size: 15px; font-weight: 500;
  text-decoration: none; border: none; cursor: pointer;
  transition: all 0.25s ease; letter-spacing: 0.2px;
}
.btn-primary { background: var(--saffron); color: var(--white); }
.btn-primary:hover {
  background: #e55a18; transform: translateY(-2px);
  box-shadow: 0 10px 32px rgba(255,103,31,0.35);
}
.btn-dark { background: var(--steel); color: var(--white); }
.btn-dark:hover { background: #2d2d2d; transform: translateY(-2px); box-shadow: 0 10px 32px rgba(0,0,0,0.2); }
.btn-outline-white {
  background: transparent; color: rgba(255,255,255,0.85);
  border: 1.5px solid rgba(255,255,255,0.25);
}
.btn-outline-white:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.5);
  color: var(--white);
}
.btn-white { background: var(--white); color: var(--steel); }
.btn-white:hover { background: var(--saffron); color: var(--white); box-shadow: 0 10px 32px rgba(255,103,31,0.35); transform: translateY(-2px); }
.btn-arrow { font-size: 17px; transition: transform 0.2s; }
.btn:hover .btn-arrow { transform: translateX(4px); }

/* ─── SECTION LABELS ─── */
.eyebrow {
  display: flex; align-items: center; gap: 12px; margin-bottom: 16px;
}
.eyebrow-line { width: 24px; height: 1.5px; background: var(--saffron); flex-shrink: 0; }
.eyebrow-text {
  font-size: 11px; letter-spacing: 3px; text-transform: uppercase;
  color: var(--mid-grey); font-weight: 600;
}
.eyebrow-text-light { color: rgba(255,255,255,0.45); }

.section-title {
  font-family: var(--font-display);
  font-size: clamp(32px, 3.8vw, 54px);
  font-weight: 700; line-height: 1.05;
  letter-spacing: -1.5px; color: var(--steel);
}
.section-title-white { color: var(--white); }
.section-title .accent { color: var(--saffron); }
.section-title .green { color: var(--india-green); }
.section-body {
  font-size: 17px; line-height: 1.75; color: var(--mid-grey);
  font-weight: 300; max-width: 520px;
}
.section-body-white { color: rgba(255,255,255,0.55); }

/* ─── REVEAL ANIMATION ─── */
.reveal {
  opacity: 0; transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-d1 { transition-delay: 0.1s; }
.reveal-d2 { transition-delay: 0.2s; }
.reveal-d3 { transition-delay: 0.3s; }
.reveal-d4 { transition-delay: 0.4s; }

/* ─── FOOTER ─── */
.footer {
  background: #0D0D0D; color: var(--white);
  padding: 80px 56px 40px; position: relative;
}
.footer::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--saffron) 33.33%, rgba(255,255,255,0.06) 33.33% 66.66%, var(--india-green) 66.66%);
}
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 60px; margin-bottom: 56px;
}
.footer-logo-img { height: 48px; width: auto; margin-bottom: 16px; }
.footer-brand-name {
  font-family: var(--font-display); font-size: 16px; font-weight: 700;
  color: var(--white); margin-bottom: 4px;
}
.footer-brand-sub { font-size: 11px; color: rgba(255,255,255,0.35); letter-spacing: 1.5px; text-transform: uppercase; }
.footer-brand-desc {
  font-size: 14px; color: rgba(255,255,255,0.38); line-height: 1.7;
  margin: 18px 0 24px;
}
.footer-socials { display: flex; gap: 10px; }
.social-btn {
  width: 36px; height: 36px; border-radius: 7px;
  background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.08);
  display: flex; align-items: center; justify-content: center;
  text-decoration: none; color: rgba(255,255,255,0.45);
  font-size: 13px; font-weight: 700; transition: all 0.2s;
  flex-shrink: 0;
}
.social-btn:hover { background: var(--saffron); border-color: var(--saffron); color: var(--white); }
.footer-col-title {
  font-size: 10px; letter-spacing: 2.5px; text-transform: uppercase;
  color: rgba(255,255,255,0.28); margin-bottom: 20px; font-weight: 600;
}
.footer-links { list-style: none; display: flex; flex-direction: column; gap: 12px; }
.footer-links a {
  text-decoration: none; color: rgba(255,255,255,0.48);
  font-size: 14px; transition: color 0.2s;
}
.footer-links a:hover { color: var(--saffron); }
.footer-links li { color: rgba(255,255,255,0.38); font-size: 14px; line-height: 1.7; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.07);
  padding-top: 28px;
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 12px;
}
.footer-copy { font-size: 13px; color: rgba(255,255,255,0.28); }
.footer-copy span { color: rgba(255,255,255,0.45); }
.footer-badges { display: flex; gap: 12px; }
.footer-badge {
  padding: 5px 12px; border: 1px solid rgba(255,255,255,0.1);
  border-radius: 4px; font-size: 10px; letter-spacing: 1.2px;
  text-transform: uppercase; color: rgba(255,255,255,0.28);
}

/* ─── WHATSAPP BTN ─── */
.whatsapp-btn {
  display: inline-flex; align-items: center; gap: 10px;
  background: #25D366; color: var(--white);
  padding: 13px 26px; border-radius: 8px;
  font-size: 14px; font-weight: 600; text-decoration: none;
  transition: all 0.25s ease;
}
.whatsapp-btn:hover {
  background: #1ebe5d; transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(37,211,102,0.35);
}

/* ─── RESPONSIVE ─── */
@media (max-width: 1100px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
}
@media (max-width: 900px) {
  .navbar { padding: 0 24px; }
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
  .footer { padding: 60px 24px 32px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 640px) {
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}