/* ============================================================
   Indian Welders – Main Stylesheet
   Design: Industrial steel & fire palette
   Fonts: Rajdhani (display) + Inter (body)
   ============================================================ */

/* ---------- RESET & BASE ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --steel:      #1a1f2e;      /* near-black steel */
  --charcoal:   #2c3347;      /* card backgrounds */
  --ember:      #e85d04;      /* primary orange-fire accent */
  --ember-dark: #c44b00;
  --gold:       #f4a820;      /* secondary warm gold */
  --smoke:      #8a92a6;      /* muted text */
  --ice:        #eef0f5;      /* light section bg */
  --white:      #ffffff;
  --green:      #25d366;      /* WhatsApp */

  --fs-xs:   0.75rem;
  --fs-sm:   0.875rem;
  --fs-base: 1rem;
  --fs-md:   1.125rem;
  --fs-lg:   1.5rem;
  --fs-xl:   2rem;
  --fs-2xl:  2.75rem;
  --fs-3xl:  3.75rem;

  --radius: 6px;
  --radius-lg: 12px;
  --shadow: 0 4px 24px rgba(0,0,0,.18);
  --shadow-sm: 0 2px 8px rgba(0,0,0,.12);
  --transition: 0.25s ease;
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--white);
  color: var(--steel);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img { display: block; width: 100%; height: 100%; object-fit: cover; }

a { color: inherit; text-decoration: none; }

ul { list-style: none; }

h1, h2, h3, h4, h5 {
  font-family: 'Rajdhani', sans-serif;
  line-height: 1.2;
  font-weight: 700;
}

/* ---------- UTILITIES ---------- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 96px 0; }

.section-header {
  text-align: center;
  margin-bottom: 64px;
}
.section-header h2 { font-size: var(--fs-2xl); margin: 8px 0 16px; }
.section-header p { color: var(--smoke); max-width: 580px; margin: 0 auto; }

.eyebrow {
  display: inline-block;
  font-family: 'Rajdhani', sans-serif;
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ember);
  margin-bottom: 4px;
}

/* ---------- BUTTONS ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius);
  font-family: 'Rajdhani', sans-serif;
  font-weight: 700;
  font-size: var(--fs-md);
  letter-spacing: .04em;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: var(--ember);
  color: var(--white);
  border-color: var(--ember);
}
.btn-primary:hover { background: var(--ember-dark); border-color: var(--ember-dark); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(232,93,4,.35); }
.btn-ghost {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,.55);
}
.btn-ghost:hover { background: rgba(255,255,255,.12); border-color: var(--white); }
.btn-lg { padding: 15px 36px; font-size: var(--fs-lg); }
.btn-full { width: 100%; justify-content: center; }
.btn-whatsapp {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--green);
  color: var(--white);
  padding: 13px 26px;
  border-radius: var(--radius);
  font-family: 'Rajdhani', sans-serif;
  font-weight: 700;
  font-size: var(--fs-md);
  margin-top: 16px;
  width: 100%;
  justify-content: center;
  transition: all var(--transition);
}
.btn-whatsapp:hover { background: #1ebe5c; transform: translateY(-2px); }

/* ---------- HEADER ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 0;
  background: transparent;
  transition: background var(--transition), box-shadow var(--transition);
}
.site-header.scrolled {
  background: var(--steel);
  box-shadow: 0 2px 20px rgba(0,0,0,.35);
}
.header-inner {
  display: flex;
  align-items: center;
  gap: 32px;
  height: 72px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: 'Rajdhani', sans-serif;
  font-size: 1.35rem;
  color: var(--white);
}
.logo-icon { font-size: 1.6rem; }
.logo-text strong { color: var(--ember); }

.nav { margin-left: auto; }
.nav-list { display: flex; gap: 8px; }
.nav-link {
  padding: 8px 14px;
  color: rgba(255,255,255,.85);
  font-family: 'Rajdhani', sans-serif;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: .04em;
  border-radius: var(--radius);
  transition: color var(--transition);
}
.nav-link:hover, .nav-link.active { color: var(--ember); }

.header-cta { margin-left: 12px; padding: 9px 22px; font-size: 0.95rem; }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  margin-left: auto;
}
.hamburger span {
  display: block;
  width: 26px; height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: all var(--transition);
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- HERO ---------- */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-bg { position: absolute; inset: 0; }
.hero-img { width: 100%; height: 100%; object-fit: cover; transform: scale(1.04); animation: heroZoom 12s ease-in-out infinite alternate; }
@keyframes heroZoom { to { transform: scale(1); } }
.hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(26,31,46,.85) 0%, rgba(26,31,46,.55) 60%, rgba(232,93,4,.1) 100%);
}
.hero-content {
  position: relative;
  z-index: 1;
  max-width: 720px;
}
.hero-badge {
  display: inline-block;
  background: rgba(232,93,4,.25);
  border: 1px solid rgba(232,93,4,.55);
  color: var(--gold);
  padding: 6px 16px;
  border-radius: 100px;
  font-size: var(--fs-sm);
  font-family: 'Rajdhani', sans-serif;
  font-weight: 600;
  letter-spacing: .06em;
  margin-bottom: 20px;
}
.hero-title {
  font-size: clamp(2.8rem, 7vw, 5rem);
  color: var(--white);
  line-height: 1.05;
  margin-bottom: 18px;
}
.hero-title .accent { color: var(--ember); }
.hero-sub {
  color: rgba(255,255,255,.8);
  font-size: var(--fs-md);
  margin-bottom: 36px;
  letter-spacing: .04em;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 60px; }
.hero-strip {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
  border-top: 1px solid rgba(255,255,255,.15);
  padding-top: 28px;
}
.strip-item {
  display: flex;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,.8);
  font-size: var(--fs-sm);
  font-family: 'Rajdhani', sans-serif;
  font-weight: 600;
  letter-spacing: .04em;
}
.strip-icon { font-size: 1.1rem; }
.scroll-down {
  position: absolute;
  bottom: 36px; left: 50%;
  transform: translateX(-50%);
  color: rgba(255,255,255,.5);
  font-size: 1.6rem;
  animation: bounce 2s ease-in-out infinite;
  z-index: 1;
}
@keyframes bounce { 0%,100%{transform:translateX(-50%) translateY(0)} 50%{transform:translateX(-50%) translateY(8px)} }

/* ---------- TICKER ---------- */
.ticker-wrap {
  background: var(--ember);
  overflow: hidden;
  padding: 11px 0;
}
.ticker-track {
  display: flex;
  gap: 24px;
  width: max-content;
  animation: ticker 35s linear infinite;
}
.ticker-track span {
  color: var(--white);
  font-family: 'Rajdhani', sans-serif;
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: .06em;
  white-space: nowrap;
}
@keyframes ticker { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* ---------- SERVICES ---------- */
.services { background: var(--ice); }
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.service-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}
.service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.service-img-wrap { height: 190px; overflow: hidden; }
.service-img-wrap img { transition: transform 0.45s ease; }
.service-card:hover .service-img-wrap img { transform: scale(1.06); }
.service-body { padding: 22px 24px 26px; }
.service-icon { font-size: 1.8rem; margin-bottom: 10px; }
.service-body h3 { font-size: 1.25rem; margin-bottom: 8px; color: var(--steel); }
.service-body p { font-size: var(--fs-sm); color: var(--smoke); line-height: 1.6; }
.service-card--cta {
  background: var(--charcoal);
  display: flex;
  align-items: center;
}
.service-card--cta .service-body { color: var(--white); }
.service-card--cta h3 { color: var(--white); }
.service-card--cta p { color: rgba(255,255,255,.7); margin-bottom: 20px; }

/* ---------- GALLERY ---------- */
.gallery { background: var(--white); }
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: 240px 240px;
  gap: 16px;
}
.gallery-item {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
}
.gallery-item img { transition: transform 0.45s ease; }
.gallery-item:hover img { transform: scale(1.07); }
.gallery-item--wide { grid-column: span 2; }
.gallery-label {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  background: linear-gradient(to top, rgba(26,31,46,.85) 0%, transparent 100%);
  color: var(--white);
  font-family: 'Rajdhani', sans-serif;
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: .04em;
  padding: 40px 16px 14px;
  transform: translateY(6px);
  opacity: 0;
  transition: all var(--transition);
}
.gallery-item:hover .gallery-label { opacity: 1; transform: translateY(0); }

/* ---------- WHY US ---------- */
.why-us { background: var(--steel); color: var(--white); }
.why-us-inner {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 80px;
  align-items: start;
}
.why-us-left .eyebrow { color: var(--gold); }
.why-us-left h2 { font-size: var(--fs-2xl); color: var(--white); margin: 8px 0 20px; }
.why-us-intro { color: rgba(255,255,255,.7); margin-bottom: 32px; max-width: 400px; }

.feature {
  display: flex;
  gap: 20px;
  padding: 22px 0;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.feature:first-child { padding-top: 0; }
.feature-num {
  font-family: 'Rajdhani', sans-serif;
  font-size: 2rem;
  font-weight: 700;
  color: var(--ember);
  opacity: .5;
  line-height: 1;
  min-width: 42px;
}
.feature-body h4 { font-size: 1.15rem; color: var(--white); margin-bottom: 6px; }
.feature-body p { font-size: var(--fs-sm); color: rgba(255,255,255,.6); }

/* ---------- STATS ---------- */
.stats-bar { background: var(--ember); padding: 48px 0; }
.stats-inner {
  display: flex;
  justify-content: space-around;
  flex-wrap: wrap;
  gap: 32px;
  text-align: center;
}
.stat { display: flex; flex-direction: column; align-items: center; gap: 4px; }
.stat-num {
  font-family: 'Rajdhani', sans-serif;
  font-size: 3.2rem;
  font-weight: 700;
  color: var(--white);
  line-height: 1;
}
.stat-plus {
  font-family: 'Rajdhani', sans-serif;
  font-size: 2rem;
  font-weight: 700;
  color: rgba(255,255,255,.7);
}
.stat-label {
  font-size: var(--fs-sm);
  color: rgba(255,255,255,.8);
  font-weight: 500;
  letter-spacing: .04em;
}

/* ---------- CONTACT ---------- */
.contact { background: var(--ice); }
.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 56px;
  align-items: start;
}
.contact-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 20px 22px;
  margin-bottom: 16px;
  box-shadow: var(--shadow-sm);
}
.contact-icon { font-size: 1.5rem; margin-bottom: 6px; }
.contact-card h4 { font-size: 1rem; margin-bottom: 4px; color: var(--steel); }
.contact-card p { font-size: var(--fs-sm); color: var(--smoke); }
.link { color: var(--ember); font-weight: 500; font-size: var(--fs-sm); }
.link:hover { text-decoration: underline; }
.big-link { font-size: 1.25rem; font-family: 'Rajdhani', sans-serif; font-weight: 700; color: var(--ember); }

/* ---------- FORM ---------- */
.contact-form { background: var(--white); border-radius: var(--radius-lg); padding: 36px; box-shadow: var(--shadow-sm); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { display: flex; flex-direction: column; margin-bottom: 18px; }
.form-group label { font-family: 'Rajdhani', sans-serif; font-weight: 600; font-size: 0.9rem; color: var(--steel); margin-bottom: 6px; letter-spacing: .04em; }
.form-group input, .form-group select, .form-group textarea {
  padding: 12px 14px;
  border: 1.5px solid #d5d9e2;
  border-radius: var(--radius);
  font-family: 'Inter', sans-serif;
  font-size: var(--fs-sm);
  color: var(--steel);
  background: #fafafa;
  transition: border-color var(--transition);
  outline: none;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: var(--ember); background: var(--white); }
.form-group input.error, .form-group select.error { border-color: #e53e3e; }
textarea { resize: vertical; min-height: 100px; }
.form-note { font-size: var(--fs-xs); color: var(--smoke); margin-top: 10px; text-align: center; }
.form-success {
  margin-top: 14px;
  padding: 14px;
  background: #f0fff4;
  border: 1px solid #9ae6b4;
  border-radius: var(--radius);
  color: #276749;
  font-size: var(--fs-sm);
  text-align: center;
}

/* ---------- MAP ---------- */
.map-wrap { line-height: 0; }
.map-wrap iframe { display: block; }

/* ---------- FOOTER ---------- */
.footer { background: var(--steel); color: rgba(255,255,255,.7); padding: 64px 0 0; }
.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1.5fr;
  gap: 48px;
  padding-bottom: 48px;
}
.footer-brand .logo-text { font-family: 'Rajdhani', sans-serif; font-size: 1.25rem; color: var(--white); }
.footer-brand .logo-icon { font-size: 1.4rem; }
.footer-brand p { margin-top: 12px; font-size: var(--fs-sm); line-height: 1.7; }
.footer h5 { font-family: 'Rajdhani', sans-serif; font-size: 1rem; color: var(--white); letter-spacing: .06em; margin-bottom: 16px; }
.footer-links ul { display: flex; flex-direction: column; gap: 10px; }
.footer-links a { font-size: var(--fs-sm); transition: color var(--transition); }
.footer-links a:hover { color: var(--ember); }
.footer-contact p { margin-bottom: 8px; font-size: var(--fs-sm); }
.footer-contact a { transition: color var(--transition); }
.footer-contact a:hover { color: var(--ember); }
.wa-icon {
  display: inline-block;
  margin-top: 10px;
  padding: 8px 18px;
  background: var(--green);
  color: var(--white);
  border-radius: var(--radius);
  font-family: 'Rajdhani', sans-serif;
  font-weight: 700;
  font-size: 0.9rem;
  transition: background var(--transition);
}
.wa-icon:hover { background: #1ebe5c; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 20px 24px;
  text-align: center;
  font-size: var(--fs-xs);
  color: rgba(255,255,255,.35);
}

/* ---------- BACK TO TOP ---------- */
.back-top {
  position: fixed;
  bottom: 28px; right: 24px;
  width: 44px; height: 44px;
  background: var(--ember);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition), transform var(--transition);
  z-index: 999;
}
.back-top.visible { opacity: 1; pointer-events: auto; }
.back-top:hover { transform: translateY(-3px); }

/* ---------- RESPONSIVE ---------- */
@media (max-width: 1024px) {
  .why-us-inner { grid-template-columns: 1fr; gap: 48px; }
  .contact-inner { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .section-header { margin-bottom: 40px; }
  .section-header h2 { font-size: var(--fs-xl); }

  .nav { display: none; flex-direction: column; position: absolute; top: 72px; left: 0; right: 0; background: var(--steel); padding: 16px 24px 24px; }
  .nav.open { display: flex; }
  .nav-list { flex-direction: column; gap: 4px; }
  .nav-link { display: block; padding: 12px 0; }
  .hamburger { display: flex; }
  .header-cta { display: none; }

  .hero-actions { gap: 12px; }
  .hero-strip { gap: 16px; }

  .gallery-grid { grid-template-columns: 1fr 1fr; grid-template-rows: auto; }
  .gallery-item--wide { grid-column: span 2; }

  .form-row { grid-template-columns: 1fr; }
  .contact-form { padding: 24px; }

  .footer-inner { grid-template-columns: 1fr; gap: 32px; }
  .stats-inner { gap: 24px; }
}

@media (max-width: 480px) {
  .gallery-grid { grid-template-columns: 1fr; }
  .gallery-item--wide { grid-column: span 1; }
  .services-grid { grid-template-columns: 1fr; }
  .hero-title { font-size: 2.4rem; }
}

/* ---------- REDUCED MOTION ---------- */
@media (prefers-reduced-motion: reduce) {
  .hero-img, .ticker-track, .scroll-down { animation: none; }
  * { transition: none !important; }
}