/* =====================================================
   Bansal Steel Traders — Design System
   ===================================================== */
:root {
  --bg: #f6f5f1;
  --bg-alt: #ecebe5;
  --ink: #0b1622;
  --ink-soft: #3a4453;
  --muted: #6b7384;
  --line: #dcdbd4;
  --primary: #001A40;
  /* SAIL red */
  --primary-700: #a52a16;
  --accent: #ffb400;
  /* hot steel yellow */
  --dark: #0b1622;
  --dark-2: #142233;
  --white: #fff;
  --shadow-sm: 0 1px 2px rgba(11, 22, 34, .06), 0 2px 8px rgba(11, 22, 34, .06);
  --shadow-md: 0 10px 30px rgba(11, 22, 34, .12);
  --radius: 14px;
  --radius-sm: 8px;
  --maxw: 1200px;
  --ease: cubic-bezier(.4, .0, .2, 1);
  --font-display: "Space Grotesk", system-ui, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%
}

body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

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

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

ul {
  list-style: none;
  margin: 0;
  padding: 0
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
  margin: 0 0 .5em;
  letter-spacing: -.01em
}

h1 {
  font-size: clamp(2.2rem, 5vw, 4.2rem);
  letter-spacing: -.02em
}

h2 {
  font-size: clamp(1.8rem, 3.4vw, 2.6rem)
}

h3 {
  font-size: 1.25rem
}

p {
  margin: 0 0 1em
}

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 1.25rem
}

.eyebrow {
  display: inline-block;
  font-family: var(--font-display);
  font-size: .8rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: .75rem;
  font-weight: 600
}

.eyebrow.light {
  color: var(--accent)
}

.section {
  padding: clamp(4rem, 8vw, 7rem) 0
}

.section-dark {
  background: var(--dark);
  color: #e9edf2
}

.section-dark h2,
.section-dark h3 {
  color: #fff
}

.section-muted {
  background: var(--bg-alt)
}

.section-head {
  max-width: 760px;
  margin: 0 auto 3rem;
  text-align: center
}

.section-head .sub {
  color: var(--muted);
  margin-top: .5rem
}

.muted-note {
  color: var(--muted);
  font-size: .9rem;
  text-align: center;
  margin-top: 1rem
}

.accent {
  color: #fff;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  padding: .95rem 1.6rem;
  border-radius: 999px;
  font-weight: 600;
  font-family: var(--font-display);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .2s var(--ease), background .2s var(--ease), box-shadow .2s var(--ease);
  font-size: .95rem;
  letter-spacing: .01em;
  line-height: 1;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 8px 24px -8px rgba(200, 54, 31, .6)
}

.btn-primary:hover {
  background: var(--primary-700);
  transform: translateY(-2px)
}

.btn-ghost {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, .4)
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, .1)
}

.btn-sm {
  padding: .55rem 1rem;
  font-size: .85rem
}

.btn-block {
  width: 100%
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(246, 245, 241, .85);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: .3s var(--ease)
}

.site-header.scrolled {
  background: rgba(246, 245, 241, .96);
  border-bottom-color: var(--line);
  box-shadow: var(--shadow-sm)
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .9rem 1.25rem
}

.brand {
  display: flex;
  align-items: center;
  gap: .75rem
}

.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), #7b1c0e);
  color: #fff;
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: .02em;
  font-size: .95rem;
  box-shadow: var(--shadow-sm)
}

.brand-text strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1rem;
  line-height: 1.1
}

.brand-text small {
  color: var(--muted);
  font-size: .72rem;
  letter-spacing: .08em;
  text-transform: uppercase
}

.primary-nav ul {
  display: flex;
  align-items: center;
  gap: 1.75rem
}

.primary-nav a {
  font-weight: 500;
  font-size: .92rem;
  color: var(--ink-soft);
  transition: color .2s;
}

.primary-nav a:hover {
  color: var(--primary)
}

.nav-toggle {
  display: none;
  background: none;
  border: 0;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: .5rem
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--ink);
  transition: .3s
}

.nav-toggle.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg)
}

.nav-toggle.open span:nth-child(2) {
  opacity: 0
}

.nav-toggle.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg)
}

/* Hero */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  color: #fff;
  overflow: hidden;
  isolation: isolate
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  transform: scale(1.05);
  animation: slow-zoom 20s ease-out forwards;
  z-index: -2
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(11, 22, 34, .92) 0%, rgba(11, 22, 34, .65) 50%, rgba(11, 22, 34, .55) 100%);
  z-index: -1
}

@keyframes slow-zoom {
  to {
    transform: scale(1)
  }
}

.hero-content {
    width: 80%;
    max-width: 100%;
    padding: 7rem 1.25rem 5rem;
}
.hero .eyebrow {
  color: var(--accent)
}

.hero h1 {
  color: #fff;
  margin-bottom: 1rem
}

.lede {
  font-size: clamp(1rem, 1.4vw, 1.2rem);
  color: #d6dde6;
  max-width: 640px;
  margin-bottom: 2rem
}

.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 3rem
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1.25rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, .15);
  max-width: 720px
}

.hero-stats li {
  display: flex;
  flex-direction: column
}

.hero-stats strong {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  color: #fff;
  line-height: 1
}

.hero-stats span {
  color: #a9b3c0;
  font-size: .78rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  margin-top: .4rem
}

/* Trust strip */
.trust-strip {
  background: var(--ink);
  color: #fff
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
  padding: 2rem 1.25rem
}

.trust-grid>div {
  display: flex;
  gap: .85rem;
  align-items: flex-start
}

.trust-num {
  font-family: var(--font-display);
  color: var(--accent);
  font-weight: 700
}

.trust-grid p {
  margin: 0;
  font-size: .92rem;
  color: #cfd6e0
}

/* About */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center
}

.about-media {
  position: relative
}

.about-media img {
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  aspect-ratio: 5/4;
  object-fit: cover
}

.badge-card {
  position: absolute;
  left: -20px;
  bottom: -30px;
  background: #fff;
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  min-width: 200px;
  border-left: 4px solid var(--primary)
}

.badge-card strong {
  font-family: var(--font-display);
  font-size: 2.4rem;
  color: var(--primary);
  line-height: 1
}

.badge-card span {
  color: var(--muted);
  font-size: .85rem;
  margin-top: .25rem
}

.check-list {
  margin: 1.5rem 0;
  display: grid;
  gap: .6rem
}

.check-list li {
  position: relative;
  padding-left: 1.75rem;
  color: var(--ink-soft)
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .55em;
  width: 14px;
  height: 8px;
  border-left: 2px solid var(--primary);
  border-bottom: 2px solid var(--primary);
  transform: rotate(-45deg)
}

/* Cards */
.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem
}

.card {
  background: rgba(255, 255, 255, .04);
  border: 1px solid rgba(255, 255, 255, .08);
  border-radius: var(--radius);
  padding: 2rem;
  transition: .3s var(--ease)
}

.card:hover {
  transform: translateY(-4px);
  background: rgba(255, 255, 255, .07);
  border-color: var(--accent)
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--primary), var(--primary-700));
  color: #fff;
  font-size: 1.4rem;
  margin-bottom: 1rem
}

.card p {
  color: #b6c0cc;
  margin: 0
}

/* Products / Tabs */
.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  justify-content: center;
  margin-bottom: 2rem
}

.tab {
  padding: .7rem 1.4rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: #fff;
  cursor: pointer;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: .9rem;
  color: var(--ink-soft);
  transition: .2s
}

.tab:hover {
  border-color: var(--primary);
  color: var(--primary)
}

.tab.is-active {
  background: var(--ink);
  color: #fff;
  border-color: var(--ink)
}

.tab-panel {
  display: none;
  animation: fade .3s var(--ease)
}

.tab-panel.is-active {
  display: block
}

@keyframes fade {
  from {
    opacity: 0;
    transform: translateY(8px)
  }

  to {
    opacity: 1;
    transform: none
  }
}

.table-wrap {
  overflow-x: auto;
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--line)
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 480px
}

caption {
  text-align: left;
  padding: 1.25rem 1.5rem .5rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem
}

th,
td {
  padding: .95rem 1.5rem;
  text-align: left;
  border-bottom: 1px solid var(--line);
  font-size: .95rem
}

th {
  background: var(--bg-alt);
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: .06em;
  font-size: .78rem;
  color: var(--ink-soft)
}

tbody tr:hover {
  background: rgba(200, 54, 31, .04)
}

tbody tr:last-child td {
  border-bottom: 0
}

/* Features */
.features {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.25rem
}

.feature {
  padding: 1.75rem;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, .04);
  border: 1px solid rgba(255, 255, 255, .08);
  transition: .3s var(--ease)
}

.feature:hover {
  border-color: var(--accent);
  transform: translateY(-3px)
}

.feature span {
  font-size: 1.6rem;
  color: var(--accent);
  display: inline-block;
  margin-bottom: .5rem
}

.feature p {
  color: #b6c0cc;
  margin: 0;
  font-size: .95rem
}

/* Projects */
.projects {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1.25rem
}

.project {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  aspect-ratio: 4/5;
  isolation: isolate
}

.project img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .6s var(--ease)
}

.project:hover img {
  transform: scale(1.08)
}

.project::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(11, 22, 34, .92) 0%, rgba(11, 22, 34, 0) 55%);
  z-index: 1
}

.project>div {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 1.25rem 1.4rem;
  color: #fff;
  z-index: 2
}

.project h3 {
  color: #fff;
  margin-bottom: .25rem
}

.project p {
  color: #cfd6e0;
  font-size: .85rem;
  margin: 0
}

.chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  justify-content: center;
  margin-top: 2rem
}

.chip-list li {
  padding: .5rem 1rem;
  border-radius: 999px;
  background: var(--bg-alt);
  font-size: .85rem;
  color: var(--ink-soft)
}

/* Testimonials */
.testimonials {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem
}

.quote {
  background: #fff;
  padding: 2rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  margin: 0;
  position: relative;
  border-top: 3px solid var(--primary)
}

.quote::before {
  content: "\201C";
  position: absolute;
  top: .5rem;
  right: 1.5rem;
  font-size: 4rem;
  font-family: Georgia, serif;
  color: var(--primary);
  opacity: .18;
  line-height: 1
}

.quote blockquote {
  margin: 0 0 1.25rem;
  font-size: 1rem;
  color: var(--ink);
  line-height: 1.55
}

.quote figcaption {
  font-size: .9rem
}

.quote figcaption strong {
  display: block;
  font-family: var(--font-display)
}

.quote figcaption span {
  color: var(--muted);
  font-size: .82rem
}

/* FAQ */
.grid-2-faq {
  grid-template-columns: 5fr 7fr
}

.faq-list {
  display: grid;
  gap: .75rem
}

details {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 1.1rem 1.4rem;
  transition: .2s;
  box-shadow: var(--shadow-sm)
}

details[open] {
  border-color: var(--primary)
}

summary {
  cursor: pointer;
  font-weight: 600;
  font-family: var(--font-display);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem
}

summary::-webkit-details-marker {
  display: none
}

summary::after {
  content: "+";
  font-size: 1.4rem;
  color: var(--primary);
  transition: .2s;
  line-height: 1
}

details[open] summary::after {
  transform: rotate(45deg)
}

details p {
  margin: .85rem 0 0;
  color: var(--ink-soft);
  font-size: .95rem
}

/* CTA Band */
.cta-band {
  background: linear-gradient(120deg, var(--primary) 0%, #7b1c0e 100%);
  color: #fff;
  padding: 4rem 0;
  position: relative;
  overflow: hidden
}

.cta-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 80% 0%, rgba(255, 180, 0, .25), transparent 50%)
}

.cta-inner {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  align-items: center;
  justify-content: space-between
}

.cta-inner h2 {
  color: #fff;
  margin: 0;
  max-width: 600px
}

.cta-inner p {
  margin: 0;
  color: #ffd9d0;
  flex: 1;
  min-width: 240px
}

.cta-band .btn-primary {
  background: #fff;
  color: var(--primary);
  box-shadow: 0 8px 24px -8px rgba(0, 0, 0, .4)
}

.cta-band .btn-primary:hover {
  background: var(--ink);
  color: #fff;
}

/* Contact */
.contact-list {
  display: grid;
  gap: 1.25rem;
  margin-top: 1.5rem
}

.contact-list li {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line)
}

.contact-list strong {
  font-family: var(--font-display);
  color: var(--ink);
  font-size: .85rem;
  letter-spacing: .08em;
  text-transform: uppercase
}

.contact-list a:hover {
  color: var(--primary)
}

.contact-form {
  background: #fff;
  padding: 2rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  display: grid;
  gap: 1rem;
  border: 1px solid var(--line)
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem
}

.contact-form label {
  display: flex;
  flex-direction: column;
  gap: .4rem;
  font-size: .85rem;
  font-weight: 600;
  color: var(--ink-soft);
  font-family: var(--font-display);
  letter-spacing: .02em
}

.contact-form input,
.contact-form textarea {
  font: inherit;
  font-weight: 400;
  font-family: var(--font-body);
  padding: .85rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: var(--bg);
  color: var(--ink);
  transition: .2s;
  resize: vertical;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--primary);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(200, 54, 31, .1)
}

.form-status {
  margin: 0;
  font-size: .9rem;
  min-height: 1.2em;
  color: var(--primary)
}

.form-status.success {
  color: #1c7a3f
}

/* Footer */
.site-footer {
  background: var(--dark);
  color: #cfd6e0;
  padding: 4rem 0 1.5rem;
  margin-top: 0
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.2fr 1.4fr;
  gap: 2rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, .08)
}

.footer-grid h4 {
  color: #fff;
  font-size: .85rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  margin-bottom: 1rem
}

.footer-grid ul {
  display: grid;
  gap: .5rem;
  font-size: .9rem
}

.footer-grid a:hover {
  color: var(--accent)
}

.footer-grid p {
  font-size: .9rem;
  color: #a9b3c0
}

.footer-tag {
  margin-top: 1rem;
  color: var(--accent);
  font-style: italic;
  font-size: .9rem
}

.site-footer .brand-text strong {
  color: #fff
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: .5rem;
  padding-top: 1.5rem;
  font-size: .82rem;
  color: #7c8694
}

.footer-bottom p {
  margin: 0
}

/* To top */
.to-top {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: grid;
  place-items: center;
  box-shadow: var(--shadow-md);
  opacity: 0;
  transform: translateY(20px);
  pointer-events: none;
  transition: .3s var(--ease);
  z-index: 40;
  font-size: 1.2rem;
  font-weight: 700
}

.to-top.show {
  opacity: 1;
  transform: none;
  pointer-events: auto
}

.to-top:hover {
  background: var(--primary-700)
}

/* Reveal animation */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .8s var(--ease), transform .8s var(--ease)
}

.reveal.in {
  opacity: 1;
  transform: none
}

/* Responsive */
@media (max-width: 1024px) {

  .cards,
  .features {
    grid-template-columns: repeat(2, minmax(0, 1fr))
  }

  .projects {
    grid-template-columns: repeat(2, minmax(0, 1fr))
  }

  .testimonials {
    grid-template-columns: 1fr
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr
  }

  .trust-grid {
    grid-template-columns: 1fr 1fr
  }
}

@media (max-width: 760px) {
  .nav-toggle {
    display: flex
  }

  .primary-nav {
    position: fixed;
    /* inset: 64px 0 auto 0; */
    background: #fff;
    border-bottom: 1px solid var(--line);
    padding: 1rem;
    transform: translateY(-110%);
    transition: .3s var(--ease);
    box-shadow: var(--shadow-md)
  }

  .primary-nav.open {
    transform: none
  }

  .primary-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 0
  }

  .primary-nav li {
    border-bottom: 1px solid var(--line)
  }

  .primary-nav li:last-child {
    border: 0;
    padding-top: .75rem
  }

  .primary-nav a {
    display: block;
    padding: .9rem .5rem
  }

  .grid-2,
  .grid-2-faq {
    grid-template-columns: 1fr
  }

  .cards,
  .features,
  .projects {
    grid-template-columns: 1fr
  }

  .hero-stats {
    grid-template-columns: repeat(2, 1fr)
  }

  .trust-grid {
    grid-template-columns: 1fr;
    padding: 1.5rem 1.25rem
  }

  .footer-grid {
    grid-template-columns: 1fr
  }

  .form-row {
    grid-template-columns: 1fr
  }

  .contact-list li {
    grid-template-columns: 1fr
  }

  .badge-card {
    left: 1rem;
    bottom: 1rem
  }

  .cta-inner {
    flex-direction: column;
    align-items: flex-start;
    text-align: left
  }
}

@media (prefers-reduced-motion: reduce) {

  *,
  *::before,
  *::after {
    animation-duration: .001s !important;
    transition-duration: .001s !important
  }

  .reveal {
    opacity: 1;
    transform: none
  }
}