/* ============================================================
   SHREE IMPEX STEEL — Master Stylesheet
   Single file used by ALL pages. Never edit per-page.
   ============================================================ */

/* ── RESET ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

/* ── DESIGN TOKENS ── */
:root {
  --white:      #ffffff;
  --off-white:  #f8f7f4;
  --cream:      #f2f0eb;
  --light:      #e8e5de;
  --border:     #d8d4cb;
  --muted:      #8a8680;
  --mid:        #5c5850;
  --body:       #2e2c28;
  --heading:    #1a1916;
  --navy:       #0f1923;
  --navy2:      #1a2535;
  --gold:       #b8922a;
  --gold2:      #d4a832;
  --gold-bg:    #fdf6e7;
  --gold-lt:    #f5e8c4;
  --steel:      #4a6080;
  --steel-lt:   #eef2f7;

  --font-serif: Georgia, 'Times New Roman', serif;
  --font-sans:  -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  --font-mono:  'Courier New', Courier, monospace;

  --shadow-sm:  0 1px 3px rgba(0,0,0,0.08);
  --shadow-md:  0 4px 16px rgba(0,0,0,0.10);
  --shadow-lg:  0 12px 40px rgba(0,0,0,0.13);
}

/* ── BASE ── */
body {
  font-family: var(--font-sans);
  background: var(--white);
  color: var(--body);
  overflow-x: hidden;
  font-size: 16px;
  line-height: 1.65;
}
h1, h2, h3, h4 {
  font-family: var(--font-serif);
  color: var(--heading);
  line-height: 1.15;
}
a { color: inherit; }
img { max-width: 100%; display: block; }

/* ── TYPOGRAPHY SCALE ── */
.display-xl { font-size: clamp(3rem, 6.5vw, 6rem); font-weight: 800; line-height: 1.0; }
.display-lg { font-size: clamp(2.2rem, 4vw, 3.8rem); font-weight: 700; }
.display-md { font-size: clamp(1.7rem, 2.8vw, 2.6rem); font-weight: 700; }
.eyebrow {
  font-family: var(--font-sans);
  font-size: 0.72rem; font-weight: 600;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--gold);
}

/* ── LAYOUT ── */
.container      { max-width: 1180px; margin: 0 auto; padding: 0 2rem; }
.container-wide { max-width: 1380px; margin: 0 auto; padding: 0 2rem; }
section { padding: 5rem 0; }
.bg-off   { background: var(--off-white); }
.bg-cream { background: var(--cream); }
.bg-navy  { background: var(--navy); }
.bg-white { background: var(--white); }

.section-header { margin-bottom: 3rem; }
.section-header h2 { margin-top: 0.5rem; }
.section-header p { color: var(--muted); max-width: 580px; margin-top: 0.8rem; font-size: 0.95rem; }
.section-header.centered { text-align: center; }
.section-header.centered p { margin-left: auto; margin-right: auto; }

/* ── BUTTONS ── */
.btn-gold {
  display: inline-flex; align-items: center; gap: 0.5rem;
  background: var(--gold); color: #fff;
  padding: 0.85rem 2rem;
  font-family: var(--font-sans); font-size: 0.88rem; font-weight: 600;
  letter-spacing: 0.04em; text-decoration: none; border: none; cursor: pointer;
  transition: all 0.2s;
}
.btn-gold:hover { background: var(--gold2); transform: translateY(-2px); }

.btn-navy {
  display: inline-flex; align-items: center; gap: 0.5rem;
  background: var(--navy); color: #fff;
  padding: 0.85rem 2rem;
  font-family: var(--font-sans); font-size: 0.88rem; font-weight: 600;
  letter-spacing: 0.04em; text-decoration: none; border: none; cursor: pointer;
  transition: all 0.2s;
}
.btn-navy:hover { background: var(--navy2); transform: translateY(-2px); }

.btn-outline-white {
  display: inline-flex; align-items: center; gap: 0.5rem;
  background: transparent; color: rgba(255,255,255,0.8);
  padding: 0.85rem 2rem;
  font-family: var(--font-sans); font-size: 0.88rem; font-weight: 600;
  letter-spacing: 0.04em; text-decoration: none;
  border: 2px solid rgba(255,255,255,0.3);
  transition: all 0.2s;
}
.btn-outline-white:hover { border-color: #fff; color: #fff; }

/* ============================================================
   TOPBAR
   ============================================================ */
.topbar {
  background: var(--navy);
  padding: 0.55rem 0;
  font-size: 0.76rem;
  font-family: var(--font-sans);
}
.topbar .container { display: flex; justify-content: space-between; align-items: center; }
.topbar a { color: rgba(255,255,255,0.65); text-decoration: none; transition: color 0.2s; }
.topbar a:hover { color: #fff; }
.tb-left, .tb-right { display: flex; gap: 1.8rem; align-items: center; }
.tb-badge {
  background: var(--gold); color: #fff;
  padding: 0.15rem 0.55rem; font-size: 0.65rem; font-weight: 700; letter-spacing: 0.08em;
}

/* ============================================================
   NAVBAR
   ============================================================ */
nav {
  position: sticky; top: 0; z-index: 1000;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 0 var(--border);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 70px;
}

/* Logo */
.logo { display: flex; align-items: center; gap: 0.75rem; text-decoration: none; flex-shrink: 0; }
.logo-mark {
  width: 40px; height: 40px;
  background: var(--navy);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-serif); font-weight: 800; font-size: 1rem;
  color: var(--gold); flex-shrink: 0; letter-spacing: -0.02em;
}
.logo-name {
  font-family: var(--font-serif); font-size: 1.2rem; font-weight: 700;
  color: var(--navy); line-height: 1.1; display: block;
}
.logo-tag {
  font-family: var(--font-sans); font-size: 0.6rem; font-weight: 600;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--muted); display: block; margin-top: 1px;
}

/* Nav links */
.nav-links { display: flex; align-items: center; list-style: none; }
.nav-links > li { position: relative; }
.nav-links > li > a {
  display: block; padding: 0 1rem; height: 70px; line-height: 70px;
  font-size: 0.83rem; font-weight: 500;
  color: var(--mid); text-decoration: none;
  white-space: nowrap; transition: color 0.2s;
  border-bottom: 2px solid transparent;
}
.nav-links > li > a:hover { color: var(--navy); }
.nav-links > li > a.active { color: var(--navy); border-bottom-color: var(--gold); }

/* Dropdown */
.dropdown {
  position: absolute; top: calc(100% + 1px); left: 0;
  background: var(--white); border: 1px solid var(--border);
  min-width: 280px; box-shadow: var(--shadow-lg);
  opacity: 0; visibility: hidden; transform: translateY(-6px);
  transition: all 0.2s; z-index: 200;
}
.nav-links > li:hover .dropdown { opacity: 1; visibility: visible; transform: translateY(0); }
.dropdown a {
  display: block; padding: 0.75rem 1.4rem;
  font-size: 0.81rem; color: var(--mid); text-decoration: none;
  border-bottom: 1px solid var(--cream); transition: all 0.15s;
  white-space: nowrap; border-bottom-width: 1px;
  line-height: 1.4;
}
.dropdown a:last-child { border-bottom: none; }
.dropdown a:hover { color: var(--navy); background: var(--off-white); padding-left: 1.8rem; }

/* Get Quote CTA in nav */
.nav-cta {
  background: var(--gold) !important;
  color: #fff !important;
  padding: 0.5rem 1.3rem !important;
  height: auto !important; line-height: 1 !important;
  font-weight: 600 !important; font-size: 0.82rem !important;
  border-bottom: none !important;
  transition: background 0.2s !important;
}
.nav-cta:hover { background: var(--gold2) !important; color: #fff !important; transform: none !important; }

/* Hamburger */
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 6px; flex-shrink: 0; }
.hamburger span { display: block; width: 22px; height: 2px; background: var(--navy); transition: 0.3s; }

/* ============================================================
   MOBILE NAV
   ============================================================ */
.mobile-nav {
  display: none; position: fixed; inset: 0;
  background: var(--white); z-index: 2000;
  flex-direction: column; padding: 5rem 2rem 2rem; overflow-y: auto;
  border-left: 4px solid var(--gold);
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  color: var(--mid); text-decoration: none;
  font-size: 1.05rem; font-weight: 500; padding: 0.9rem 0;
  border-bottom: 1px solid var(--cream); transition: color 0.2s;
}
.mobile-nav a:hover { color: var(--navy); }
.mobile-nav .mob-label {
  font-size: 0.65rem; font-weight: 700; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--gold);
  padding: 1.2rem 0 0.3rem; display: block;
}
.mobile-close {
  position: absolute; top: 1.5rem; right: 2rem;
  background: none; border: none; color: var(--mid); font-size: 1.8rem; cursor: pointer;
}

/* ============================================================
   BREADCRUMB
   ============================================================ */
.breadcrumb {
  background: var(--cream); border-bottom: 1px solid var(--border);
  padding: 0.75rem 0; font-size: 0.78rem; color: var(--muted);
}
.breadcrumb a { color: var(--steel); text-decoration: none; }
.breadcrumb a:hover { color: var(--navy); }
.breadcrumb span { margin: 0 0.4rem; }

/* ============================================================
   PAGE HERO (dark — used on all grade/type pages)
   ============================================================ */
.page-hero {
  background: var(--navy); padding: 4.5rem 0 3.5rem;
  position: relative; overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute; inset: 0;
  background:
    repeating-linear-gradient(0deg, transparent, transparent 39px, rgba(255,255,255,0.03) 39px, rgba(255,255,255,0.03) 40px),
    repeating-linear-gradient(90deg, transparent, transparent 39px, rgba(255,255,255,0.03) 39px, rgba(255,255,255,0.03) 40px);
}
.page-hero .ghost-text {
  position: absolute; right: 3%; top: 50%; transform: translateY(-50%);
  font-family: var(--font-serif); font-size: clamp(8rem, 20vw, 22rem);
  font-weight: 800; color: rgba(255,255,255,0.04);
  line-height: 1; pointer-events: none; user-select: none;
}
.hero-inner { position: relative; z-index: 1; }
.hero-inner .eyebrow { color: rgba(255,255,255,0.4); margin-bottom: 1rem; }
.hero-inner h1 { color: #fff; margin-bottom: 1.2rem; }
.hero-inner .hero-desc {
  color: rgba(255,255,255,0.6); font-size: 1.05rem;
  max-width: 640px; line-height: 1.75; margin-bottom: 2rem;
}
.hero-chips { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 2.5rem; }
.hero-chip {
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.14);
  color: rgba(255,255,255,0.72);
  padding: 0.3rem 0.8rem;
  font-size: 0.72rem; font-weight: 500;
  letter-spacing: 0.05em; font-family: var(--font-mono);
}
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; margin-bottom: 2.5rem; }
.hero-stats { display: flex; gap: 3rem; flex-wrap: wrap; }
.h-stat .h-num {
  font-family: var(--font-serif); font-size: 2.2rem;
  font-weight: 800; color: #fff; line-height: 1;
}
.h-stat .h-label {
  font-size: 0.7rem; color: rgba(255,255,255,0.38);
  letter-spacing: 0.1em; text-transform: uppercase; margin-top: 0.25rem;
}

/* ============================================================
   GRADE STICKY TABS
   ============================================================ */
.grade-nav {
  background: var(--white); border-bottom: 2px solid var(--border);
  position: sticky; top: 70px; z-index: 900;
}
.grade-tabs { display: flex; overflow-x: auto; scrollbar-width: none; }
.grade-tabs::-webkit-scrollbar { display: none; }
.grade-tab {
  flex-shrink: 0; padding: 1rem 1.4rem;
  font-size: 0.82rem; font-weight: 600; color: var(--muted);
  text-decoration: none; cursor: pointer;
  border-bottom: 3px solid transparent; margin-bottom: -2px;
  transition: all 0.2s; white-space: nowrap;
}
.grade-tab:hover, .grade-tab.active { color: var(--navy); border-bottom-color: var(--gold); }

/* ============================================================
   GRADE CARDS
   ============================================================ */
.grade-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: 1.5rem; }
.grade-card {
  background: var(--white); border: 1px solid var(--border);
  padding: 2rem; transition: all 0.25s; position: relative;
}
.grade-card:hover { border-color: var(--navy); box-shadow: var(--shadow-md); transform: translateY(-3px); }
.gc-label {
  font-family: var(--font-mono); font-size: 0.68rem; font-weight: 500;
  color: var(--gold); letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 0.5rem;
}
.grade-card h3 { font-size: 1.2rem; margin-bottom: 0.75rem; }
.grade-card p { font-size: 0.87rem; color: var(--mid); line-height: 1.65; margin-bottom: 1.25rem; }
.gc-props { display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem; margin-bottom: 1.25rem; }
.gc-prop { background: var(--off-white); padding: 0.5rem 0.65rem; }
.gc-prop .gp-label {
  font-size: 0.63rem; font-weight: 600; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--muted); display: block; margin-bottom: 0.15rem;
}
.gc-prop .gp-val { font-size: 0.8rem; font-weight: 600; color: var(--heading); font-family: var(--font-mono); }
.gc-apps { display: flex; flex-wrap: wrap; gap: 0.35rem; }
.gc-app { font-size: 0.67rem; background: var(--steel-lt); color: var(--steel); padding: 0.2rem 0.55rem; font-weight: 500; }
.gc-badge {
  position: absolute; top: 1rem; right: 1rem;
  background: var(--gold); color: #fff;
  font-size: 0.62rem; font-weight: 700; letter-spacing: 0.08em;
  padding: 0.2rem 0.5rem; text-transform: uppercase;
}
.gc-badge-navy { background: var(--navy); }

/* ============================================================
   SPEC TABLE
   ============================================================ */
.table-wrap { overflow-x: auto; border: 1px solid var(--border); margin-top: 1.5rem; }
.spec-table { width: 100%; border-collapse: collapse; font-size: 0.82rem; }
.spec-table th {
  background: var(--navy); color: #fff;
  padding: 0.85rem 1rem; text-align: left;
  font-size: 0.74rem; font-weight: 600;
  letter-spacing: 0.06em; text-transform: uppercase; white-space: nowrap;
}
.spec-table td { padding: 0.75rem 1rem; border-bottom: 1px solid var(--border); vertical-align: top; }
.spec-table tr:nth-child(even) td { background: var(--off-white); }
.spec-table tr:hover td { background: var(--gold-bg); }
.td-grade { font-family: var(--font-mono); font-weight: 600; color: var(--navy); font-size: 0.79rem; }
.td-std   { font-family: var(--font-mono); font-size: 0.77rem; color: var(--steel); }
.td-hi    { background: var(--gold-bg) !important; }

/* ============================================================
   WHY / FEATURES GRID
   ============================================================ */
.why-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 2rem; margin-top: 2.5rem; }
.why-item { padding-left: 1.5rem; border-left: 3px solid var(--gold); }
.why-item h4 { font-size: 1rem; margin-bottom: 0.5rem; }
.why-item p { font-size: 0.87rem; color: var(--mid); line-height: 1.65; }

/* ============================================================
   FAQ ACCORDION
   ============================================================ */
.faq-list { display: flex; flex-direction: column; }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-q {
  display: flex; justify-content: space-between; align-items: center;
  padding: 1.25rem 0; cursor: pointer; gap: 1rem;
}
.faq-q h4 { font-size: 0.96rem; font-family: var(--font-sans); font-weight: 600; color: var(--heading); line-height: 1.4; }
.faq-icon {
  width: 28px; height: 28px; background: var(--navy); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem; flex-shrink: 0; transition: all 0.2s; font-style: normal;
}
.faq-item.open .faq-icon { background: var(--gold); transform: rotate(45deg); }
.faq-a { display: none; padding: 0 0 1.25rem; font-size: 0.89rem; color: var(--mid); line-height: 1.72; }
.faq-item.open .faq-a { display: block; }

/* ============================================================
   CTA STRIP
   ============================================================ */
.cta-strip { background: var(--navy); padding: 4rem 0; }
.cta-strip-inner {
  display: grid; grid-template-columns: 1fr auto;
  gap: 3rem; align-items: center;
}
.cta-strip h2 { color: #fff; font-size: clamp(1.5rem, 3vw, 2.2rem); }
.cta-strip p { color: rgba(255,255,255,0.5); margin-top: 0.5rem; font-size: 0.92rem; }
.cta-strip-btns { display: flex; flex-direction: column; gap: 0.75rem; flex-shrink: 0; }

/* ============================================================
   RELATED CARDS
   ============================================================ */
.related-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 1rem; }
.related-card {
  background: var(--white); border: 1px solid var(--border);
  padding: 1.25rem 1.5rem; text-decoration: none; display: block; transition: all 0.2s;
}
.related-card:hover { border-color: var(--navy); transform: translateY(-2px); box-shadow: var(--shadow-sm); }
.rc-cat { font-size: 0.67rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--gold); margin-bottom: 0.35rem; }
.rc-name { font-family: var(--font-serif); font-size: 1rem; color: var(--heading); }

/* ============================================================
   TYPES GRID
   ============================================================ */
.types-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 1rem; }
.type-tile {
  background: var(--white); border: 1px solid var(--border);
  padding: 1.5rem; text-align: center;
  transition: all 0.2s; text-decoration: none; display: block;
}
.type-tile:hover { border-color: var(--gold); background: var(--gold-bg); transform: translateY(-2px); }
.type-tile .tt-icon { font-size: 1.8rem; margin-bottom: 0.75rem; display: block; }
.type-tile .tt-name { font-family: var(--font-serif); font-weight: 600; font-size: 0.97rem; color: var(--heading); display: block; margin-bottom: 0.3rem; }
.type-tile .tt-desc { font-size: 0.74rem; color: var(--muted); }

/* ============================================================
   FOOTER
   ============================================================ */
footer {
  background: var(--navy);
  border-top: 1px solid rgba(255,255,255,0.07);
  padding: 4rem 0 2rem;
  color: rgba(255,255,255,0.55);
}
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem; padding-bottom: 3rem;
  border-bottom: 1px solid rgba(255,255,255,0.07);
  margin-bottom: 2rem;
}
.footer-logo { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 1rem; }
.footer-logo .logo-mark { background: rgba(255,255,255,0.08); }
.footer-logo .logo-name { color: #fff; }
.footer-logo .logo-tag { color: rgba(255,255,255,0.3); }
footer p { font-size: 0.83rem; line-height: 1.7; max-width: 280px; }
.footer-col h4 {
  font-family: var(--font-sans); font-size: 0.68rem; font-weight: 700;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--gold); margin-bottom: 1.1rem;
}
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 0.5rem; }
.footer-col ul a { color: rgba(255,255,255,0.45); text-decoration: none; font-size: 0.83rem; transition: color 0.2s; }
.footer-col ul a:hover { color: #fff; }
.footer-bottom {
  display: flex; justify-content: space-between; align-items: center;
  font-size: 0.75rem; color: rgba(255,255,255,0.25);
  flex-wrap: wrap; gap: 0.75rem;
}
.footer-bottom a { color: rgba(255,255,255,0.25); text-decoration: none; }
.footer-bottom a:hover { color: rgba(255,255,255,0.6); }

/* ============================================================
   WHATSAPP FLOAT
   ============================================================ */
.wa-float {
  position: fixed; bottom: 2rem; right: 2rem; z-index: 500;
  background: #25D366; color: #fff; width: 56px; height: 56px;
  border-radius: 50%; display: flex; align-items: center; justify-content: center;
  text-decoration: none; box-shadow: 0 4px 20px rgba(37,211,102,0.45);
  transition: transform 0.2s;
}
.wa-float:hover { transform: scale(1.1); }

/* ============================================================
   SCROLL ANIMATION
   ============================================================ */
.fade-up { opacity: 1; transform: none; transition: opacity 0.55s ease, transform 0.55s ease; }
.fade-up.will-animate { opacity: 0; transform: translateY(22px); }
.fade-up.visible { opacity: 1 !important; transform: none !important; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .cta-strip-inner { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .tb-left .hide-sm, .tb-right .hide-sm { display: none; }
  section { padding: 3.5rem 0; }
  .grade-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 2rem; }
}
@media (max-width: 600px) {
  .footer-grid { grid-template-columns: 1fr; }
  .container { padding: 0 1.25rem; }
}