/* ============================================================
   Indo Shell Mould Limited — Design System
   Palette: deep green heritage + charcoal + molten-metal accent
   ============================================================ */
:root {
  --green-900: #0e2a1d;
  --green-700: #1b4332;
  --green-500: #2d6a4f;
  --green-100: #d8f3dc;
  --char-950: #0b0f14;
  --char-900: #111827;
  --char-700: #374151;
  --char-500: #6b7280;
  --molten: #e85d04;
  --molten-bright: #f48c06;
  --paper: #faf9f6;
  --white: #ffffff;
  --radius: 10px;
  --shadow: 0 10px 30px rgba(11, 15, 20, .12);
  --font-display: "Sora", system-ui, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  color: var(--char-900);
  background: var(--paper);
  line-height: 1.65;
  font-size: 16.5px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--green-500); text-decoration: none; }
a:hover { color: var(--molten); }

h1, h2, h3, h4 { font-family: var(--font-display); line-height: 1.15; letter-spacing: -.015em; color: var(--char-950); }
h1 { font-size: clamp(2.1rem, 5vw, 3.6rem); font-weight: 700; }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); font-weight: 700; }
h3 { font-size: 1.25rem; font-weight: 600; }

.container { width: min(1160px, 92%); margin-inline: auto; }
section { padding: clamp(3.5rem, 8vw, 6rem) 0; }

.eyebrow {
  display: inline-block; text-transform: uppercase; letter-spacing: .18em;
  font-size: .78rem; font-weight: 600; color: var(--molten); margin-bottom: .9rem;
}
.lead { font-size: 1.12rem; color: var(--char-700); max-width: 62ch; }
.center { text-align: center; }
.center .lead { margin-inline: auto; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(11, 15, 20, .92); backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.nav-wrap { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: flex; align-items: center; gap: .7rem; }
.brand img { height: 42px; width: auto; }
.brand-name { font-family: var(--font-display); color: var(--white); font-weight: 700; font-size: 1.05rem; letter-spacing: .02em; }
.brand-name small { display: block; font-size: .62rem; font-weight: 400; color: #9ca3af; letter-spacing: .22em; text-transform: uppercase; }

.main-nav { display: flex; align-items: center; gap: 1.6rem; }
.main-nav a { color: #d1d5db; font-size: .92rem; font-weight: 500; padding: .4rem 0; position: relative; }
.main-nav a:hover, .main-nav a[aria-current="page"] { color: var(--white); }
.main-nav a[aria-current="page"]::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -4px; height: 2px; background: var(--molten);
}
.btn {
  display: inline-block; font-family: var(--font-display); font-weight: 600; font-size: .95rem;
  padding: .78rem 1.6rem; border-radius: 999px; border: 0; cursor: pointer; transition: .2s;
}
.btn-primary { background: var(--molten); color: var(--white) !important; }
.btn-primary:hover { background: var(--molten-bright); transform: translateY(-1px); }
.btn-outline { border: 1.5px solid rgba(255,255,255,.4); color: var(--white) !important; }
.btn-outline:hover { border-color: var(--molten); color: var(--molten) !important; }
.btn-dark { background: var(--green-700); color: var(--white) !important; }
.btn-dark:hover { background: var(--green-900); }

.nav-toggle { display: none; background: none; border: 0; cursor: pointer; padding: .5rem; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--white); margin: 5px 0; transition: .25s; }

/* ---------- Hero ---------- */
.hero {
  position: relative; min-height: 88vh; display: flex; align-items: center;
  background: var(--char-950); color: var(--white); overflow: hidden; padding: 6rem 0;
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background: url("../img/banner/home-banner.jpg") center/cover no-repeat;
  opacity: .55;
}
.hero::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(105deg, rgba(11,15,20,.94) 30%, rgba(14,42,29,.55) 70%, rgba(232,93,4,.18));
}
.hero .container { position: relative; z-index: 2; }
.hero h1 { color: var(--white); max-width: 17ch; }
.hero h1 em { font-style: normal; color: var(--molten-bright); }
.hero .lead { color: #d1d5db; margin: 1.4rem 0 2.2rem; }
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }

/* page hero (inner pages) */
.page-hero {
  background: linear-gradient(120deg, var(--char-950), var(--green-900));
  color: var(--white); padding: clamp(4rem, 9vw, 6.5rem) 0 clamp(2.5rem, 5vw, 4rem);
}
.page-hero h1 { color: var(--white); }
.page-hero .lead { color: #cbd5d1; margin-top: 1rem; }

/* ---------- Stats band ---------- */
.stats-band { background: var(--green-700); color: var(--white); padding: 2.6rem 0; }
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 1.5rem; text-align: center; }
.stat b { display: block; font-family: var(--font-display); font-size: 2.2rem; font-weight: 700; color: var(--white); }
.stat span { font-size: .85rem; color: var(--green-100); text-transform: uppercase; letter-spacing: .1em; }

/* ---------- Cards ---------- */
.grid { display: grid; gap: 1.6rem; }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }

.card {
  background: var(--white); border: 1px solid #e5e7eb; border-radius: var(--radius);
  padding: 1.8rem; transition: .25s; position: relative; overflow: hidden;
}
.card:hover { box-shadow: var(--shadow); transform: translateY(-3px); border-color: var(--green-500); }
.card h3 { margin-bottom: .6rem; }
.card p { color: var(--char-700); font-size: .95rem; }
.card .icon {
  width: 46px; height: 46px; border-radius: 10px; display: grid; place-items: center;
  background: var(--green-100); color: var(--green-700); font-size: 1.3rem; margin-bottom: 1.1rem;
}
.card a.more { display: inline-block; margin-top: 1rem; font-weight: 600; font-size: .9rem; }

.dark-section { background: var(--char-950); color: #d1d5db; }
.dark-section h2, .dark-section h3 { color: var(--white); }
.dark-section .card { background: #161d27; border-color: #263241; }
.dark-section .card p { color: #9ca3af; }
.dark-section .card h3 { color: var(--white); }

/* ---------- Lists ---------- */
.check-list { list-style: none; }
.check-list li { padding: .45rem 0 .45rem 1.9rem; position: relative; color: var(--char-700); }
.check-list li::before {
  content: "✓"; position: absolute; left: 0; top: .45rem;
  color: var(--molten); font-weight: 700;
}

/* ---------- Split ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 3.5rem; align-items: center; }
.split img { border-radius: var(--radius); box-shadow: var(--shadow); }

/* ---------- Timeline ---------- */
.timeline { list-style: none; position: relative; margin-top: 2.5rem; }
.timeline::before { content: ""; position: absolute; left: 84px; top: 0; bottom: 0; width: 2px; background: #d1d5db; }
.timeline li { display: grid; grid-template-columns: 70px 1fr; gap: 2.6rem; padding: 1.1rem 0; position: relative; }
.timeline li::after {
  content: ""; position: absolute; left: 79px; top: 1.75rem; width: 12px; height: 12px;
  border-radius: 50%; background: var(--molten); border: 2px solid var(--paper);
}
.timeline .year { font-family: var(--font-display); font-weight: 700; color: var(--green-700); text-align: right; font-size: 1.05rem; }
.timeline h3 { font-size: 1.05rem; }
.timeline p { color: var(--char-700); font-size: .93rem; }

/* ---------- Logo wall ---------- */
.logo-wall { display: grid; grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); gap: 1rem; }
.logo-wall .logo-tile {
  background: var(--white); border: 1px solid #e5e7eb; border-radius: 8px;
  display: grid; place-items: center; padding: 1.1rem; min-height: 92px; transition: .2s;
}
.logo-wall .logo-tile:hover { border-color: var(--green-500); }
.logo-wall img { max-height: 52px; width: auto; filter: grayscale(1); opacity: .75; transition: .2s; }
.logo-wall .logo-tile:hover img { filter: none; opacity: 1; }

/* ---------- Awards ---------- */
.award-row { display: flex; gap: 1.3rem; align-items: flex-start; padding: 1.1rem 0; border-bottom: 1px solid #e5e7eb; }
.award-row .year-chip {
  flex: 0 0 auto; font-family: var(--font-display); font-weight: 700; color: var(--white);
  background: var(--green-700); border-radius: 8px; padding: .35rem .8rem; font-size: .9rem;
}
.award-row img { width: 72px; border-radius: 6px; }
.award-row p { color: var(--char-700); }

/* ---------- Tables ---------- */
.spec-table { width: 100%; border-collapse: collapse; font-size: .95rem; }
.spec-table th, .spec-table td { text-align: left; padding: .85rem 1rem; border-bottom: 1px solid #e5e7eb; }
.spec-table th { font-family: var(--font-display); font-size: .8rem; text-transform: uppercase; letter-spacing: .08em; color: var(--green-700); }

/* ---------- CTA band ---------- */
.cta-band {
  background: linear-gradient(110deg, var(--green-900), var(--green-700) 60%, #3e5f2a);
  color: var(--white); text-align: center; border-radius: var(--radius);
  padding: clamp(2.5rem, 6vw, 4rem); position: relative; overflow: hidden;
}
.cta-band h2 { color: var(--white); margin-bottom: .8rem; }
.cta-band p { color: var(--green-100); max-width: 55ch; margin: 0 auto 1.8rem; }

/* ---------- Forms ---------- */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; }
.form-grid .full { grid-column: 1 / -1; }
label { display: block; font-weight: 600; font-size: .88rem; margin-bottom: .35rem; }
input, textarea, select {
  width: 100%; padding: .8rem 1rem; border: 1.5px solid #d1d5db; border-radius: 8px;
  font-family: var(--font-body); font-size: .95rem; background: var(--white);
}
input:focus, textarea:focus, select:focus { outline: 2px solid var(--green-500); border-color: var(--green-500); }
.file-drop {
  border: 2px dashed #d1d5db; border-radius: var(--radius); padding: 1.5rem; text-align: center;
  color: var(--char-500); font-size: .92rem; background: var(--white);
}
.file-drop input { border: 0; padding: .5rem 0; }
.form-note { font-size: .83rem; color: var(--char-500); }

/* ---------- Footer ---------- */
.site-footer { background: var(--char-950); color: #9ca3af; padding: 4rem 0 2rem; font-size: .92rem; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.4fr; gap: 2.5rem; margin-bottom: 2.5rem; }
.site-footer h4 { color: var(--white); font-size: .95rem; margin-bottom: 1rem; }
.site-footer ul { list-style: none; }
.site-footer li { margin: .45rem 0; }
.site-footer a { color: #9ca3af; }
.site-footer a:hover { color: var(--molten-bright); }
.footer-bottom { border-top: 1px solid #1f2937; padding-top: 1.5rem; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 1rem; font-size: .84rem; }
.footer-brand img { height: 40px; margin-bottom: 1rem; }

/* ---------- Reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.reveal.visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- Utility ---------- */
.mt-1 { margin-top: 1rem; } .mt-2 { margin-top: 2rem; } .mt-3 { margin-top: 3rem; }
.mb-1 { margin-bottom: 1rem; } .mb-2 { margin-bottom: 2rem; }
.placeholder-note {
  background: #fff7ed; border: 1px dashed var(--molten); border-radius: 8px;
  padding: .6rem 1rem; font-size: .85rem; color: #9a3412; margin-top: 1rem;
}
.skip-link {
  position: absolute; left: -9999px; top: 0; background: var(--molten); color: var(--white);
  padding: .6rem 1.2rem; z-index: 200; border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .split { grid-template-columns: 1fr; gap: 2rem; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .main-nav {
    position: fixed; inset: 72px 0 auto 0; background: var(--char-950);
    flex-direction: column; align-items: flex-start; padding: 1.5rem 6%;
    gap: 1.1rem; display: none; border-bottom: 1px solid #1f2937;
  }
  .main-nav.open { display: flex; }
  .nav-toggle { display: block; }
  .nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .timeline::before { left: 64px; }
  .timeline li { grid-template-columns: 50px 1fr; gap: 2rem; }
  .timeline li::after { left: 59px; }
}
@media (max-width: 560px) {
  .footer-grid { grid-template-columns: 1fr; }
  .hero { min-height: 76vh; }
}