/* ==========================================================================
   BNKM International — Global Stylesheet
   White & blue theme: white backgrounds, logo-matched blue accent
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&family=Inter:wght@400;500;600;700&display=swap');

:root {
  --navy-900: #16213e;
  --navy-800: #1f3968;
  --navy-700: #2b447f;
  --navy-600: #3f63ac;
  --steel-500: #5c5f66;
  --steel-400: #83868c;
  --steel-300: #a8abaf;
  --steel-100: #e8e9e5;
  --steel-50: #f2f3f0;
  --white: #ffffff;
  --green-500: #2f4d8c;
  --green-400: #3f63ac;
  --green-100: #e8edf7;
  --amber-500: #d98c15;
  --danger-500: #c0392b;

  --font-head: 'Space Grotesk', 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  --font-body: 'Inter', 'Segoe UI', Tahoma, Geneva, Arial, sans-serif;

  --radius: 14px;
  --shadow-sm: 0 1px 3px rgba(22, 33, 62, 0.08);
  --shadow-md: 0 6px 20px rgba(22, 33, 62, 0.12);
  --shadow-lg: 0 16px 40px rgba(22, 33, 62, 0.18);
  --container: 1200px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--navy-800);
  background: var(--white);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

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

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

ul { list-style: none; }

h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 700;
  color: var(--navy-900);
  line-height: 1.15;
}

h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); letter-spacing: -1px; }
h2 { font-size: clamp(1.8rem, 3.6vw, 2.6rem); letter-spacing: -0.5px; }
h3 { font-size: 1.35rem; letter-spacing: -0.2px; }
h4 { font-size: 1.05rem; }

p { color: var(--steel-500); }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

section { padding: 80px 0; }
.section-tight { padding: 56px 0; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--white);
  background: var(--green-500);
  padding: 7px 14px;
  border-radius: 999px;
  margin-bottom: 16px;
}

.section-head { max-width: 760px; margin-bottom: 48px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head p { margin-top: 14px; font-size: 1.05rem; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}
.btn-primary { background: var(--green-500); color: var(--white); }
.btn-primary:hover { background: var(--green-400); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-outline { background: transparent; color: var(--white); border-color: rgba(255,255,255,0.5); }
.btn-outline:hover { background: rgba(255,255,255,0.12); border-color: var(--white); }
.btn-navy { background: var(--navy-900); color: var(--white); }
.btn-navy:hover { background: var(--navy-700); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-ghost { background: transparent; color: var(--navy-800); border-color: var(--steel-300); }
.btn-ghost:hover { border-color: var(--green-500); color: var(--green-500); }
.btn-block { width: 100%; justify-content: center; }
.cta-row { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 500;
  background: var(--white);
  border-bottom: 1px solid var(--steel-100);
}
.nav-wrap {
  max-width: 1360px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  gap: 18px;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand-logo { height: 42px; width: auto; display: block; flex-shrink: 0; }

.main-nav ul { display: flex; gap: 0; align-items: center; }
.main-nav a {
  color: var(--navy-800);
  background: var(--white);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 10px 14px;
  border-radius: 999px;
  transition: all 0.2s ease;
  display: inline-block;
  white-space: nowrap;
}
.main-nav a:hover { color: var(--green-500); background: var(--white); }
.main-nav a.active { color: var(--green-500); background: var(--white); }

.nav-cta { display: flex; align-items: center; gap: 14px; }
.nav-cta .btn { padding: 10px 20px; font-size: 0.88rem; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.nav-toggle span { width: 24px; height: 2px; background: var(--navy-900); display: block; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  background: linear-gradient(120deg, var(--navy-900) 0%, var(--navy-800) 55%, var(--navy-700) 100%);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  color: var(--white);
  overflow: hidden;
  padding: 100px 0 90px;
}
.hero.hero-photo .container { grid-template-columns: 1fr; max-width: 720px; }
.hero .container { position: relative; z-index: 2; display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 48px; align-items: center; }
.hero h1 { color: var(--white); }
.hero-copy p.lead { color: var(--steel-300); font-size: 1.12rem; margin-top: 20px; max-width: 560px; }
.hero-stats { display: flex; gap: 34px; margin-top: 44px; flex-wrap: wrap; }
.hero-stats div strong { display: block; font-family: var(--font-head); font-size: 1.6rem; color: var(--white); }
.hero-stats div span { font-size: 0.8rem; color: var(--steel-300); letter-spacing: 0.4px; }
.hero-visual { position: relative; }
.hero-bg-pattern {
  position: absolute; inset: 0; z-index: 1; opacity: 0.16;
  background-image: repeating-linear-gradient(45deg, rgba(255,255,255,0.5) 0 1px, transparent 1px 26px);
}

.page-hero {
  background: var(--green-100);
  color: var(--navy-900);
  padding: 72px 0 64px;
  position: relative;
  overflow: hidden;
}
.page-hero::after {
  content: "";
  position: absolute; inset: 0;
  background-image: repeating-linear-gradient(-45deg, rgba(22,33,62,0.35) 0 1px, transparent 1px 30px);
  opacity: 0.05;
}
.page-hero .container { position: relative; z-index: 2; }
.breadcrumb { font-size: 0.82rem; color: var(--steel-500); margin-bottom: 16px; letter-spacing: 0.3px; }
.breadcrumb a:hover { color: var(--green-500); }
.page-hero h1 { color: var(--navy-900); max-width: 780px; }
.page-hero p.lead { color: var(--steel-500); font-size: 1.08rem; margin-top: 16px; max-width: 680px; }

/* ---------- Cards & Grids ---------- */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

/* ---------- Bento proof-point grid ---------- */
.bento-grid { display: grid; grid-template-columns: 1fr 1fr 1.1fr; gap: 24px; align-items: stretch; }
.bento-tile { border-radius: var(--radius); padding: 34px; height: 100%; display: flex; flex-direction: column; justify-content: space-between; gap: 20px; }
.bento-tile.accent { background: var(--green-500); color: var(--white); }
.bento-tile.dark { background: var(--navy-900); color: var(--white); }
.bento-stat-num { font-family: var(--font-head); font-weight: 700; font-size: clamp(2.8rem, 6vw, 4.2rem); line-height: 1; }
.bento-tile.accent h3 { color: var(--white); margin-top: 4px; }
.bento-tile.accent p { color: rgba(255,255,255,0.85); font-size: 0.92rem; }
.bento-tile.dark p { color: var(--white); font-size: 1.2rem; font-weight: 500; line-height: 1.4; }
.bento-tile.dark p span { color: var(--steel-300); font-weight: 400; }
.bento-tile.photo {
  position: relative;
  overflow: hidden;
  min-height: 300px;
  background-size: cover;
  background-position: center;
  color: var(--white);
  justify-content: flex-end;
}
.bento-tile.photo::before {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(22,33,62,0) 35%, rgba(22,33,62,0.9) 100%);
}
.bento-tile.photo * { position: relative; z-index: 1; }
.bento-tile.photo h3 { color: var(--white); }
.bento-tile.photo p { color: var(--steel-300); font-size: 0.92rem; }
.bento-tile .btn { align-self: flex-start; padding: 10px 18px; font-size: 0.85rem; }

.card {
  background: var(--white);
  border: 1px solid var(--steel-100);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  transition: all 0.25s ease;
  height: 100%;
}
.card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); border-color: transparent; }
.card .icon-box { margin-bottom: 18px; }
.card h3 { margin-bottom: 10px; font-size: 1.15rem; }
.card p { font-size: 0.95rem; }
.card ul.mini-list { margin-top: 14px; }
.card ul.mini-list li { font-size: 0.88rem; color: var(--steel-500); padding-left: 18px; position: relative; margin-bottom: 6px; }
.card ul.mini-list li::before { content: "—"; position: absolute; left: 0; color: var(--green-500); }

.icon-box {
  width: 54px; height: 54px;
  border-radius: 10px;
  background: var(--navy-800);
  display: flex; align-items: center; justify-content: center;
}
.icon-box svg { width: 26px; height: 26px; stroke: var(--white); }
.icon-box.alt { background: var(--green-100); }
.icon-box.alt svg { stroke: var(--navy-800); }

.bg-navy { background: var(--green-100); color: var(--navy-900); }
.bg-navy p { color: var(--steel-500); }
.bg-steel { background: var(--steel-50); }
.bg-green-strip { background: var(--green-500); color: var(--white); }

/* Cards sitting on the pale-blue bg-navy band */
.bg-navy .card {
  background: var(--white);
  border-color: var(--steel-100);
}

/* ---------- Tags / Pills ---------- */
.tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.6px;
  text-transform: uppercase;
  padding: 5px 11px;
  border-radius: 999px;
  background: var(--green-500);
  color: var(--white);
}
.tag-navy { background: var(--navy-900); color: var(--white); }
.tag-steel { background: var(--steel-100); color: var(--steel-500); }
.tag-row { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 14px; }

/* ---------- Standards strip ---------- */
.standards-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  padding: 34px 0;
  border-top: 1px solid var(--steel-100);
  border-bottom: 1px solid var(--steel-100);
}
.standards-strip .label { font-size: 0.78rem; font-weight: 700; letter-spacing: 1.2px; text-transform: uppercase; color: var(--steel-500); }
.standards-list { display: flex; gap: 30px; flex-wrap: wrap; }
.standards-list div {
  font-family: var(--font-head); font-weight: 700; font-size: 1.15rem; color: var(--navy-800);
  display: flex; flex-direction: column; align-items: center; gap: 2px;
}
.standards-list div small { font-size: 0.62rem; font-weight: 600; color: var(--steel-400); text-transform: none; letter-spacing: 0.2px; }

/* ---------- Process / Steps ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; counter-reset: step; }
.step { position: relative; padding: 30px 24px 24px; background: var(--white); border: 1px solid var(--steel-100); border-radius: var(--radius); }
.step::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  font-family: var(--font-head); font-weight: 700; font-size: 1.6rem; color: var(--steel-300);
  display: block; margin-bottom: 12px;
}
.step h4 { margin-bottom: 8px; }
.step p { font-size: 0.9rem; }

/* ---------- Split section ---------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.split-media { border-radius: var(--radius); overflow: hidden; }

/* ---------- Industry / Illustration blocks (inline SVG art) ---------- */
.art-block {
  border-radius: var(--radius);
  overflow: hidden;
  background: linear-gradient(135deg, var(--navy-800), var(--navy-600));
  position: relative;
  min-height: 320px;
  display: flex; align-items: center; justify-content: center;
}
.art-block svg { width: 100%; height: 100%; }

/* ---------- Photography (local images) ---------- */
img { max-width: 100%; height: auto; display: block; }

.split-media img,
.section-image {
  width: 100%;
  height: 420px;
  object-fit: cover;
  border-radius: var(--radius);
  display: block;
}

.split-media-contain { background: var(--steel-50); border: 1px solid var(--steel-100); display: flex; align-items: center; justify-content: center; }
.split-media-contain img { height: auto; max-height: 420px; object-fit: contain; padding: 14px; }

.image-card { border-radius: 14px; overflow: hidden; box-shadow: var(--shadow-sm); }
.image-card img {
  width: 100%;
  height: 260px;
  object-fit: cover;
  border-radius: 14px;
  display: block;
}

.image-caption {
  margin-top: 14px;
  font-size: 0.85rem;
  color: var(--steel-400);
  text-align: center;
}

/* ---------- Tables (project cards / expertise matrix) ---------- */
.project-card {
  border: 1px solid var(--steel-100);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--white);
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}
.project-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.project-card .thumb {
  height: 170px;
  background: linear-gradient(135deg, var(--navy-700), var(--navy-900));
  position: relative;
  display: flex; align-items: flex-end; padding: 16px;
}
.project-card .thumb .tag { position: absolute; top: 16px; left: 16px; }
.project-card .body { padding: 26px; }
.project-card .body h3 { font-size: 1.1rem; margin-bottom: 6px; }
.project-card dl { margin-top: 16px; display: grid; gap: 10px; }
.project-card dl div { display: grid; grid-template-columns: 120px 1fr; gap: 8px; font-size: 0.85rem; }
.project-card dl dt { font-weight: 700; color: var(--navy-800); }
.project-card dl dd { color: var(--steel-500); }

/* ---------- Testimonial / Quote ---------- */
.quote-block {
  border-left: 4px solid var(--green-500);
  padding: 6px 0 6px 24px;
  margin: 32px 0;
}
.quote-block p { font-size: 1.05rem; color: var(--navy-800); font-style: italic; }

/* ---------- Forms ---------- */
.form-card {
  background: var(--white);
  border-radius: var(--radius);
  border: 1px solid var(--steel-100);
  box-shadow: var(--shadow-md);
  padding: 40px;
}
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-group { margin-bottom: 20px; display: flex; flex-direction: column; gap: 6px; }
.form-group.full { grid-column: 1 / -1; }
.form-group label { font-size: 0.85rem; font-weight: 700; color: var(--navy-800); }
.form-group label .req { color: var(--danger-500); }
input, select, textarea {
  font-family: var(--font-body);
  font-size: 0.95rem;
  padding: 12px 14px;
  border: 1px solid var(--steel-300);
  border-radius: 10px;
  background: var(--white);
  color: var(--navy-800);
  width: 100%;
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--green-500);
  box-shadow: 0 0 0 3px rgba(47,77,140,0.18);
}
textarea { resize: vertical; min-height: 120px; }
.file-input { border: 1px dashed var(--steel-300); background: var(--steel-50); padding: 22px; border-radius: var(--radius); text-align: center; cursor: pointer; }
.file-input input { display: none; }
.file-input span { font-size: 0.85rem; color: var(--steel-500); }
.form-note { font-size: 0.78rem; color: var(--steel-400); margin-top: 10px; }
.form-success {
  display: none;
  background: var(--green-100);
  border: 1px solid var(--green-400);
  color: var(--navy-900);
  padding: 16px 20px;
  border-radius: var(--radius);
  font-weight: 600;
  margin-top: 18px;
  font-size: 0.9rem;
}
.form-success.show { display: block; }

/* ---------- CTA band ---------- */
.cta-band {
  background: var(--green-100);
  border: 1px solid var(--steel-100);
  color: var(--navy-900);
  border-radius: 10px;
  padding: 56px;
  display: flex; align-items: center; justify-content: space-between; gap: 32px; flex-wrap: wrap;
}
.cta-band h2 { color: var(--navy-900); margin-bottom: 8px; }
.cta-band p { color: var(--steel-500); }

/* ---------- Footer ---------- */
.site-footer { background: var(--white); color: var(--steel-500); padding: 72px 0 0; position: relative; overflow: hidden; border-top: 1px solid var(--steel-100); }
.footer-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.3fr 0.85fr 0.95fr 0.95fr 1.05fr; gap: 32px; padding-bottom: 48px; border-bottom: 1px solid var(--steel-100); }
.footer-brand .brand-logo { height: 50px; }
.footer-brand p { color: var(--steel-500); font-size: 0.9rem; margin: 16px 0 20px; max-width: 300px; }
.footer-social { display: flex; gap: 10px; }
.footer-social a { width: 36px; height: 36px; border-radius: 50%; background: var(--steel-100); color: var(--navy-800); display: flex; align-items: center; justify-content: center; font-size: 0.8rem; font-weight: 700; }
.footer-social a:hover { background: var(--green-500); color: var(--white); }
.footer-col h4 { color: var(--navy-900); font-size: 0.85rem; letter-spacing: 1px; text-transform: uppercase; margin-bottom: 20px; }
.footer-col ul li { margin-bottom: 11px; font-size: 0.9rem; }
.footer-col ul li a:hover { color: var(--green-500); }
.footer-contact li { display: flex; gap: 10px; margin-bottom: 16px; font-size: 0.88rem; align-items: flex-start; }
.footer-contact svg { width: 18px; height: 18px; stroke: var(--green-500); flex-shrink: 0; margin-top: 2px; }
.footer-bottom { position: relative; z-index: 1; display: flex; justify-content: space-between; align-items: center; padding: 24px 0; font-size: 0.82rem; flex-wrap: wrap; gap: 10px; }
.footer-bottom a:hover { color: var(--green-500); }
.footer-legal { display: flex; gap: 20px; }
.site-footer::before {
  content: "BNKM";
  position: absolute;
  left: -0.04em;
  bottom: -0.16em;
  z-index: 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(5rem, 16vw, 13rem);
  line-height: 1;
  color: rgba(22,33,62,0.04);
  white-space: nowrap;
  pointer-events: none;
}

/* ---------- Reveal ---------- */
/* Plays once on load regardless of scroll position, so content is never left hidden if JS doesn't run. */
@keyframes revealUp { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: translateY(0); } }
.reveal { animation: revealUp 0.5s ease both; }

/* ---------- Utility ---------- */
.mt-0 { margin-top: 0 !important; }
.text-center { text-align: center; }
.divider { height: 1px; background: var(--steel-100); margin: 56px 0; }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .hero .container { grid-template-columns: 1fr; }
  .hero-visual { display: none; }
  .grid-4, .grid-3, .steps { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; gap: 32px; }
  .footer-grid { grid-template-columns: 1fr 1fr 1fr; gap: 32px; }
}

@media (max-width: 768px) {
  .split-media img, .section-image { height: 280px; }
  .image-card img { height: 220px; }
}

@media (max-width: 860px) {
  .main-nav { position: fixed; inset: 76px 0 0 0; background: var(--white); padding: 20px 24px; transform: translateX(100%); transition: transform 0.3s ease; overflow-y: auto; z-index: 400; border-top: 1px solid var(--steel-100); }
  .main-nav.open { transform: translateX(0); }
  .main-nav ul { flex-direction: column; align-items: stretch; gap: 2px; }
  .main-nav a { display: block; padding: 14px 10px; font-size: 1rem; border-radius: 8px; border-bottom: 1px solid var(--steel-100); }
  .nav-toggle { display: flex; }
  .nav-cta { display: none; }
  .grid-2, .grid-3, .grid-4, .steps { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .cta-band { padding: 36px 24px; flex-direction: column; text-align: center; }
  .footer-grid { grid-template-columns: 1fr; }
  section { padding: 56px 0; }
}

@media (max-width: 480px) {
  .hero-stats { gap: 22px; }
  .standards-list { gap: 18px; }
  .form-card { padding: 24px; }
}