/* ── LOGBRAIN — DESIGN SYSTEM ── */
@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,400;0,500;0,600;0,700;1,400;1,600&family=Outfit:wght@300;400;500;600&display=swap');

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

 :root {
  --white:   #FFFFFF;
  --off-white: #111111;
  --light:   #151515;
  --mid:     #F5F5F5;
  --muted:   #D0D0D0;
  --dark-mid:#9A9A9A;
  --dark:    #121212;
  --black:   #0A0A0A;

  --accent:  #FFFFFF;
  --gold:    #FFFFFF;
  --gold-lt: #D8D8D8;
  --blue:    #F2F2F2;
  --blue-lt: #D0D0D0;

  --bg:      var(--black);
  --surface: #111111;
  --surface-2: #151515;
  --border:  rgba(255,255,255,0.14);
  --text:    var(--mid);
  --text-2:  var(--muted);
  --text-3:  var(--dark-mid);

  --font-display: 'Outfit', sans-serif;
  --font-ui:      'Outfit', sans-serif;

  --max-w: 1200px;
  --section-pad: 7rem 5vw;
  --nav-h: 72px;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-ui);
  font-weight: 400;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; }

/* ── UTILITIES ── */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 5vw; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }

.fade-in { opacity: 0; transform: translateY(20px); transition: opacity 0.75s ease, transform 0.75s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }
.fade-in.delay-1 { transition-delay: 0.1s; }
.fade-in.delay-2 { transition-delay: 0.2s; }
.fade-in.delay-3 { transition-delay: 0.3s; }
.fade-in.delay-4 { transition-delay: 0.4s; }

/* ── NAV ── */
.nav {
  position: fixed; top: 0; left: 0; right: 0;
  height: var(--nav-h);
  z-index: 200;
  display: flex; align-items: center;
  background: rgba(10,10,10,0.94);
  backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border);
  transition: box-shadow 0.3s;
}
.nav.scrolled { box-shadow: 0 12px 40px rgba(0,0,0,0.35); }

.nav-inner {
  width: 100%; max-width: var(--max-w);
  margin: 0 auto; padding: 0 5vw;
  display: flex; align-items: center; justify-content: space-between;
}

.nav-logo {
  display: flex; align-items: center; gap: 0.75rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.5rem;
  letter-spacing: 0.02em;
  color: var(--white);
}
.nav-logo img {
  width: 36px; height: 36px;
  border-radius: 12px;
}
.nav-logo-text span { color: var(--gold); }

.nav-links {
  display: flex; align-items: center; gap: 2.5rem;
  list-style: none;
}
.nav-links a {
  font-size: 0.82rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-2);
  transition: color 0.2s;
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute; bottom: -3px; left: 0; right: 0;
  height: 1px; background: var(--gold);
  transform: scaleX(0); transform-origin: left;
  transition: transform 0.3s;
}
.nav-links a:hover { color: var(--white); }
.nav-links a:hover::after { transform: scaleX(1); }

.nav-cta {
  font-size: 0.78rem !important;
  font-weight: 500 !important;
  letter-spacing: 0.1em;
  text-transform: uppercase !important;
  color: var(--white) !important;
  background: var(--black);
  padding: 0.6rem 1.5rem;
  border-radius: 12px;
  transition: background 0.2s, transform 0.2s !important;
}
.nav-cta::after { display: none !important; }
.nav-cta:hover { background: var(--blue) !important; transform: translateY(-1px); }

.nav-hamburger {
  display: none;
  flex-direction: column; gap: 5px; cursor: pointer;
  background: none; border: none; padding: 4px;
}
.nav-hamburger span { display: block; width: 24px; height: 1.5px; background: var(--dark); transition: all 0.3s; }

/* ── HERO ── */
.hero {
  min-height: 100vh;
  padding-top: var(--nav-h);
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 0;
  overflow: hidden;
  position: relative;
}

.hero-left {
  padding: 5rem 4rem 5rem 5vw;
  position: relative; z-index: 1;
}

.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 0.75rem;
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1.75rem;
}
.hero-eyebrow::before {
  content: '';
  width: 32px; height: 1px; background: var(--gold);
}

.hero h1 {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(3rem, 5.5vw, 4.8rem);
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--white);
  margin-bottom: 1.75rem;
}
.hero h1 em {
  font-style: italic;
  color: var(--gold);
}

.hero-sub {
  font-size: 1.05rem;
  color: var(--text-2);
  max-width: 460px;
  line-height: 1.8;
  margin-bottom: 3rem;
  font-weight: 300;
}

.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }

.btn-primary {
  display: inline-flex; align-items: center; gap: 0.5rem;
  background: var(--black);
  color: var(--white);
  font-family: var(--font-ui);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.9rem 2.25rem;
  border-radius: 12px;
  border: none; cursor: pointer;
  transition: background 0.25s, transform 0.2s;
}
.btn-primary:hover { background: var(--blue); transform: translateY(-2px); }
.btn-primary .arrow { transition: transform 0.2s; }
.btn-primary:hover .arrow { transform: translateX(4px); }

.btn-secondary {
  display: inline-flex; align-items: center; gap: 0.5rem;
  background: transparent;
  color: var(--white);
  font-family: var(--font-ui);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.9rem 2.25rem;
  border-radius: 12px;
  border: 1px solid var(--border);
  cursor: pointer;
  transition: border-color 0.25s, color 0.25s;
}
.btn-secondary:hover { border-color: var(--white); }

.hero-right {
  height: 100%;
  min-height: 100vh;
  background: var(--dark);
  position: relative;
  overflow: hidden;
  display: flex; align-items: center; justify-content: center;
}

.hero-pattern {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.05) 1px, transparent 1px);
  background-size: 48px 48px;
}

.hero-visual {
  position: relative; z-index: 1;
  padding: 3rem;
  text-align: center;
}

.hero-logo-large {
  width: 120px; height: 120px;
  border-radius: 12px;
  margin: 0 auto 2rem;
  opacity: 0.9;
}

.hero-stats {
  display: grid; grid-template-columns: 1fr 1fr; gap: 1.5px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 12px;
  overflow: hidden;
  width: 360px;
}
.hero-stat {
  background: rgba(255,255,255,0.02);
  padding: 2rem 1.5rem;
  text-align: center;
}
.hero-stat-num {
  font-family: var(--font-display);
  font-size: 2.8rem;
  font-weight: 600;
  color: var(--gold);
  line-height: 1;
  margin-bottom: 0.4rem;
}
.hero-stat-label {
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-2);
}

/* ── CLIENTS ── */
.clients {
  padding: 2.5rem 5vw;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}
.clients-inner {
  max-width: var(--max-w); margin: 0 auto;
  display: flex; align-items: center; gap: 4rem;
}
.clients-label {
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-3);
  white-space: nowrap;
}
.clients-list {
  display: flex; align-items: center; gap: 3.5rem;
  flex-wrap: wrap;
}
.client-name {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--mid);
  letter-spacing: 0.06em;
  transition: color 0.2s;
}
.client-name:hover { color: var(--dark-mid); }

/* ── SECTION COMMONS ── */
.section { padding: var(--section-pad); }
.section-inner { max-width: var(--max-w); margin: 0 auto; }

.section-label {
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  display: flex; align-items: center; gap: 0.75rem;
  margin-bottom: 1.25rem;
}
.section-label::before { content: ''; width: 24px; height: 1px; background: var(--gold); }

h2 {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(2rem, 3.5vw, 3rem);
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--white);
  margin-bottom: 1rem;
}
h2 em { font-style: italic; color: var(--gold); }

.section-intro {
  color: var(--text-2);
  font-size: 1rem;
  max-width: 560px;
  line-height: 1.8;
  margin-bottom: 4rem;
}

/* ── SERVICES ── */
.services-bg { background: var(--dark); }
.services-bg .section-label { color: var(--gold); }
.services-bg h2 { color: var(--white); }
.services-bg .section-intro { color: var(--text-2); }

.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: 12px;
  overflow: hidden;
}

.service-card {
  background: rgba(255,255,255,0.02);
  padding: 2.5rem 2rem;
  transition: background 0.3s;
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, var(--gold), transparent);
  transform: scaleX(0); transform-origin: left;
  transition: transform 0.4s;
}
.service-card:hover { background: rgba(255,255,255,0.05); }
.service-card:hover::before { transform: scaleX(1); }

.service-num {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 600;
  color: rgba(255,255,255,0.12);
  line-height: 1;
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}
.service-icon { font-size: 1.75rem; margin-bottom: 1rem; }
.service-title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 0.75rem;
  line-height: 1.3;
}
.service-desc {
  font-size: 0.82rem;
  color: var(--text-3);
  line-height: 1.75;
}
.service-tags {
  display: flex; flex-wrap: wrap; gap: 0.4rem;
  margin-top: 1.5rem;
}
.service-tag {
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: rgba(175,175,175,0.9);
  border: 1px solid rgba(255,255,255,0.18);
  padding: 0.2rem 0.6rem;
  border-radius: 12px;
}

/* ── EXPERTISE / NUMBERS ── */
.expertise-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 8rem;
  align-items: center;
}
.expertise-numbers {
  display: grid; grid-template-columns: 1fr 1fr; gap: 3rem;
}
.expertise-num {
  border-top: 1px solid var(--border);
  padding-top: 1.5rem;
}
.expertise-num .num {
  font-family: var(--font-display);
  font-size: 3.5rem;
  font-weight: 600;
  color: var(--gold);
  line-height: 1;
  margin-bottom: 0.4rem;
}
.expertise-num .label {
  font-size: 0.78rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--text-3);
}

.expertise-content h2 { margin-bottom: 1.5rem; }
.expertise-list { display: flex; flex-direction: column; gap: 1.25rem; }
.expertise-item {
  display: flex; gap: 1.25rem; align-items: flex-start;
  padding: 1.25rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  transition: border-color 0.25s, transform 0.25s;
}
.expertise-item:hover { border-color: var(--gold); transform: translateX(4px); }
.expertise-item-icon {
  font-size: 1.2rem; margin-top: 0.1rem; flex-shrink: 0;
}
.expertise-item-title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 0.2rem;
}
.expertise-item-desc { font-size: 0.82rem; color: var(--text-2); line-height: 1.65; }

/* ── FORMATION ── */
.formation-bg { background: var(--surface); }
.schools-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem;
  margin-top: 3rem;
}
.school-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2.5rem 2rem;
  text-align: center;
  transition: border-color 0.25s, box-shadow 0.25s;
}
.school-card:hover {
  border-color: var(--gold);
  box-shadow: 0 8px 40px rgba(255,255,255,0.08);
}
.school-initial {
  width: 64px; height: 64px;
  background: var(--dark);
  color: var(--gold);
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 600;
  display: flex; align-items: center; justify-content: center;
  border-radius: 12px;
  margin: 0 auto 1.5rem;
}
.school-name {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 0.5rem;
  line-height: 1.3;
}
.school-desc { font-size: 0.82rem; color: var(--text-2); line-height: 1.7; }

/* ── BLOG ── */
.blog-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem;
}
.article-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  transition: border-color 0.25s, box-shadow 0.25s, transform 0.25s;
  display: flex; flex-direction: column;
}
.article-card:hover {
  border-color: var(--gold);
  box-shadow: 0 12px 48px rgba(0,0,0,0.35);
  transform: translateY(-4px);
}
.article-card-top {
  padding: 2rem 2rem 0;
}
.article-category {
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 0.75rem;
}
.article-card h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--white);
  line-height: 1.35;
  margin-bottom: 0.75rem;
}
.article-excerpt {
  font-size: 0.82rem;
  color: var(--text-2);
  line-height: 1.75;
}
.article-card-footer {
  padding: 1.5rem 2rem;
  margin-top: auto;
  border-top: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
}
.article-meta {
  font-size: 0.72rem;
  color: var(--text-3);
  display: flex; align-items: center; gap: 0.75rem;
}
.article-meta-sep { color: var(--border); }
.article-read-link {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--white);
  display: flex; align-items: center; gap: 0.35rem;
  transition: color 0.2s, gap 0.2s;
}
.article-read-link:hover { color: var(--gold); gap: 0.6rem; }

/* Featured article */
.article-card.featured {
  grid-column: span 2;
}
.article-card.featured h3 {
  font-size: 1.6rem;
}

/* ── CONTACT ── */
.contact-grid {
  display: grid; grid-template-columns: 1fr 1.4fr; gap: 6rem; align-items: start;
}
.contact-info h2 { margin-bottom: 1.5rem; }
.contact-info p { color: var(--text-2); font-size: 0.95rem; line-height: 1.8; margin-bottom: 2rem; }
.contact-details { display: flex; flex-direction: column; gap: 1.25rem; }
.contact-detail {
  display: flex; gap: 1rem; align-items: flex-start;
}
.contact-detail-icon {
  width: 40px; height: 40px; flex-shrink: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem;
}
.contact-detail-label { font-size: 0.72rem; color: var(--text-3); margin-bottom: 0.2rem; letter-spacing: 0.06em; }
.contact-detail-value { font-size: 0.9rem; color: var(--white); font-weight: 400; }

/* Form */
.contact-form { display: flex; flex-direction: column; gap: 1.25rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-group { display: flex; flex-direction: column; gap: 0.5rem; }
.form-label {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-2);
}
.form-input, .form-select, .form-textarea {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.875rem 1rem;
  font-family: var(--font-ui);
  font-size: 0.9rem;
  color: var(--white);
  font-weight: 300;
  transition: border-color 0.2s;
  width: 100%;
  outline: none;
  appearance: none;
}
.form-input:focus, .form-select:focus, .form-textarea:focus { border-color: var(--gold); }
.form-textarea { min-height: 140px; resize: vertical; }
.form-submit {
  align-self: flex-start;
  background: var(--black);
  color: var(--white);
  font-family: var(--font-ui);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 1rem 2.5rem;
  border: none; border-radius: 12px; cursor: pointer;
  transition: background 0.25s, transform 0.2s;
  display: flex; align-items: center; gap: 0.5rem;
}
.form-submit:hover { background: var(--blue); transform: translateY(-2px); }
.form-submit:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

.form-message {
  padding: 0.875rem 1rem;
  border-radius: 12px;
  font-size: 0.875rem;
  display: none;
}
.form-message.success { background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.26); color: #FFFFFF; display: block; }
.form-message.error { background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.12); color: #AFAFAF; display: block; }

/* ── FOOTER ── */
footer {
  background: var(--black);
  color: var(--text-3);
  padding: 5rem 5vw 2.5rem;
}
.footer-inner { max-width: var(--max-w); margin: 0 auto; }
.footer-top {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 4rem;
  padding-bottom: 4rem;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  margin-bottom: 2.5rem;
}
.footer-brand .nav-logo { color: var(--white); margin-bottom: 1.25rem; }
.footer-brand p { font-size: 0.82rem; line-height: 1.8; max-width: 280px; }
.footer-brand .footer-logo-text { font-family: var(--font-display); font-size: 1.4rem; color: var(--white); }
.footer-brand .footer-logo-text span { color: var(--gold); }

.footer-col h4 {
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 1.25rem;
}
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 0.75rem; }
.footer-col ul a {
  font-size: 0.85rem;
  color: var(--text-2);
  transition: color 0.2s;
}
.footer-col ul a:hover { color: var(--gold); }

.footer-bottom {
  display: flex; align-items: center; justify-content: space-between;
  font-size: 0.75rem;
}
.footer-bottom a { color: rgba(115,115,115,0.78); transition: color 0.2s; }
.footer-bottom a:hover { color: var(--gold); }

/* ── BLOG PAGE ── */
.blog-header {
  padding: 9rem 5vw 4rem;
  background: var(--dark);
  text-align: center;
}
.blog-header h1 { color: var(--white); margin-bottom: 1rem; }
.blog-header p { color: var(--text-2); max-width: 520px; margin: 0 auto; }

.blog-filters {
  padding: 2rem 5vw;
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 1rem;
}
.filter-btn {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-3);
  background: none;
  border: 1px solid var(--border);
  padding: 0.45rem 1.1rem;
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.2s;
}
.filter-btn:hover, .filter-btn.active { color: var(--white); border-color: var(--white); background: var(--surface); }

/* ── ARTICLE PAGE ── */
.article-hero {
  padding: 9rem 5vw 4rem;
  background: var(--dark);
}
.article-hero-inner { max-width: 760px; }
.article-hero .article-category { color: var(--gold); font-size: 0.72rem; font-weight: 500; letter-spacing: 0.18em; text-transform: uppercase; margin-bottom: 1.25rem; display: block; }
.article-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 500;
  color: var(--white);
  line-height: 1.15;
  margin-bottom: 1.5rem;
}
.article-hero-meta { display: flex; align-items: center; gap: 1.25rem; font-size: 0.78rem; color: var(--text-3); }

.article-body {
  padding: 5rem 5vw;
}
.article-body-inner { max-width: 760px; margin: 0 auto; }
.article-content {
  font-size: 1rem;
  color: var(--text);
  line-height: 1.9;
}
.article-content h2 {
  font-size: 1.6rem;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
}
.article-content h3 { font-family: var(--font-display); font-size: 1.2rem; font-weight: 600; color: var(--white); margin-top: 2rem; margin-bottom: 0.75rem; }
.article-content p { margin-bottom: 1.25rem; }
.article-content strong { font-weight: 500; color: var(--white); }
.article-content ul, .article-content ol { margin: 1rem 0 1.25rem 1.5rem; }
.article-content li { margin-bottom: 0.5rem; }

/* ── LOADING ── */
.loading {
  display: flex; align-items: center; justify-content: center;
  padding: 4rem; color: var(--text-3); font-size: 0.875rem;
  gap: 0.75rem;
}
.spinner {
  width: 18px; height: 18px;
  border: 2px solid var(--border);
  border-top-color: var(--gold);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── MOBILE NAV OVERLAY ── */
.nav-mobile-overlay {
  display: none;
  position: fixed; inset: 0; z-index: 190;
  background: rgba(10,10,10,0.97);
  flex-direction: column; align-items: center; justify-content: center; gap: 2.5rem;
}
.nav-mobile-overlay.open { display: flex; }
.nav-mobile-overlay a {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 500;
  color: var(--white);
  letter-spacing: -0.01em;
  transition: color 0.2s;
}
.nav-mobile-overlay a:hover { color: var(--gold); }

/* ── RESPONSIVE ── */
@media (max-width: 1100px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 3rem; }
}

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; }
  .hero-right { min-height: 400px; }
  .expertise-grid { grid-template-columns: 1fr; gap: 4rem; }
  .contact-grid { grid-template-columns: 1fr; gap: 3rem; }
  .blog-grid { grid-template-columns: 1fr; }
  .article-card.featured { grid-column: span 1; }
  .schools-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
  .hero-left { padding: 3rem 5vw; }
  .form-row { grid-template-columns: 1fr; }
  .hero-stats { width: 280px; }
  .footer-top { grid-template-columns: 1fr; gap: 2rem; }
  .footer-bottom { flex-direction: column; gap: 1rem; text-align: center; }
  .clients-inner { flex-direction: column; align-items: flex-start; gap: 1.5rem; }
}


/* ── THEME OVERRIDES: BLACK & WHITE ── */
body { background: var(--bg); color: var(--text); }
.nav { background: rgba(10,10,10,0.92); border-bottom-color: var(--border); }
.nav.scrolled { box-shadow: 0 12px 40px rgba(0,0,0,0.35); }
.nav-logo, .nav-links a:hover, .hero h1, h2, .expertise-item-title, .school-name, .article-card h3, .article-read-link, .contact-detail-value, .article-content h3, .article-content strong, .nav-mobile-overlay a { color: var(--white); }
.nav-logo-text span, .footer-brand .footer-logo-text span, .section-label, .services-bg .section-label, .article-hero .article-category, h2 em, .hero h1 em, .hero-eyebrow, .hero-stat-num, .expertise-num .num, .article-category, .article-read-link:hover, .footer-col ul a:hover, .footer-bottom a:hover { color: var(--white); }
.hero-eyebrow::before, .section-label::before, .nav-links a::after { background: var(--white); }
.btn-primary, .nav-cta, .form-submit { background: var(--white); color: var(--black) !important; }
.btn-primary:hover, .nav-cta:hover, .form-submit:hover { background: #EDEDED !important; box-shadow: 0 0 24px rgba(255,255,255,0.12); }
.btn-secondary, .btn-ghost { color: var(--white); border-color: rgba(255,255,255,0.16); }
.btn-secondary:hover, .btn-ghost:hover { border-color: var(--white); color: var(--white); }
.hero-right, .services-bg, .blog-header, .article-hero, footer, .formation-bg { background: var(--black); }
.clients, .expertise-item, .school-card, .article-card, .contact-detail-icon, .form-input, .form-select, .form-textarea, .filter-btn.active, .filter-btn:hover { background: var(--surface); }
.services-grid, .hero-stats, .hero-tech-box, .school-card, .article-card, .expertise-item, .contact-detail-icon, .form-input, .form-select, .form-textarea, .blog-filters { border-color: var(--border); }
.service-card { background: rgba(255,255,255,0.02); }
.service-card:hover { background: rgba(255,255,255,0.04); }
.service-card::before, .spinner { border-top-color: var(--white); background: linear-gradient(90deg, var(--white), transparent); }
.service-num { color: rgba(255,255,255,0.12); }
.service-desc, .blog-header p, .footer-col ul a, .article-hero-meta, .service-tags, .hero-stat-label, .service-tag, .footer-brand p { color: var(--text-2); }
.client-name { color: var(--text); }
.client-name:hover { color: var(--white); }
.school-initial, .lb-badge { background: var(--white); color: var(--white); }
.school-card:hover, .article-card:hover, .expertise-item:hover, .form-input:focus, .form-select:focus, .form-textarea:focus, .filter-btn.active, .filter-btn:hover { border-color: rgba(255,255,255,0.24); box-shadow: 0 0 0 3px rgba(255,255,255,0.04); }
.form-message.success, .form-message.error { background: rgba(255,255,255,0.05); border-color: rgba(255,255,255,0.16); color: var(--white); }
.nav-mobile-overlay { background: rgba(10,10,10,0.97); }


/* ── THEME V2: PREMIUM DARK ── */
::selection { background: rgba(255,255,255,0.16); color: #FFFFFF; }
html { font-size: 16px; }
body {
  background:
    radial-gradient(circle at top right, rgba(255,255,255,0.055), transparent 22%),
    radial-gradient(circle at 18% 12%, rgba(255,255,255,0.03), transparent 20%),
    var(--bg);
  color: var(--text-2);
  letter-spacing: -0.01em;
}
p, li { color: var(--text-2); }
h1, h2, h3, h4, h5 { color: var(--white); letter-spacing: -0.03em; }
h2 {
  font-weight: 600;
  line-height: 1.06;
  margin-bottom: 1.2rem;
}
.section-label,
.article-category,
.article-hero .article-category,
.nav-logo-text span,
.footer-brand .footer-logo-text span,
h2 em,
.hero-eyebrow,
.article-read-link:hover,
.footer-col ul a:hover,
.footer-bottom a:hover { color: var(--white); }
.section-label,
.form-label,
.filter-btn,
.hero-stat-label,
.contact-detail-label,
.footer-col h4 {
  letter-spacing: 0.14em;
}
.nav {
  background: rgba(10,10,10,0.76);
  border-bottom-color: rgba(255,255,255,0.12);
  box-shadow: 0 12px 40px rgba(0,0,0,0.22);
}
.nav.scrolled { box-shadow: 0 18px 52px rgba(0,0,0,0.34); border-bottom-color: rgba(255,255,255,0.18); }
.nav-links a { color: var(--text-3); }
.nav-links a:hover, .nav-logo, .article-card h3, .school-name, .expertise-item-title, .contact-detail-value, .article-content strong, .article-content h3, .article-content h2 { color: var(--white); }
.nav-cta, .btn-primary, .form-submit {
  background: var(--white);
  color: var(--black) !important;
  border-radius: 12px;
  box-shadow: inset 0 -1px 0 rgba(0,0,0,0.2), 0 10px 30px rgba(255,255,255,0.08);
}
.btn-primary:hover, .nav-cta:hover, .form-submit:hover {
  background: #F3F3F3 !important;
  box-shadow: inset 0 -1px 0 rgba(0,0,0,0.2), 0 14px 34px rgba(255,255,255,0.11);
}
.btn-secondary, .btn-ghost {
  color: var(--white);
  border-color: rgba(255,255,255,0.18);
  border-radius: 12px;
  background: rgba(255,255,255,0.02);
}
.btn-secondary:hover, .btn-ghost:hover {
  border-color: rgba(255,255,255,0.3);
  background: rgba(255,255,255,0.05);
}
.blog-header,
.article-hero,
.services-bg,
.formation-bg,
footer,
.hero-right,
.clients {
  background: linear-gradient(180deg, rgba(255,255,255,0.015), rgba(255,255,255,0)), var(--bg);
}
.hero-stat,
.hero-tech-box,
.service-card,
.school-card,
.article-card,
.expertise-item,
.contact-detail,
.form-input,
.form-select,
.form-textarea,
.filter-btn,
.blog-filters,
.contact-detail-icon {
  background: linear-gradient(180deg, rgba(255,255,255,0.038), rgba(255,255,255,0.014));
  border-color: rgba(255,255,255,0.14);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.03);
}
.services-grid,
.hero-stats,
.hero-tech-box,
.school-card,
.article-card,
.expertise-item,
.contact-detail-icon,
.form-input,
.form-select,
.form-textarea,
.blog-filters,
.contact-detail {
  border-color: rgba(255,255,255,0.14);
}
.service-card:hover,
.school-card:hover,
.article-card:hover,
.expertise-item:hover,
.contact-detail:hover {
  border-color: rgba(255,255,255,0.22);
  background: linear-gradient(180deg, rgba(255,255,255,0.055), rgba(255,255,255,0.022));
  box-shadow: 0 18px 44px rgba(0,0,0,0.3), inset 0 1px 0 rgba(255,255,255,0.04);
}
.service-num,
.hero-stat-label,
.service-tag,
.article-hero-meta,
.footer-bottom,
.footer-col h4,
.loading,
.contact-detail-label,
.filter-btn,
.article-meta,
.article-meta-sep { color: var(--text-3); }
.service-desc,
.blog-header p,
.footer-col ul a,
.footer-brand p,
.contact-info p,
.section-intro,
.school-desc,
.article-excerpt,
.article-content,
.article-content p,
.article-content li,
.article-hero-meta,
.contact-detail-label,
.contact-detail-value + * { color: var(--text-2); }
.article-content { font-size: 1.03rem; line-height: 1.95; }
.article-content h2 { margin-top: 3rem; }
.article-content h3 { font-size: 1.18rem; font-weight: 600; margin-top: 2.1rem; }
.article-content strong { font-weight: 600; }
.service-card::before,
.section-label::before,
.hero-eyebrow::before,
.spinner { border-top-color: var(--white); background: linear-gradient(90deg, var(--white), transparent); }
.filter-btn:hover,
.filter-btn.active {
  color: var(--white);
  border-color: rgba(255,255,255,0.24);
  background: rgba(255,255,255,0.06);
  box-shadow: 0 0 0 3px rgba(255,255,255,0.04);
}
.form-input,
.form-select,
.form-textarea { color: var(--white); }
.form-input::placeholder,
.form-textarea::placeholder { color: var(--text-3); }
.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: rgba(255,255,255,0.26);
  box-shadow: 0 0 0 4px rgba(255,255,255,0.05);
}
.nav-mobile-overlay { background: rgba(10,10,10,0.97); }
.nav-mobile-overlay a { color: var(--white); font-family: var(--font-ui); font-weight: 600; }
.footer-bottom, .footer-bottom a, .footer-col ul a { color: var(--text-2); }
.tech-pill, .service-tag {
  border-radius: 12px;
  background: rgba(255,255,255,0.04);
  border-color: rgba(255,255,255,0.14);
  color: var(--text);
}
@media (max-width: 768px) {
  .blog-header,
  .article-hero { padding-top: 8rem; }
}