/* ============================================================
   PLATEAU ENTERPRISES — style.css
   Palette: #0B1120 (ink), #1a1f2e (navy), #3A5FD9 (blue),
            #F7F8FC (off-white), #ffffff (white), #6b7490 (muted)
   Type: Playfair Display (display) + Inter (body/ui)
   ============================================================ */

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

:root {
  --ink:      #0B1120;
  --navy:     #1a1f2e;
  --blue:     #3A5FD9;
  --blue-lt:  #5b7ee5;
  --off:      #F7F8FC;
  --white:    #ffffff;
  --muted:    #6b7490;
  --border:   #e2e5ef;
  --font-display: 'Playfair Display', Georgia, serif;
  --font-body:    'Inter', system-ui, sans-serif;
  --max-w: 1160px;
  --nav-h: 72px;
}

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

body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { cursor: pointer; font-family: var(--font-body); }

/* ── LAYOUT ─────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 40px;
}

/* ── TYPOGRAPHY SHARED ──────────────────────────────────── */
.section-eyebrow {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 16px;
}
.section-eyebrow.center { text-align: center; }

.section-headline {
  font-family: var(--font-display);
  font-size: clamp(28px, 3.5vw, 42px);
  font-weight: 500;
  line-height: 1.2;
  color: var(--navy);
  margin-bottom: 24px;
}
.section-headline.center { text-align: center; }

/* ── BUTTONS ────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.02em;
  transition: background 0.2s, color 0.2s, border-color 0.2s, transform 0.15s;
  border: 1.5px solid transparent;
}
.btn:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; }

.btn-primary {
  background: var(--blue);
  color: var(--white);
  border-color: var(--blue);
}
.btn-primary:hover { background: var(--blue-lt); border-color: var(--blue-lt); }

.btn-ghost {
  background: transparent;
  color: var(--navy);
  border-color: var(--navy);
}
.btn-ghost:hover { background: var(--navy); color: var(--white); }

.btn-full { width: 100%; justify-content: center; }

/* ── NAV ────────────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
  transition: box-shadow 0.3s;
}
.nav.scrolled { box-shadow: 0 2px 16px rgba(11,17,32,0.08); }

.nav-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-wordmark {
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--navy);
  line-height: 1;
}
.nav-sub {
  font-weight: 400;
  opacity: 0.6;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}
.nav-links a {
  font-size: 13px;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: 0.03em;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--navy); }
.nav-links a:focus-visible { outline: 2px solid var(--blue); border-radius: 2px; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 6px;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--navy);
  border-radius: 2px;
  transition: transform 0.25s, opacity 0.25s;
}

.nav-mobile {
  display: none;
  flex-direction: column;
  background: var(--white);
  border-top: 1px solid var(--border);
  padding: 16px 0 24px;
}
.mobile-link {
  padding: 12px 40px;
  font-size: 15px;
  font-weight: 500;
  color: var(--navy);
  transition: background 0.15s;
}
.mobile-link:hover { background: var(--off); }

/* ── HERO ───────────────────────────────────────────────── */
.hero {
  position: relative;
  padding-top: calc(var(--nav-h) + 100px);
  padding-bottom: 100px;
  overflow: hidden;
  background: var(--white);
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 60px 60px;
  opacity: 0.4;
  mask-image: linear-gradient(to bottom, transparent, rgba(0,0,0,0.6) 30%, rgba(0,0,0,0.6) 70%, transparent);
}

.hero-inner {
  position: relative;
  max-width: 800px;
}

.hero-eyebrow {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.hero-eyebrow::before {
  content: '';
  display: block;
  width: 32px;
  height: 2px;
  background: var(--blue);
  border-radius: 2px;
}

.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(36px, 5.5vw, 64px);
  font-weight: 500;
  line-height: 1.12;
  color: var(--navy);
  margin-bottom: 28px;
  letter-spacing: -0.01em;
}

.hero-body {
  font-size: 18px;
  font-weight: 300;
  color: var(--muted);
  max-width: 560px;
  line-height: 1.7;
  margin-bottom: 40px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-rule {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--blue) 0%, transparent 60%);
}

/* ── STATS ──────────────────────────────────────────────── */
.stats {
  background: var(--navy);
  padding: 48px 0;
}

.stats-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  flex: 1;
  min-width: 120px;
  text-align: center;
}

.stat-num {
  font-family: var(--font-display);
  font-size: 36px;
  font-weight: 500;
  color: var(--white);
  line-height: 1;
}

.stat-label {
  font-size: 12px;
  font-weight: 400;
  color: rgba(255,255,255,0.5);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: rgba(255,255,255,0.12);
  flex-shrink: 0;
}

/* ── ABOUT ──────────────────────────────────────────────── */
.about {
  padding: 120px 0;
  background: var(--white);
}

.about-inner {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 80px;
  align-items: start;
}

.about-left .section-headline { margin-bottom: 32px; }

.about-mark {
  margin-top: 24px;
  opacity: 0.85;
}

.about-lead {
  font-size: 20px;
  font-weight: 400;
  color: var(--navy);
  line-height: 1.6;
  margin-bottom: 20px;
}

.about-body {
  font-size: 16px;
  color: var(--muted);
  line-height: 1.8;
  margin-bottom: 16px;
}

/* ── FOCUS ──────────────────────────────────────────────── */
.focus {
  padding: 120px 0;
  background: var(--off);
}

.focus-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 64px;
}

.focus-intro {
  font-size: 17px;
  color: var(--muted);
  line-height: 1.7;
}

.focus-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.focus-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 48px 44px;
  position: relative;
  overflow: hidden;
  transition: box-shadow 0.25s, transform 0.2s;
}
.focus-card:hover {
  box-shadow: 0 8px 32px rgba(58,95,217,0.1);
  transform: translateY(-3px);
}

.focus-card--accent {
  background: var(--navy);
  border-color: var(--navy);
}
.focus-card--accent .focus-card-title,
.focus-card--accent .focus-card-body,
.focus-card--accent .focus-list li { color: rgba(255,255,255,0.88); }
.focus-card--accent .focus-list li::before { background: var(--blue-lt); }

.focus-card-num {
  position: absolute;
  top: 28px;
  right: 36px;
  font-family: var(--font-display);
  font-size: 64px;
  font-weight: 500;
  line-height: 1;
  color: var(--border);
  pointer-events: none;
  user-select: none;
}
.focus-card--accent .focus-card-num { color: rgba(255,255,255,0.06); }

.focus-icon {
  margin-bottom: 24px;
  width: 48px;
  height: 48px;
  background: var(--off);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.focus-card--accent .focus-icon {
  background: rgba(255,255,255,0.08);
}

.focus-card-title {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 500;
  color: var(--navy);
  margin-bottom: 16px;
}

.focus-card-body {
  font-size: 15px;
  color: var(--muted);
  line-height: 1.75;
  margin-bottom: 24px;
}

.focus-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.focus-list li {
  font-size: 14px;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 10px;
}
.focus-list li::before {
  content: '';
  display: block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--blue);
  flex-shrink: 0;
}

/* ── VALUES ─────────────────────────────────────────────── */
.values {
  padding: 120px 0;
  background: var(--white);
}

.values > .container > .section-headline { margin-bottom: 56px; }

.values-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  margin-top: 16px;
}

.value-item { padding: 0; }

.value-bar {
  width: 32px;
  height: 3px;
  background: var(--blue);
  border-radius: 2px;
  margin-bottom: 20px;
}

.value-title {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 500;
  color: var(--navy);
  margin-bottom: 12px;
}

.value-body {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.8;
}

/* ── CONTACT ────────────────────────────────────────────── */
.contact {
  padding: 120px 0;
  background: var(--off);
}

.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 80px;
  align-items: start;
}

.contact-body {
  font-size: 17px;
  color: var(--muted);
  line-height: 1.75;
  margin-bottom: 40px;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-detail {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.contact-detail-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--blue);
}

.contact-detail-value {
  font-size: 16px;
  color: var(--navy);
}
.contact-detail-value a {
  color: var(--blue);
  transition: opacity 0.2s;
}
.contact-detail-value a:hover { opacity: 0.75; }

/* Form */
.contact-form {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 44px 40px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 13px;
  font-weight: 500;
  color: var(--navy);
  letter-spacing: 0.02em;
}

.form-optional {
  color: var(--muted);
  font-weight: 400;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--border);
  border-radius: 4px;
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--navy);
  background: var(--white);
  transition: border-color 0.2s, box-shadow 0.2s;
  resize: vertical;
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(58,95,217,0.12);
}
.form-group input.error,
.form-group textarea.error {
  border-color: #d9534f;
}

.form-note {
  font-size: 12px;
  color: var(--muted);
  text-align: center;
  margin-top: -4px;
}

.form-success {
  text-align: center;
  padding: 20px 0;
  color: var(--navy);
  font-size: 15px;
  line-height: 1.7;
}
.form-success strong { color: var(--blue); }

/* ── FOOTER ─────────────────────────────────────────────── */
.footer {
  background: var(--navy);
  padding: 40px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer-wordmark {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: rgba(255,255,255,0.7);
}

.footer-copy {
  font-size: 13px;
  color: rgba(255,255,255,0.35);
}

.footer-nav {
  display: flex;
  gap: 28px;
}
.footer-nav a {
  font-size: 13px;
  color: rgba(255,255,255,0.45);
  transition: color 0.2s;
}
.footer-nav a:hover { color: var(--white); }

/* ── SCROLL ANIMATIONS ──────────────────────────────────── */
.fade-up {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s cubic-bezier(0.25,0.8,0.25,1), transform 0.65s cubic-bezier(0.25,0.8,0.25,1);
}
.fade-up.visible { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  .fade-up { opacity: 1; transform: none; transition: none; }
}

/* ── RESPONSIVE ─────────────────────────────────────────── */
@media (max-width: 900px) {
  .container { padding: 0 24px; }
  .about-inner { grid-template-columns: 1fr; gap: 48px; }
  .about-mark { display: none; }
  .focus-grid { grid-template-columns: 1fr; }
  .values-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
  .contact-inner { grid-template-columns: 1fr; gap: 48px; }
}

@media (max-width: 680px) {
  :root { --nav-h: 60px; }
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .nav-mobile.open { display: flex; }
  .hero { padding-top: calc(var(--nav-h) + 64px); padding-bottom: 64px; }
  .hero-headline { font-size: 34px; }
  .hero-body { font-size: 16px; }
  .br-lg { display: none; }
  .stats-inner { flex-direction: column; gap: 32px; }
  .stat-divider { width: 40px; height: 1px; }
  .about { padding: 72px 0; }
  .focus { padding: 72px 0; }
  .values { padding: 72px 0; }
  .values-grid { grid-template-columns: 1fr; gap: 32px; }
  .contact { padding: 72px 0; }
  .contact-form { padding: 28px 20px; }
  .form-row { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .footer-inner { flex-direction: column; align-items: flex-start; gap: 16px; }
}