/* ═══════════════════════════════════════════
   XENITOR — Brand Design System
   Deep Blue #0A3D62 · Teal #00A99D · Charcoal #2F4F4F
   Montserrat headings · Inter body
   ═══════════════════════════════════════════ */

:root {
  --blue:        #0A3D62;
  --blue-dark:   #072d48;
  --blue-mid:    #0d4f7e;
  --teal:        #00A99D;
  --teal-dark:   #008a80;
  --teal-light:  #e0f7f5;
  --charcoal:    #2F4F4F;
  --white:       #ffffff;
  --bg:          #f5f8fa;
  --bg-card:     #ffffff;
  --border:      #dde6ed;
  --border-light:#eaf0f5;
  --ink:         #0d1f2d;
  --ink-body:    #3a4a58;
  --ink-muted:   #6a7d8e;
  --ink-faint:   #a0b0bc;

  --shadow-sm:  0 1px 4px rgba(10,61,98,0.07);
  --shadow-md:  0 4px 20px rgba(10,61,98,0.10);
  --shadow-lg:  0 16px 48px rgba(10,61,98,0.12);
  --shadow-card:0 2px 12px rgba(10,61,98,0.08);

  --radius:    10px;
  --radius-lg: 18px;
  --nav-h:     70px;
  --max-w:     1140px;
  --t:         0.22s ease;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }

body {
  background: var(--bg);
  color: var(--ink-body);
  font-family: 'Inter', sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; font-family: inherit; }

/* ─── NAV ─── */
#navbar {
  position: fixed; top: 0; left: 0; right: 0;
  height: var(--nav-h);
  display: flex; align-items: center;
  padding: 0 5%;
  background: rgba(255,255,255,0.93);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  z-index: 100;
  transition: border-color var(--t), box-shadow var(--t);
}
#navbar.scrolled {
  border-bottom-color: var(--border);
  box-shadow: 0 2px 16px rgba(10,61,98,0.07);
}

.logo {
  display: flex; align-items: center; gap: 10px;
  margin-right: auto; text-decoration: none;
}
.logo-mark { width: 32px; height: 32px; flex-shrink: 0; }
.logo-wordmark {
  font-family: 'Montserrat', sans-serif;
  font-weight: 800; font-size: 1.25rem;
  color: var(--blue); letter-spacing: -0.03em;
}

.nav-links { display: flex; gap: 2.5rem; margin-right: 2rem; }
.nav-links a {
  font-size: 0.875rem; font-weight: 500;
  color: var(--ink-muted); letter-spacing: 0.01em;
  transition: color var(--t);
}
.nav-links a:hover, .nav-links a.active { color: var(--blue); }
.nav-links a.active { font-weight: 600; }

.nav-cta {
  background: var(--teal); color: var(--white);
  border: none; padding: 0.5rem 1.25rem;
  border-radius: 6px; font-size: 0.875rem; font-weight: 600;
  transition: background var(--t), transform var(--t), box-shadow var(--t);
  letter-spacing: 0.01em;
}
.nav-cta:hover {
  background: var(--teal-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(0,169,157,0.3);
}

.hamburger {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; padding: 4px;
}
.hamburger span {
  display: block; width: 22px; height: 2px;
  background: var(--blue); border-radius: 2px;
  transition: all 0.25s;
}

.mobile-menu {
  display: none; position: fixed;
  top: var(--nav-h); left: 0; right: 0;
  background: var(--white); border-bottom: 1px solid var(--border);
  padding: 1.5rem 5%; flex-direction: column; gap: 1.25rem;
  z-index: 99; box-shadow: var(--shadow-md);
}
.mobile-menu a { font-size: 1rem; font-weight: 500; color: var(--ink); }
.mobile-menu.open { display: flex; }

/* ─── PAGE SYSTEM ─── */
.page { display: none; min-height: 100vh; padding-top: var(--nav-h); animation: pageIn 0.35s ease; }
.page.active { display: block; }
@keyframes pageIn { from { opacity:0; transform:translateY(8px); } to { opacity:1; transform:none; } }

/* ─── SHARED ─── */
.section-inner { max-width: var(--max-w); margin: 0 auto; padding: 0 5%; }

.section-tag {
  display: inline-flex; align-items: center; gap: 7px;
  font-size: 0.7rem; font-weight: 600;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--teal-dark); background: var(--teal-light);
  padding: 0.3rem 0.85rem; border-radius: 100px;
  margin-bottom: 1.1rem;
}
.section-tag::before {
  content: ''; width: 5px; height: 5px;
  border-radius: 50%; background: var(--teal); flex-shrink: 0;
}

.section-header { margin-bottom: 3rem; max-width: 560px; }
.section-header h2 {
  font-family: 'Montserrat', sans-serif;
  font-size: clamp(1.8rem, 2.8vw, 2.5rem);
  font-weight: 800; color: var(--blue);
  line-height: 1.15; letter-spacing: -0.03em;
  margin-bottom: 0.9rem;
}
.section-header p { color: var(--ink-muted); font-size: 1.05rem; }

/* Buttons */
.btn-primary {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  background: var(--teal); color: var(--white); border: none;
  padding: 0.8rem 2rem; border-radius: 8px;
  font-size: 0.95rem; font-weight: 600; letter-spacing: 0.01em;
  transition: background var(--t), transform var(--t), box-shadow var(--t);
}
.btn-primary:hover {
  background: var(--teal-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,169,157,0.28);
}
.btn-primary.btn-lg { padding: 1rem 2.5rem; font-size: 1rem; }
.btn-primary.btn-full { width: 100%; }

.btn-ghost-white {
  background: none; color: rgba(255,255,255,0.85); border: none;
  font-size: 0.95rem; font-weight: 500; padding: 0.8rem 0;
  transition: color var(--t);
}
.btn-ghost-white:hover { color: #fff; }

.btn-spinner { width: 20px; height: 20px; animation: spin 0.8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ─── HERO ─── */
.hero {
  background: var(--blue); position: relative; overflow: hidden;
  padding: clamp(5rem, 9vw, 8rem) 5% clamp(4rem, 8vw, 7rem);
}
.hero-bg-grid {
  position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 52px 52px;
}
.hero-bg-grid::after {
  content: ''; position: absolute;
  top: -30%; right: -10%; width: 55%; height: 130%;
  background: radial-gradient(ellipse, rgba(0,169,157,0.13) 0%, transparent 65%);
}

.hero-inner {
  position: relative; z-index: 1;
  max-width: var(--max-w); margin: 0 auto;
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 4rem; align-items: center;
}

.hero-eyebrow {
  font-size: 0.72rem; font-weight: 600;
  letter-spacing: 0.09em; text-transform: uppercase;
  color: var(--teal); border: 1px solid rgba(0,169,157,0.35);
  border-radius: 100px; padding: 0.3rem 1rem;
  display: inline-block; margin-bottom: 1.75rem;
}

.hero-title {
  font-family: 'Montserrat', sans-serif;
  font-size: clamp(2.6rem, 4.5vw, 4rem);
  font-weight: 900; color: var(--white);
  line-height: 1.08; letter-spacing: -0.04em;
  margin-bottom: 1.5rem;
}
.hero-accent { color: var(--teal); }

.hero-desc {
  font-size: 1.05rem; color: rgba(255,255,255,0.7);
  font-weight: 300; line-height: 1.72;
  margin-bottom: 2.5rem; max-width: 460px;
}

.hero-actions { display: flex; gap: 1.5rem; align-items: center; flex-wrap: wrap; }

/* Hero cards */
.hero-cards { display: flex; flex-direction: column; gap: 1rem; }
.hcard {
  display: flex; align-items: center; gap: 1rem;
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 14px; padding: 1.25rem 1.5rem;
  transition: background var(--t), transform var(--t);
}
.hcard:hover { background: rgba(255,255,255,0.1); transform: translateX(5px); }
.hcard.hcard-teal { background: rgba(0,169,157,0.15); border-color: rgba(0,169,157,0.3); }
.hcard-icon {
  width: 40px; height: 40px; flex-shrink: 0;
  background: rgba(255,255,255,0.1); border-radius: 9px;
  display: flex; align-items: center; justify-content: center;
  color: var(--teal);
}
.hcard.hcard-teal .hcard-icon { background: rgba(0,169,157,0.25); }
.hcard-icon svg { width: 20px; height: 20px; }
.hcard-title { font-weight: 600; font-size: 0.9rem; color: var(--white); margin-bottom: 2px; }
.hcard-sub   { font-size: 0.78rem; color: rgba(255,255,255,0.5); }

/* ─── SERVICES ─── */
.services { padding: clamp(4rem, 7vw, 6.5rem) 0; background: var(--white); }

.services-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem;
}
.svc-card {
  background: var(--bg); border: 1px solid var(--border-light);
  border-radius: var(--radius-lg); padding: 2.25rem 2rem;
  position: relative; overflow: hidden;
  transition: transform var(--t), box-shadow var(--t);
  box-shadow: var(--shadow-sm);
}
.svc-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0;
  height: 3px; background: var(--border-light);
  transition: background var(--t);
}
.svc-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.svc-card:hover::before { background: var(--teal); }

.svc-card.svc-featured { background: var(--blue); border-color: var(--blue); }
.svc-card.svc-featured::before { background: var(--teal); }
.svc-card.svc-featured h3 { color: var(--white); }
.svc-card.svc-featured p  { color: rgba(255,255,255,0.62); }
.svc-card.svc-featured .svc-num { color: rgba(255,255,255,0.2); }
.svc-card.svc-featured .svc-tags span {
  background: rgba(0,169,157,0.18); color: var(--teal);
}

.svc-num {
  font-family: 'Montserrat', sans-serif;
  font-size: 2.5rem; font-weight: 900;
  color: var(--border); line-height: 1;
  margin-bottom: 1rem; letter-spacing: -0.04em;
}
.svc-card h3 {
  font-family: 'Montserrat', sans-serif;
  font-size: 1.1rem; font-weight: 700;
  color: var(--blue); margin-bottom: 0.85rem;
  letter-spacing: -0.02em; line-height: 1.3;
}
.svc-card p { font-size: 0.9rem; color: var(--ink-muted); line-height: 1.72; margin-bottom: 1.5rem; }
.svc-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.svc-tags span {
  font-size: 0.72rem; font-weight: 500;
  background: var(--teal-light); color: var(--teal-dark);
  padding: 0.25rem 0.7rem; border-radius: 100px;
  letter-spacing: 0.02em;
}

/* ─── WHY ─── */
.why { padding: clamp(4rem, 7vw, 6.5rem) 0; }
.why-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 5rem; align-items: start; }
.why-left h2 {
  font-family: 'Montserrat', sans-serif;
  font-size: clamp(1.8rem, 2.6vw, 2.4rem);
  font-weight: 800; color: var(--blue);
  line-height: 1.15; letter-spacing: -0.03em;
  margin-bottom: 1rem;
}
.why-left p { color: var(--ink-muted); font-size: 1.02rem; margin-bottom: 2rem; line-height: 1.72; }

.why-right { display: flex; flex-direction: column; gap: 1.75rem; padding-top: 0.5rem; }
.why-item { display: flex; gap: 1.1rem; }
.why-dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--teal); flex-shrink: 0; margin-top: 5px;
}
.why-item h4 {
  font-family: 'Montserrat', sans-serif;
  font-size: 0.95rem; font-weight: 700;
  color: var(--blue); margin-bottom: 0.35rem;
  letter-spacing: -0.01em;
}
.why-item p { font-size: 0.88rem; color: var(--ink-muted); line-height: 1.65; }

/* ─── CTA STRIP ─── */
.cta-strip {
  background: linear-gradient(135deg, var(--blue) 0%, var(--charcoal) 100%);
  padding: clamp(3.5rem, 6vw, 5rem) 5%;
  overflow: hidden; position: relative;
}
.cta-strip::after {
  content: ''; position: absolute; right: -5%; top: 50%; transform: translateY(-50%);
  width: 40%; height: 200%;
  background: radial-gradient(ellipse, rgba(0,169,157,0.14) 0%, transparent 60%);
  pointer-events: none;
}
.cta-strip-inner {
  max-width: var(--max-w); margin: 0 auto;
  display: flex; align-items: center;
  justify-content: space-between; gap: 2rem; flex-wrap: wrap;
  position: relative; z-index: 1;
}
.cta-strip-inner h2 {
  font-family: 'Montserrat', sans-serif;
  font-size: clamp(1.5rem, 2.2vw, 2rem);
  font-weight: 800; color: var(--white);
  letter-spacing: -0.02em; margin-bottom: 0.4rem;
}
.cta-strip-inner p { color: rgba(255,255,255,0.6); font-size: 0.95rem; }

/* ─── PAGE HERO (About) ─── */
.page-hero { background: var(--blue); padding: clamp(5rem, 8vw, 7rem) 5%; }
.page-hero-inner {
  max-width: 720px; margin: 0 auto;
}
.page-hero h1 {
  font-family: 'Montserrat', sans-serif;
  font-size: clamp(2.4rem, 4vw, 3.6rem);
  font-weight: 900; color: var(--white);
  line-height: 1.1; letter-spacing: -0.04em;
  margin-bottom: 1.25rem;
}
.page-hero p { font-size: 1.08rem; color: rgba(255,255,255,0.68); font-weight: 300; line-height: 1.72; }
.page-hero .section-tag { color: var(--teal); background: rgba(0,169,157,0.15); }

/* ─── ABOUT STORY ─── */
.about-story { padding: clamp(4rem, 7vw, 6.5rem) 0; background: var(--white); }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 5rem; align-items: start; }

.about-text h2 {
  font-family: 'Montserrat', sans-serif;
  font-size: clamp(1.7rem, 2.4vw, 2.2rem);
  font-weight: 800; color: var(--blue);
  letter-spacing: -0.03em; margin-bottom: 1.5rem;
}
.about-text p { color: var(--ink-muted); font-size: 0.97rem; line-height: 1.78; margin-bottom: 1.2rem; }

.about-pillars { display: flex; flex-direction: column; gap: 2rem; }
.pillar { display: flex; gap: 1.25rem; }
.pillar-num {
  font-family: 'Montserrat', sans-serif;
  font-size: 1.6rem; font-weight: 900;
  color: var(--border); line-height: 1; flex-shrink: 0;
  letter-spacing: -0.04em; width: 40px;
}
.pillar h4 {
  font-family: 'Montserrat', sans-serif;
  font-size: 0.95rem; font-weight: 700; color: var(--blue);
  margin-bottom: 0.35rem; letter-spacing: -0.01em;
}
.pillar p { font-size: 0.88rem; color: var(--ink-muted); line-height: 1.65; }

/* ─── CONTACT ─── */
.contact-section { padding: clamp(4rem, 7vw, 6rem) 5%; min-height: calc(100vh - var(--nav-h)); }
.contact-inner {
  max-width: var(--max-w); margin: 0 auto;
  display: grid; grid-template-columns: 1fr 1.4fr; gap: 5rem; align-items: start;
}

.contact-left h1 {
  font-family: 'Montserrat', sans-serif;
  font-size: clamp(2rem, 3vw, 2.8rem);
  font-weight: 900; color: var(--blue);
  line-height: 1.12; letter-spacing: -0.04em;
  margin-bottom: 1.25rem;
}
.contact-left p { color: var(--ink-muted); font-size: 0.97rem; line-height: 1.72; margin-bottom: 2.5rem; }

.contact-info { display: flex; flex-direction: column; gap: 1rem; }
.contact-info-item {
  display: flex; align-items: center; gap: 0.75rem;
  font-size: 0.9rem; color: var(--ink-body); font-weight: 500;
}
.contact-info-item svg { width: 18px; height: 18px; color: var(--teal); flex-shrink: 0; }

/* Form */
.contact-form { display: flex; flex-direction: column; gap: 1.25rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; }
.form-group { display: flex; flex-direction: column; gap: 0.5rem; }

label {
  font-size: 0.83rem; font-weight: 600;
  color: var(--ink); letter-spacing: 0.01em;
}
.req { color: var(--teal); }

input, textarea, select {
  width: 100%; padding: 0.75rem 1rem;
  border: 1.5px solid var(--border);
  border-radius: var(--radius); background: var(--white);
  font-family: 'Inter', sans-serif; font-size: 0.925rem;
  color: var(--ink); transition: border-color var(--t), box-shadow var(--t);
  outline: none; appearance: none;
}
input:focus, textarea:focus, select:focus {
  border-color: var(--teal);
  box-shadow: 0 0 0 3px rgba(0,169,157,0.12);
}
input::placeholder, textarea::placeholder { color: var(--ink-faint); }
textarea { resize: vertical; line-height: 1.6; }

.select-wrap { position: relative; }
.select-wrap select { padding-right: 2.5rem; cursor: pointer; }
.select-arrow {
  position: absolute; right: 0.9rem; top: 50%; transform: translateY(-50%);
  width: 16px; height: 16px; color: var(--ink-muted); pointer-events: none;
}

.form-feedback {
  display: flex; align-items: center; gap: 0.75rem;
  padding: 1rem 1.25rem; border-radius: var(--radius);
  font-size: 0.9rem; font-weight: 500;
}
.form-feedback svg { width: 20px; height: 20px; flex-shrink: 0; }
.form-success { background: var(--teal-light); color: var(--teal-dark); }
.form-error   { background: #fdecea; color: #c0392b; }

/* ─── FOOTER ─── */
footer { background: var(--blue); padding: 3.5rem 5% 0; }
.footer-inner {
  max-width: var(--max-w); margin: 0 auto;
  display: grid; grid-template-columns: 1.4fr 1fr; gap: 4rem;
  padding-bottom: 3rem; border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer-brand .logo-wordmark { color: var(--white); }
.footer-brand p {
  margin-top: 1rem; font-size: 0.875rem;
  color: rgba(255,255,255,0.45); line-height: 1.65;
}
.footer-links { display: flex; gap: 3rem; }
.footer-col { display: flex; flex-direction: column; gap: 0.75rem; }
.footer-col-title {
  font-size: 0.7rem; font-weight: 700;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: rgba(255,255,255,0.35); margin-bottom: 0.25rem;
}
.footer-col a, .footer-col span {
  font-size: 0.875rem; color: rgba(255,255,255,0.6);
  transition: color var(--t);
}
.footer-col a:hover { color: var(--teal); }
.footer-bottom {
  max-width: var(--max-w); margin: 0 auto;
  display: flex; justify-content: space-between; align-items: center;
  padding: 1.25rem 0;
  font-size: 0.8rem; color: rgba(255,255,255,0.3);
}

/* ─── RESPONSIVE ─── */
@media (max-width: 900px) {
  .nav-links, .nav-cta { display: none; }
  .hamburger { display: flex; }

  .hero-inner         { grid-template-columns: 1fr; gap: 3rem; }
  .hero-cards         { display: grid; grid-template-columns: 1fr; }
  .services-grid      { grid-template-columns: 1fr; }
  .why-inner          { grid-template-columns: 1fr; gap: 3rem; }
  .about-grid         { grid-template-columns: 1fr; gap: 3rem; }
  .contact-inner      { grid-template-columns: 1fr; gap: 3rem; }
  .footer-inner       { grid-template-columns: 1fr; gap: 2.5rem; }
  .footer-links       { flex-wrap: wrap; gap: 2rem; }
  .cta-strip-inner    { flex-direction: column; align-items: flex-start; }
  .form-row           { grid-template-columns: 1fr; }
  .footer-bottom      { flex-direction: column; gap: 0.5rem; text-align: center; }
}

@media (max-width: 600px) {
  .hero-title { font-size: 2.2rem; }
  .hcard      { flex-direction: column; align-items: flex-start; }
  .footer-links { flex-direction: column; gap: 1.5rem; }
}