/* Excelsior Consulting Services — design tokens & shared styles */

:root {
  --excelsior-blue: #0A80FF;
  --excelsior-dark-blue: #0041DC;
  --excelsior-teal: #14CDE1;
  --excelsior-sky: #2DB4DC;

  --ink: #0A1628;
  --ink-soft: #4B5563;
  --border-soft: #E5E7EB;
  --bg-page: #FFFFFF;
  --bg-soft: #F7FAFF;

  --font-sans: 'Lato', -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;

  --shadow-card: 0 10px 15px -3px rgba(10, 22, 40, 0.08), 0 4px 6px -4px rgba(10, 22, 40, 0.08);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--bg-page);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.6;
}

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

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

.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Gradient / decorative utilities ---------- */

.gradient-text {
  background: linear-gradient(to right, var(--excelsior-blue), var(--excelsior-sky), var(--excelsior-teal));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.gradient-bg {
  background: linear-gradient(135deg, var(--excelsior-blue), var(--excelsior-teal));
}

.gradient-bg-dark {
  background: linear-gradient(135deg, var(--excelsior-dark-blue), var(--excelsior-blue));
}

.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  z-index: 0;
  pointer-events: none;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-20px); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in-up {
  animation: fadeInUp 0.7s ease-out forwards;
}

/* ---------- Navbar ---------- */

.site-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  transition: background-color 0.3s ease, box-shadow 0.3s ease;
  background: transparent;
}

.site-nav.scrolled {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(16px);
  box-shadow: 0 1px 2px rgba(10, 22, 40, 0.06);
}

.site-nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 84px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--ink);
}

.brand img { height: 40px; width: auto; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  font-weight: 600;
  color: var(--ink-soft);
  transition: color 0.2s ease;
}

.nav-links a:hover, .nav-links a.active { color: var(--excelsior-blue); }

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.menu-toggle svg { width: 28px; height: 28px; color: var(--ink); }

.mobile-menu {
  display: none;
  position: absolute;
  top: 76px;
  right: 24px;
  min-width: 240px;
  flex-direction: column;
  gap: 2px;
  padding: 12px;
  background: #fff;
  border: 1px solid var(--border-soft);
  border-radius: 16px;
  box-shadow: var(--shadow-card);
}

.mobile-menu.open { display: flex; }

.mobile-menu a {
  padding: 12px 14px;
  border-radius: 10px;
  font-weight: 600;
  color: var(--ink-soft);
}

.mobile-menu a:hover { background: var(--bg-soft); }

@media (max-width: 860px) {
  .nav-links, .nav-cta.desktop-only { display: none; }
  .menu-toggle { display: inline-flex; }
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 16px 28px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 1rem;
  border: 2px solid transparent;
  cursor: pointer;
  transition: opacity 0.2s ease, transform 0.2s ease;
  min-height: 56px;
}

.btn:hover { opacity: 0.92; transform: translateY(-1px); }

.btn-gradient {
  background: linear-gradient(135deg, var(--excelsior-blue), var(--excelsior-teal));
  color: #fff;
}

.btn-outline {
  background: transparent;
  border-color: var(--excelsior-blue);
  color: var(--excelsior-blue);
}

.btn-outline:hover { background: rgba(10, 128, 255, 0.06); }

.btn-sm { padding: 10px 20px; min-height: 44px; font-size: 0.95rem; }

/* ---------- Sections ---------- */

section { position: relative; overflow: hidden; }

.section { padding: 96px 0; }
.section-tight { padding: 64px 0; }
.section-soft { background: var(--bg-soft); }

.section-dark {
  background: linear-gradient(135deg, var(--excelsior-dark-blue), var(--ink));
  color: #fff;
}

.section-dark .ink-soft-dark { color: rgba(255,255,255,0.65); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border-radius: 999px;
  background: rgba(10, 128, 255, 0.1);
  color: var(--excelsior-blue);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  margin-bottom: 20px;
}

.section-dark .eyebrow {
  background: rgba(20, 205, 225, 0.15);
  color: var(--excelsior-teal);
}

h1, h2, h3, h4 { font-weight: 700; line-height: 1.2; margin: 0 0 16px; }

h1 { font-size: clamp(2.25rem, 5vw, 3.75rem); }
h2 { font-size: clamp(1.75rem, 3.5vw, 2.5rem); }
h3 { font-size: 1.35rem; }

.lede {
  font-size: 1.2rem;
  color: var(--ink-soft);
  max-width: 640px;
}

.section-dark .lede { color: rgba(255,255,255,0.72); }

.center { text-align: center; margin-left: auto; margin-right: auto; }

/* ---------- Grid / cards ---------- */

.grid {
  display: grid;
  gap: 32px;
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 860px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

.card {
  background: #fff;
  border: 1px solid var(--border-soft);
  border-radius: 24px;
  padding: 32px;
  box-shadow: var(--shadow-card);
}

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 20px;
  background: rgba(10, 128, 255, 0.1);
}

.glass-card {
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 24px;
  padding: 32px;
}

/* ---------- Stats ---------- */

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 56px;
}

@media (max-width: 700px) {
  .stats { grid-template-columns: repeat(2, 1fr); }
}

.stat-value {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
}

.stat-label {
  color: var(--ink-soft);
  font-size: 0.9rem;
  margin-top: 4px;
}

/* ---------- Certifications ---------- */

.cert-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 40px;
}

.cert-strip img {
  height: 84px;
  width: auto;
}

/* ---------- Forms ---------- */

.form-field { margin-bottom: 20px; }

.form-field label {
  display: block;
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: 8px;
  color: var(--ink-soft);
}

.form-field input,
.form-field textarea {
  width: 100%;
  padding: 14px 16px;
  border-radius: 12px;
  border: 1px solid var(--border-soft);
  font-family: var(--font-sans);
  font-size: 1rem;
  background: var(--bg-soft);
}

.form-field input:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--excelsior-blue);
  box-shadow: 0 0 0 3px rgba(10, 128, 255, 0.15);
}

.form-notice {
  padding: 16px 20px;
  border-radius: 14px;
  margin-bottom: 24px;
  font-weight: 600;
}

.form-notice.success { background: rgba(20, 205, 225, 0.12); color: #0a5b63; }
.form-notice.error { background: rgba(204, 41, 54, 0.1); color: #cc2936; }

/* ---------- Footer ---------- */

.site-footer {
  background: var(--ink);
  color: rgba(255,255,255,0.7);
  padding: 72px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
}

@media (max-width: 860px) {
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
}

.footer-grid h4 { color: #fff; font-size: 1rem; margin-bottom: 16px; }

.footer-grid ul { list-style: none; margin: 0; padding: 0; }
.footer-grid li { margin-bottom: 10px; }

.footer-grid a:hover { color: #fff; }

.social-row {
  display: flex;
  gap: 12px;
  margin-top: 20px;
}

.social-row a {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s ease;
}

.social-row a:hover { background: var(--excelsior-blue); }

.social-row svg { width: 18px; height: 18px; }

.footer-bottom {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.1);
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: space-between;
  font-size: 0.85rem;
}

/* ---------- FAQ ---------- */

.faq-item {
  border-bottom: 1px solid var(--border-soft);
  padding: 24px 0;
}

.faq-item h3 { font-size: 1.05rem; margin-bottom: 8px; }
.faq-item p { color: var(--ink-soft); margin: 0; }

/* ---------- Utility ---------- */

.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.text-center { text-align: center; }
.max-w { max-width: 720px; margin-left: auto; margin-right: auto; }

.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 700;
  color: var(--excelsior-blue);
}