/* ============================================================
   BRIERLEY SOLUTIONS — Main Stylesheet
   ============================================================ */

:root {
  --bg:        #0b0f1a;
  --bg-2:      #111827;
  --bg-card:   #161d2e;
  --border:    rgba(255,255,255,0.07);
  --accent:    #3b82f6;
  --accent-2:  #60a5fa;
  --accent-glow: rgba(59,130,246,0.25);
  --text:      #e2e8f0;
  --text-muted:#94a3b8;
  --white:     #ffffff;
  --radius:    12px;
  --radius-lg: 20px;
  --shadow:    0 4px 24px rgba(0,0,0,0.4);
  --font:      'Inter', system-ui, -apple-system, sans-serif;
  --max-w:     1200px;
  --transition: 0.25s ease;
}

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

html { scroll-behavior: smooth; }

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

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

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

.accent { color: var(--accent); }

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  transition: all var(--transition);
  cursor: pointer;
  border: none;
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: var(--white);
  box-shadow: 0 0 20px var(--accent-glow);
}
.btn-primary:hover { background: #2563eb; box-shadow: 0 0 30px rgba(59,130,246,0.45); transform: translateY(-1px); }
.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1.5px solid var(--border);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.btn-sm { padding: 8px 18px; font-size: 0.875rem; }
.btn-full { width: 100%; justify-content: center; }

/* ---- Section shared ---- */
section { padding: 96px 0; }

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 64px;
}
.section-header h2 { font-size: clamp(1.8rem, 3.5vw, 2.4rem); font-weight: 800; margin: 12px 0 16px; }
.section-header p { color: var(--text-muted); font-size: 1.05rem; }

.section-tag {
  display: inline-block;
  background: rgba(59,130,246,0.12);
  color: var(--accent-2);
  border: 1px solid rgba(59,130,246,0.25);
  border-radius: 99px;
  padding: 4px 14px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

/* ============================================================
   NAVBAR
   ============================================================ */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(11,15,26,0.8);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.05rem;
}
.logo-mark {
  width: 34px; height: 34px;
  background: var(--accent);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  font-weight: 800;
  color: #fff;
  flex-shrink: 0;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  font-size: 0.9rem;
}
.nav-links a:not(.btn) {
  color: var(--text-muted);
  transition: color var(--transition);
}
.nav-links a:not(.btn):hover { color: var(--white); }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 22px; height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}
.mobile-menu {
  display: flex;
  flex-direction: column;
  background: var(--bg-2);
  border-top: 1px solid var(--border);
  padding: 16px 24px 24px;
  gap: 4px;
}
.mobile-menu a {
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  font-size: 1rem;
  color: var(--text-muted);
}
.mobile-menu a:last-child { border-bottom: none; color: var(--accent); font-weight: 600; padding-top: 16px; }
.mobile-menu[hidden] { display: none; }

/* ============================================================
   HERO
   ============================================================ */
#hero {
  padding-top: 160px;
  padding-bottom: 100px;
  position: relative;
  overflow: hidden;
  min-height: 100vh;
  display: flex;
  align-items: center;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 60% at 60% 30%, rgba(59,130,246,0.12) 0%, transparent 70%),
    radial-gradient(ellipse 40% 40% at 20% 80%, rgba(59,130,246,0.06) 0%, transparent 60%);
}
.hero-grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black, transparent);
  pointer-events: none;
}
.hero-content {
  position: relative;
  z-index: 1;
  max-width: 780px;
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(59,130,246,0.1);
  border: 1px solid rgba(59,130,246,0.3);
  color: var(--accent-2);
  border-radius: 99px;
  padding: 6px 16px;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 24px;
}
.badge::before {
  content: '';
  display: block;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse-dot 2s infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}
#hero h1 {
  font-size: clamp(2.4rem, 6vw, 4rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}
.hero-sub {
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: var(--text-muted);
  max-width: 600px;
  margin-bottom: 40px;
  line-height: 1.75;
}
.hero-ctas {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 56px;
}
.hero-stats {
  display: flex;
  align-items: center;
  gap: 32px;
  flex-wrap: wrap;
}
.stat { display: flex; flex-direction: column; }
.stat-num { font-size: 1.8rem; font-weight: 800; color: var(--white); line-height: 1; }
.stat-label { font-size: 0.8rem; color: var(--text-muted); margin-top: 4px; }
.stat-divider { width: 1px; height: 40px; background: var(--border); }

/* ============================================================
   SERVICES
   ============================================================ */
#services { background: var(--bg-2); }

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}
.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  position: relative;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}
.service-card:hover {
  border-color: rgba(59,130,246,0.35);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.3);
}
.service-card.featured {
  border-color: rgba(59,130,246,0.5);
  background: linear-gradient(135deg, #161d2e 0%, #1a2540 100%);
  box-shadow: 0 0 40px rgba(59,130,246,0.1);
}
.featured-badge {
  position: absolute;
  top: -12px; right: 24px;
  background: var(--accent);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: 99px;
}
.service-icon {
  width: 52px; height: 52px;
  background: rgba(59,130,246,0.1);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}
.service-icon svg {
  width: 26px; height: 26px;
  color: var(--accent);
}
.service-card h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 10px; }
.service-card p { color: var(--text-muted); font-size: 0.9rem; line-height: 1.7; margin-bottom: 20px; }
.service-list { display: flex; flex-direction: column; gap: 8px; }
.service-list li {
  font-size: 0.875rem;
  color: var(--text-muted);
  padding-left: 18px;
  position: relative;
}
.service-list li::before {
  content: '';
  position: absolute;
  left: 0; top: 8px;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.7;
}

/* ============================================================
   ABOUT
   ============================================================ */
#about { background: var(--bg); }
.about-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
}
.about-visual { position: relative; }
.about-card-stack {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  position: relative;
}
.about-card-stack::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(59,130,246,0.3), transparent 60%);
  z-index: -1;
}
.about-card {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  transition: border-color var(--transition), transform var(--transition);
}
.about-card:hover { border-color: rgba(59,130,246,0.4); transform: translateX(4px); }
.about-card svg {
  width: 28px; height: 28px;
  flex-shrink: 0;
  color: var(--accent);
}
.about-card div { display: flex; flex-direction: column; gap: 3px; }
.about-card strong { font-size: 0.9rem; font-weight: 600; }
.about-card span { font-size: 0.8rem; color: var(--text-muted); }

.about-text .section-tag { margin-bottom: 12px; }
.about-text h2 { font-size: clamp(1.8rem, 3vw, 2.2rem); font-weight: 800; margin-bottom: 20px; line-height: 1.2; }
.about-text p { color: var(--text-muted); margin-bottom: 16px; line-height: 1.75; }
.about-certs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 28px 0 32px;
}
.cert-badge {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 14px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
}

/* ============================================================
   WHY US
   ============================================================ */
#why-us { background: var(--bg-2); }
.pillars-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 32px;
}
.pillar {
  padding: 32px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition), transform var(--transition);
}
.pillar:hover { border-color: rgba(59,130,246,0.4); transform: translateY(-3px); }
.pillar-num {
  font-size: 2.5rem;
  font-weight: 800;
  color: rgba(59,130,246,0.15);
  line-height: 1;
  margin-bottom: 16px;
  font-variant-numeric: tabular-nums;
}
.pillar h3 { font-size: 1rem; font-weight: 700; margin-bottom: 10px; }
.pillar p { font-size: 0.9rem; color: var(--text-muted); line-height: 1.7; }

/* ============================================================
   TESTIMONIALS
   ============================================================ */
#testimonials { background: var(--bg); }
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}
.testimonial-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  transition: border-color var(--transition), transform var(--transition);
}
.testimonial-card:hover { border-color: rgba(59,130,246,0.3); transform: translateY(-3px); }
.stars { color: #fbbf24; font-size: 1rem; letter-spacing: 2px; }
.testimonial-card > p { color: var(--text-muted); font-size: 0.95rem; line-height: 1.75; flex: 1; font-style: italic; }
.testimonial-author {
  display: flex;
  align-items: center;
  gap: 14px;
}
.author-avatar {
  width: 42px; height: 42px;
  border-radius: 50%;
  background: rgba(59,130,246,0.2);
  border: 2px solid rgba(59,130,246,0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent-2);
  flex-shrink: 0;
}
.testimonial-author div { display: flex; flex-direction: column; gap: 2px; }
.testimonial-author strong { font-size: 0.9rem; }
.testimonial-author span { font-size: 0.8rem; color: var(--text-muted); }

/* ============================================================
   CONTACT
   ============================================================ */
#contact {
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 100%);
}
.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 72px;
  align-items: start;
}
.contact-info .section-tag { margin-bottom: 12px; }
.contact-info h2 { font-size: clamp(1.8rem, 3vw, 2.2rem); font-weight: 800; margin-bottom: 20px; line-height: 1.2; }
.contact-info > p { color: var(--text-muted); line-height: 1.75; margin-bottom: 36px; }
.contact-details { display: flex; flex-direction: column; gap: 18px; }
.contact-item {
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--text-muted);
}
.contact-item svg { width: 20px; height: 20px; color: var(--accent); flex-shrink: 0; }

/* Form */
.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 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: 0.85rem; font-weight: 600; color: var(--text-muted); }
.form-group input,
.form-group select,
.form-group textarea {
  background: var(--bg-2);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 16px;
  color: var(--text);
  font-family: var(--font);
  font-size: 0.9rem;
  transition: border-color var(--transition);
  outline: none;
  width: 100%;
}
.form-group select { cursor: pointer; appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
}
.form-group select option { background: var(--bg-2); }
.form-group input::placeholder,
.form-group textarea::placeholder { color: rgba(148,163,184,0.5); }
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { border-color: var(--accent); }
.form-group textarea { resize: vertical; min-height: 100px; }
.form-note { font-size: 0.8rem; color: var(--text-muted); text-align: center; }
.form-success {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(34,197,94,0.1);
  border: 1px solid rgba(34,197,94,0.3);
  color: #86efac;
  border-radius: var(--radius);
  padding: 14px 18px;
  font-size: 0.9rem;
  font-weight: 500;
}
.form-success svg { width: 18px; height: 18px; flex-shrink: 0; }
.form-success[hidden] { display: none; }

/* ============================================================
   FOOTER
   ============================================================ */
footer { background: var(--bg); border-top: 1px solid var(--border); }
.footer-inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 64px;
  padding: 64px 24px 48px;
}
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p { color: var(--text-muted); font-size: 0.9rem; max-width: 320px; line-height: 1.7; }
.footer-links { display: flex; gap: 48px; }
.footer-col h4 { font-size: 0.85rem; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; color: var(--text-muted); margin-bottom: 16px; }
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col a { font-size: 0.9rem; color: var(--text-muted); transition: color var(--transition); }
.footer-col a:hover { color: var(--white); }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 20px 24px;
}
.footer-bottom .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
  .about-inner { grid-template-columns: 1fr; gap: 48px; }
  .contact-inner { grid-template-columns: 1fr; gap: 48px; }
  .footer-inner { grid-template-columns: 1fr; gap: 40px; }
}

@media (max-width: 768px) {
  section { padding: 72px 0; }
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .hero-ctas { flex-direction: column; align-items: flex-start; }
  .hero-stats { gap: 20px; }
  .form-row { grid-template-columns: 1fr; }
  .footer-links { flex-wrap: wrap; gap: 32px; }
  .footer-bottom .container { flex-direction: column; gap: 8px; text-align: center; }
}

@media (max-width: 480px) {
  .contact-form { padding: 24px; }
  .hero-stats .stat-divider { display: none; }
}

/* ============================================================
   SCROLL ANIMATIONS
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}