/* ============================================
   ARCWELL ADVISORY — STYLESHEET
   Dark premium · editorial · enterprise-grade
   ============================================ */

:root {
  --navy:      #0d1117;
  --navy-2:    #111827;
  --navy-3:    #1a2332;
  --navy-4:    #1e2d45;
  --teal:      #1d9e75;
  --teal-light:#9FE1CB;
  --teal-dim:  #0f6e56;
  --blue:      #185FA5;
  --blue-light:#6BABDF;
  --purple:    #6c5ce7;
  --purple-light:#b2aef5;
  --amber:     #e8a020;
  --white:     #ffffff;
  --off-white: #f0ede8;
  --text-1:    #e8e6e1;
  --text-2:    #9ca3af;
  --text-3:    #6b7280;
  --border:    rgba(255,255,255,0.07);
  --border-2:  rgba(255,255,255,0.12);
  --font-serif: 'Instrument Serif', Georgia, serif;
  --font-sans:  'DM Sans', system-ui, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--navy);
  color: var(--text-1);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ---- UTILS ---- */
.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* ---- NAV ---- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 1.25rem 0;
  transition: background 0.3s, backdrop-filter 0.3s, border-color 0.3s;
  border-bottom: 1px solid transparent;
}

.nav.scrolled {
  background: rgba(13,17,23,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-color: var(--border);
}

.nav-inner {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
}

.logo-mark {
  width: 34px;
  height: 34px;
  background: var(--teal);
  color: var(--navy);
  border-radius: 7px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 0.05em;
  flex-shrink: 0;
}

.logo-text {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-1);
  letter-spacing: -0.01em;
}

.nav-links {
  display: flex;
  list-style: none;
  align-items: center;
  gap: 2.5rem;
}

.nav-links a {
  color: var(--text-2);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 400;
  transition: color 0.2s;
}

.nav-links a:hover { color: var(--text-1); }

.nav-cta {
  background: var(--teal) !important;
  color: var(--navy) !important;
  padding: 0.5rem 1.25rem !important;
  border-radius: 6px;
  font-weight: 500 !important;
  transition: background 0.2s, opacity 0.2s !important;
}

.nav-cta:hover { opacity: 0.88; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--text-2);
  transition: all 0.2s;
}

/* ---- HERO ---- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: 8rem 0 4rem;
}

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

.grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, black 30%, transparent 100%);
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.18;
}

.orb-1 {
  width: 500px; height: 500px;
  background: var(--teal);
  top: -100px; right: -80px;
}

.orb-2 {
  width: 380px; height: 380px;
  background: var(--blue);
  bottom: 0; left: -60px;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 760px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--teal-light);
  border: 1px solid rgba(29,158,117,0.25);
  background: rgba(29,158,117,0.08);
  padding: 0.35rem 0.9rem;
  border-radius: 40px;
  margin-bottom: 1.75rem;
  opacity: 0;
  animation: fadeUp 0.6s ease 0.1s forwards;
}

.hero-badge::before {
  content: '';
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--teal);
  display: block;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2.8rem, 6vw, 5rem);
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--white);
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: fadeUp 0.7s ease 0.2s forwards;
}

.hero-title em {
  font-style: italic;
  color: var(--teal-light);
}

.hero-sub {
  font-size: 1.1rem;
  color: var(--text-2);
  max-width: 580px;
  line-height: 1.7;
  margin-bottom: 2.5rem;
  font-weight: 300;
  opacity: 0;
  animation: fadeUp 0.7s ease 0.35s forwards;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 4rem;
  opacity: 0;
  animation: fadeUp 0.7s ease 0.45s forwards;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 2rem;
  opacity: 0;
  animation: fadeUp 0.7s ease 0.55s forwards;
}

.stat { text-align: left; }

.stat-num {
  display: block;
  font-family: var(--font-serif);
  font-size: 1.6rem;
  color: var(--white);
  line-height: 1;
  margin-bottom: 0.2rem;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border-2);
}

.hero-scroll {
  position: absolute;
  bottom: 2.5rem;
  right: 3rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  z-index: 2;
}

.hero-scroll span {
  font-size: 0.7rem;
  color: var(--text-3);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  writing-mode: vertical-lr;
}

.scroll-line {
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, var(--teal), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

/* ---- BUTTONS ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: 7px;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all 0.2s;
  letter-spacing: -0.01em;
}

.btn-primary {
  background: var(--teal);
  color: var(--navy);
}

.btn-primary:hover {
  background: var(--teal-light);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--text-1);
  border: 1px solid var(--border-2);
}

.btn-ghost:hover {
  border-color: rgba(255,255,255,0.3);
  background: rgba(255,255,255,0.04);
}

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

/* ---- SECTION COMMONS ---- */
.section-tag {
  display: block;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 1rem;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--white);
}

.section-title em {
  font-style: italic;
  color: var(--teal-light);
}

.section-header {
  margin-bottom: 3.5rem;
}

/* ---- SERVICES ---- */
.services {
  padding: 7rem 0;
  background: var(--navy-2);
  border-top: 1px solid var(--border);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5px;
  background: var(--border);
  border-radius: 14px;
  overflow: hidden;
}

.service-card {
  background: var(--navy-2);
  padding: 2.5rem;
  position: relative;
  transition: background 0.3s;
}

.service-card:hover { background: var(--navy-3); }

.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  border-radius: 0;
}

.service-blue::before  { background: linear-gradient(90deg, var(--blue), var(--blue-light)); }
.service-teal::before  { background: linear-gradient(90deg, var(--teal-dim), var(--teal)); }
.service-purple::before { background: linear-gradient(90deg, var(--purple), var(--purple-light)); }

.service-icon {
  margin-bottom: 1rem;
}

.service-blue .service-icon  { color: var(--blue-light); }
.service-teal .service-icon  { color: var(--teal-light); }
.service-purple .service-icon { color: var(--purple-light); }

.service-num {
  font-family: var(--font-serif);
  font-size: 3rem;
  color: rgba(255,255,255,0.06);
  position: absolute;
  top: 1.5rem;
  right: 2rem;
  line-height: 1;
  user-select: none;
}

.service-title {
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--white);
  margin-bottom: 0.75rem;
  letter-spacing: -0.01em;
  line-height: 1.3;
}

.service-desc {
  font-size: 0.88rem;
  color: var(--text-2);
  line-height: 1.7;
  margin-bottom: 1.5rem;
  font-weight: 300;
}

.service-list {
  list-style: none;
  margin-bottom: 1.5rem;
}

.service-list li {
  font-size: 0.83rem;
  color: var(--text-2);
  padding: 0.35rem 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.service-list li::before {
  content: '';
  width: 4px; height: 4px;
  border-radius: 50%;
  flex-shrink: 0;
}

.service-blue .service-list li::before  { background: var(--blue-light); }
.service-teal .service-list li::before  { background: var(--teal-light); }
.service-purple .service-list li::before { background: var(--purple-light); }

.service-tags { display: flex; flex-wrap: wrap; gap: 0.4rem; }

.tag {
  font-size: 0.7rem;
  font-weight: 500;
  padding: 0.2rem 0.6rem;
  border-radius: 20px;
  letter-spacing: 0.04em;
}

.service-blue .tag  { background: rgba(24,95,165,0.18); color: var(--blue-light); }
.service-teal .tag  { background: rgba(29,158,117,0.15); color: var(--teal-light); }
.service-purple .tag { background: rgba(108,92,231,0.18); color: var(--purple-light); }

/* ---- APPROACH ---- */
.approach {
  padding: 7rem 0;
  background: var(--navy);
  border-top: 1px solid var(--border);
}

.approach-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
}

.approach-body {
  color: var(--text-2);
  line-height: 1.7;
  margin-top: 1.25rem;
  font-weight: 300;
}

.step-list { display: flex; flex-direction: column; gap: 0; }

.step {
  display: flex;
  gap: 1.5rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--border);
  position: relative;
}

.step:first-child { border-top: 1px solid var(--border); }

.step-marker {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--teal-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 0.1rem;
}

.step-marker span {
  font-size: 0.8rem;
  color: var(--teal-light);
  font-weight: 500;
}

.step-body h4 {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--white);
  margin-bottom: 0.35rem;
}

.step-body p {
  font-size: 0.85rem;
  color: var(--text-2);
  line-height: 1.6;
  font-weight: 300;
}

/* ---- WHY ---- */
.why {
  padding: 7rem 0;
  background: var(--navy-2);
  border-top: 1px solid var(--border);
}

.why-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--border);
  border-radius: 14px;
  overflow: hidden;
  margin-top: 3.5rem;
}

.why-card {
  background: var(--navy-2);
  padding: 2.5rem;
  transition: background 0.3s;
}

.why-card:hover { background: var(--navy-3); }

.why-icon {
  font-size: 1.1rem;
  color: var(--teal-dim);
  margin-bottom: 1rem;
}

.why-card h4 {
  font-size: 1rem;
  font-weight: 500;
  color: var(--white);
  margin-bottom: 0.75rem;
  letter-spacing: -0.01em;
}

.why-card p {
  font-size: 0.87rem;
  color: var(--text-2);
  line-height: 1.7;
  font-weight: 300;
}

/* ---- CONTACT ---- */
.contact {
  padding: 7rem 0;
  background: var(--navy);
  border-top: 1px solid var(--border);
}

.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
}

.contact-body {
  color: var(--text-2);
  line-height: 1.7;
  margin: 1.25rem 0 2.5rem;
  font-weight: 300;
}

.contact-details { display: flex; flex-direction: column; gap: 1.25rem; }

.contact-detail { display: flex; flex-direction: column; gap: 0.2rem; }

.detail-label {
  font-size: 0.7rem;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.detail-value {
  font-size: 0.95rem;
  color: var(--text-1);
  text-decoration: none;
  transition: color 0.2s;
}

a.detail-value:hover { color: var(--teal-light); }

/* ---- FORM ---- */
.contact-form {
  background: var(--navy-3);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 2.5rem;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: 0.78rem;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.4rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border-2);
  border-radius: 7px;
  padding: 0.7rem 1rem;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  color: var(--text-1);
  transition: border-color 0.2s, background 0.2s;
  outline: none;
  -webkit-appearance: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--teal-dim);
  background: rgba(255,255,255,0.06);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-3);
}

.form-group select option {
  background: var(--navy-2);
  color: var(--text-1);
}

.form-group textarea { resize: vertical; min-height: 100px; }

.form-note {
  font-size: 0.75rem;
  color: var(--text-3);
  text-align: center;
  margin-top: 0.75rem;
}

/* ---- FOOTER ---- */
.footer {
  padding: 2.5rem 0;
  border-top: 1px solid var(--border);
  background: var(--navy-2);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.footer-tagline {
  font-size: 0.78rem;
  color: var(--text-3);
  margin-top: 0.35rem;
}

.footer-links {
  display: flex;
  gap: 2rem;
}

.footer-links a {
  font-size: 0.83rem;
  color: var(--text-3);
  text-decoration: none;
  transition: color 0.2s;
}

.footer-links a:hover { color: var(--text-1); }

.footer-legal {
  font-size: 0.75rem;
  color: var(--text-3);
  width: 100%;
  text-align: center;
  border-top: 1px solid var(--border);
  padding-top: 1.5rem;
  margin-top: 0.5rem;
}

/* ---- ANIMATIONS ---- */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.4; transform: scaleY(0.8); transform-origin: top; }
  50%       { opacity: 1; transform: scaleY(1); }
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---- RESPONSIVE ---- */
@media (max-width: 900px) {
  .services-grid { grid-template-columns: 1fr; }
  .approach-inner { grid-template-columns: 1fr; gap: 3rem; }
  .why-grid { grid-template-columns: 1fr; }
  .contact-inner { grid-template-columns: 1fr; gap: 3rem; }
  .hero-scroll { display: none; }
}

@media (max-width: 640px) {
  .nav-links {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: var(--navy);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2.5rem;
    z-index: 99;
  }

  .nav-links.open { display: flex; }

  .nav-links a { font-size: 1.2rem; }

  .nav-toggle { display: flex; z-index: 101; }

  .hero-stats { flex-direction: column; align-items: flex-start; gap: 1rem; }
  .stat-divider { width: 40px; height: 1px; }

  .footer-inner { flex-direction: column; align-items: flex-start; }
  .footer-links { flex-wrap: wrap; gap: 1rem; }

  .contact-form { padding: 1.5rem; }
  .service-card { padding: 1.75rem; }
  .why-card { padding: 1.75rem; }
}