/* ==========================================================================
   ABELIA SOLUTION — Components
   ========================================================================== */

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

.navbar {
  position: sticky;
  top: 0;
  z-index: var(--z-nav);
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background var(--duration-base) var(--ease-out), border-color var(--duration-base) var(--ease-out), backdrop-filter var(--duration-base) var(--ease-out);
}
.navbar.scrolled {
  background: rgba(2, 2, 3, 0.72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--color-border);
}
.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--color-text);
}
.brand-mark { color: var(--color-accent); flex-shrink: 0; }
.brand-text {
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.35;
  letter-spacing: 0.06em;
}
.brand-text b { color: var(--color-text); font-weight: 500; }

.nav-desktop ul { display: flex; align-items: center; gap: var(--space-8); }
.nav-desktop a {
  font-size: 14px;
  color: var(--color-text-secondary);
  transition: color var(--duration-fast) ease;
  position: relative;
  padding: 6px 0;
}
.nav-desktop a:hover, .nav-desktop a.active { color: var(--color-text); }
.nav-desktop a.active::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 1px;
  background: var(--color-accent);
}

.navbar-actions { display: flex; align-items: center; gap: var(--space-5); }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px; height: 40px;
  background: transparent;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  width: 16px; height: 1.5px;
  background: var(--color-text);
  margin: 0 auto;
  transition: transform var(--duration-fast) ease, opacity var(--duration-fast) ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.nav-mobile {
  border-top: 1px solid var(--color-border);
  background: var(--color-bg);
}
.nav-mobile[hidden] { display: none; }
.nav-mobile ul { display: flex; flex-direction: column; padding: var(--space-4) var(--container-padding) var(--space-6); gap: var(--space-1); }
.nav-mobile a:not(.btn) { display: block; padding: 12px 4px; font-size: 15px; color: var(--color-text-secondary); border-bottom: 1px solid var(--color-border); }
.nav-mobile a.active { color: var(--color-accent-text); }
.nav-mobile .btn { margin-top: var(--space-4); text-align: center; justify-content: center; }

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

.btn {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 15px 26px;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background var(--duration-fast) ease, border-color var(--duration-fast) ease, color var(--duration-fast) ease, box-shadow var(--duration-fast) ease;
}
.btn-primary { background: var(--color-accent); color: #FFFFFF; font-weight: 600; }
.btn-primary:hover { background: var(--color-accent-hover); box-shadow: 0 0 24px var(--color-accent-glow-strong); }
.btn-ghost { border-color: var(--color-border-strong); color: var(--color-text); background: transparent; }
.btn-ghost:hover { border-color: var(--color-accent); color: var(--color-accent-text); }
.btn-sm { padding: 11px 18px; font-size: 11.5px; }
.btn-block { width: 100%; }
.btn-row { display: flex; gap: 14px; flex-wrap: wrap; }
button.btn { font-family: var(--font-mono); }
.btn:disabled { opacity: 0.55; cursor: not-allowed; }

/* --- Cards -------------------------------------------------------------- */

.card {
  --rx: 0deg;
  --ry: 0deg;
  --mx: 50%;
  --my: 50%;
  position: relative;
  overflow: hidden;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  transform: perspective(900px) rotateX(var(--rx)) rotateY(var(--ry));
  transition: border-color var(--duration-base) ease, box-shadow var(--duration-base) ease,
    transform 0.35s var(--ease-out);
}
.card:hover {
  border-color: var(--color-border-strong);
  box-shadow: 0 0 0 1px var(--color-accent-glow) inset, 0 16px 36px -22px rgba(94, 106, 210, 0.28);
}
.card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(220px circle at var(--mx) var(--my), rgba(94, 106, 210, 0.10), transparent 60%);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}
.card:hover::after { opacity: 1; }
/* card content sits above the sheen layer */
.card > * { position: relative; z-index: 1; }

@media (prefers-reduced-motion: reduce), (hover: none) {
  .card { transform: none !important; }
  .card::after { display: none; }
}
.card h4 { font-size: 1.05rem; margin-bottom: var(--space-3); }
.card p { color: var(--color-text-secondary); font-size: 0.92rem; line-height: 1.65; }
.tag-num {
  font-family: var(--font-mono);
  color: var(--color-accent-text);
  font-size: 12px;
  display: block;
  margin-bottom: var(--space-4);
  letter-spacing: 0.04em;
}

/* --- Badge / Tags ------------------------------------------------------ */

.badge {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent-text);
  border: 1px solid var(--color-accent-dim);
  border-radius: var(--radius-pill);
  padding: 5px 12px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-accent-glow);
}

.tags { display: flex; flex-wrap: wrap; gap: 10px; }
.tag {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-pill);
  padding: 6px 14px;
}
.tag.on { color: var(--color-accent-text); border-color: var(--color-accent-dim); }

/* --- Hero ----------------------------------------------------------------- */

.hero {
  --spot-x: 70%;
  --spot-y: 10%;
  padding: var(--space-24) 0 var(--space-20);
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(480px circle at var(--spot-x) var(--spot-y), rgba(94, 106, 210, 0.10), transparent 70%);
  opacity: 0;
  transition: opacity 0.5s ease;
  pointer-events: none;
}
.hero.spotlight-active::before { opacity: 1; }
@media (prefers-reduced-motion: reduce), (hover: none) {
  .hero::before { display: none; }
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: var(--space-16);
  align-items: center;
}
.hero-content h1 { margin: var(--space-6) 0 var(--space-6); }
.hero-sub { color: var(--color-text-secondary); font-size: var(--fs-body-lg); line-height: var(--lh-body); max-width: 540px; margin-bottom: var(--space-8); }
.hero-visual {
  aspect-ratio: 4 / 4.4;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: radial-gradient(ellipse 80% 60% at 70% 0%, rgba(94, 106, 210, 0.07), transparent 60%), var(--color-bg-secondary);
  position: relative;
}
#topology-canvas { width: 100%; height: 100%; display: block; }

/* --- Page hero (subpages) ------------------------------------------------- */

.page-hero { padding: var(--space-24) 0 var(--space-16); border-top: none; }
.page-hero h1 { margin: var(--space-5) 0; }
.page-hero .section-lead { margin-bottom: 0; }

/* --- Method timeline -------------------------------------------------------- */

.method {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1px;
  background: var(--color-border);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.method-step { background: var(--color-card); padding: var(--space-6) var(--space-5); }
.method-step .mn { font-family: var(--font-mono); color: var(--color-accent-text); font-size: 12px; margin-bottom: var(--space-4); display: block; }
.method-step h5 { font-family: var(--font-display); font-weight: 800; font-size: 1.02rem; margin-bottom: var(--space-2); letter-spacing: 0.01em; }
.method-step p { font-size: 0.82rem; color: var(--color-text-secondary); line-height: 1.55; }

/* --- People / Process / Technology -------------------------------------- */

.ppt-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-5); }
.ppt-card { text-align: center; padding: var(--space-10) var(--space-6); }
.ppt-card .ppt-icon {
  width: 48px; height: 48px; margin: 0 auto var(--space-5);
  border: 1px solid var(--color-accent-dim);
  border-radius: var(--radius-pill);
  display: flex; align-items: center; justify-content: center;
  color: var(--color-accent);
}

/* --- Case study cards --------------------------------------------------- */

.case-card { display: flex; flex-direction: column; gap: var(--space-4); }
.case-card .case-meta { display: flex; align-items: center; justify-content: space-between; gap: var(--space-4); flex-wrap: wrap; }

/* Editorial layout: one featured case study (the award-winning one) leads,
   the rest follow in a denser row — instead of a uniform card grid. */
.case-grid { display: flex; flex-direction: column; gap: var(--space-5); }
.case-featured {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-10);
  align-items: center;
  padding: var(--space-12) var(--space-10);
}
.case-featured .case-num {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 6rem;
  line-height: 1;
  letter-spacing: -0.02em;
  color: transparent;
  -webkit-text-stroke: 1.5px var(--color-border-strong);
  transition: -webkit-text-stroke-color 0.3s ease;
}
.case-featured:hover .case-num { -webkit-text-stroke-color: var(--color-accent); }
.case-featured h3 { font-size: 1.9rem; margin-bottom: var(--space-3); }
.case-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-5); }

@media (max-width: 900px) {
  .case-featured { grid-template-columns: 1fr; text-align: left; }
  .case-featured .case-num { font-size: 3.5rem; }
  .case-row { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 600px) {
  .case-row { grid-template-columns: 1fr; }
}

/* --- CTA banner ----------------------------------------------------------- */

.cta-banner {
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-lg);
  padding: var(--space-10) var(--space-10);
  background: radial-gradient(ellipse 70% 100% at 100% 0%, var(--color-accent-glow), transparent 60%), var(--color-card);
  display: flex; align-items: center; justify-content: space-between; gap: var(--space-8); flex-wrap: wrap;
}
.cta-banner h3 { font-size: 1.4rem; margin-bottom: var(--space-2); }
.cta-banner p { color: var(--color-text-secondary); }

/* --- Divider --------------------------------------------------------------- */

.divider { border: none; border-top: 1px solid var(--color-border); margin: var(--space-16) 0; }

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

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-5); }
.form-group { display: flex; flex-direction: column; gap: 8px; }
.form-group.full { grid-column: 1 / -1; }
.form-group label { font-size: 13px; color: var(--color-text-secondary); font-weight: 500; }
.form-group .req { color: var(--color-accent-text); }

.form-control {
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--color-text);
  background: var(--color-card);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  padding: 13px 16px;
  transition: border-color var(--duration-fast) ease, box-shadow var(--duration-fast) ease;
  width: 100%;
}
.form-control::placeholder { color: var(--color-text-tertiary); }
.form-control:focus { border-color: var(--color-accent); box-shadow: var(--ring-focus); outline: none; }
textarea.form-control { resize: vertical; min-height: 130px; }
select.form-control { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%238D98A5'%3E%3Cpath d='M5.5 7.5l4.5 4.5 4.5-4.5' stroke='%238D98A5' stroke-width='1.4' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; padding-right: 40px; }

.checkbox-row { display: flex; align-items: flex-start; gap: 10px; }
.checkbox-row input[type="checkbox"] {
  margin-top: 3px;
  width: 16px; height: 16px;
  accent-color: var(--color-accent);
  flex-shrink: 0;
}
.checkbox-row label { font-size: 13px; color: var(--color-text-secondary); line-height: 1.5; }
.checkbox-row a { color: var(--color-accent-text); text-decoration: underline; text-underline-offset: 2px; }

/* Honeypot: hidden from sighted users and screen readers, still focusable by bots. */
.hp-field {
  position: absolute !important;
  left: -9999px !important;
  width: 1px; height: 1px;
  overflow: hidden;
}

.form-notice {
  border-radius: var(--radius-sm);
  padding: 14px 18px;
  font-size: 14px;
  border: 1px solid var(--color-border-strong);
  margin-bottom: var(--space-5);
}
.form-notice.success { border-color: var(--color-success); color: var(--color-success); }
.form-notice.error { border-color: var(--color-danger); color: var(--color-danger); }

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

.site-footer { border-top: 1px solid var(--color-border); padding: var(--space-20) 0 var(--space-8); }
.footer-brand { display: flex; align-items: center; gap: 10px; margin-bottom: var(--space-5); color: var(--color-accent); }
.footer-name { font-family: var(--font-mono); font-size: 13px; letter-spacing: 0.08em; color: var(--color-text); }
.footer-sub { font-size: 12px; color: var(--color-text-tertiary); }
.footer-tagline { color: var(--color-text-secondary); font-size: 0.95rem; margin-bottom: var(--space-12); max-width: 420px; }
.footer-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-8); padding-bottom: var(--space-12); border-bottom: 1px solid var(--color-border); }
.footer-col { display: flex; flex-direction: column; gap: 10px; }
.footer-col-title { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--color-text-tertiary); margin-bottom: 4px; }
.footer-col a, .footer-col span { font-size: 14px; color: var(--color-text-secondary); }
.footer-col a:hover { color: var(--color-accent-text); }
.footer-bottom { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; padding-top: var(--space-6); font-family: var(--font-mono); font-size: 11.5px; color: var(--color-text-tertiary); }
.footer-payoff { color: var(--color-text-secondary); }

/* --- Scroll reveal (progressive enhancement via animations.js) ------------ */

.reveal { opacity: 0; transform: translateY(14px); transition: opacity var(--duration-slow) var(--ease-out), transform var(--duration-slow) var(--ease-out); }
.reveal.in-view { opacity: 1; transform: none; }

.draw-line { stroke-dasharray: var(--len, 400); stroke-dashoffset: var(--len, 400); transition: stroke-dashoffset 1.1s var(--ease-out); }
.draw-line.in-view { stroke-dashoffset: 0; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .draw-line { stroke-dashoffset: 0; transition: none; }
}

/* --- Topology visualization (hero) ---------------------------------------- */

.topology-svg { width: 100%; height: 100%; display: block; }
.topo-group { transition: transform 0.4s var(--ease-out); }

.topo-line { stroke: var(--color-border-strong); stroke-width: 1; fill: none; }
.topo-line.accent { stroke: var(--color-accent); opacity: 0.5; }

.topo-node rect { fill: var(--color-card); stroke: var(--color-border-strong); stroke-width: 1; }
.topo-node.accent rect { stroke: var(--color-accent); }
.topo-node text {
  font-family: var(--font-mono);
  font-size: 11px;
  fill: var(--color-text-secondary);
  letter-spacing: 0.03em;
  text-anchor: middle;
  dominant-baseline: middle;
}
.topo-node.accent text { fill: var(--color-accent-text); }

.topo-pulse {
  fill: var(--color-accent);
  filter: drop-shadow(0 0 4px var(--color-accent-glow-strong));
  offset-rotate: 0deg;
  animation-name: topo-pulse-move;
  animation-timing-function: ease-in-out;
  animation-iteration-count: infinite;
  animation-play-state: paused;
}
.topology-svg.active .topo-pulse { animation-play-state: running; }

@keyframes topo-pulse-move {
  0% { offset-distance: 0%; opacity: 0; }
  8% { opacity: 1; }
  92% { opacity: 1; }
  100% { offset-distance: 100%; opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .topo-pulse { display: none; }
  .topo-group { transition: none; }
}