/* ==========================================================================
   LIGONEXUS — COMPONENTS
   ========================================================================== */

/* ---------------------------------------------------------------------- */
/* Noise + ambient backdrop                                                */
/* ---------------------------------------------------------------------- */

.noise {
  position: fixed;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  opacity: 0.035;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.cursor-glow {
  position: fixed;
  width: 480px;
  height: 480px;
  border-radius: 50%;
  pointer-events: none;
  z-index: 1;
  background: radial-gradient(circle, rgba(10, 77, 255, 0.16), rgba(108, 77, 255, 0.08) 45%, transparent 70%);
  transform: translate(-50%, -50%);
  transition: opacity var(--dur-med) var(--ease-out);
  opacity: 0;
  will-change: transform;
}

@media (max-width: 900px), (hover: none) {
  .cursor-glow { display: none; }
}

/* ---------------------------------------------------------------------- */
/* Header / Nav                                                            */
/* ---------------------------------------------------------------------- */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding-block: var(--space-s);
  transition: padding var(--dur-med) var(--ease-out), background var(--dur-med) var(--ease-out), border-color var(--dur-med) var(--ease-out);
  border-bottom: 1px solid transparent;
}

.site-header.is-scrolled {
  padding-block: var(--space-2xs);
  background: rgba(7, 17, 31, 0.78);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  border-bottom: 1px solid var(--ink-border);
}

.nav-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-m);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.brand-mark {
  width: 30px;
  height: 30px;
  flex: none;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-m);
}

.nav-links a {
  position: relative;
  font-size: 0.92rem;
  color: var(--mist-text);
  padding-block: 6px;
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 1px;
  background: var(--cyan);
  transition: width var(--dur-med) var(--ease-out);
}

.nav-links a:hover::after,
.nav-links a[aria-current="page"]::after { width: 100%; }

.nav-links a[aria-current="page"] { color: #fff; }

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

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}
.nav-toggle span { width: 22px; height: 1.5px; background: #fff; transition: transform var(--dur-fast), opacity var(--dur-fast); }

@media (max-width: 940px) {
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .nav-actions .btn { display: none; }
  .mobile-menu.is-open { display: flex; }
}

.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 99;
  background: var(--ink-950);
  flex-direction: column;
  padding: 6.5rem var(--container-pad) var(--space-l);
  gap: var(--space-m);
}

.mobile-menu a {
  font-family: var(--font-display);
  font-size: 1.9rem;
  color: #fff;
  padding-block: 0.4rem;
  border-bottom: 1px solid var(--ink-border);
}

.mobile-menu .btn { align-self: flex-start; margin-top: var(--space-s); }

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

.btn {
  --btn-x: 50%;
  --btn-y: 50%;
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.94rem;
  padding: 0.85rem 1.6rem;
  border-radius: var(--radius-full);
  transition: transform var(--dur-fast) var(--ease-out), box-shadow var(--dur-med) var(--ease-out), background var(--dur-fast);
  isolation: isolate;
  white-space: nowrap;
}

.btn-primary {
  background: var(--royal);
  color: #fff;
  box-shadow: var(--shadow-glow-royal);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 0 0 1px rgba(10,77,255,.5), 0 26px 70px rgba(10,77,255,.34); }

.btn-ghost {
  background: transparent;
  color: #fff;
  border: 1px solid var(--ink-border-strong);
}
.btn-ghost:hover { border-color: rgba(255,255,255,.4); transform: translateY(-2px); }

.on-light .btn-ghost { color: var(--ink-text); border-color: rgba(10,15,31,.16); }

.btn-arrow { transition: transform var(--dur-fast) var(--ease-out); }
.btn:hover .btn-arrow { transform: translateX(3px); }

.btn-sm { padding: 0.62rem 1.2rem; font-size: 0.85rem; }

/* magnetic wrapper reads --btn-x/--btn-y set by JS */
.btn.is-magnetic { will-change: transform; }

/* ---------------------------------------------------------------------- */
/* Signal Map — the recurring schematic signature                          */
/* ---------------------------------------------------------------------- */

.signal-map { display: block; overflow: visible; }
.signal-map .sm-path {
  fill: none;
  stroke: var(--ink-border-strong);
  stroke-width: 1;
}
.signal-map .sm-node-ring { fill: none; stroke: var(--ink-border-strong); stroke-width: 1; }
.signal-map .sm-node-core { fill: var(--ink-900); stroke: rgba(255,255,255,.3); stroke-width: 1; }
.signal-map .sm-label {
  font-family: var(--font-mono);
  font-size: 9.5px;
  fill: var(--mist-text-soft);
  letter-spacing: 0.06em;
}
.signal-map .sm-pulse {
  fill: var(--cyan);
  filter: drop-shadow(0 0 6px var(--cyan));
}

.divider-schematic {
  width: 100%;
  height: 64px;
  overflow: visible;
}
.divider-schematic path {
  fill: none;
  stroke: var(--ink-border);
  stroke-width: 1;
}
.divider-schematic circle {
  fill: var(--ink-950);
  stroke: var(--ink-border-strong);
}
.on-light .divider-schematic path { stroke: rgba(10,15,31,.1); }
.on-light .divider-schematic circle { fill: var(--paper); stroke: rgba(10,15,31,.16); }

/* ---------------------------------------------------------------------- */
/* Reveal-on-scroll                                                         */
/* ---------------------------------------------------------------------- */

[data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 900ms var(--ease-out), transform 900ms var(--ease-out);
}
[data-reveal].is-visible { opacity: 1; transform: translateY(0); }
[data-reveal-delay="1"] { transition-delay: 90ms; }
[data-reveal-delay="2"] { transition-delay: 180ms; }
[data-reveal-delay="3"] { transition-delay: 270ms; }
[data-reveal-delay="4"] { transition-delay: 360ms; }

/* ---------------------------------------------------------------------- */
/* Badges / tags                                                            */
/* ---------------------------------------------------------------------- */

.tag {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  padding: 0.3rem 0.65rem;
  border-radius: var(--radius-s);
  border: 1px solid var(--ink-border-strong);
  color: var(--mist-text);
}

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

.site-footer {
  position: relative;
  background: #050b16;
  border-top: 1px solid var(--ink-border);
  padding-block: var(--space-xl) var(--space-l);
  overflow: hidden;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: var(--space-l);
}

@media (max-width: 900px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .footer-grid { grid-template-columns: 1fr; }
}

.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--mist-text-soft);
  font-weight: 500;
  margin-bottom: var(--space-s);
}

.footer-col ul { display: flex; flex-direction: column; gap: 0.65rem; }
.footer-col a { font-size: 0.92rem; color: var(--mist-text); transition: color var(--dur-fast); }
.footer-col a:hover { color: var(--cyan); }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-s);
  margin-top: var(--space-xl);
  padding-top: var(--space-m);
  border-top: 1px solid var(--ink-border);
  font-size: 0.82rem;
  color: var(--mist-text-soft);
}

.footer-social { display: flex; gap: var(--space-s); }
.footer-social a {
  width: 38px; height: 38px;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--ink-border-strong);
  border-radius: 50%;
  transition: border-color var(--dur-fast), transform var(--dur-fast);
}
.footer-social a:hover { border-color: var(--cyan); transform: translateY(-2px); }

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

.field { display: flex; flex-direction: column; gap: 0.5rem; }
.field label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--mist-text-soft);
}
.field input, .field select, .field textarea {
  background: var(--ink-900);
  border: 1px solid var(--ink-border-strong);
  border-radius: var(--radius-s);
  padding: 0.85rem 1rem;
  color: #fff;
  font-size: 0.96rem;
  transition: border-color var(--dur-fast), box-shadow var(--dur-fast);
}
.field input:focus, .field select:focus, .field textarea:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(0,217,255,.14);
  outline: none;
}
.field textarea { resize: vertical; min-height: 120px; }

.form-note {
  font-size: 0.82rem;
  color: var(--mist-text-soft);
  display: flex;
  gap: 8px;
  align-items: flex-start;
}

/* ---------------------------------------------------------------------- */
/* Accordion (FAQ)                                                          */
/* ---------------------------------------------------------------------- */

.accordion-item {
  border-bottom: 1px solid var(--ink-border);
}
.accordion-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-m);
  padding-block: 1.5rem;
  text-align: left;
  font-family: var(--font-display);
  font-size: 1.08rem;
  color: #fff;
}
.accordion-icon { position: relative; width: 18px; height: 18px; flex: none; }
.accordion-icon::before, .accordion-icon::after {
  content: "";
  position: absolute;
  background: var(--mist-text);
  transition: transform var(--dur-med) var(--ease-out), opacity var(--dur-med);
}
.accordion-icon::before { top: 50%; left: 0; width: 100%; height: 1px; transform: translateY(-50%); }
.accordion-icon::after { left: 50%; top: 0; width: 1px; height: 100%; transform: translateX(-50%); }
.accordion-item.is-open .accordion-icon::after { transform: translateX(-50%) rotate(90deg); opacity: 0; }

.accordion-panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--dur-med) var(--ease-out);
}
.accordion-item.is-open .accordion-panel { grid-template-rows: 1fr; }
.accordion-panel-inner { overflow: hidden; }
.accordion-panel p { padding-bottom: 1.5rem; max-width: 62ch; color: var(--mist-text-soft); }

/* ---------------------------------------------------------------------- */
/* Marquee (tech stack strip)                                              */
/* ---------------------------------------------------------------------- */

.marquee {
  overflow: hidden;
  border-top: 1px solid var(--ink-border);
  border-bottom: 1px solid var(--ink-border);
}
.marquee-track {
  display: flex;
  width: max-content;
  gap: var(--space-xl);
  padding-block: var(--space-m);
  animation: marquee 34s linear infinite;
}
.marquee:hover .marquee-track { animation-play-state: paused; }
@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}
.marquee-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--mist-text-soft);
  white-space: nowrap;
}
.marquee-item svg { width: 20px; height: 20px; opacity: .8; }