/* ============================================================
   Leiterhof Elektrotechnik — Dark-Tech, warm & präzise
   ============================================================ */

:root {
  --bg: #0A0A0C;
  --panel: #131316;
  --panel-2: #1A1A1F;
  --hairline: rgba(245, 244, 240, 0.10);
  --hairline-soft: rgba(245, 244, 240, 0.06);
  --text: #F0EEE8;
  --text-dim: rgba(240, 238, 232, 0.58);
  --text-faint: rgba(240, 238, 232, 0.34);
  --amp: #F5C518;
  --cyan: #38E1FF;
  --trace: rgba(245, 244, 240, 0.07);
  --ease: cubic-bezier(0.32, 0.72, 0, 1);
  --font-head: "Manrope", sans-serif;
  --font-mono: "Chivo Mono", monospace;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-head);
  font-weight: 400;
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body.has-probe { cursor: none; }
body.has-probe a,
body.has-probe button,
body.has-probe input,
body.has-probe textarea,
body.has-probe label { cursor: none; }

::selection { background: var(--amp); color: var(--bg); }

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

/* ---------- Leiterbahn-Ebene ---------- */

.circuit-layer {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.circuit-layer svg,
.circuit-layer canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

#circuit-base { opacity: 1; }

#circuit-glow {
  opacity: 0;
  transition: opacity 0.4s var(--ease);
  /* Radiale Maske folgt dem Cursor (JS setzt --mx/--my) */
  -webkit-mask-image: radial-gradient(circle 340px at var(--mx, 50%) var(--my, 50%),
      rgba(0,0,0,1) 0%, rgba(0,0,0,0.55) 45%, transparent 78%);
  mask-image: radial-gradient(circle 340px at var(--mx, 50%) var(--my, 50%),
      rgba(0,0,0,1) 0%, rgba(0,0,0,0.55) 45%, transparent 78%);
}

body.probe-active #circuit-glow { opacity: 1; }

/* ---------- Prüfspitzen-Cursor ---------- */

.probe {
  position: fixed;
  left: 0; top: 0;
  z-index: 1000;
  pointer-events: none;
  will-change: transform;
}

.probe-tip {
  position: absolute;
  left: -3px; top: -3px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--amp);
  box-shadow: 0 0 8px rgba(245, 197, 24, 0.9), 0 0 22px rgba(245, 197, 24, 0.35);
}

.probe-ring {
  position: absolute;
  left: -17px; top: -17px;
  width: 34px; height: 34px;
  border: 1px solid rgba(245, 197, 24, 0.35);
  border-radius: 50%;
  transition: transform 0.25s var(--ease), border-color 0.25s var(--ease);
}

.probe.is-contact .probe-ring {
  transform: scale(1.5);
  border-color: rgba(56, 225, 255, 0.7);
}

/* ---------- Kopf ---------- */

.site-head {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem clamp(1.25rem, 4vw, 3.5rem);
  border-bottom: 1px solid var(--hairline-soft);
  background: rgba(10, 10, 12, 0.72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--text);
  font-weight: 800;
  font-size: 1rem;
  letter-spacing: 0.01em;
}

.brand em {
  font-style: normal;
  font-weight: 300;
  color: var(--text-dim);
  margin-left: 0.35rem;
}

.site-nav {
  display: flex;
  gap: clamp(1rem, 3vw, 2.4rem);
  align-items: center;
}

.site-nav a {
  color: var(--text-dim);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: color 0.3s var(--ease);
}

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

.site-nav .nav-cta {
  color: var(--amp);
  border: 1px solid rgba(245, 197, 24, 0.35);
  padding: 0.45rem 1.1rem;
  transition: border-color 0.3s var(--ease), color 0.3s var(--ease);
}

.site-nav .nav-cta:hover { border-color: var(--amp); color: var(--amp); }

/* ---------- Struktur ---------- */

main { position: relative; z-index: 1; }

.section {
  position: relative;
  padding: clamp(120px, 16vh, 200px) clamp(1.25rem, 5vw, 4.5rem);
  max-width: 1320px;
  margin: 0 auto;
}

.sec-head {
  display: flex;
  align-items: baseline;
  gap: 1.4rem;
  margin-bottom: clamp(3.5rem, 7vw, 5.5rem);
  border-bottom: 1px solid var(--hairline);
  padding-bottom: 1.6rem;
}

.sec-num {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--amp);
  letter-spacing: 0.15em;
}

.sec-title {
  position: relative;
  font-size: clamp(2.4rem, 6vw, 4.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  gap: 1.2rem;
}

/* Aus-Zustand: 20 % — schaltet per JS auf .is-on */
.sec-title.powered { opacity: 0.2; }

.sec-title.powered.is-on {
  animation: power-flicker 0.5s steps(1, end) forwards;
}

@keyframes power-flicker {
  0%   { opacity: 0.2; }
  18%  { opacity: 1; }
  26%  { opacity: 0.35; }  /* Dip 1 */
  38%  { opacity: 1; }
  52%  { opacity: 0.5; }   /* Dip 2 */
  64%  { opacity: 1; }
  100% { opacity: 1; }
}

/* Kontaktpunkt-Pad */
.contact-pad {
  display: inline-block;
  width: 16px; height: 16px;
  border: 1px solid rgba(245, 197, 24, 0.5);
  border-radius: 50%;
  position: relative;
  flex: none;
}

.contact-pad::after {
  content: "";
  position: absolute;
  inset: 4px;
  border-radius: 50%;
  background: var(--amp);
  opacity: 0.35;
  transition: opacity 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.sec-title.is-on .contact-pad::after {
  opacity: 1;
  box-shadow: 0 0 10px rgba(245, 197, 24, 0.8);
}

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

.hero {
  position: relative;
  z-index: 1;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(6rem, 12vh, 9rem) clamp(1.25rem, 5vw, 4.5rem) clamp(4rem, 8vh, 6rem);
  max-width: 1320px;
  margin: 0 auto;
}

.meas {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.18em;
  color: var(--text-faint);
  text-transform: uppercase;
  margin-bottom: 2rem;
}

.meas-num { color: var(--amp); }

.hero-title {
  font-size: clamp(3.2rem, 10.5vw, 9.5rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 0.98;
  margin-bottom: clamp(2.5rem, 5vh, 4rem);
}

.hero-title .line { display: block; }

.cursor-hint { color: var(--amp); }

.hero-foot {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 3rem;
  border-top: 1px solid var(--hairline);
  padding-top: 2rem;
}

.hero-sub {
  max-width: 34rem;
  color: var(--text-dim);
  font-size: 1.1rem;
}

.hero-instr {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--cyan);
  opacity: 0.75;
  max-width: 15rem;
  text-align: right;
  flex: none;
}

.scroll-cue {
  position: absolute;
  bottom: 2.2rem;
  left: 50%;
  width: 1px;
  height: 52px;
  background: var(--hairline);
  overflow: hidden;
}

.scroll-cue span {
  position: absolute;
  left: 0; top: -40%;
  width: 100%; height: 40%;
  background: var(--amp);
  animation: cue-drop 2.2s var(--ease) infinite;
}

@keyframes cue-drop {
  0% { top: -40%; }
  100% { top: 110%; }
}

/* ---------- Leistungen ---------- */

.svc-list {
  list-style: none;
  counter-reset: none;
}

.svc {
  display: grid;
  grid-template-columns: 7rem 1fr 2fr auto;
  gap: clamp(1rem, 3vw, 3rem);
  align-items: baseline;
  padding: 2.4rem 0;
  border-bottom: 1px solid var(--hairline-soft);
  transition: background 0.4s var(--ease);
}

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

.svc:hover { background: rgba(245, 197, 24, 0.025); }

.svc-id {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-faint);
  letter-spacing: 0.12em;
}

.svc h3 {
  font-size: clamp(1.25rem, 2.2vw, 1.6rem);
  font-weight: 600;
  letter-spacing: -0.015em;
}

.svc p {
  color: var(--text-dim);
  font-size: 0.98rem;
  max-width: 36rem;
}

.svc-spec {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--cyan);
  opacity: 0.7;
  white-space: nowrap;
  text-transform: uppercase;
}

/* ---------- Projekte ---------- */

.proj {
  display: grid;
  grid-template-columns: 3fr 2fr;
  gap: clamp(2rem, 5vw, 5rem);
  align-items: end;
  margin-bottom: clamp(5rem, 10vh, 8rem);
}

.proj:last-child { margin-bottom: 0; }

.proj--flip { grid-template-columns: 2fr 3fr; }
.proj--flip .proj-media { order: 2; }
.proj--flip .proj-info { order: 1; text-align: right; }
.proj--flip .proj-data { justify-content: flex-end; }

.proj-media {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--hairline);
}

.proj-media img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  filter: saturate(0.92);
  transition: transform 1.2s var(--ease);
}

.proj:hover .proj-media img { transform: scale(1.03); }

.proj-id {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--amp);
  letter-spacing: 0.15em;
  display: block;
  margin-bottom: 1rem;
}

.proj-info h3 {
  font-size: clamp(1.5rem, 2.8vw, 2.1rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 1.1rem;
}

.proj-info > p {
  color: var(--text-dim);
  font-size: 0.98rem;
  margin-bottom: 1.8rem;
}

.proj-data {
  display: flex;
  gap: 2.4rem;
  border-top: 1px solid var(--hairline);
  padding-top: 1.2rem;
}

.proj-data dt {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 0.3rem;
}

.proj-data dd {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  color: var(--text);
}

/* ---------- Betrieb ---------- */

.about {
  display: grid;
  grid-template-columns: 3fr 2fr;
  gap: clamp(2.5rem, 6vw, 6rem);
  align-items: start;
}

.about-lead {
  font-size: clamp(1.3rem, 2.4vw, 1.75rem);
  font-weight: 300;
  line-height: 1.45;
  letter-spacing: -0.01em;
  margin-bottom: 1.8rem;
}

.about-text > p:not(.about-lead) {
  color: var(--text-dim);
  margin-bottom: 1.3rem;
  max-width: 38rem;
}

.facts {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-top: 1px solid var(--hairline);
  border-left: 1px solid var(--hairline);
}

.fact {
  border-bottom: 1px solid var(--hairline);
  border-right: 1px solid var(--hairline);
  padding: 1.6rem 1.4rem 1.4rem;
}

.fact dt {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 0.6rem;
}

.fact dd {
  font-family: var(--font-mono);
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  font-weight: 500;
  color: var(--text);
}

.fact .meas-num { color: var(--amp); }

/* ---------- Kontakt ---------- */

.contact {
  display: grid;
  grid-template-columns: 2fr 3fr;
  gap: clamp(2.5rem, 6vw, 6rem);
  align-items: start;
}

.contact-lead {
  font-size: clamp(1.15rem, 2vw, 1.45rem);
  font-weight: 300;
  line-height: 1.5;
  margin-bottom: 2.4rem;
}

address { font-style: normal; }

address p {
  color: var(--text-dim);
  font-size: 0.95rem;
  margin-bottom: 1.4rem;
}

.addr-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 0.35rem;
}

.contact-form .field { margin-bottom: 1.6rem; }

.contact-form label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 0.5rem;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--hairline);
  color: var(--text);
  font-family: var(--font-head);
  font-size: 1.05rem;
  padding: 0.6rem 0;
  transition: border-color 0.35s var(--ease);
  resize: vertical;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-bottom-color: var(--amp);
}

.btn-submit {
  margin-top: 0.6rem;
  background: var(--amp);
  color: var(--bg);
  border: none;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 1rem 2.6rem;
  cursor: pointer;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.btn-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 28px rgba(245, 197, 24, 0.28);
}

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

.site-foot {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--hairline);
  padding: 3.5rem clamp(1.25rem, 5vw, 4.5rem) 2.5rem;
  max-width: 1320px;
  margin: 0 auto;
}

.foot-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1.4fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
}

.foot-brand {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-weight: 600;
  font-size: 0.95rem;
}

.foot-nav {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.foot-nav a {
  color: var(--text-dim);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: color 0.3s var(--ease);
}

.foot-nav a:hover { color: var(--amp); }

.foot-legal p {
  color: var(--text-faint);
  font-size: 0.8rem;
  line-height: 1.7;
}

.foot-note {
  border-top: 1px solid var(--hairline-soft);
  padding-top: 1.6rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--text-faint);
}

.foot-note a { color: var(--text-dim); }
.foot-note a:hover { color: var(--amp); }

/* ---------- Scroll-Reveals ---------- */

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- Reduced Motion ---------- */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .sec-title.powered { opacity: 1; animation: none !important; }
  .sec-title.powered.is-on { animation: none !important; opacity: 1; }
  .contact-pad::after { opacity: 1; }
  .scroll-cue span { animation: none; }
  #circuit-glow { display: none; }
  #fx-canvas { display: none; }
  .probe { display: none !important; }
  body.has-probe, body.has-probe a, body.has-probe button,
  body.has-probe input, body.has-probe textarea, body.has-probe label { cursor: auto; }
}

/* ---------- Responsive ---------- */

@media (max-width: 1023px) {
  .svc { grid-template-columns: 5rem 1fr; }
  .svc p { grid-column: 2; }
  .svc-spec { grid-column: 2; }
}

@media (max-width: 767px) {
  .site-nav a:not(.nav-cta) { display: none; }

  .hero-foot { flex-direction: column; align-items: flex-start; gap: 1.5rem; }
  .hero-instr { text-align: left; max-width: none; }

  .svc { grid-template-columns: 1fr; gap: 0.7rem; padding: 2rem 0; }
  .svc p, .svc-spec { grid-column: 1; }

  .proj, .proj--flip { grid-template-columns: 1fr; gap: 1.6rem; }
  .proj--flip .proj-media { order: 0; }
  .proj--flip .proj-info { order: 1; text-align: left; }
  .proj--flip .proj-data { justify-content: flex-start; }

  .about { grid-template-columns: 1fr; }
  .contact { grid-template-columns: 1fr; }

  .foot-grid { grid-template-columns: 1fr; gap: 2rem; }

  [data-touch-hide] { display: none; }
}