/* ============================================================
   ABESS GmbH – Hauptstylesheet
   Design: Dark Infrastructure (Entwurf A)
   ============================================================ */

:root {
  --green:      #4a9d3f;
  --green-bright: #5bbe4e;
  --green-dim:  #2d6126;
  --black:      #0a0f0b;
  --dark:       #0f1610;
  --panel:      #141d15;
  --border:     #1e2e1f;
  --text:       #c8d9c8;
  --text-dim:   #6a876a;
  --white:      #e8f0e8;
}

/* ── RESET ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  background: var(--black);
  color: var(--text);
  font-family: 'IBM Plex Sans', sans-serif;
  font-weight: 300;
  overflow-x: hidden;
}

/* ── GRID-OVERLAY ── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(74,157,63,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(74,157,63,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}

/* ============================================================
   NAVIGATION
   ============================================================ */
.main-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 48px;
  height: 72px;
  background: rgba(10,15,11,0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-logo img { height: 42px; display: block; }

.nav-links {
  display: flex;
  gap: 36px;
  list-style: none;
}

.nav-links a {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-dim);
  text-decoration: none;
  transition: color 0.2s;
}

.nav-links a:hover,
.nav-links a.active { color: var(--green); }

.nav-right {
  display: flex;
  align-items: center;
  gap: 20px;
}

.nav-lang {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--text-dim);
  text-decoration: none;
  border: 1px solid var(--border);
  padding: 5px 10px;
  transition: all 0.2s;
}

.nav-lang:hover { color: var(--green); border-color: var(--green); }

.nav-cta {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--green);
  border: 1px solid var(--green);
  padding: 8px 20px;
  text-decoration: none;
  transition: all 0.2s;
}

.nav-cta:hover { background: var(--green); color: var(--black); }

/* ============================================================
   FOOTER
   ============================================================ */
.main-footer {
  background: var(--panel);
  border-top: 1px solid var(--border);
  padding: 40px 48px;
  position: relative;
  z-index: 1;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
}

.footer-logo img { height: 32px; display: block; }

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  text-decoration: none;
  transition: color 0.2s;
}

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

.footer-copy {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  color: var(--text-dim);
  letter-spacing: 0.06em;
}

/* ============================================================
   GEMEINSAME SEKTIONS-ELEMENTE
   ============================================================ */
.section-label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.section-label::before {
  content: '';
  display: block;
  width: 24px;
  height: 1px;
  background: var(--green);
}

h1, h2 {
  font-family: 'Bebas Neue', sans-serif;
  color: var(--white);
  line-height: 1;
}

h1 { font-size: clamp(72px, 9vw, 128px); }
h2 { font-size: clamp(42px, 5vw, 72px); margin-bottom: 24px; }
h2 span { color: var(--green); }

section {
  position: relative;
  z-index: 1;
  padding: 100px 48px;
}

/* ── BUTTONS ── */
.btn-primary {
  background: var(--green);
  color: var(--black);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 500;
  padding: 16px 32px;
  border: none;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  transition: all 0.2s;
}

.btn-primary:hover { background: var(--green-bright); }

.btn-ghost {
  color: var(--text);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: color 0.2s;
}

.btn-ghost:hover { color: var(--green); }

/* ── METRICS BAR ── */
.metrics-bar {
  position: relative;
  z-index: 2;
  background: var(--panel);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.metric {
  padding: 40px 48px;
  border-right: 1px solid var(--border);
}

.metric:last-child { border-right: none; }

.metric-value {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 56px;
  color: var(--green);
  line-height: 1;
  margin-bottom: 8px;
}

.metric-unit {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 16px;
  color: var(--text-dim);
}

.metric-label {
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-top: 6px;
}

/* ── PROJECT CARDS ── */
.projects-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 2px;
  margin-top: 60px;
  background: var(--border);
}

.project-card {
  background: var(--panel);
  padding: 48px;
  position: relative;
  overflow: hidden;
}

/* Verlinkte Karte */
.project-card--linked {
  text-decoration: none;
  color: inherit;
  display: block;
  transition: background 0.3s;
}

.project-card--linked:hover { background: #1a2b1b; }

.project-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 3px; height: 100%;
  background: var(--green);
  opacity: 0;
  transition: opacity 0.3s;
}

.project-card:hover::before { opacity: 1; }

/* Blueprint-Vorschaubild in der Projektkarte */
.project-thumb {
  width: calc(100% + 96px);          /* bricht aus dem padding heraus */
  margin: -48px -48px 32px -48px;
  height: 200px;
  overflow: hidden;
  background: #0a0f0b;
  border-bottom: 1px solid var(--border);
}

.project-thumb-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 20%;
  filter: invert(1) brightness(0.5);
  mix-blend-mode: screen;
  transition: transform 0.5s ease, brightness 0.3s;
}

.project-card--linked:hover .project-thumb-img {
  transform: scale(1.04);
  filter: invert(1) brightness(0.65);
}

.project-link {
  margin-top: 20px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--green);
  transition: gap 0.2s;
}

.project-status {
  display: inline-block;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 4px 10px;
  background: rgba(74,157,63,0.12);
  color: var(--green);
  border: 1px solid var(--green-dim);
  margin-bottom: 24px;
}

.project-name {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 36px;
  color: var(--white);
  margin-bottom: 12px;
}

.project-specs {
  display: flex;
  gap: 24px;
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.spec {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 13px;
  color: var(--text-dim);
}

.spec strong {
  display: block;
  font-size: 20px;
  color: var(--green);
  font-family: 'Bebas Neue', sans-serif;
  letter-spacing: 0.05em;
}

/* ── TECH CARDS ── */
.tech-section {
  background: var(--panel);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.tech-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  margin-top: 60px;
  background: var(--border);
}

.tech-card {
  background: var(--dark);
  padding: 40px;
  transition: background 0.3s;
}

.tech-card:hover { background: var(--panel); }

.tech-icon {
  width: 48px; height: 48px;
  border: 1px solid var(--green-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  font-size: 22px;
}

.tech-card h3 {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 26px;
  color: var(--white);
  margin-bottom: 12px;
}

.tech-card p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-dim);
}

/* ── CONTACT FORM ── */
.contact-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 40px;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-field label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.form-field input,
.form-field textarea,
.form-field select {
  background: var(--panel);
  border: 1px solid var(--border);
  color: var(--text);
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 14px;
  padding: 12px 16px;
  outline: none;
  transition: border-color 0.2s;
  resize: none;
}

.form-field input:focus,
.form-field textarea:focus { border-color: var(--green); }

/* ============================================================
   RESPONSIVE DESIGN
   Breakpoints:
     ≤1024px  Tablet / kleines Laptop
     ≤768px   Tablet / großes Handy
     ≤480px   Handy
   ============================================================ */

/* ── TABLET / KLEINES LAPTOP ── */
@media (max-width: 1024px) {

  /* Navigation: kompakter */
  .main-nav { padding: 0 24px; height: 64px; }
  .nav-logo img { height: 36px; }
  .nav-links { gap: 22px; }
  .nav-links a { font-size: 11px; }

  /* Sections: weniger Padding */
  section { padding: 80px 32px; }

  /* Metrics: 2x2 statt 1x4 */
  .metrics-bar { grid-template-columns: repeat(2, 1fr); }
  .metric { padding: 32px 28px; border-right: 1px solid var(--border); border-bottom: 1px solid var(--border); }
  .metric:nth-child(2) { border-right: none; }
  .metric:nth-child(3),
  .metric:nth-child(4) { border-bottom: none; }
  .metric:nth-child(4) { border-right: none; }
  .metric-value { font-size: 44px; }

  /* Projekte: 1+1 statt 1.5+1 */
  .projects-grid { grid-template-columns: 1fr 1fr; }

  /* Tech-Karten: 1+1+1 bleibt, aber kompakter */
  .tech-grid { gap: 1px; }
  .tech-card { padding: 32px 24px; }

  /* Contact: 1-spaltig */
  .contact-section { grid-template-columns: 1fr; gap: 48px; }
}

/* ── TABLET / GROSSES HANDY ── */
@media (max-width: 768px) {

  /* Navigation: Menü-Links ausblenden, nur Logo + Burger + CTA */
  .main-nav {
    padding: 0 16px;
    height: 60px;
  }
  .nav-logo img { height: 32px; }

  /* Klassischer Mobile-Nav-Trick: Links per JS einklappen */
  .nav-links {
    position: fixed;
    top: 60px; left: 0; right: 0;
    background: var(--black);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    gap: 0;
    padding: 8px 0;
    /* standardmäßig versteckt — Toggle per .nav-open */
    display: none;
  }

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

  .nav-links li { width: 100%; }
  .nav-links a {
    display: block;
    padding: 14px 24px;
    font-size: 13px;
    border-bottom: 1px solid var(--border);
  }
  .nav-links li:last-child a { border-bottom: none; }

  .nav-right { gap: 10px; }
  .nav-lang { padding: 4px 8px; font-size: 10px; }
  .nav-cta { padding: 6px 12px; font-size: 10px; }

  /* Burger-Button anzeigen */
  .nav-burger {
    display: flex !important;
    flex-direction: column;
    justify-content: center;
    gap: 4px;
    width: 32px; height: 32px;
    background: transparent;
    border: 1px solid var(--border);
    cursor: pointer;
    padding: 6px;
  }
  .nav-burger span {
    display: block;
    height: 1.5px;
    background: var(--text);
    transition: all 0.2s;
  }

  /* Sections */
  section { padding: 64px 20px; }

  /* Typografie */
  h1 { font-size: clamp(48px, 12vw, 80px); line-height: 0.95; }
  h2 { font-size: clamp(34px, 8vw, 52px); margin-bottom: 18px; }

  /* Metrics: 1-spaltig */
  .metrics-bar { grid-template-columns: 1fr; }
  .metric { padding: 24px 20px; border-right: none !important; border-bottom: 1px solid var(--border); }
  .metric:last-child { border-bottom: none; }
  .metric-value { font-size: 38px; }

  /* Projekte: 1-spaltig */
  .projects-grid { grid-template-columns: 1fr; }
  .project-card { padding: 32px 24px; }
  .project-thumb { width: calc(100% + 48px); margin: -32px -24px 24px -24px; height: 160px; }
  .project-name { font-size: 28px; }
  .project-specs { flex-wrap: wrap; gap: 16px; }

  /* Tech: 1-spaltig */
  .tech-grid { grid-template-columns: 1fr; }

  /* Footer: vertikal stapeln */
  .main-footer { padding: 32px 20px; }
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 20px;
    text-align: left;
  }
  .footer-copy { font-size: 10px; }
}

/* ── HANDY ── */
@media (max-width: 480px) {
  /* CTA in Nav nur als Icon o.ä. — hier einfach noch kleiner */
  .nav-cta { padding: 5px 10px; }

  /* Logo etwas kleiner */
  .nav-logo img { height: 28px; }

  /* Hero-Text noch kompakter */
  section { padding: 56px 16px; }
  h1 { font-size: clamp(40px, 11vw, 64px); }

  /* Buttons mobil zentriert untereinander */
  .btn-primary, .btn-ghost {
    width: 100%;
    text-align: center;
    box-sizing: border-box;
  }
}

/* Burger-Button per Default verstecken (nur mobil sichtbar) */
.nav-burger { display: none; }