/* ═══════════════════════════════════════════════════════════
   style.css — LU SYSTEMS IT-Freelancer
   Gemeinsames Stylesheet für alle Seiten
   ═══════════════════════════════════════════════════════════ */

/* ── Reset & Tokens ────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:        #0A0F1E;
  --surface:   #111827;
  --surface2:  #162033;
  --border:    #1E2A3B;
  --steel:     #E8EDF4;
  --muted:     #8B95A3;
  --cyan:      #00D4FF;
  --cyan-dim:  rgba(0, 212, 255, 0.12);
  --cyan-mid:  rgba(0, 212, 255, 0.35);
  --green:     #28C840;
  --white:     #FFFFFF;
  --radius:    4px;
  --radius-lg: 8px;

  --font-display: 'Space Grotesk', sans-serif;
  --font-body:    'Inter', sans-serif;
  --font-mono:    'JetBrains Mono', monospace;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--steel);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main { flex: 1; }

/* ── Typography ─────────────────────────────────────────────── */
h1 {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 6vw, 5rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--white);
  margin-bottom: 1.5rem;
}

h1 em { font-style: normal; color: var(--cyan); }

h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--white);
  line-height: 1.15;
  margin-bottom: 1rem;
}

h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 0.6rem;
  letter-spacing: -0.01em;
}

h4 {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.35rem;
}

p { color: var(--steel); }

a { color: var(--cyan); text-decoration: none; }
a:hover { opacity: 0.8; }

/* ── Navigation ─────────────────────────────────────────────── */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 4rem;
  background: rgba(10, 15, 30, 0.88);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  color: var(--white);
  letter-spacing: -0.02em;
  text-decoration: none;
}

.nav-logo span { color: var(--cyan); }

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

.nav-links a {
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--muted);
  text-decoration: none;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: color 0.2s;
}

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

.nav-links a.nav-cta {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--cyan);
  border: 1px solid var(--cyan);
  padding: 0.45rem 1rem;
  border-radius: var(--radius);
  text-transform: none;
  letter-spacing: 0;
  transition: background 0.2s, color 0.2s;
}

.nav-links a.nav-cta:hover {
  background: var(--cyan-dim);
  opacity: 1;
}

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

.nav-burger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--steel);
  border-radius: 2px;
  transition: all 0.25s;
}

/* ── Sections ───────────────────────────────────────────────── */
section { padding: 6rem 4rem; }

.section-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--cyan);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
  display: block;
}

.section-intro {
  font-size: 1rem;
  color: var(--muted);
  max-width: 52ch;
  line-height: 1.7;
}

.divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 0 4rem;
}

/* ── Buttons ────────────────────────────────────────────────── */
.btn-primary {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0.8rem 1.75rem;
  background: var(--cyan);
  color: var(--bg);
  border: 1px solid var(--cyan);
  border-radius: var(--radius);
  text-decoration: none;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.2s;
  letter-spacing: -0.01em;
}

.btn-primary:hover { opacity: 0.88; transform: translateY(-1px); }

.btn-ghost {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 0.9rem;
  padding: 0.8rem 1.75rem;
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-decoration: none;
  transition: border-color 0.2s, color 0.2s;
}

.btn-ghost:hover { border-color: var(--steel); color: var(--steel); opacity: 1; }

.btn-card {
  display: block;
  width: 100%;
  text-align: center;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.88rem;
  padding: 0.75rem;
  border-radius: var(--radius);
  text-decoration: none;
  transition: all 0.2s;
}

.btn-card-outline {
  border: 1px solid var(--border);
  color: var(--steel);
}

.btn-card-outline:hover { border-color: var(--cyan); color: var(--cyan); opacity: 1; }

.btn-card-filled {
  background: var(--cyan);
  color: var(--bg);
  border: 1px solid var(--cyan);
}

.btn-card-filled:hover { opacity: 0.88; }

/* ── Cards ──────────────────────────────────────────────────── */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  position: relative;
  overflow: hidden;
  transition: border-color 0.25s, transform 0.25s;
  text-decoration: none;
  display: block;
  color: inherit;
}

.card:hover {
  border-color: var(--cyan-mid);
  transform: translateY(-3px);
  opacity: 1;
}

.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}

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

.card-icon {
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
  display: block;
}

.card p {
  font-size: 0.88rem;
  color: var(--muted);
  line-height: 1.65;
}

.card-tag {
  display: inline-block;
  margin-top: 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--cyan);
  background: var(--cyan-dim);
  padding: 0.25rem 0.6rem;
  border-radius: 2px;
}

/* ── Pills ──────────────────────────────────────────────────── */
.stack-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 2rem;
}

.pill {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding: 0.35rem 0.85rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 2px;
  color: var(--steel);
  letter-spacing: 0.02em;
  transition: border-color 0.2s, color 0.2s;
}

.pill:hover { border-color: var(--cyan); color: var(--cyan); cursor: default; }

/* ── Terminal ───────────────────────────────────────────────── */
.terminal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.terminal-bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1rem;
  background: rgba(255,255,255,0.03);
  border-bottom: 1px solid var(--border);
}

.dot { width: 10px; height: 10px; border-radius: 50%; }
.dot-r { background: #FF5F57; }
.dot-y { background: #FEBC2E; }
.dot-g { background: #28C840; }

.terminal-body {
  padding: 1.25rem 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.8;
  color: var(--muted);
}

.terminal-body .prompt { color: var(--cyan); }
.terminal-body .output { color: #6B8FAF; }

.cursor {
  display: inline-block;
  width: 9px;
  height: 1em;
  background: var(--cyan);
  vertical-align: text-bottom;
  animation: blink 1s step-end infinite;
}

@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }

/* ── Price Cards ────────────────────────────────────────────── */
.preise-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  margin-top: 3.5rem;
}

.price-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  position: relative;
  transition: transform 0.25s;
}

.price-card:hover { transform: translateY(-3px); }

.price-card.featured {
  border-color: var(--cyan);
  background: linear-gradient(160deg, rgba(0,212,255,0.06) 0%, var(--surface) 60%);
}

.price-badge {
  position: absolute;
  top: -1px;
  right: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  background: var(--cyan);
  color: var(--bg);
  padding: 0.2rem 0.6rem;
  border-radius: 0 0 4px 4px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.price-name {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.price-amount {
  font-family: var(--font-display);
  font-size: 2.6rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: -0.03em;
  line-height: 1;
}

.price-amount sup {
  font-size: 1rem;
  vertical-align: super;
  color: var(--muted);
  font-weight: 400;
}

.price-period {
  font-size: 0.82rem;
  color: var(--muted);
  margin-top: 0.3rem;
  margin-bottom: 1.75rem;
}

.price-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-bottom: 2rem;
}

.price-features li {
  font-size: 0.87rem;
  color: var(--steel);
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
}

.price-features li::before {
  content: '→';
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  margin-top: 0.1rem;
  flex-shrink: 0;
}

/* ── Forms ──────────────────────────────────────────────────── */
.kontakt-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }

label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  display: block;
  margin-bottom: 0.4rem;
}

input, textarea, select {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.7rem 0.9rem;
  font-family: var(--font-body);
  font-size: 0.88rem;
  color: var(--steel);
  outline: none;
  transition: border-color 0.2s;
  -webkit-appearance: none;
  appearance: none;
}

input:focus, textarea:focus, select:focus { border-color: var(--cyan); }
textarea { resize: vertical; min-height: 120px; }
select { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%238B95A3' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 0.9rem center; padding-right: 2rem; }
select option { background: var(--surface); }

/* ── Footer ─────────────────────────────────────────────────── */
footer {
  padding: 1.75rem 4rem;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--bg);
}

footer p {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--muted);
}

footer a { color: var(--muted); text-decoration: none; }
footer a:hover { color: var(--cyan); opacity: 1; }

/* ── Page Hero (inner pages) ────────────────────────────────── */
.page-hero {
  padding: 9rem 4rem 5rem;
  position: relative;
  overflow: hidden;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}

.page-hero .hero-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,212,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,212,255,0.025) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}

.page-hero .hero-glow {
  position: absolute;
  top: -8rem; right: -8rem;
  width: 40rem; height: 40rem;
  background: radial-gradient(circle, rgba(0,212,255,0.07) 0%, transparent 70%);
  pointer-events: none;
}

.page-hero-breadcrumb {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--muted);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.page-hero-breadcrumb a { color: var(--muted); }
.page-hero-breadcrumb a:hover { color: var(--cyan); opacity: 1; }
.page-hero-breadcrumb span { color: var(--border); }

/* ── Prose Content (legal pages etc) ───────────────────────── */
.prose {
  max-width: 68ch;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--steel);
}

.prose h2 {
  font-size: 1.3rem;
  margin-top: 3rem;
  margin-bottom: 0.75rem;
  color: var(--white);
}

.prose h3 {
  font-size: 1rem;
  margin-top: 2rem;
  margin-bottom: 0.5rem;
  color: var(--steel);
}

.prose p { margin-bottom: 1rem; color: var(--muted); }
.prose ul { margin: 0.75rem 0 1rem 1.25rem; color: var(--muted); }
.prose li { margin-bottom: 0.4rem; }
.prose a { color: var(--cyan); }
.prose strong { color: var(--steel); font-weight: 500; }

/* ── Info blocks (contact sidebar) ─────────────────────────── */
.info-block { margin-bottom: 0.25rem; }
.info-block p, .info-block a { font-size: 0.95rem; color: var(--steel); text-decoration: none; }
.info-block a:hover { color: var(--cyan); opacity: 1; }

/* ── Back link ──────────────────────────────────────────────── */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--muted);
  text-decoration: none;
  letter-spacing: 0.04em;
  transition: color 0.2s;
  margin-bottom: 3rem;
}

.back-link:hover { color: var(--cyan); opacity: 1; }

/* ── CTA Banner ─────────────────────────────────────────────── */
.cta-banner {
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 4rem;
  text-align: center;
}

.cta-banner h2 { margin-bottom: 1rem; }
.cta-banner p { color: var(--muted); margin-bottom: 2rem; max-width: 48ch; margin-left: auto; margin-right: auto; }
.cta-banner .btn-row { display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap; }

/* ── Leistung Detail Page ───────────────────────────────────── */
.leistung-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 5rem;
  align-items: start;
  padding: 5rem 4rem;
}

.leistung-content h2 {
  font-size: 1.5rem;
  margin-top: 2.5rem;
  margin-bottom: 0.75rem;
}

.leistung-content p {
  color: var(--muted);
  line-height: 1.75;
  margin-bottom: 1rem;
}

.leistung-content ul {
  margin: 0.5rem 0 1.5rem 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.leistung-content ul li {
  font-size: 0.9rem;
  color: var(--muted);
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
}

.leistung-content ul li::before {
  content: '→';
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  margin-top: 0.15rem;
  flex-shrink: 0;
}

.leistung-sidebar {
  position: sticky;
  top: 6rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.sidebar-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
}

.sidebar-box h3 {
  font-size: 0.9rem;
  margin-bottom: 1rem;
  color: var(--white);
}

.sidebar-box .price-tag {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: -0.02em;
}

.sidebar-box .price-note {
  font-size: 0.78rem;
  color: var(--muted);
  margin-top: 0.25rem;
  margin-bottom: 1.25rem;
}

.sidebar-links { display: flex; flex-direction: column; gap: 0.6rem; }
.sidebar-links a {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: color 0.2s;
}
.sidebar-links a:hover { color: var(--cyan); opacity: 1; }

/* ── Related cards strip ────────────────────────────────────── */
.related-section {
  padding: 5rem 4rem;
  background: var(--surface);
  border-top: 1px solid var(--border);
}

.related-section h2 { margin-bottom: 2.5rem; font-size: 1.4rem; }

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 960px) {
  nav { padding: 1rem 1.5rem; }

  .nav-links { display: none; position: absolute; top: 100%; left: 0; right: 0; flex-direction: column; gap: 0; background: rgba(10,15,30,0.97); border-bottom: 1px solid var(--border); padding: 0; }
  .nav-links.open { display: flex; }
  .nav-links li { border-top: 1px solid var(--border); }
  .nav-links a { display: block; padding: 1rem 1.5rem; text-transform: uppercase; }
  .nav-links a.nav-cta { border: none; border-radius: 0; color: var(--cyan); }

  .nav-burger { display: flex; }

  section { padding: 4rem 1.5rem; }
  .divider { margin: 0 1.5rem; }
  .page-hero { padding: 7rem 1.5rem 3.5rem; }
  footer { flex-direction: column; gap: 0.5rem; text-align: center; padding: 1.5rem; }

  .leistung-layout { grid-template-columns: 1fr; gap: 3rem; padding: 3rem 1.5rem; }
  .leistung-sidebar { position: static; }
  .form-row { grid-template-columns: 1fr; }
  .cta-banner { padding: 3rem 1.5rem; }
  .related-section { padding: 3.5rem 1.5rem; }
}

@media (prefers-reduced-motion: reduce) {
  .cursor { animation: none; opacity: 1; }
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}