/* ==========================================================================
   LiesTech Corporate Website – Stylesheet
   Farbpalette und Designsystem aus dem offiziellen Brandboard
   ========================================================================== */

/* ---------- Design Tokens ---------- */
:root {
  --color-deep-navy: #0B0F1A;
  --color-dark-gray: #1A1F2B;
  --color-electric-blue: #1DA1FF;
  --color-violet: #7B3FE4;
  --color-cool-gray: #A0A7B5;
  --color-white: #FFFFFF;

  --gradient-primary: linear-gradient(90deg, #1DA1FF 0%, #7B3FE4 100%);
  --gradient-soft: linear-gradient(135deg, rgba(29,161,255,0.15) 0%, rgba(123,63,228,0.15) 100%);

  --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.35);
  --shadow-glow: 0 0 40px rgba(123, 63, 228, 0.35);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-pill: 999px;

  --container: 1200px;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
img, svg { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
ul { list-style: none; padding: 0; margin: 0; }

/* ---------- Base ---------- */
body {
  font-family: var(--font-sans);
  background-color: var(--color-deep-navy);
  color: var(--color-white);
  line-height: 1.6;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  position: relative;
}

body::before {
  content: '';
  position: fixed;
  top: -20%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(123,63,228,0.18), transparent 60%);
  filter: blur(60px);
  z-index: 0;
  pointer-events: none;
}

body::after {
  content: '';
  position: fixed;
  bottom: -20%;
  left: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(29,161,255,0.15), transparent 60%);
  filter: blur(60px);
  z-index: 0;
  pointer-events: none;
}

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

h1, h2, h3, h4 {
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin: 0 0 0.5em;
}

h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.6rem); }
h3 { font-size: 1.25rem; }

p { color: var(--color-cool-gray); margin: 0 0 1em; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.eyebrow {
  display: inline-block;
  color: var(--color-electric-blue);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 26px;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-primary);
  color: var(--color-white);
  box-shadow: 0 8px 24px rgba(123, 63, 228, 0.4);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 30px rgba(123, 63, 228, 0.55); }

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  color: var(--color-white);
  border: 1px solid rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
}
.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(29, 161, 255, 0.4);
  transform: translateY(-2px);
}

.btn-ghost { color: var(--color-electric-blue); padding: 8px 0; font-weight: 600; font-size: 0.95rem; }
.btn-ghost::after { content: '→'; margin-left: 6px; transition: transform 0.2s; }
.btn-ghost:hover::after { transform: translateX(4px); }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 15, 26, 0.75);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 0;
  gap: 24px;
}

.nav__logo { display: flex; align-items: center; gap: 10px; }
.nav__logo img {
  display: block;
  width: auto;
  height: 34px;
}
.nav__logo-text {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.nav__logo-text .accent { color: var(--color-electric-blue); }

.footer-col .nav__logo img { height: 32px; }

.nav__links { display: flex; gap: 28px; align-items: center; }
.nav__links a {
  font-size: 0.95rem;
  color: var(--color-cool-gray);
  font-weight: 500;
  transition: color 0.2s;
  position: relative;
}
.nav__links a:hover, .nav__links a.active { color: var(--color-white); }
.nav__links a.active::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -8px;
  height: 2px;
  background: var(--gradient-primary);
  border-radius: 2px;
}

.nav__cta { display: flex; align-items: center; gap: 12px; }

.nav__burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}
.nav__burger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-white);
  border-radius: 2px;
  transition: transform 0.2s, opacity 0.2s;
}

/* ---------- Hero ---------- */
.hero {
  padding: 80px 0 100px;
  position: relative;
}

.hero__grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 60px;
  align-items: center;
}

.hero__title {
  font-size: clamp(2.4rem, 5vw, 3.8rem);
  font-weight: 700;
  margin-bottom: 24px;
}

.hero__subtitle {
  font-size: 1.1rem;
  color: var(--color-cool-gray);
  margin-bottom: 32px;
  max-width: 560px;
}

.hero__cta { display: flex; flex-wrap: wrap; gap: 14px; }

.hero__visual {
  position: relative;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-lg);
  background: var(--gradient-soft);
  border: 1px solid rgba(255, 255, 255, 0.08);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero__visual::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 30% 30%, rgba(29,161,255,0.35), transparent 50%),
    radial-gradient(circle at 70% 70%, rgba(123,63,228,0.45), transparent 55%);
}

.hero__visual svg {
  position: relative;
  width: 70%;
  height: auto;
  filter: drop-shadow(0 20px 40px rgba(123, 63, 228, 0.5));
}

/* ---------- Sections ---------- */
.section {
  padding: 90px 0;
  position: relative;
}
.section--alt { background: linear-gradient(180deg, transparent, rgba(26, 31, 43, 0.5), transparent); }

.section__header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 56px;
}

/* ---------- Service Cards ---------- */
.services {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.service-card {
  background: rgba(26, 31, 43, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
  display: flex;
  flex-direction: column;
}

.service-card:hover {
  transform: translateY(-6px);
  border-color: rgba(29, 161, 255, 0.4);
  box-shadow: var(--shadow-card);
}

.service-card__icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  background: var(--gradient-soft);
  border: 1px solid rgba(29, 161, 255, 0.25);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 22px;
  color: var(--color-electric-blue);
}
.service-card__icon svg { width: 28px; height: 28px; stroke: currentColor; fill: none; stroke-width: 1.8; }

.service-card h3 { margin-bottom: 8px; }
.service-card p { font-size: 0.95rem; flex-grow: 1; }

/* ---------- Featured / Detail blocks ---------- */
.feature-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  padding: 60px 0;
}
.feature-block:nth-child(even) > .feature-block__visual { order: -1; }

.feature-block__visual {
  aspect-ratio: 4/3;
  border-radius: var(--radius-lg);
  background: var(--gradient-soft);
  border: 1px solid rgba(255, 255, 255, 0.08);
  display: flex; align-items: center; justify-content: center;
}
.feature-block__visual svg { width: 50%; color: var(--color-white); stroke: currentColor; fill: none; stroke-width: 1.4; }

.feature-list { display: flex; flex-direction: column; gap: 10px; margin: 18px 0 28px; }
.feature-list li {
  position: relative;
  padding-left: 26px;
  color: var(--color-cool-gray);
}
.feature-list li::before {
  content: '';
  position: absolute;
  left: 0; top: 9px;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--gradient-primary);
  box-shadow: 0 0 0 4px rgba(123, 63, 228, 0.15);
}

/* ---------- About / Team ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}
.stat {
  background: rgba(26, 31, 43, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
}
.stat__number {
  font-size: 2.4rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.stat__label { color: var(--color-cool-gray); font-size: 0.95rem; }

.values {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  margin-top: 40px;
}
.value-card {
  background: rgba(26, 31, 43, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
  padding: 28px;
}
.value-card h3 { font-size: 1.1rem; }
.value-card p { font-size: 0.95rem; }

/* ---------- Projects ---------- */
.project-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.project-card {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-dark-gray);
  border: 1px solid rgba(255, 255, 255, 0.06);
  transition: transform 0.25s ease;
}
.project-card:hover { transform: translateY(-6px); }
.project-card__image {
  aspect-ratio: 4/3;
  background: var(--gradient-soft);
  position: relative;
  overflow: hidden;
  display: flex; align-items: center; justify-content: center;
}
.project-card__image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 30%, rgba(29,161,255,0.25), transparent 55%),
              radial-gradient(circle at 70% 70%, rgba(123,63,228,0.35), transparent 60%);
}
.project-card__image svg {
  position: relative;
  z-index: 1;
  width: 40%;
  color: var(--color-white);
  stroke: currentColor;
  fill: none;
  stroke-width: 1.4;
}
.project-card__body { padding: 22px; }
.project-card__tag {
  display: inline-block;
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-electric-blue);
  margin-bottom: 10px;
  font-weight: 600;
}
.project-card h3 { font-size: 1.1rem; margin-bottom: 6px; }
.project-card p { font-size: 0.92rem; margin: 0; }

/* ---------- Contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: start;
}

.contact-info { padding-top: 8px; }
.contact-info__item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 22px;
}
.contact-info__icon {
  flex-shrink: 0;
  width: 42px; height: 42px;
  border-radius: var(--radius-sm);
  background: var(--gradient-soft);
  border: 1px solid rgba(29, 161, 255, 0.25);
  color: var(--color-electric-blue);
  display: flex; align-items: center; justify-content: center;
}
.contact-info__icon svg { width: 20px; height: 20px; stroke: currentColor; fill: none; stroke-width: 1.8; }
.contact-info__label { font-size: 0.8rem; color: var(--color-cool-gray); text-transform: uppercase; letter-spacing: 0.1em; }
.contact-info__value { color: var(--color-white); font-weight: 500; }
.contact-info__value a:hover { color: var(--color-electric-blue); }

.form {
  background: rgba(26, 31, 43, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form__group { display: flex; flex-direction: column; gap: 6px; }
.form__label { font-size: 0.85rem; color: var(--color-cool-gray); }

.form__input,
.form__textarea {
  background: rgba(11, 15, 26, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  font-size: 0.95rem;
  color: var(--color-white);
  font-family: inherit;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.form__input:focus,
.form__textarea:focus {
  outline: none;
  border-color: rgba(29, 161, 255, 0.6);
  box-shadow: 0 0 0 3px rgba(29, 161, 255, 0.15);
}
.form__textarea { min-height: 130px; resize: vertical; }

.form__check {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--color-cool-gray);
}
.form__check input { margin-top: 4px; accent-color: var(--color-violet); }

/* ---------- CTA Banner ---------- */
.cta-banner {
  margin: 60px 0;
  padding: 56px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(29,161,255,0.18), rgba(123,63,228,0.25));
  border: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
}
.cta-banner h2 { margin-bottom: 12px; }
.cta-banner p { max-width: 580px; margin: 0 auto 26px; }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 60px 0 24px;
  margin-top: 40px;
  position: relative;
  z-index: 1;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-col h4 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-white);
  margin-bottom: 16px;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col a { color: var(--color-cool-gray); font-size: 0.92rem; transition: color 0.2s; }
.footer-col a:hover { color: var(--color-electric-blue); }
.footer-col p { font-size: 0.92rem; }

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  color: var(--color-cool-gray);
  font-size: 0.88rem;
}

/* ---------- Legal pages ---------- */
.legal { padding: 60px 0; }
.legal h1 { margin-bottom: 32px; }
.legal h2 { margin-top: 36px; font-size: 1.4rem; }
.legal h3 { margin-top: 24px; font-size: 1.1rem; }
.legal p, .legal li { color: var(--color-cool-gray); }
.legal ul { padding-left: 22px; list-style: disc; }
.legal a { color: var(--color-electric-blue); }
.legal .placeholder {
  background: rgba(29, 161, 255, 0.1);
  border: 1px dashed rgba(29, 161, 255, 0.4);
  border-radius: 4px;
  padding: 1px 6px;
  font-style: italic;
  color: var(--color-electric-blue);
}

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .hero { padding: 50px 0 70px; }
  .hero__grid { grid-template-columns: 1fr; gap: 40px; }
  .services { grid-template-columns: repeat(2, 1fr); }
  .feature-block { grid-template-columns: 1fr; gap: 30px; padding: 30px 0; }
  .feature-block:nth-child(even) > .feature-block__visual { order: 0; }
  .about-grid, .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .stats, .values, .project-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .section { padding: 60px 0; }

  .nav__links {
    position: fixed;
    inset: 64px 0 auto 0;
    flex-direction: column;
    gap: 0;
    padding: 24px;
    background: rgba(11, 15, 26, 0.96);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    transform: translateY(-110%);
    transition: transform 0.3s ease;
    align-items: stretch;
  }
  .nav__links.open { transform: translateY(0); }
  .nav__links a {
    padding: 14px 4px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  }
  .nav__links a.active::after { display: none; }
  .nav__burger { display: flex; }
  .nav__cta .btn { display: none; }
}

@media (max-width: 600px) {
  .services, .stats, .values, .project-grid, .footer-grid { grid-template-columns: 1fr; }
  .form__row { grid-template-columns: 1fr; }
  .cta-banner { padding: 36px 22px; }
  h1 { font-size: 2.1rem; }
}

/* ---------- Animations ---------- */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
.fade-up { animation: fadeUp 0.7s ease-out both; }
.fade-up.delay-1 { animation-delay: 0.1s; }
.fade-up.delay-2 { animation-delay: 0.2s; }
.fade-up.delay-3 { animation-delay: 0.3s; }
.fade-up.delay-4 { animation-delay: 0.4s; }