/* ============================================
   DOSSIER ZULU — Landing Page Styles
   ============================================ */

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

/* --- Variables --- */
:root {
  /* Colors */
  --slate-950: #0b1120;
  --slate-900: #111827;
  --slate-800: #1e293b;
  --slate-700: #334155;
  --slate-600: #475569;
  --slate-400: #94a3b8;
  --slate-300: #cbd5e1;
  --slate-200: #e2e8f0;
  --slate-100: #f1f5f9;
  --slate-50: #f8fafc;
  --cyan-400: #22d3ee;
  --cyan-500: #06b6d4;
  --cyan-600: #0891b2;
  --cyan-900: #164e63;
  --white: #ffffff;

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Fira Mono', 'Roboto Mono', monospace;

  /* Spacing */
  --section-padding: clamp(4rem, 8vw, 8rem);
  --container-max: 1120px;
  --container-padding: clamp(1.25rem, 4vw, 2rem);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 300ms ease;
}

/* --- Base --- */
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body {
  font-family: var(--font-sans);
  font-size: clamp(1rem, 1vw + 0.75rem, 1.125rem);
  line-height: 1.6;
  color: var(--slate-300);
  background-color: var(--slate-950);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

/* --- Skip Link --- */
.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  padding: 0.5rem 1rem;
  background: var(--cyan-400);
  color: var(--slate-950);
  font-weight: 600;
  z-index: 1000;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 0.5rem;
}

/* --- Container --- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  border: none;
  border-radius: 0;
  cursor: pointer;
  transition: background-color var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast);
}

.btn--primary {
  background-color: var(--cyan-400);
  color: var(--slate-950);
}

.btn--primary:hover {
  background-color: var(--cyan-500);
  box-shadow: 0 0 20px rgba(34, 211, 238, 0.3);
}

.btn--ghost {
  background: transparent;
  color: var(--slate-300);
  border: 1px solid var(--slate-600);
}

.btn--ghost:hover {
  border-color: var(--slate-400);
  color: var(--white);
}

.btn--large {
  padding: 1rem 2.5rem;
  font-size: 1.0625rem;
}

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1rem 0;
  transition: background-color var(--transition-base), border-color var(--transition-base), padding var(--transition-base);
  border-bottom: 1px solid transparent;
}

.nav.is-scrolled {
  background-color: rgba(11, 17, 32, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom-color: var(--slate-800);
  padding: 0.625rem 0;
}

.nav__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--white);
  white-space: nowrap;
}

.nav__logo svg {
  color: var(--cyan-400);
}

.nav__links {
  display: flex;
  gap: 1.75rem;
  margin-left: auto;
}

.nav__links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--slate-400);
  transition: color var(--transition-fast);
}

.nav__links a:hover {
  color: var(--white);
}

/* --- Language Switcher --- */
.lang-switcher {
  display: flex;
  gap: 2px;
  border: 1px solid var(--slate-700);
}

.lang-switcher__btn {
  background: transparent;
  border: none;
  color: var(--slate-500);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  padding: 0.3rem 0.5rem;
  cursor: pointer;
  transition: color var(--transition-fast), background-color var(--transition-fast);
  font-family: var(--font-sans);
}

.lang-switcher__btn:hover {
  color: var(--white);
}

.lang-switcher__btn.is-active {
  background-color: var(--slate-800);
  color: var(--cyan-400);
}

.nav__cta {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 1.25rem;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  background-color: var(--cyan-400);
  color: var(--slate-950);
  border-radius: 0;
  transition: background-color var(--transition-fast);
}

.nav__cta:hover {
  background-color: var(--cyan-500);
}

.nav__mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav__mobile-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--white);
  transition: transform var(--transition-base), opacity var(--transition-fast);
}

/* --- Hero --- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--slate-950) url('../assets/crimescene1.jpg') center/cover no-repeat;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--slate-950);
  opacity: 0.88;
  z-index: 0;
}

#hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.hero__content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 720px;
  padding: 0 var(--container-padding);
}

.hero__eyebrow {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--cyan-400);
  margin-bottom: 1.5rem;
}

.hero__headline {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
  line-height: 1.08;
  color: var(--white);
  margin-bottom: 1.25rem;
  letter-spacing: -0.02em;
}

.hero__sub {
  font-size: clamp(1.0625rem, 1.5vw, 1.25rem);
  line-height: 1.6;
  color: var(--slate-400);
  margin-bottom: 2.5rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero__ctas {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* --- Sections --- */
.section {
  padding: var(--section-padding) 0;
}

.section--dark {
  background-color: var(--slate-950);
}

.section--light {
  background-color: var(--slate-50);
  color: var(--slate-800);
}

.section--accent {
  background-color: var(--slate-900);
  border-top: 1px solid var(--slate-800);
  border-bottom: 1px solid var(--slate-800);
}

.section__headline {
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin-bottom: 2.5rem;
  text-align: center;
}

.section--light .section__headline {
  color: var(--slate-900);
}

.section--dark .section__headline,
.section--accent .section__headline {
  color: var(--white);
}

/* --- Problem Section --- */
.problem__content {
  max-width: 680px;
  margin: 0 auto;
}

.section--light .problem__content p {
  color: var(--slate-600);
  margin-bottom: 1.5rem;
}

.section--light .problem__content em {
  font-style: italic;
  color: var(--slate-800);
}

.problem__quote {
  margin-top: 2.5rem;
  padding: 1.5rem 2rem;
  border-left: 3px solid var(--cyan-500);
  background-color: var(--white);
}

.problem__quote p {
  font-size: clamp(1.0625rem, 1.5vw, 1.25rem);
  font-style: italic;
  color: var(--slate-800);
  line-height: 1.6;
  margin-bottom: 0 !important;
}

/* --- Features Grid --- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin-top: 1rem;
}

.feature-card {
  background-color: var(--slate-900);
  border: 1px solid var(--slate-800);
  padding: 2rem;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.feature-card:hover {
  border-color: var(--slate-700);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
}

.feature-card__icon {
  color: var(--cyan-400);
  margin-bottom: 1.25rem;
}

.feature-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 0.75rem;
}

.feature-card p {
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--slate-400);
}

/* --- Confidence Section --- */
.confidence__text {
  max-width: 680px;
  margin: 0 auto;
  text-align: center;
  font-size: clamp(1rem, 1.2vw, 1.125rem);
  line-height: 1.7;
  color: var(--slate-400);
}

.confidence__text strong {
  color: var(--cyan-400);
  font-weight: 600;
}

/* --- Platforms Grid --- */
.platforms-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 1rem;
}

.platform-card {
  text-align: center;
}

.platform-card__mockup {
  margin-bottom: 1.5rem;
}

.platform-card__placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  background-color: var(--slate-200);
  border: 1px solid var(--slate-300);
  color: var(--slate-500);
  font-size: 0.8125rem;
  font-weight: 500;
}

.platform-card__placeholder--desktop {
  aspect-ratio: 16 / 10;
}

.platform-card__placeholder--mobile {
  aspect-ratio: 9 / 16;
  max-width: 200px;
  margin: 0 auto;
}

.platform-card__placeholder--visionpro {
  aspect-ratio: 16 / 10;
}

.platform-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--slate-900);
  margin-bottom: 0.5rem;
}

.platform-card p {
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--slate-600);
}

/* --- Why Zulu Section --- */
.section--zulu {
  text-align: center;
}

.zulu__alpha {
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  color: var(--slate-600);
  margin-bottom: 1.5rem;
  text-transform: uppercase;
}

.section--zulu .section__headline {
  margin-bottom: 1.25rem;
}

.zulu__sub {
  font-size: clamp(1.125rem, 2vw, 1.5rem);
  font-weight: 600;
  color: var(--cyan-400);
  letter-spacing: -0.01em;
}

/* --- CTA Section --- */
.section--cta {
  text-align: center;
  padding-bottom: 6rem;
}

.cta__sub {
  max-width: 600px;
  margin: 0 auto 2.5rem;
  font-size: clamp(1rem, 1.2vw, 1.125rem);
  color: var(--slate-400);
  line-height: 1.7;
}

.cta__email {
  margin-top: 1.5rem;
  font-size: 0.875rem;
  color: var(--slate-600);
  font-family: var(--font-mono);
}

/* --- Footer --- */
.footer {
  background-color: var(--slate-950);
  border-top: 1px solid var(--slate-800);
  padding: 1.5rem 0;
  text-align: center;
}

.footer p {
  font-size: 0.8125rem;
  color: var(--slate-600);
}

.footer__link {
  display: inline-block;
  margin-top: 0.5rem;
  font-size: 0.75rem;
  color: var(--slate-600);
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--slate-400);
}

/* --- Imprint Page --- */
.imprint {
  padding: calc(5rem + var(--section-padding)) 0 var(--section-padding);
}

.imprint__back {
  display: inline-block;
  font-size: 0.875rem;
  color: var(--cyan-400);
  margin-bottom: 2rem;
  transition: color var(--transition-fast);
}

.imprint__back:hover {
  color: var(--cyan-500);
}

.imprint__title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--white);
  margin-bottom: 3rem;
  letter-spacing: -0.02em;
}

.imprint__section {
  margin-bottom: 3rem;
}

.imprint__section h2 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--slate-800);
}

.imprint__dl {
  display: grid;
  grid-template-columns: minmax(10rem, 14rem) 1fr;
  gap: 1rem 2rem;
}

.imprint__dl dt {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--slate-400);
}

.imprint__dl dd {
  font-size: 0.9375rem;
  color: var(--slate-300);
  line-height: 1.6;
}

.imprint__dl dd a {
  color: var(--cyan-400);
  transition: color var(--transition-fast);
}

.imprint__dl dd a:hover {
  color: var(--cyan-500);
}

@media (max-width: 768px) {
  .imprint__dl {
    grid-template-columns: 1fr;
    gap: 0.25rem;
  }

  .imprint__dl dt {
    margin-top: 1rem;
  }

  .imprint__dl dt:first-child {
    margin-top: 0;
  }
}

/* --- Lightbox --- */
.platform-card__placeholder img {
  cursor: pointer;
  transition: opacity var(--transition-fast);
}

.platform-card__placeholder img:hover {
  opacity: 0.85;
}

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.9);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
  cursor: pointer;
}

.lightbox.is-active {
  opacity: 1;
  visibility: visible;
}

.lightbox__img {
  max-width: 90vw;
  max-height: 90vh;
  object-fit: contain;
  transform: scale(0.95);
  transition: transform var(--transition-base);
}

.lightbox.is-active .lightbox__img {
  transform: scale(1);
}

/* ============================================
   RESPONSIVE
   ============================================ */

/* Tablet */
@media (max-width: 1024px) {
  .features-grid {
    gap: 1.25rem;
  }

  .feature-card {
    padding: 1.5rem;
  }
}

/* Mobile */
@media (max-width: 768px) {
  .nav__links,
  .nav__cta {
    display: none;
  }

  .lang-switcher {
    margin-left: auto;
  }

  .nav__mobile-toggle {
    display: flex;
  }

  /* Mobile menu open state */
  .nav.menu-open .nav__links {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: rgba(11, 17, 32, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 1.5rem var(--container-padding);
    border-bottom: 1px solid var(--slate-800);
    gap: 1.25rem;
  }

  .nav.menu-open .nav__links a {
    font-size: 1rem;
  }

  .nav.menu-open .nav__mobile-toggle span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

  .nav.menu-open .nav__mobile-toggle span:nth-child(2) {
    opacity: 0;
  }

  .nav.menu-open .nav__mobile-toggle span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .platforms-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
  }

  .hero__ctas {
    flex-direction: column;
    align-items: center;
  }

  .hero__ctas .btn {
    width: 100%;
    max-width: 280px;
    justify-content: center;
  }
}