/* ============================================
   MAIN STYLES - Style Hexagon Robotics
   Utilise le design-system.css
   ============================================ */

/* ============================================
   NAVIGATION
   ============================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  background-color: transparent;
  transition: all var(--transition-base);
  padding: var(--space-sm) 0;
}

.nav.scrolled {
  background-color: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(10px);
  border-bottom: var(--border-width) solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.nav__container {
  margin: 0 auto;
  padding: 0 var(--space-sm);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav__logo img {
  display: block;
  height: 40px;
  width: auto;
}

.nav__menu {
  display: flex;
  list-style: none;
  gap: var(--space-md);
  align-items: center;
  margin: 0;
  padding: 0;
}

.nav__link {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-normal);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-gray-500);
  text-decoration: none;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

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

.nav__link.active {
  color: var(--color-primary);
  background-color: transparent;
  border: var(--border-width-thick) solid var(--color-primary);
}

.nav__link--cta {
  border: var(--border-width-thick) solid var(--color-primary);
  color: var(--color-primary);
}

.nav__link--cta:hover {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
}

/* Mobile Navigation */
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-xs);
}

.nav__toggle-line {
  width: 24px;
  height: 2px;
  background-color: var(--color-black);
  transition: all var(--transition-fast);
}

@media (max-width: 768px) {
  .nav__toggle {
    display: flex;
  }

  .nav__menu {
    position: fixed;
    top: 73px;
    left: 0;
    right: 0;
    flex-direction: column;
    background-color: var(--color-white);
    padding: var(--space-md);
    gap: var(--space-sm);
    box-shadow: var(--shadow-lg);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
  }

  .nav__menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
}

/* ============================================
   HERO
   ============================================ */
.hero {
  min-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-black);
  background-image: url('/assets/Lili-o_index_hero.png');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  color: var(--color-white);
  padding: calc(var(--space-2xl) * 2) var(--space-md);
  position: relative;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 1;
}

.hero__container {
  position: relative;
  z-index: 2;
  max-width: var(--content-width);
  margin: 0 auto;
  text-align: center;
}

.hero__title {
  font-family: var(--font-serif);
  font-size: var(--font-size-5xl);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-tight);
  margin-bottom: var(--space-lg);
  color: var(--color-white);
}

.hero__title-highlight {
  color: var(--color-primary);
  font-style: italic;
}

.hero__subtitle {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--space-xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero__cta {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  flex-wrap: wrap;
}

.hero__cta .btn {
  border-color: var(--color-white);
  color: var(--color-white);
}

.hero__cta .btn--primary {
  background-color: var(--color-white);
  color: var(--color-black);
}

.hero__cta .btn--primary:hover {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
}

.hero__cta .btn--secondary:hover {
  background-color: var(--color-white);
  color: var(--color-black);
}

@media (max-width: 768px) {
  .hero {
    min-height: 80vh;
  }

  .hero__title {
    font-size: var(--font-size-3xl);
  }

  .hero__subtitle {
    font-size: var(--font-size-base);
  }
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background-color: var(--color-black);
  color: rgba(255, 255, 255, 0.8);
  padding: var(--space-2xl) 0 var(--space-md);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.footer__logo {
  filter: brightness(0) invert(1);
  margin-bottom: var(--space-sm);
}

.footer__tagline {
  color: rgba(255, 255, 255, 0.6);
  font-size: var(--font-size-sm);
}

.footer__title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-white);
  margin-bottom: var(--space-sm);
}

.footer__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  padding: 0;
  margin: 0;
}

.footer__list a {
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--font-size-sm);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

.footer__bottom {
  padding-top: var(--space-md);
  border-top: var(--border-width) solid rgba(255, 255, 255, 0.1);
  text-align: center;
}

.footer__copyright {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.5);
  margin: 0;
}

@media (max-width: 768px) {
  .footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
  }

  .footer__brand {
    grid-column: 1 / -1;
  }
}

/* ============================================
   FORMS
   ============================================ */
.form-group {
  margin-bottom: var(--space-md);
}

.form-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--space-sm);
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  color: var(--color-text);
  background-color: var(--color-white);
  border: var(--border-width) solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

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

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

/* ============================================
   RESPONSIVE TYPOGRAPHY
   ============================================ */
@media (max-width: 768px) {
  :root {
    --font-size-5xl: 2.5rem;
    --font-size-4xl: 2rem;
    --font-size-3xl: 1.75rem;
  }
}