/* =====================================================
   layout.css — Header, Footer, Container, Nav, Sections
   ===================================================== */

/* ---- Container ---- */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--content-pad-x);
}

/* ---- Section Base ---- */
.section { padding: var(--sp-2xl) 0; }
.section-alt { background: var(--bg-cream); }

.section-tag {
  display: block;
  font-family: var(--font-en);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 0.5rem;
}
.section-tag.accent { color: var(--accent); }

.section-title {
  font-size: clamp(1.5rem, 3.5vw, 2rem);
  font-weight: 800;
  line-height: 1.4;
  margin-bottom: 0.75rem;
}

.section-desc {
  color: var(--text-light);
  font-size: 0.925rem;
  line-height: 1.85;
  margin-bottom: 2.5rem;
}
.section-desc small { font-size: 0.8em; }

/* ---- Header ---- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 500;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.header.scrolled {
  border-color: var(--border-warm);
  box-shadow: var(--shadow-sm);
}
.header-inner {
  display: flex;
  align-items: center;
  gap: 2rem;
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding-inline: var(--content-pad-x);
}

.logo { flex-shrink: 0; }
.logo-text {
  font-family: var(--font-deco);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 0;
}

/* ---- Navigation ---- */
.nav { flex: 1; }
.nav-list {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.125rem;
}
.nav-list a {
  padding: 0.5rem 0.8rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-light);
  transition: color var(--transition);
}
.nav-list a:hover {
  opacity: 1;
  color: var(--text-main);
}
.header-cta {
  flex-shrink: 0;
  font-size: 0.85rem;
  padding: 0.6rem 1.35rem;
}
.header-cta:hover { transform: none; }

/* ---- Dropdown ---- */
.has-dropdown { position: relative; }
.dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: #fff;
  border: 1px solid var(--border-warm);
  border-radius: var(--r-md);
  padding: 0.5rem;
  white-space: nowrap;
  box-shadow: var(--shadow-md);
  z-index: 10;
  min-width: 160px;
}
.has-dropdown:hover .dropdown { display: block; }
.dropdown a {
  display: block;
  padding: 0.5rem 1rem;
  border-radius: var(--r-sm);
  font-size: 0.85rem;
}

/* ---- Mobile Toggle ---- */
.menu-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  cursor: pointer;
  width: 40px;
  height: 40px;
  padding: 0;
  margin-left: auto;
  background: rgba(0, 174, 239, 0.12);
  border: none;
  border-radius: 12px;
}
.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.menu-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.open span:nth-child(2) { opacity: 0; }
.menu-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---- Footer ---- */
.footer {
  background: #16213E;
  color: rgba(255, 255, 255, 0.75);
  padding: var(--sp-xl) 0 var(--sp-md);
}
.footer-inner {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-xl);
  margin-bottom: var(--sp-lg);
}
.footer-logo {
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.4rem;
}
.footer-tagline {
  font-size: 0.78rem;
  opacity: 0.55;
}
.footer-nav {
  display: flex;
  gap: var(--sp-xl);
  margin-left: auto;
}
.footer-nav-col {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.footer-nav-col a {
  font-size: 0.83rem;
  opacity: 0.65;
  transition: opacity var(--transition);
}
.footer-nav-col a:hover { opacity: 1; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: var(--sp-md);
  text-align: center;
  font-size: 0.72rem;
  opacity: 0.4;
}

/* ---- Mobile Sticky CTA ---- */
.mobile-sticky-cta {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 200;
  padding: 0.75rem 1rem;
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(8px);
  border-top: 1px solid var(--border-warm);
  box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.08);
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
  .header-cta { display: none; }

  .nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: #fff;
    z-index: 400;
    flex: none;
    display: flex;
    flex-direction: column;
    padding: calc(var(--header-h) + 2.5rem) 0 2rem;
    overflow-y: auto;
    transform: translateX(100%);
    visibility: hidden;
    transition: transform 0.38s cubic-bezier(0.32, 0.72, 0, 1), visibility 0s linear 0.38s;
  }
  .nav.open {
    transform: translateX(0);
    visibility: visible;
    transition: transform 0.38s cubic-bezier(0.32, 0.72, 0, 1), visibility 0s linear;
  }
  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    width: 100%;
    padding: 0 var(--content-pad-x);
  }
  .nav-list a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 0.7rem 0;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-main);
    border-bottom: 1px solid var(--border-warm);
    overflow: hidden;
  }
  .nav-list a::after {
    content: '';
    flex-shrink: 0;
    width: 6px;
    height: 6px;
    border-right: 1.5px solid var(--text-light);
    border-top: 1.5px solid var(--text-light);
    transform: rotate(45deg);
    margin-left: 0.5rem;
    margin-right: 1px;
  }
  .dropdown { display: none !important; }
  .menu-toggle { display: flex; position: relative; z-index: 500; }
  .logo { position: relative; z-index: 500; }

  .mobile-sticky-cta { display: block; }

  .section { padding: var(--sp-xl) 0; }

  .footer-inner { flex-direction: column; gap: var(--sp-md); }
  .footer-nav { flex-direction: column; gap: var(--sp-md); margin-left: 0; }
}