/* =============================
   HEADER (DESKTOP)
============================= */
.sb-header {
  position: sticky;
  top: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(14px);
  transition: background 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
  border-bottom: 1px solid rgba(0, 0, 0, 0.015);
}
.sb-header.scrolled {
  background: rgba(255, 255, 255, 0.97);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.04);
}

.sb-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 70px;
  gap: 1.25rem;
  padding: 0.7rem 0;
}

.sb-header__logo img {
  height: 90px;
  width: auto;
  display: block;
  transition: transform 0.25s ease;
}
.sb-header.scrolled .sb-header__logo img {
  transform: scale(0.94);
}

/* =============================
   DESKTOP NAV
============================= */
.sb-header__nav ul {
  display: flex;
  gap: 1.6rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.sb-header__nav a {
  position: relative;
  text-decoration: none;
  font-weight: 600;
  font-size: 1.2rem;
  color: #0a1a2f;
  transition: color 0.2s ease;
}
.sb-header__nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 0;
  height: 2px;
  background: #0a1a2f;
  border-radius: 99px;
  transition: width 0.18s ease;
}
.sb-header__nav a:hover,
.sb-header__nav a.active {
  color: #0056b3;
}
.sb-header__nav a:hover::after,
.sb-header__nav a.active::after {
  width: 100%;
}

/* =============================
   ACTIONS / CTA
============================= */
.sb-header__actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.sb-btn {
  background: linear-gradient(90deg, #0072ff 0%, #00c6ff 100%);
  color: #fff;
  border-radius: 999px;
  padding: 0.5rem 1.1rem;
  font-size: 0.78rem;
  font-weight: 600;
  border: none;
  text-decoration: none;
  white-space: nowrap;
  box-shadow: 0 8px 22px rgba(0, 114, 255, 0.25);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.sb-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 28px rgba(0, 114, 255, 0.28);
}

/* =============================
   HAMBURGER
============================= */
.menu-toggle {
  display: none;
  width: 32px;
  height: 24px;
  flex-direction: column;
  justify-content: space-between;
  background: transparent;
  border: none;
  cursor: pointer;
}
.menu-toggle span {
  width: 100%;
  height: 3px;
  background: #0a1a2f;
  border-radius: 999px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.menu-toggle.open span:nth-child(1) {
  transform: translateY(10px) rotate(45deg);
}
.menu-toggle.open span:nth-child(2) {
  opacity: 0;
}
.menu-toggle.open span:nth-child(3) {
  transform: translateY(-10px) rotate(-45deg);
}

/* =============================
   MOBILE BASE (hidden desktop)
============================= */
.mobile-overlay,
.mobile-drawer {
  display: none;
}

/* =============================
   MOBILE (<= 992px)
============================= */
@media (max-width: 992px) {
  /* hide desktop nav, show burger */
  .sb-header__nav {
    display: none;
  }
  .menu-toggle {
    display: flex;
  }

  /* overlay behind drawer */
  .mobile-overlay {
    position: fixed;
    inset: 0;
    background: rgba(5, 10, 20, 0.4);
    backdrop-filter: blur(3px);
    z-index: 999;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease;
    display: block;
  }
  .mobile-overlay.open {
    opacity: 1;
    pointer-events: auto;
  }

  /* drawer FROM LEFT */
  .mobile-drawer {
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    width: 78vw;
    max-width: 360px;
    background: #ffffff;
    z-index: 1000;
    transform: translateX(-100%);
    transition: transform 0.22s ease-out;
    display: flex;
    flex-direction: column;
    gap: 1.3rem;
    padding: 1.2rem 1.4rem 1.4rem;
    box-shadow: 20px 0 45px rgba(0, 0, 0, 0.08);
  }
  .mobile-drawer.open {
    transform: translateX(0);
  }

  /* top row in drawer */
  .mobile-drawer__top {
    display: flex;
    align-items: center;
    justify-content: space-between;
  }
  .mobile-logo img {
    height: 42px;
  }
  .mobile-close {
    background: transparent;
    border: none;
    font-size: 1.35rem;
    line-height: 1;
    cursor: pointer;
  }

  /* mobile nav links */
  .mobile-nav {
    list-style: none;
    margin: 0.5rem 0 0 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 1rem;
  }
  .mobile-nav a {
    text-decoration: none;
    color: #0a1a2f;
    font-size: 1.05rem;
    font-weight: 600;
  }
  .mobile-nav a:active {
    color: #0072ff;
  }

  /* footer inside drawer */
  .mobile-footer {
    margin-top: auto;
    border-top: 1px solid rgba(10, 26, 47, 0.06);
    padding-top: 1rem;
  }
  .mobile-footer p {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 0.5rem;
    color: #0a1a2f;
  }
  .mobile-social {
    display: flex;
    gap: 0.55rem;
  }
  .mobile-social a {
    width: 30px;
    height: 30px;
    display: grid;
    place-items: center;
    border-radius: 999px;
    background: #0a1a2f;
    color: #fff;
    font-size: 0.65rem;
  }
}

/* =============================
   XS tweaks
============================= */
@media (max-width: 576px) {
  .sb-btn {
    display: none;
  }
  .sb-header__logo img {
    height: 50px;
  }
}

/* disable background scroll when drawer open */
body.no-scroll {
  overflow: hidden;
}