/* ═══ HEADER ════════════════════════════════════════════════════════════════ */
.sbmat-header {
  position: sticky;
  top: 0;
  z-index: 100;
  width: 100%;
  background: linear-gradient(135deg, rgba(255,255,255,.06) 0%, rgba(255,255,255,.10) 100%);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--accent);
  border-radius: 0 0 24px 24px;
  transition: background var(--tr);
}

.sbmat-header.is-scrolled {
  background: rgba(10,10,10,.9);
}

.sbmat-header__inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  height: 64px;
  padding-inline: var(--pad-x);
}

/* ── Nav ── */
.sbmat-nav {
  display: flex;
  gap: 32px;
  align-items: center;
}

.sbmat-nav__link {
  font-family: var(--font-ubuntu);
  font-size: 14px;
  font-weight: 400;
  color: rgba(255,255,255,.7);
  text-transform: lowercase;
  letter-spacing: .04em;
  text-decoration: none;
  transition: color var(--tr);
  position: relative;
}
.sbmat-nav__link::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0; right: 0;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transition: transform var(--tr);
  transform-origin: left;
}
.sbmat-nav__link:hover,
.sbmat-nav__link.is-active { color: var(--accent); }
.sbmat-nav__link:hover::after,
.sbmat-nav__link.is-active::after { transform: scaleX(1); }

/* ── Logo ── */
.sbmat-logo {
  justify-self: center;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  text-decoration: none;
  user-select: none;
}

.sbmat-logo__sbm {
  font-family: var(--font-tektur);
  font-weight: 200;
  font-size: 22px;
  color: #fff;
  transition: color var(--tr);
}
.sbmat-logo__agency {
  font-family: var(--font-tektur);
  font-weight: 200;
  font-size: 22px;
  color: #fff;
  overflow: hidden;
  max-width: 0;
  opacity: 0;
  transform: translateX(-6px);
  white-space: nowrap;
  transition: max-width .4s ease, opacity .4s ease, transform .4s ease, color .4s ease;
}
.sbmat-logo:hover .sbmat-logo__sbm { color: #fff; }
.sbmat-logo:hover .sbmat-logo__agency {
  max-width: 120px;
  opacity: 1;
  transform: translateX(0);
  color: var(--accent);
}

/* ── Right side ── */
.sbmat-header__right {
  justify-self: end;
  display: flex;
  align-items: center;
  gap: 16px;
}

.sbmat-cta {
  height: 38px;
  padding: 0 22px;
  border: 1.5px solid rgba(255,255,255,.4);
  border-radius: var(--r-pill);
  background: transparent;
  color: #fff;
  font-family: var(--font-tektur);
  font-weight: 200;
  font-size: 13px;
  letter-spacing: .04em;
  cursor: pointer;
  transition: border-color var(--tr), background var(--tr), color var(--tr), box-shadow var(--tr);
}
.sbmat-cta:hover {
  border-color: var(--accent);
  background: var(--accent);
  color: #000;
  box-shadow: 0 0 24px rgba(202,254,72,.25);
}

/* ── Hamburger ── */
.sbmat-burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 32px;
  height: 32px;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.sbmat-burger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: #fff;
  border-radius: 2px;
  transition: transform var(--tr), opacity var(--tr);
  transform-origin: center;
}
.sbmat-burger.is-open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.sbmat-burger.is-open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.sbmat-burger.is-open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ── Mobile nav ── */
.sbmat-mobile-nav {
  display: none;
  flex-direction: column;
  padding: 12px var(--pad-x) 20px;
  border-top: 1px solid var(--border);
  gap: 4px;
}
.sbmat-mobile-nav.is-open { display: flex; }

.sbmat-mobile-nav__link {
  font-family: var(--font-ubuntu);
  font-size: 18px;
  font-weight: 300;
  color: rgba(255,255,255,.8);
  padding: 10px 0;
  text-decoration: none;
  border-bottom: 1px solid var(--border);
  transition: color var(--tr), padding-left var(--tr);
}
.sbmat-mobile-nav__link:last-child { border-bottom: none; }
.sbmat-mobile-nav__link:hover { color: var(--accent); padding-left: 8px; }

/* ── Modal / Contact Popup ── */
.sbmat-modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 200;
}
.sbmat-modal.is-open { display: block; }

.sbmat-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,.7);
  backdrop-filter: blur(4px);
}

.sbmat-modal__window {
  position: absolute;
  inset: auto 0 0 0;
  margin: auto;
  top: 50%;
  transform: translateY(-50%);
  width: min(480px, 94vw);
  max-height: 90svh;
  overflow-y: auto;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: clamp(24px, 4vw, 40px);
  animation: modal-in .3s ease;
}
@keyframes modal-in {
  from { opacity: 0; transform: translateY(calc(-50% + 24px)); }
  to   { opacity: 1; transform: translateY(-50%); }
}

.sbmat-modal__close {
  position: absolute;
  top: 16px; right: 16px;
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  background: var(--border);
  border: none;
  border-radius: 50%;
  color: rgba(255,255,255,.6);
  cursor: pointer;
  transition: background var(--tr), color var(--tr);
}
.sbmat-modal__close:hover { background: rgba(255,255,255,.15); color: #fff; }

.sbmat-modal__title {
  font-family: var(--font-tektur);
  font-weight: 200;
  font-size: clamp(22px, 4vw, 28px);
  margin-bottom: 6px;
}
.sbmat-modal__lead {
  color: var(--text-muted);
  font-size: 14px;
  margin-bottom: 24px;
}

.sbmat-modal__form { display: flex; flex-direction: column; gap: 14px; }

.sbmat-field { display: flex; flex-direction: column; gap: 5px; }
.sbmat-field__label { font-size: 12px; color: var(--text-muted); text-transform: uppercase; letter-spacing: .06em; }
.sbmat-field__input {
  height: 48px;
  padding: 0 18px;
  background: var(--bg3);
  border: 1.5px solid var(--border);
  border-radius: var(--r-md);
  color: #fff;
  font-family: var(--font-ubuntu);
  font-size: 15px;
  outline: none;
  transition: border-color var(--tr);
}
.sbmat-field__input::placeholder { color: var(--text-dim); }
.sbmat-field__input:focus { border-color: rgba(202,254,72,.5); }

.sbmat-field__textarea {
  height: auto;
  padding-top: 12px;
  padding-bottom: 12px;
  resize: vertical;
  min-height: 90px;
}

.sbmat-modal__btn {
  margin-top: 8px;
  height: 50px;
  background: var(--accent);
  color: #000;
  border: none;
  border-radius: var(--r-pill);
  font-family: var(--font-tektur);
  font-size: 15px;
  font-weight: 400;
  letter-spacing: .04em;
  cursor: pointer;
  transition: box-shadow var(--tr), opacity var(--tr);
}
.sbmat-modal__btn:hover { box-shadow: 0 0 32px rgba(202,254,72,.35); opacity: .92; }

.sbmat-modal__note {
  font-size: 13px;
  color: var(--accent);
  min-height: 18px;
  text-align: center;
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .sbmat-nav { display: none; }
  .sbmat-burger { display: flex; }
  .sbmat-cta { display: none; }
  .sbmat-header__inner { grid-template-columns: auto 1fr auto; }
  .sbmat-logo { justify-self: start; }
}