/* ============================================================
   NIBRA v2 — header.css (dark black+blue scheme)
   ============================================================ */

/* ---- HEADER BASE ---- */
.dp-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: 70px;
  display: flex;
  align-items: center;
  background: rgba(5, 8, 15, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--nb-border);
  transition: background .3s, box-shadow .3s;
}
.dp-header.dp-header-scrolled {
  background: rgba(5, 8, 15, 0.97);
  box-shadow: 0 4px 30px rgba(0,0,0,.6), 0 0 0 1px var(--nb-border);
}
.dp-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* ---- LOGO ---- */
.dp-logo-text {
  display: flex;
  align-items: center;
  gap: .6rem;
  text-decoration: none;
  flex-shrink: 0;
}
.dp-logo-icon {
  width: 34px; height: 34px;
  background: linear-gradient(135deg, var(--nb-blue), var(--nb-blue3));
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--nb-font-head);
  font-weight: 800; font-size: .95rem; color: #fff;
  box-shadow: 0 4px 14px rgba(26,107,255,.4);
  overflow: hidden;
  flex-shrink: 0;
}
.dp-logo-icon img { width: 22px; height: 22px; object-fit: contain; filter: brightness(0) invert(1); }
.dp-logo-name { font-family: var(--nb-font-head); font-size: 1.1rem; font-weight: 800; letter-spacing: -.02em; line-height: 1; }
.dp-logo-dev  { color: var(--nb-text); }
.dp-logo-pro  { color: var(--nb-blue); }

/* ---- NAV ---- */
.dp-nav-list {
  display: flex;
  align-items: center;
  gap: .25rem;
  list-style: none;
}
.dp-nav-item { position: relative; }
.dp-nav-link {
  display: flex;
  align-items: center;
  gap: .3rem;
  padding: .5rem .85rem;
  font-size: .85rem;
  font-weight: 600;
  color: var(--nb-muted);
  text-decoration: none;
  border-radius: 7px;
  transition: all .25s;
  white-space: nowrap;
}
.dp-nav-link:hover, .dp-nav-link.dp-nav-active {
  color: var(--nb-text);
  background: var(--nb-blue-a10);
}
.dp-nav-link.dp-nav-active { color: var(--nb-cyan); }
.dp-nav-arrow { font-size: .65rem; transition: transform .25s; display: inline-block; }
.dp-has-dropdown:hover .dp-nav-arrow { transform: rotate(180deg); }

/* Dropdown */
.dp-nav-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 200px;
  background: var(--nb-surface);
  border: 1.5px solid var(--nb-border2);
  border-radius: var(--nb-radius);
  box-shadow: var(--nb-shadow-lg);
  opacity: 0; visibility: hidden;
  transform: translateY(-6px);
  transition: all .25s;
  z-index: 100;
  list-style: none;
  padding: .5rem;
}
.dp-has-dropdown:hover .dp-nav-dropdown,
.dp-has-dropdown:focus-within .dp-nav-dropdown {
  opacity: 1; visibility: visible; transform: translateY(0);
}
.dp-nav-dropdown .dp-nav-link {
  padding: .55rem .9rem; border-radius: 7px; font-size:.83rem;
}
.dp-nav-dropdown .dp-nav-link:hover { background: var(--nb-blue-a10); }

/* ---- HEADER ACTIONS ---- */
.dp-header-actions { display: flex; align-items: center; gap: .75rem; flex-shrink: 0; }
.dp-header-cta { padding: .5rem 1.3rem; font-size: .82rem; }

/* ---- HAMBURGER ---- */
.dp-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px; height: 36px;
  background: var(--nb-surface);
  border: 1.5px solid var(--nb-border);
  border-radius: 8px;
  padding: 0 8px;
  cursor: pointer;
  transition: all .25s;
}
.dp-hamburger:hover { border-color: var(--nb-border2); }
.dp-ham-bar {
  display: block;
  width: 100%; height: 2px;
  background: var(--nb-muted);
  border-radius: 2px;
  transition: all .3s;
}
.dp-ham-active .dp-ham-bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.dp-ham-active .dp-ham-bar:nth-child(2) { opacity: 0; transform: scaleX(0); }
.dp-ham-active .dp-ham-bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---- OVERLAY ---- */
.dp-nav-overlay {
  position: fixed; inset: 0; z-index: 98;
  background: rgba(0,0,0,.7);
  backdrop-filter: blur(4px);
  opacity: 0; visibility: hidden; transition: all .3s;
}
.dp-nav-overlay.dp-overlay-active { opacity: 1; visibility: visible; }

/* ============================================================
   MOBILE NAV
   ============================================================ */
@media(max-width: 900px) {
  .dp-hamburger { display: flex; }
  .dp-header-cta { display: none; }

  .dp-nav {
    position: fixed;
    top: 0; right: -300px; bottom: 0;
    width: 280px;
    background: var(--nb-surface);
    border-left: 1px solid var(--nb-border2);
    z-index: 99;
    overflow-y: auto;
    padding: 5rem 1.5rem 2rem;
    transition: right .35s cubic-bezier(.4,0,.2,1);
    box-shadow: -20px 0 60px rgba(0,0,0,.6);
  }
  .dp-nav.dp-nav-open { right: 0; }
  .dp-nav-list { flex-direction: column; align-items: stretch; gap: .25rem; }
  .dp-nav-link { padding: .75rem 1rem; font-size: .95rem; }

  .dp-nav-dropdown {
    position: static; opacity: 1; visibility: visible;
    transform: none; box-shadow: none;
    border: none; background: transparent;
    padding: 0 0 0 1rem; display: none;
    border-left: 2px solid var(--nb-border);
    margin-top:.25rem; margin-left:.5rem;
  }
  .dp-dropdown-open .dp-nav-dropdown { display: block; }
}