/* =============================================
   NAVIGATION — DYNAMIC ISLAND STYLE
   PULSO DIGITAL
   ============================================= */

/* ---- Island Wrapper ---- */
.nav {
  position: fixed;
  top: 18px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  width: auto;
  border-bottom: none;

  /* Island morphing animation on load */
  animation: islandAppear 0.7s cubic-bezier(0.16, 1, 0.3, 1) 0.1s both;
}

@keyframes islandAppear {
  from {
    opacity: 0;
    transform: translateX(-50%) scaleX(0.4) scaleY(0.6);
  }
  to {
    opacity: 1;
    transform: translateX(-50%) scaleX(1) scaleY(1);
  }
}

/* ---- Island Pill ---- */
.nav-island {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 8px 8px 14px;
  background: rgba(18, 18, 18, 0.88);
  backdrop-filter: blur(32px) saturate(200%) brightness(1.1);
  -webkit-backdrop-filter: blur(32px) saturate(200%) brightness(1.1);
  border: 1px solid rgba(255, 255, 255, 0.10);
  border-radius: 9999px;
  box-shadow:
    0 0 0 1px rgba(0, 0, 0, 0.6),
    0 8px 32px rgba(0, 0, 0, 0.7),
    0 2px 8px rgba(0, 0, 0, 0.5),
    inset 0 1px 0 rgba(255, 255, 255, 0.06);
  transition:
    padding var(--dur-base) var(--ease-apple),
    border-radius var(--dur-base) var(--ease-apple),
    box-shadow var(--dur-base) var(--ease-apple),
    background var(--dur-base) var(--ease-apple),
    width var(--dur-slow) var(--ease-apple);
  white-space: nowrap;
  min-width: 0;
  position: relative;
  overflow: visible;
}

/* Scroll state: island gets more opaque/refined */
.nav.scrolled .nav-island {
  background: rgba(14, 14, 14, 0.95);
  border-color: rgba(255, 255, 255, 0.12);
  box-shadow:
    0 0 0 1px rgba(0, 0, 0, 0.8),
    0 16px 48px rgba(0, 0, 0, 0.8),
    0 4px 12px rgba(0, 0, 0, 0.6),
    inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

/* Subtle glow on island */
.nav-island::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  background: linear-gradient(
    135deg,
    rgba(251, 53, 2, 0.08) 0%,
    transparent 40%,
    transparent 60%,
    rgba(251, 53, 2, 0.04) 100%
  );
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--dur-base) var(--ease-apple);
  z-index: -1;
}

.nav-island:hover::before {
  opacity: 1;
}

/* ---- Logo ---- */
.nav-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  flex-shrink: 0;
  padding-right: 4px;
}

.nav-logo-img {
  height: 28px;
  width: auto;
  object-fit: contain;
  display: block;
  filter: brightness(1);
  transition: transform var(--dur-base) var(--ease-apple),
              filter var(--dur-base) var(--ease-apple);
}

.nav-logo:hover .nav-logo-img {
  transform: scale(1.04);
  filter: brightness(1.1);
}

/* Logo icon (fallback SVG) */
.nav-logo-icon {
  width: 26px;
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-logo-icon svg {
  width: 100%;
  height: 100%;
  stroke: var(--accent);
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.nav-logo-text {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.nav-logo-text span { color: var(--accent); }

/* ---- Divider between logo and links ---- */
.nav-divider {
  width: 1px;
  height: 20px;
  background: rgba(255, 255, 255, 0.12);
  border-radius: 1px;
  flex-shrink: 0;
  margin: 0 4px;
}

/* ---- Desktop Links ---- */
.nav-links {
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav-link {
  display: flex;
  align-items: center;
  padding: 7px 13px;
  font-size: 13px;
  font-weight: 400;
  color: rgba(255, 255, 255, 0.6);
  border-radius: var(--radius-full);
  transition:
    color var(--dur-fast) var(--ease-apple),
    background var(--dur-fast) var(--ease-apple),
    transform var(--dur-fast) var(--ease-apple);
  text-decoration: none;
  position: relative;
  letter-spacing: 0.005em;
}

.nav-link:hover {
  color: rgba(255, 255, 255, 0.95);
  background: rgba(255, 255, 255, 0.07);
}

.nav-link.active {
  color: rgba(255, 255, 255, 0.95);
  font-weight: 500;
}

/* Active indicator dot */
.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 3px;
  left: 50%;
  transform: translateX(-50%);
  width: 3px;
  height: 3px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 6px var(--accent);
  animation: dotAppear 0.3s var(--ease-apple) both;
}

@keyframes dotAppear {
  from { opacity: 0; transform: translateX(-50%) scale(0); }
  to   { opacity: 1; transform: translateX(-50%) scale(1); }
}

/* ---- CTA Pill Button ---- */
.nav-cta {
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 500;
  border-radius: var(--radius-full);
  letter-spacing: 0.01em;
  margin-left: 4px;
}

/* ---- Mobile toggle ---- */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  border-radius: var(--radius-full);
  transition: background var(--dur-fast) var(--ease-apple);
  margin-left: 4px;
}

.nav-toggle:hover { background: rgba(255,255,255,0.08); }

.nav-toggle span {
  display: block;
  width: 20px;
  height: 1.5px;
  background: var(--text-primary);
  border-radius: 2px;
  transition:
    transform var(--dur-base) var(--ease-apple),
    opacity var(--dur-base) var(--ease-apple);
  transform-origin: center;
}

.nav-toggle.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-toggle.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ---- Mobile Island expand ---- */
@media (max-width: 768px) {
  .nav {
    top: 14px;
    width: calc(100% - 32px);
    max-width: 400px;
  }

  .nav-island {
    width: 100%;
    padding: 8px 8px 8px 12px;
    justify-content: space-between;
  }

  .nav-links { display: none; }
  .nav-cta   { display: none; }
  .nav-toggle { display: flex; }
  .nav-divider { display: none; }
}

/* ---- Mobile Sheet ---- */
.nav-sheet {
  position: fixed;
  inset: 0;
  z-index: 999;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--dur-base) var(--ease-apple);
}

.nav-sheet.open {
  pointer-events: auto;
  opacity: 1;
}

.nav-sheet-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.nav-sheet-panel {
  position: absolute;
  top: 0; left: 50%;
  transform: translateX(-50%) translateY(-100%);
  width: calc(100% - 32px);
  max-width: 400px;
  background: rgba(14, 14, 14, 0.96);
  backdrop-filter: blur(48px) saturate(200%);
  -webkit-backdrop-filter: blur(48px) saturate(200%);
  border: 1px solid rgba(255, 255, 255, 0.10);
  border-top: none;
  border-radius: 0 0 32px 32px;
  padding: 80px var(--space-xl) var(--space-xl);
  box-shadow:
    0 0 0 1px rgba(0,0,0,0.6),
    0 24px 64px rgba(0,0,0,0.8);
  transition: transform var(--dur-slow) var(--ease-apple);
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.nav-sheet.open .nav-sheet-panel {
  transform: translateX(-50%) translateY(0);
}

.nav-sheet-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-sm);
  font-size: var(--text-xl);
  font-weight: 500;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border);
  transition: color var(--dur-fast) var(--ease-apple);
  text-decoration: none;
}

.nav-sheet-link:hover { color: var(--accent); }
.nav-sheet-link:last-of-type { border-bottom: none; }

.nav-sheet-link svg {
  width: 16px;
  height: 16px;
  stroke: var(--text-tertiary);
  stroke-width: 2;
  fill: none;
}

.nav-sheet-cta {
  margin-top: var(--space-lg);
  text-align: center;
}