/* === NAVBAR === */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--nav-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.navbar.scrolled {
  background: var(--nav-scrolled);
  border-bottom-color: var(--border);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

/* Logo */
.nav-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  text-decoration: none;
}

.logo-img {
  height: 48px;
  width: auto;
  object-fit: contain;
}

.logo-text-fallback {
  display: none;
  flex-direction: column;
  font-family: 'Orbitron', sans-serif;
  font-size: 1.1rem;
  font-weight: 900;
  letter-spacing: 0.15em;
  color: var(--text-primary);
  line-height: 1;
}

.logo-text-fallback span {
  font-size: 0.55rem;
  letter-spacing: 0.35em;
  color: var(--accent);
  font-weight: 600;
  margin-top: 4px;
}

/* Nav Links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  font-family: 'Inter', sans-serif;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 8px 12px;
  border-radius: 4px;
  transition: color 0.2s ease;
  text-decoration: none;
  white-space: nowrap;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--accent);
}

.nav-links .nav-cta {
  font-family: 'Orbitron', sans-serif;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent) !important;
  border: 1px solid var(--accent);
  padding: 8px 18px;
  border-radius: 3px;
  transition: background 0.25s ease, color 0.25s ease, box-shadow 0.25s ease !important;
  margin-left: 8px;
}

.nav-links .nav-cta:hover {
  background: var(--accent);
  color: #fff !important;
  box-shadow: 0 0 16px var(--accent-glow);
}

/* Nav Actions */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

/* Theme Toggle */
.theme-toggle {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-secondary);
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
  position: relative;
  overflow: hidden;
}

.theme-toggle:hover {
  border-color: var(--accent);
  box-shadow: 0 0 12px var(--accent-glow);
  transform: rotate(20deg);
}

.theme-icon {
  position: absolute;
  transition: opacity 0.3s ease, transform 0.3s ease;
  line-height: 1;
}

[data-theme="dark"] .theme-icon.sun { opacity: 1; transform: scale(1); }
[data-theme="dark"] .theme-icon.moon { opacity: 0; transform: scale(0.5); }
[data-theme="light"] .theme-icon.sun { opacity: 0; transform: scale(0.5); }
[data-theme="light"] .theme-icon.moon { opacity: 1; transform: scale(1); }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 8px;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-secondary);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease, background 0.3s ease;
  transform-origin: center;
}

.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); background: var(--accent); }
.hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); background: var(--accent); }

/* === MOBILE NAV === */

@media (max-width: 900px) {
  .hamburger {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--nav-scrolled);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 16px 24px 24px;
    border-bottom: 1px solid var(--border);
    transform: translateY(-110%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.35s ease, opacity 0.35s ease;
  }

  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .nav-links li {
    border-bottom: 1px solid var(--border);
  }

  .nav-links li:last-child {
    border-bottom: none;
  }

  .nav-links a {
    display: block;
    padding: 14px 8px;
    font-size: 0.95rem;
  }

  .nav-links .nav-cta {
    display: block;
    text-align: center;
    margin: 12px 0 0;
    padding: 12px;
    border-radius: 3px;
  }
}

@media (max-width: 480px) {
  .nav-container {
    padding: 0 16px;
  }
  .logo-img {
    height: 40px;
  }
}