/* ============================================
   SHIPMARK.TECH - Navigation Sidebar
   ============================================ */

/* Sidebar */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--bg-surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  z-index: 100;
  overflow-y: auto;
  transition: transform var(--transition-normal);
}

/* Logo */
.sidebar-logo {
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  text-decoration: none;
}

.sidebar-logo img {
  width: 40px;
  height: 40px;
}

.sidebar-logo span {
  font-size: 1.25rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Navigation */
.sidebar-nav {
  flex: 1;
  padding: var(--spacing-md) 0;
  overflow-y: auto;
}

.nav-section {
  margin-bottom: var(--spacing-md);
}

.nav-section-title {
  padding: var(--spacing-xs) var(--spacing-lg);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  transition: all var(--transition-fast);
  position: relative;
}

.nav-link:hover {
  color: var(--text-primary);
  background: var(--bg-elevated);
}

.nav-link.active {
  color: var(--primary);
  background: rgba(78, 205, 196, 0.1);
}

.nav-link.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--primary);
  border-radius: 0 2px 2px 0;
}

.nav-link-icon {
  font-size: 1rem;
  width: 20px;
  text-align: center;
}

/* Sidebar Footer */
.sidebar-footer {
  padding: var(--spacing-md) var(--spacing-lg);
  border-top: 1px solid var(--border);
}

.sidebar-footer-links {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
}

.sidebar-footer-link {
  color: var(--text-muted);
  font-size: 0.85rem;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  transition: color var(--transition-fast);
}

.sidebar-footer-link:hover {
  color: var(--primary);
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  position: fixed;
  top: var(--spacing-md);
  left: var(--spacing-md);
  z-index: 200;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--spacing-sm);
  cursor: pointer;
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

.menu-toggle:hover {
  background: var(--bg-elevated);
  border-color: var(--primary);
}

.menu-toggle svg {
  width: 24px;
  height: 24px;
  display: block;
}

/* Mobile Overlay */
.sidebar-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 90;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.sidebar-overlay.active {
  opacity: 1;
}

/* Mobile Styles */
@media (max-width: 1024px) {
  .menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .sidebar {
    transform: translateX(-100%);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .sidebar-overlay {
    display: block;
    pointer-events: none;
  }

  .sidebar-overlay.active {
    pointer-events: auto;
  }

  .main-content {
    padding-top: calc(var(--spacing-xl) + 20px);
  }
}

/* Theme Toggle (optional) */
.theme-toggle {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: var(--spacing-xs) var(--spacing-sm);
  cursor: pointer;
  color: var(--text-secondary);
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  transition: all var(--transition-fast);
  margin-top: var(--spacing-sm);
  width: 100%;
  justify-content: center;
}

.theme-toggle:hover {
  background: var(--bg-surface);
  border-color: var(--primary);
  color: var(--primary);
}