/* SIDEBAR STYLES */
.sidebar {
  position: fixed;
  left: 0;
  top: 0;
  width: 250px;
  height: 100vh;
  background: var(--color-surface);
  backdrop-filter: blur(20px);
  color: var(--color-text);
  transform: translateX(-100%);
  transition: transform var(--transition-medium) var(--ease-standard);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--color-border);
  box-shadow: var(--shadow-lg);
}

.sidebar::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, 
    var(--color-bg-1) 0%, 
    var(--color-bg-3) 25%,
    var(--color-bg-2) 50%,
    var(--color-bg-5) 100%);
  pointer-events: none;
}

body.sidebar-open {
  overflow: auto !important;
}

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

.sidebar-content {
  position: relative;
  z-index: 1;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.sidebar-header {
  padding: 2rem 1.5rem 1.5rem;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.sidebar-logo-icon {
  width: 48px;
  height: 48px;
  background: var(--color-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  font-weight: bold;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
  color: var(--color-btn-primary-text);
}

.sidebar-logo-icon::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.2) 50%, transparent 70%);
  transform: translateX(-100%);
  transition: transform 0.6s ease;
}

.sidebar-logo:hover .sidebar-logo-icon::before {
  transform: translateX(100%);
}

.sidebar-logo-text h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
  color: var(--color-text);
}

.sidebar-logo-text p {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  font-weight: 400;
  margin: 0;
}

.sidebar-close {
  background: var(--color-secondary);
  border: none;
  color: var(--color-text);
  font-size: 1.25rem;
  cursor: pointer;
  padding: 0.75rem;
  border-radius: var(--radius-base);
  transition: all var(--transition-fast);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-xs);
}

.sidebar-close:hover {
  background-color: var(--color-secondary-hover);
  transform: rotate(90deg);
}

.sidebar-nav {
  padding: 1.5rem 0;
  flex: 1;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--color-primary) transparent;
}

.sidebar-nav::-webkit-scrollbar {
  width: 4px;
}

.sidebar-nav::-webkit-scrollbar-track {
  background: transparent;
}

.sidebar-nav::-webkit-scrollbar-thumb {
  background: var(--color-primary);
  border-radius: 2px;
}

.nav-section {
  margin-bottom: 2.5rem;
  padding: 0 1.5rem;
}

.nav-section-title {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-secondary);
  margin-bottom: 1rem;
  padding: 0 0.5rem;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
  color: var(--color-text);
  text-decoration: none;
  border-radius: var(--radius-md);
  margin-bottom: 0.5rem;
  position: relative;
  transition: all var(--transition-fast);
  backdrop-filter: blur(10px);
  font-weight: 500;
}

.nav-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: transparent;
  border-radius: 0 2px 2px 0;
  transition: all var(--transition-fast);
}

.nav-item:hover {
  background: var(--color-secondary);
  color: var(--color-text);
  transform: translateX(8px);
  box-shadow: var(--shadow-xs);
}

.nav-item:hover::before {
  background: var(--color-primary);
}

.nav-item.active {
  background: var(--color-secondary);
  color: var(--color-text);
  box-shadow: var(--shadow-sm);
}

.nav-item.active::before {
  background: var(--color-primary);
}

.nav-item-icon {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  opacity: 0.8;
  transition: all var(--transition-fast);
}

.nav-item:hover .nav-item-icon,
.nav-item.active .nav-item-icon {
  opacity: 1;
  transform: scale(1.1);
}

.nav-item-text {
  font-size: 0.95rem;
  line-height: 1.2;
}

.nav-item-badge {
  margin-left: auto;
  background: var(--color-warning);
  color: var(--color-text);
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  min-width: 20px;
  text-align: center;
  box-shadow: var(--shadow-xs);
}

.sidebar-footer {
  margin-top: auto;
  padding: 1.5rem;
  border-top: 1px solid var(--color-border);
}

/* Contact Card in Sidebar */
.contact-card {
  background: var(--color-background);
  backdrop-filter: blur(10px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.contact-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-warning));
}

.contact-card h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--color-text);
}

.contact-card p {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  margin-bottom: 1rem;
  line-height: 1.4;
}

.contact-card .btn {
  font-size: 0.85rem;
  padding: 0.75rem 1.5rem;
  background: var(--color-primary);
  border: none;
  border-radius: var(--radius-base);
  color: var(--color-btn-primary-text);
  font-weight: 600;
  transition: all var(--transition-fast);
  width: 100%;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
}

.contact-card .btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Sidebar Overlay */
.sidebar-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(8px);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-medium);
}

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

/* Loading Animation for Sidebar */
@keyframes slideInFromLeft {
  from {
    transform: translateX(-100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

.sidebar.open .nav-item {
  animation: slideInFromLeft 0.3s ease forwards;
}

.sidebar.open .nav-item:nth-child(1) { animation-delay: 0.1s; }
.sidebar.open .nav-item:nth-child(2) { animation-delay: 0.2s; }
.sidebar.open .nav-item:nth-child(3) { animation-delay: 0.3s; }
.sidebar.open .nav-item:nth-child(4) { animation-delay: 0.4s; }
.sidebar.open .nav-item:nth-child(5) { animation-delay: 0.5s; }