/* ===== SIDEBAR ===== */
.sidebar {
  display: none;
  flex-direction: column;
  height: 100vh;
  width: 250px;
  padding: var(--space-medium);
  background: var(--color-white);
  border-right: 1px solid var(--color-slate-200);
  box-shadow: var(--shadow-small);
  overflow-y: auto;
}

.sidebar-header {
  display: flex;
  align-items: center;
  gap: var(--space-medium);
  margin-bottom: var(--space-medium);
  padding: var(--space-medium) 0;
  border-bottom: 1px solid var(--color-slate-200);
}

.sidebar-logo {
  height: 48px;
  width: auto;
  border-radius: var(--radius-medium);
  object-fit: contain;
  flex-shrink: 0;
}

.sidebar .user {
  font-weight: var(--font-weight-semibold);
  font-size: 1.125rem;
  color: var(--color-slate-900);
  margin: 0;
}

.sidebar .spacer {
  flex: 1;
}

/* ===== NAVIGATION LINKS ===== */
.nav-links {
  display: grid;
  gap: var(--space-extra-small);
}

.nav-links a {
  padding: var(--space-small) var(--space-medium);
  border-radius: var(--radius-medium);
  text-decoration: none;
  color: var(--color-slate-600);
  font-weight: var(--font-weight-medium);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.nav-links a::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--primary-color);
  transform: scaleY(0);
  transition: transform var(--transition-normal);
  border-radius: 0 2px 2px 0;
}

.nav-links a.active::before {
  transform: scaleY(1);
}

.nav-links a.active {
  font-weight: var(--font-weight-semibold);
  color: var(--primary-color);
  background: linear-gradient(135deg, var(--primary-alpha) 0%, rgba(37, 99, 235, 0.05) 100%);
}

.nav-links a:hover:not(.active) {
  background: var(--color-slate-100);
  color: var(--color-slate-900);
  transform: translateX(2px);
}

/* ===== MOBILE NAVBAR ===== */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
  padding: 0 var(--space-medium);
  background: var(--color-white);
  border-bottom: 1px solid var(--color-slate-200);
  box-shadow: var(--shadow-small);
  backdrop-filter: blur(10px);
  z-index: var(--z-index-dropdown);
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: var(--space-small);
}

.navbar-logo {
  height: 32px;
  width: auto;
  border-radius: var(--radius-small);
  object-fit: contain;
}

.navbar .user {
  font-weight: var(--font-weight-semibold);
  font-size: 1.125rem;
  color: var(--color-slate-900);
}

/* ===== MENU BUTTON ===== */
.menu-btn {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border: none;
  border-radius: var(--radius-medium);
  background: transparent;
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
}

.menu-btn:hover {
  background: var(--color-slate-100);
  transform: scale(1.05);
}

.menu-btn:active {
  transform: scale(0.95);
}

.menu-icon {
  width: 24px;
  height: 3px;
  background: var(--color-slate-900);
  position: relative;
  border-radius: 2px;
  transition: all var(--transition-normal);
}

.menu-icon::before,
.menu-icon::after {
  content: "";
  position: absolute;
  left: 0;
  width: 24px;
  height: 3px;
  background: var(--color-slate-900);
  border-radius: 2px;
  transition: all var(--transition-normal);
}

.menu-icon::before { 
  top: -8px; 
}

.menu-icon::after { 
  top: 8px; 
}

/* ===== MOBILE MENU OVERLAY ===== */
.mobile-menu {
  position: fixed;
  inset: 0;
  background: var(--color-white);
  transform: translateY(-150%);
  transition: transform var(--transition-slow);
  display: flex;
  flex-direction: column;
  z-index: var(--z-index-modal);
  backdrop-filter: blur(10px);
}

.mobile-menu.open {
  transform: translateY(0);
}

.mobile-menu::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--primary-alpha) 0%, rgba(37, 99, 235, 0.02) 100%);
  pointer-events: none;
}

.mobile-menu__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-medium);
  border-bottom: 1px solid var(--color-slate-200);
  background: var(--color-white);
  position: relative;
  z-index: 1;
}

.mobile-menu-brand {
  display: flex;
  align-items: center;
  gap: var(--space-small);
}

.mobile-menu-logo {
  height: 32px;
  width: auto;
  border-radius: var(--radius-small);
  object-fit: contain;
}

.mobile-menu__header .user {
  font-weight: var(--font-weight-semibold);
  font-size: 1.125rem;
  color: var(--color-slate-900);
}

.mobile-menu__body {
  flex: 1;
  display: grid;
  place-items: center;
  padding: var(--space-extra-large);
  position: relative;
  z-index: 1;
}

.mobile-menu__footer {
  padding: var(--space-medium);
  border-top: 1px solid var(--color-slate-200);
  background: var(--color-white);
  position: relative;
  z-index: 1;
}

.mobile-menu .nav-links {
  width: min(90vw, 300px);
  text-align: center;
  gap: var(--space-medium);
}

.mobile-menu .nav-links a {
  padding: var(--space-medium);
  border: 1px solid var(--color-slate-200);
  border-radius: var(--radius-large);
  background: var(--color-white);
  box-shadow: var(--shadow-small);
  font-size: 1.125rem;
  transition: all var(--transition-normal);
}

.mobile-menu .nav-links a:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
  background: var(--color-slate-100);
}

.mobile-menu .nav-links a.active {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  color: var(--color-white);
  border-color: var(--primary-color);
  box-shadow: var(--shadow-large);
}

/* ===== CLOSE BUTTON ===== */
.close-btn {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border: none;
  border-radius: var(--radius-medium);
  background: transparent;
  cursor: pointer;
  transition: all var(--transition-normal);
}

.close-btn:hover {
  background: var(--color-slate-100);
  transform: scale(1.05);
}

.close-btn:active {
  transform: scale(0.95);
}

.close-icon {
  width: 24px;
  height: 24px;
  position: relative;
}

.close-icon::before,
.close-icon::after {
  content: "";
  position: absolute;
  top: 11px;
  left: 0;
  width: 24px;
  height: 3px;
  background: var(--color-slate-900);
  border-radius: 2px;
  transition: all var(--transition-normal);
}

.close-icon::before { 
  transform: rotate(45deg); 
}

.close-icon::after { 
  transform: rotate(-45deg); 
}

/* ===== RESPONSIVE ===== */
@media (min-width: 1024px) {
  .page-wrapper {
    grid-template-columns: 250px 1fr;
  }
  
  .sidebar {
    display: flex;
  }
  
  .navbar {
    display: none;
  }
}

/* ===== MOBILE MENU ANIMATIONS ===== */
@media (prefers-reduced-motion: no-preference) {
  .mobile-menu.open .nav-links a {
    animation: slideInUp 0.6s ease backwards;
  }
  
  .mobile-menu.open .nav-links a:nth-child(1) { animation-delay: 0.1s; }
  .mobile-menu.open .nav-links a:nth-child(2) { animation-delay: 0.2s; }
  .mobile-menu.open .nav-links a:nth-child(3) { animation-delay: 0.3s; }
  .mobile-menu.open .nav-links a:nth-child(4) { animation-delay: 0.4s; }
  .mobile-menu.open .nav-links a:nth-child(5) { animation-delay: 0.5s; }

  @keyframes slideInUp {
    from {
      opacity: 0;
      transform: translateY(30px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
}