/* ══════════════════════════════════════════════════════════════
   SIDEBAR
   ══════════════════════════════════════════════════════════════ */

.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--white);
  border-right: 1px solid var(--gray-100);
  display: flex;
  flex-direction: column;
  z-index: 100;
  transition: width var(--transition-base), transform var(--transition-base);
  overflow: hidden;
}

/* Header */
.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-5) var(--sp-5);
  border-bottom: 1px solid var(--gray-100);
  min-height: var(--header-height);
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
}

.logo-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--primary), var(--primary-hover));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 16px;
  flex-shrink: 0;
  box-shadow: var(--shadow-sm);
}

.logo-text {
  font-family: var(--font-sans);
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--stone-900);
  white-space: nowrap;
}

.logo-pro {
  color: var(--primary);
  font-size: 12px;
  vertical-align: super;
  margin-left: 2px;
}

.sidebar-collapse-btn {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  border: none;
  background: transparent;
  color: var(--gray-400);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.sidebar-collapse-btn:hover {
  background: var(--gray-100);
  color: var(--gray-700);
}

/* Navigation */
.sidebar-nav {
  flex: 1;
  padding: var(--sp-4) var(--sp-3);
  overflow-y: auto;
}

.nav-list {
  display: flex;
  flex-direction: column;
  gap: var(--sp-1);
}

.nav-item a {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: 10px 14px;
  border-radius: var(--radius-md);
  color: var(--gray-600);
  font-weight: 500;
  font-size: 13.5px;
  transition: all var(--transition-fast);
  white-space: nowrap;
  position: relative;
}

.nav-item a i {
  width: 20px;
  text-align: center;
  font-size: 15px;
  flex-shrink: 0;
}

.nav-item a:hover {
  background: var(--gray-50);
  color: var(--gray-900);
}

.nav-item.active a {
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 600;
}

.nav-item.active a::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 20px;
  background: var(--primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.nav-badge {
  margin-left: auto;
  background: var(--primary);
  color: var(--white);
  font-size: 10px;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: var(--radius-full);
  line-height: 1.4;
}

/* Footer */
.sidebar-footer {
  padding: var(--sp-4) var(--sp-3);
  border-top: 1px solid var(--gray-100);
}

.sidebar-ai-widget {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: 10px 14px;
  margin-bottom: var(--sp-3);
  background: linear-gradient(135deg, rgba(255, 122, 26, 0.08), rgba(255, 122, 26, 0.03));
  border: 1px solid rgba(255, 122, 26, 0.12);
  border-radius: var(--radius-md);
  color: var(--primary);
  font-weight: 600;
  font-size: 13px;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  white-space: nowrap;
}

.sidebar-ai-widget:hover {
  background: var(--primary-light);
  border-color: var(--primary);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.ai-pulse {
  position: absolute;
  top: 10px;
  left: 12px;
  width: 8px;
  height: 8px;
  background: var(--success);
  border-radius: 50%;
  animation: pulse 2s ease infinite;
}

.sidebar-ai-widget i {
  font-size: 16px;
  margin-left: 10px;
}

.sidebar-user-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 14px;
}

.sidebar-user {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
}

.theme-toggle {
  background: transparent;
  border: none;
  color: var(--gray-400);
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: 14px;
}

.theme-toggle:hover {
  background: var(--surface-alt);
  color: var(--gray-800);
}

.user-avatar {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--primary), var(--primary-hover));
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 12px;
  flex-shrink: 0;
}

.user-info {
  display: flex;
  flex-direction: column;
  white-space: nowrap;
  overflow: hidden;
}

.user-name {
  font-weight: 600;
  font-size: 13px;
  color: var(--gray-800);
}

.user-role {
  font-size: 11px;
  color: var(--gray-400);
}

/* ══════════════════════════════════════════════════════════════
   COLLAPSED STATE
   ══════════════════════════════════════════════════════════════ */

.sidebar-collapsed .sidebar {
  width: var(--sidebar-collapsed);
}

.sidebar-collapsed .logo-text,
.sidebar-collapsed .logo-pro,
.sidebar-collapsed .nav-item a span,
.sidebar-collapsed .nav-badge,
.sidebar-collapsed .sidebar-ai-widget span,
.sidebar-collapsed .ai-pulse,
.sidebar-collapsed .user-info {
  opacity: 0;
  width: 0;
  overflow: hidden;
  white-space: nowrap;
}

.sidebar-collapsed .sidebar-collapse-btn i {
  transform: rotate(180deg);
}

.sidebar-collapsed .sidebar-logo {
  justify-content: center;
}

.sidebar-collapsed .sidebar-header {
  justify-content: center;
  padding: var(--sp-5) var(--sp-2);
}

.sidebar-collapsed .sidebar-collapse-btn {
  display: none;
}

.sidebar-collapsed .nav-item a {
  justify-content: center;
  padding: 10px;
}

.sidebar-collapsed .sidebar-ai-widget {
  justify-content: center;
  padding: 10px;
}

.sidebar-collapsed .sidebar-ai-widget i {
  margin-left: 0;
}

.sidebar-collapsed .sidebar-user {
  justify-content: center;
}

.sidebar-collapsed .theme-toggle {
  display: none;
}

.sidebar-collapsed .sidebar-user-row {
  justify-content: center;
  padding: 8px;
}

/* ══════════════════════════════════════════════════════════════
   MOBILE SIDEBAR
   ══════════════════════════════════════════════════════════════ */

@media (max-width: 1024px) {
  .sidebar {
    transform: translateX(-100%);
    box-shadow: var(--shadow-xl);
  }

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

  .sidebar-collapse-btn {
    display: none;
  }
}

/* ══════════════════════════════════════════════════════════════
   DARK MODE — Sidebar Overrides
   ══════════════════════════════════════════════════════════════ */

:root[data-theme="dark"] .nav-item.active a {
  background: rgba(255, 122, 26, 0.12);
  color: var(--orange-400);
}

:root[data-theme="dark"] .nav-item a:hover {
  background: rgba(255, 255, 255, 0.05);
}

:root[data-theme="dark"] .sidebar-ai-widget:hover {
  background: rgba(255, 122, 26, 0.12);
}