/* Sidebar component styles */
.sidebar {
  width: 280px;
  background: var(--sidebar-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-right: 1px solid var(--card-border);
  display: flex;
  flex-direction: column;
  height: 100%;
  box-sizing: border-box;
}

.sidebar-header {
  padding: 14px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  border-bottom: 1px solid var(--card-border);
  flex-shrink: 0;
}

.header-search-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--card-border);
  color: var(--text-secondary);
  width: 34px;
  height: 34px;
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.2s ease;
  padding: 0;
  margin-left: auto;
  box-sizing: border-box;
}

.header-search-btn:hover {
  background: rgba(99, 102, 241, 0.15);
  border-color: rgba(99, 102, 241, 0.3);
  color: var(--text-primary);
  box-shadow: 0 0 12px var(--accent-glow);
  transform: scale(1.05);
}

.brand-container {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.brand-link {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 800;
  background: var(--header-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.02em;
  text-decoration: none;
  line-height: 1.1;
}

.brand-link:hover {
  opacity: 0.9;
}

.brand-subtitle {
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-weight: 500;
  letter-spacing: 0.05em;
  line-height: 1;
}

.sidebar-header svg:not(.brand-logo) {
  fill: var(--accent);
  filter: drop-shadow(0 0 8px var(--accent-glow));
}

.brand-logo-link {
  display: flex;
  text-decoration: none;
}

.brand-logo {
  filter: drop-shadow(0 0 8px var(--accent-glow));
  transition: transform 0.3s ease;
}

.brand-logo:hover {
  transform: scale(1.08);
}

.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.nav-title {
  font-size: 0.75rem;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--text-secondary);
  padding: 8px 12px;
  letter-spacing: 0.05em;
}

.nav-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  border-radius: 12px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all 0.2s ease;
  border: 1px solid transparent;
}

.nav-item:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.03);
  border-color: rgba(255, 255, 255, 0.02);
}

.nav-item.active {
  color: var(--text-primary);
  background: rgba(99, 102, 241, 0.08);
  border-color: rgba(99, 102, 241, 0.15);
  box-shadow: inset 0 0 12px rgba(99, 102, 241, 0.05);
}

.pin-btn {
  opacity: 0;
  color: var(--text-secondary);
  transition: opacity 0.2s ease, color 0.2s ease, transform 0.2s ease;
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}

.nav-item:hover .pin-btn {
  opacity: 0.4;
}

.pin-btn:hover {
  opacity: 1;
  color: var(--accent);
  transform: scale(1.1);
}

.pin-btn.pinned {
  opacity: 0.8;
  color: var(--accent);
}

.nav-item-left {
  display: flex;
  align-items: center;
  gap: 12px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.nav-item-left span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.nav-item svg {
  fill: currentColor;
  flex-shrink: 0;
}

.nav-badge {
  font-size: 0.75rem;
  background: rgba(255, 255, 255, 0.08);
  padding: 2px 8px;
  border-radius: 20px;
  color: var(--text-primary);
  font-weight: 600;
}

.nav-item.active .nav-badge {
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent-glow);
}

.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--card-border);
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 12px;
  background: rgba(0, 0, 0, 0.1);
  flex-shrink: 0;
}

.sidebar-footer form.button_to {
  margin: 0;
  display: flex;
}

.sidebar-user-avatar {
  display: flex;
  align-items: center;
  justify-content: center;
}

.footer-user {
  display: flex;
  align-items: center;
  color: var(--text-secondary);
  padding: 0;
}

.user-avatar-wrapper {
  position: relative;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.user-avatar-wrapper.is-syncing::after {
  content: "";
  position: absolute;
  top: -4px;
  left: -4px;
  right: -4px;
  bottom: -4px;
  border-radius: 50%;
  border: 2px solid rgba(99, 102, 241, 0.2);
  border-top-color: var(--accent);
  border-right-color: #38bdf8;
  box-shadow: 0 0 8px var(--accent-glow);
  animation: avatar-spin 0.8s linear infinite;
  box-sizing: border-box;
  pointer-events: none;
}

@keyframes avatar-spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.user-avatar {
  width: 28px;
  height: 28px;
  background: var(--accent);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.8rem;
  box-shadow: 0 0 10px var(--accent-glow);
}

.user-email {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.btn-mailbox {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--card-border);
  color: var(--text-primary);
  padding: 10px;
  border-radius: 12px;
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  transition: all 0.2s ease;
}

.btn-mailbox:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.15);
  box-shadow: 0 0 15px rgba(255, 255, 255, 0.05);
}

.btn-logout {
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--card-border);
  color: var(--text-secondary);
  width: 28px;
  height: 28px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s ease;
  padding: 0;
}

.btn-logout:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.15);
  color: var(--text-primary);
}

.footer-admin-link {
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--card-border);
  color: var(--text-secondary);
  width: 28px;
  height: 28px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s ease;
  padding: 0;
  box-sizing: border-box;
}

.footer-admin-link:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.15);
  color: var(--accent);
}

.footer-layout-toggle-btn,
.footer-seen-toggle-btn,
.footer-theme-toggle-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--card-border);
  color: var(--text-secondary);
  width: 28px;
  height: 28px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s ease;
  padding: 0;
  box-sizing: border-box;
}

.footer-layout-toggle-btn:hover,
.footer-seen-toggle-btn:hover,
.footer-theme-toggle-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.15);
  color: var(--accent);
}

.footer-theme-toggle-btn svg {
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.footer-theme-toggle-btn:hover svg {
  transform: rotate(30deg);
}

/* ==========================================================================
   Mobile Header & Responsive Collapsible Sidebar
   ========================================================================== */

/* Mobile Top Header (Hidden on desktop by default) */
.mobile-header {
  display: none;
}

.sidebar-close-btn {
  display: none;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--card-border);
  color: var(--text-secondary);
  width: 34px;
  height: 34px;
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.2s ease;
  padding: 0;
  box-sizing: border-box;
}

.sidebar-close-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.15);
  color: var(--text-primary);
}

/* Sidebar Backdrop Overlay */
.sidebar-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 998;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body.sidebar-open .sidebar-backdrop {
  opacity: 1;
  pointer-events: auto;
}

/* Responsive Off-Canvas Drawer (Mobile Portrait & Landscape) */
@media (max-width: 768px), (orientation: landscape) and (max-height: 550px) {
  /* Mobile Header Bar */
  .mobile-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    height: 48px;
    margin-bottom: 16px;
    flex-shrink: 0;
    padding: 0 4px;
    box-sizing: border-box;
    width: 100%;
  }

  .mobile-menu-btn,
  .mobile-action-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--card-border);
    color: var(--text-primary);
    width: 38px;
    height: 38px;
    border-radius: 10px;
    cursor: pointer;
    padding: 0;
    transition: all 0.2s ease;
    flex-shrink: 0;
  }

  .mobile-menu-btn:hover,
  .mobile-action-btn:hover {
    background: rgba(99, 102, 241, 0.15);
    border-color: rgba(99, 102, 241, 0.3);
    color: var(--accent);
  }

  .mobile-header-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.1rem;
    font-weight: 700;
    min-width: 0;
    overflow: hidden;
  }

  .mobile-title-brand {
    font-size: 1.2rem;
    font-weight: 800;
    background: var(--header-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.02em;
    flex-shrink: 0;
  }

  .mobile-title-separator {
    color: var(--text-secondary);
    font-weight: 300;
    opacity: 0.4;
    flex-shrink: 0;
  }

  .mobile-title-text {
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.95rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .mobile-header-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
  }

  /* Show sidebar close button inside drawer */
  .sidebar-close-btn {
    display: flex;
  }

  /* Off-canvas sidebar */
  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    height: 100vh;
    height: 100dvh;
    width: 290px;
    max-width: 85vw;
    z-index: 999;
    background: rgba(15, 23, 42, 0.96);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-right: 1px solid var(--card-border);
    transform: translateX(-100%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: none;
    padding-left: max(0px, env(safe-area-inset-left));
  }

  :root[data-theme="light"] .sidebar {
    background: rgba(248, 250, 252, 0.96);
  }

  body.sidebar-open .sidebar {
    transform: translateX(0);
    box-shadow: 0 0 50px rgba(0, 0, 0, 0.7);
  }

  .sidebar-nav {
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }
}

/* Extra landscape compactness for short height devices */
@media (orientation: landscape) and (max-height: 500px) {
  .mobile-header {
    height: 38px;
    margin-bottom: 10px;
  }

  .mobile-menu-btn,
  .mobile-action-btn {
    width: 32px;
    height: 32px;
  }

  .sidebar-header {
    padding: 10px 14px;
  }

  .sidebar-nav {
    padding: 10px 12px;
    gap: 4px;
  }

  .nav-item {
    padding: 7px 12px;
    font-size: 0.85rem;
  }

  .sidebar-footer {
    padding: 10px 14px;
    gap: 8px;
  }
}