body {
  font-family: system-ui, Segoe UI, Arial;
  background: #f7fafc;
  color: #222;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
  margin: 0;
}

.card {
  max-width: 540px;
  padding: 30px;
  border-radius: 8px;
  background: white;
  box-shadow: 0 6px 18px rgba(12, 12, 30, 0.08);
  text-align: center;
}

.card h1 {
  margin-bottom: 8px;
}

.card p {
  color: #555;
}

.offline-note {
  margin-top: 12px;
  font-size: 0.9em;
  color: #777;
}

/* Premium Card */
.card{
  position:relative;
  overflow:hidden;

  background:rgba(255,255,255,.08);
  backdrop-filter:blur(30px);

  border:1px solid rgba(255,255,255,.15);

  box-shadow:
    0 25px 60px rgba(0,0,0,.4),
    inset 0 1px 0 rgba(255,255,255,.1);
}

/* Animated Border */
.card::before{
  content:"";
  position:absolute;
  inset:0;
  padding:1px;
  border-radius:inherit;

  background:
    linear-gradient(
      135deg,
      rgba(59,130,246,.7),
      rgba(139,92,246,.7),
      rgba(59,130,246,.7)
    );

  -webkit-mask:
    linear-gradient(#fff 0 0) content-box,
    linear-gradient(#fff 0 0);

  -webkit-mask-composite:xor;
  mask-composite:exclude;
}

/* Pulse Signal */
.icon{
  position:relative;
}

.icon::before,
.icon::after{
  content:"";
  position:absolute;
  inset:-12px;
  border-radius:50%;
  border:2px solid rgba(59,130,246,.35);
  animation:ping 2.5s infinite;
}

.icon::after{
  animation-delay:1.2s;
}

@keyframes ping{
  0%{
    transform:scale(.9);
    opacity:1;
  }
  100%{
    transform:scale(1.6);
    opacity:0;
  }
}
/* ============================================================
   THEME STYLING OVERRIDES
   Navbar, Sidebar, and Footer theme colors:
   - Light Mode: White background, dark text/icons
   - Dark Mode: Black background, light/white text/icons
   ============================================================ */

/* ==========================================
   1. LIGHT MODE SPECIFIC (body:not(.dark-mode))
   ========================================== */
body:not(.dark-mode) .navbar,
body:not(.dark-mode) header.navbar,
body:not(.dark-mode) nav.navbar,
body:not(.dark-mode) .sidebar,
body:not(.dark-mode) aside.sidebar,
body:not(.dark-mode) .footer,
body:not(.dark-mode) footer.footer {
  background: #ffffff !important;
  background-color: #ffffff !important;
  color: #0f172a !important;
  border-color: #e2e8f0 !important;
}

/* Ensure text, icons, links inside these components are dark */
body:not(.dark-mode) .navbar *,
body:not(.dark-mode) header.navbar *,
body:not(.dark-mode) nav.navbar *,
body:not(.dark-mode) .sidebar *,
body:not(.dark-mode) aside.sidebar *,
body:not(.dark-mode) .footer *,
body:not(.dark-mode) footer.footer * {
  color: #334155 !important;
}

/* Titles and major headings */
body:not(.dark-mode) .navbar .logo,
body:not(.dark-mode) .sidebar .sidebar-brand,
body:not(.dark-mode) .sidebar h2,
body:not(.dark-mode) .sidebar .brand-text,
body:not(.dark-mode) .footer h2,
body:not(.dark-mode) .footer h3,
body:not(.dark-mode) .footer-logo {
  color: #0f172a !important;
}

/* Sidebar navigation links */
body:not(.dark-mode) .sidebar-nav li a,
body:not(.dark-mode) .sidebar ul li a,
body:not(.dark-mode) .sidebar a {
  background: transparent !important;
  color: #475569 !important;
}

/* Sidebar active link and hover states */
body:not(.dark-mode) .sidebar-nav li.active a,
body:not(.dark-mode) .sidebar-nav li a:hover,
body:not(.dark-mode) .sidebar ul li.active a,
body:not(.dark-mode) .sidebar ul li a:hover,
body:not(.dark-mode) .sidebar a:hover,
body:not(.dark-mode) .sidebar .active a {
  background-color: #f1f5f9 !important;
  color: #0f172a !important;
}

body:not(.dark-mode) .sidebar-nav li.active a *,
body:not(.dark-mode) .sidebar-nav li a:hover *,
body:not(.dark-mode) .sidebar ul li.active a *,
body:not(.dark-mode) .sidebar ul li a:hover *,
body:not(.dark-mode) .sidebar a:hover *,
body:not(.dark-mode) .sidebar .active a * {
  color: #0f172a !important;
}

/* Footer links hover */
body:not(.dark-mode) .footer a:hover,
body:not(.dark-mode) footer.footer a:hover {
  color: #4f46e5 !important; /* Premium brand indigo */
}

/* Search bar inside navbar */
body:not(.dark-mode) .search-bar input {
  background-color: #f8fafc !important;
  color: #0f172a !important;
  border: 1px solid #cbd5e1 !important;
}
body:not(.dark-mode) .search-bar input::placeholder {
  color: #64748b !important;
}

/* Outline and secondary buttons inside light navbar/sidebar */
body:not(.dark-mode) .navbar .nav-btn.outline-nav-btn,
body:not(.dark-mode) .navbar .outline-btn {
  background-color: #ffffff !important;
  color: #0f172a !important;
  border: 1px solid #cbd5e1 !important;
}
body:not(.dark-mode) .navbar .nav-btn.outline-nav-btn:hover,
body:not(.dark-mode) .navbar .outline-btn:hover {
  background-color: #f1f5f9 !important;
}


/* ==========================================
   2. DARK MODE SPECIFIC (body.dark-mode)
   ========================================== */
body.dark-mode .navbar,
body.dark-mode header.navbar,
body.dark-mode nav.navbar,
body.dark-mode .sidebar,
body.dark-mode aside.sidebar,
body.dark-mode .footer,
body.dark-mode footer.footer {
  background: #000000 !important;
  background-color: #000000 !important;
  color: #f8fafc !important;
  border-color: #1e293b !important;
  box-shadow: none !important;
}

/* Ensure text, icons, links inside these components are light */
body.dark-mode .navbar *,
body.dark-mode header.navbar *,
body.dark-mode nav.navbar *,
body.dark-mode .sidebar *,
body.dark-mode aside.sidebar *,
body.dark-mode .footer *,
body.dark-mode footer.footer * {
  color: #cbd5e1 !important; /* slate-300 */
}

/* Titles and major headings */
body.dark-mode .navbar .logo,
body.dark-mode .sidebar .sidebar-brand,
body.dark-mode .sidebar h2,
body.dark-mode .sidebar .brand-text,
body.dark-mode .footer h2,
body.dark-mode .footer h3,
body.dark-mode .footer-logo {
  color: #ffffff !important;
}

/* Sidebar navigation links */
body.dark-mode .sidebar-nav li a,
body.dark-mode .sidebar ul li a,
body.dark-mode .sidebar a {
  background: transparent !important;
  color: #94a3b8 !important;
}

/* Sidebar active link and hover states */
body.dark-mode .sidebar-nav li.active a,
body.dark-mode .sidebar-nav li a:hover,
body.dark-mode .sidebar ul li.active a,
body.dark-mode .sidebar ul li a:hover,
body.dark-mode .sidebar a:hover,
body.dark-mode .sidebar .active a {
  background-color: #1e293b !important; /* slate-800 */
  color: #ffffff !important;
}

body.dark-mode .sidebar-nav li.active a *,
body.dark-mode .sidebar-nav li a:hover *,
body.dark-mode .sidebar ul li.active a *,
body.dark-mode .sidebar ul li a:hover *,
body.dark-mode .sidebar a:hover *,
body.dark-mode .sidebar .active a * {
  color: #ffffff !important;
}

/* Footer links hover */
body.dark-mode .footer a:hover,
body.dark-mode footer.footer a:hover {
  color: #818cf8 !important; /* Indigo-400 */
}

/* Search bar inside navbar */
body.dark-mode .search-bar input {
  background-color: #0f172a !important;
  color: #ffffff !important;
  border: 1px solid #1e293b !important;
}
body.dark-mode .search-bar input::placeholder {
  color: #475569 !important;
}

/* Secondary/outline buttons in dark navbar */
body.dark-mode .navbar .nav-btn.outline-nav-btn,
body.dark-mode .navbar .outline-btn {
  background-color: #000000 !important;
  color: #ffffff !important;
  border: 1px solid #334155 !important;
}
body.dark-mode .navbar .nav-btn.outline-nav-btn:hover,
body.dark-mode .navbar .outline-btn:hover {
  background-color: #0f172a !important;
}


/* ==========================================
   3. THEME TOGGLE BUTTON STYLING (GLOBAL)
   ========================================== */
.theme-toggle,
#darkModeToggle,
#theme-toggle {
  background: none !important;
  border: none !important;
  cursor: pointer !important;
  font-size: 1.15rem !important;
  padding: 8px 12px !important;
  border-radius: 9999px !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  transition: all 0.2s ease !important;
}

body:not(.dark-mode) .theme-toggle,
body:not(.dark-mode) #darkModeToggle,
body:not(.dark-mode) #theme-toggle {
  color: #475569 !important;
  background-color: #f1f5f9 !important;
}
body:not(.dark-mode) .theme-toggle:hover,
body:not(.dark-mode) #darkModeToggle:hover,
body:not(.dark-mode) #theme-toggle:hover {
  color: #0f172a !important;
  background-color: #e2e8f0 !important;
  transform: scale(1.05);
}

body.dark-mode .theme-toggle,
body.dark-mode #darkModeToggle,
body.dark-mode #theme-toggle {
  color: #e2e8f0 !important;
  background-color: #1e293b !important;
}
body.dark-mode .theme-toggle:hover,
body.dark-mode #darkModeToggle:hover,
body.dark-mode #theme-toggle:hover {
  color: #ffffff !important;
  background-color: #334155 !important;
  transform: scale(1.05);
}

/* Floating theme toggle button (for pages without navbar/sidebar) */
.theme-toggle-floating {
  position: fixed !important;
  top: 20px !important;
  right: 20px !important;
  z-index: 9999 !important;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1) !important;
}
body.dark-mode .theme-toggle-floating {
  box-shadow: 0 4px 12px rgba(0,0,0,0.5) !important;
}

/* Sidebar list item toggle button */
.sidebar .theme-toggle-sidebar {
  display: flex !important;
  align-items: center !important;
  gap: 10px !important;
  padding: 10px 16px !important;
  width: calc(100% - 32px) !important;
  margin: 10px 16px !important;
  border-radius: 8px !important;
  font-size: 0.9rem !important;
  font-weight: 500 !important;
  border: none !important;
  background-color: transparent !important;
}
body:not(.dark-mode) .sidebar .theme-toggle-sidebar {
  color: #475569 !important;
  background-color: #f1f5f9 !important;
}
body:not(.dark-mode) .sidebar .theme-toggle-sidebar:hover {
  color: #0f172a !important;
  background-color: #e2e8f0 !important;
}
body.dark-mode .sidebar .theme-toggle-sidebar {
  color: #cbd5e1 !important;
  background-color: #1e293b !important;
}
body.dark-mode .sidebar .theme-toggle-sidebar:hover {
  color: #ffffff !important;
  background-color: #334155 !important;
}
/* ============================================================
   THEME STYLING OVERRIDES
   Navbar, Sidebar, and Footer theme colors:
   - Light Mode: White background, dark text/icons
   - Dark Mode: Black background, light/white text/icons
   ============================================================ */

/* ==========================================
   1. LIGHT MODE SPECIFIC (body:not(.dark-mode))
   ========================================== */
body:not(.dark-mode) .navbar,
body:not(.dark-mode) header.navbar,
body:not(.dark-mode) nav.navbar,
body:not(.dark-mode) .sidebar,
body:not(.dark-mode) aside.sidebar,
body:not(.dark-mode) .footer,
body:not(.dark-mode) footer.footer {
  background: #ffffff !important;
  background-color: #ffffff !important;
  color: #0f172a !important;
  border-color: #e2e8f0 !important;
}

/* Ensure text, icons, links inside these components are dark */
body:not(.dark-mode) .navbar *,
body:not(.dark-mode) header.navbar *,
body:not(.dark-mode) nav.navbar *,
body:not(.dark-mode) .sidebar *,
body:not(.dark-mode) aside.sidebar *,
body:not(.dark-mode) .footer *,
body:not(.dark-mode) footer.footer * {
  color: #334155 !important;
}

/* Titles and major headings */
body:not(.dark-mode) .navbar .logo,
body:not(.dark-mode) .sidebar .sidebar-brand,
body:not(.dark-mode) .sidebar h2,
body:not(.dark-mode) .sidebar .brand-text,
body:not(.dark-mode) .footer h2,
body:not(.dark-mode) .footer h3,
body:not(.dark-mode) .footer-logo {
  color: #0f172a !important;
}

/* Sidebar navigation links */
body:not(.dark-mode) .sidebar-nav li a,
body:not(.dark-mode) .sidebar ul li a,
body:not(.dark-mode) .sidebar a {
  background: transparent !important;
  color: #475569 !important;
}

/* Sidebar active link and hover states */
body:not(.dark-mode) .sidebar-nav li.active a,
body:not(.dark-mode) .sidebar-nav li a:hover,
body:not(.dark-mode) .sidebar ul li.active a,
body:not(.dark-mode) .sidebar ul li a:hover,
body:not(.dark-mode) .sidebar a:hover,
body:not(.dark-mode) .sidebar .active a {
  background-color: #f1f5f9 !important;
  color: #0f172a !important;
}

body:not(.dark-mode) .sidebar-nav li.active a *,
body:not(.dark-mode) .sidebar-nav li a:hover *,
body:not(.dark-mode) .sidebar ul li.active a *,
body:not(.dark-mode) .sidebar ul li a:hover *,
body:not(.dark-mode) .sidebar a:hover *,
body:not(.dark-mode) .sidebar .active a * {
  color: #0f172a !important;
}

/* Footer links hover */
body:not(.dark-mode) .footer a:hover,
body:not(.dark-mode) footer.footer a:hover {
  color: #4f46e5 !important; /* Premium brand indigo */
}

/* Search bar inside navbar */
body:not(.dark-mode) .search-bar input {
  background-color: #f8fafc !important;
  color: #0f172a !important;
  border: 1px solid #cbd5e1 !important;
}
body:not(.dark-mode) .search-bar input::placeholder {
  color: #64748b !important;
}

/* Outline and secondary buttons inside light navbar/sidebar */
body:not(.dark-mode) .navbar .nav-btn.outline-nav-btn,
body:not(.dark-mode) .navbar .outline-btn {
  background-color: #ffffff !important;
  color: #0f172a !important;
  border: 1px solid #cbd5e1 !important;
}
body:not(.dark-mode) .navbar .nav-btn.outline-nav-btn:hover,
body:not(.dark-mode) .navbar .outline-btn:hover {
  background-color: #f1f5f9 !important;
}


/* ==========================================
   2. DARK MODE SPECIFIC (body.dark-mode)
   ========================================== */
body.dark-mode .navbar,
body.dark-mode header.navbar,
body.dark-mode nav.navbar,
body.dark-mode .sidebar,
body.dark-mode aside.sidebar,
body.dark-mode .footer,
body.dark-mode footer.footer {
  background: #000000 !important;
  background-color: #000000 !important;
  color: #f8fafc !important;
  border-color: #1e293b !important;
  box-shadow: none !important;
}

/* Ensure text, icons, links inside these components are light */
body.dark-mode .navbar *,
body.dark-mode header.navbar *,
body.dark-mode nav.navbar *,
body.dark-mode .sidebar *,
body.dark-mode aside.sidebar *,
body.dark-mode .footer *,
body.dark-mode footer.footer * {
  color: #cbd5e1 !important; /* slate-300 */
}

/* Titles and major headings */
body.dark-mode .navbar .logo,
body.dark-mode .sidebar .sidebar-brand,
body.dark-mode .sidebar h2,
body.dark-mode .sidebar .brand-text,
body.dark-mode .footer h2,
body.dark-mode .footer h3,
body.dark-mode .footer-logo {
  color: #ffffff !important;
}

/* Sidebar navigation links */
body.dark-mode .sidebar-nav li a,
body.dark-mode .sidebar ul li a,
body.dark-mode .sidebar a {
  background: transparent !important;
  color: #94a3b8 !important;
}

/* Sidebar active link and hover states */
body.dark-mode .sidebar-nav li.active a,
body.dark-mode .sidebar-nav li a:hover,
body.dark-mode .sidebar ul li.active a,
body.dark-mode .sidebar ul li a:hover,
body.dark-mode .sidebar a:hover,
body.dark-mode .sidebar .active a {
  background-color: #1e293b !important; /* slate-800 */
  color: #ffffff !important;
}

body.dark-mode .sidebar-nav li.active a *,
body.dark-mode .sidebar-nav li a:hover *,
body.dark-mode .sidebar ul li.active a *,
body.dark-mode .sidebar ul li a:hover *,
body.dark-mode .sidebar a:hover *,
body.dark-mode .sidebar .active a * {
  color: #ffffff !important;
}

/* Footer links hover */
body.dark-mode .footer a:hover,
body.dark-mode footer.footer a:hover {
  color: #818cf8 !important; /* Indigo-400 */
}

/* Search bar inside navbar */
body.dark-mode .search-bar input {
  background-color: #0f172a !important;
  color: #ffffff !important;
  border: 1px solid #1e293b !important;
}
body.dark-mode .search-bar input::placeholder {
  color: #475569 !important;
}

/* Secondary/outline buttons in dark navbar */
body.dark-mode .navbar .nav-btn.outline-nav-btn,
body.dark-mode .navbar .outline-btn {
  background-color: #000000 !important;
  color: #ffffff !important;
  border: 1px solid #334155 !important;
}
body.dark-mode .navbar .nav-btn.outline-nav-btn:hover,
body.dark-mode .navbar .outline-btn:hover {
  background-color: #0f172a !important;
}


/* ==========================================
   3. THEME TOGGLE BUTTON STYLING (GLOBAL)
   ========================================== */
.theme-toggle,
#darkModeToggle,
#theme-toggle {
  background: none !important;
  border: none !important;
  cursor: pointer !important;
  font-size: 1.15rem !important;
  padding: 8px 12px !important;
  border-radius: 9999px !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  transition: all 0.2s ease !important;
}

body:not(.dark-mode) .theme-toggle,
body:not(.dark-mode) #darkModeToggle,
body:not(.dark-mode) #theme-toggle {
  color: #475569 !important;
  background-color: #f1f5f9 !important;
}
body:not(.dark-mode) .theme-toggle:hover,
body:not(.dark-mode) #darkModeToggle:hover,
body:not(.dark-mode) #theme-toggle:hover {
  color: #0f172a !important;
  background-color: #e2e8f0 !important;
  transform: scale(1.05);
}

body.dark-mode .theme-toggle,
body.dark-mode #darkModeToggle,
body.dark-mode #theme-toggle {
  color: #e2e8f0 !important;
  background-color: #1e293b !important;
}
body.dark-mode .theme-toggle:hover,
body.dark-mode #darkModeToggle:hover,
body.dark-mode #theme-toggle:hover {
  color: #ffffff !important;
  background-color: #334155 !important;
  transform: scale(1.05);
}

/* Floating theme toggle button (for pages without navbar/sidebar) */
.theme-toggle-floating {
  position: fixed !important;
  top: 20px !important;
  right: 20px !important;
  z-index: 9999 !important;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1) !important;
}
body.dark-mode .theme-toggle-floating {
  box-shadow: 0 4px 12px rgba(0,0,0,0.5) !important;
}

/* Sidebar list item toggle button */
.sidebar .theme-toggle-sidebar {
  display: flex !important;
  align-items: center !important;
  gap: 10px !important;
  padding: 10px 16px !important;
  width: calc(100% - 32px) !important;
  margin: 10px 16px !important;
  border-radius: 8px !important;
  font-size: 0.9rem !important;
  font-weight: 500 !important;
  border: none !important;
  background-color: transparent !important;
}
body:not(.dark-mode) .sidebar .theme-toggle-sidebar {
  color: #475569 !important;
  background-color: #f1f5f9 !important;
}
body:not(.dark-mode) .sidebar .theme-toggle-sidebar:hover {
  color: #0f172a !important;
  background-color: #e2e8f0 !important;
}
body.dark-mode .sidebar .theme-toggle-sidebar {
  color: #cbd5e1 !important;
  background-color: #1e293b !important;
}
body.dark-mode .sidebar .theme-toggle-sidebar:hover {
  color: #ffffff !important;
  background-color: #334155 !important;
}