:root {
  /* ZorinOS-inspired color palette - Dark Mode */
  --primary-color: #6BA4FF;
  --primary-hover: #4D8BFF;
  --secondary-color: #6c757d;
  --success-color: #5CEACA;
  --success-hover: #3ED0B0; 
  --danger-color: #FF5E7A;
  --warning-color: #FFBD59;
  --info-color: #5e72e4;
  --dark-bg-color: #1a1d26;
  --darker-bg-color: #141821;
  --card-bg-color: rgba(30, 33, 45, 0.8);
  --text-color: #e6e9f0;
  --text-muted: #999eaf;
  --border-color: rgba(255, 255, 255, 0.1);
  --input-bg: rgba(30, 33, 45, 0.6);
  --card-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
  --blur-strength: 15px;
  --transition-speed: 0.3s;
}

/* Global styles */
body {
  background: linear-gradient(135deg, var(--darker-bg-color) 0%, var(--dark-bg-color) 100%);
  color: var(--text-color);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  line-height: 1.6;
  min-height: 100vh;
  transition: all var(--transition-speed) ease;
  position: relative;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 30% 10%, rgba(106, 165, 255, 0.08) 0%, transparent 60%),
              radial-gradient(circle at 80% 80%, rgba(92, 234, 202, 0.08) 0%, transparent 60%);
  z-index: -1;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  margin-bottom: 1rem;
}

.display-4 {
  font-weight: 700;
  background: linear-gradient(90deg, var(--primary-color), var(--success-color));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 0.3rem;
}

p {
  color: var(--text-muted);
}

.lead {
  font-size: 1.2rem;
  font-weight: 400;
}

/* Links */
a {
  color: var(--primary-color);
  text-decoration: none;
  transition: all 0.2s ease;
}

a:hover {
  color: var(--primary-hover);
  text-decoration: none;
}

/* Buttons */
.btn {
  border-radius: 12px;
  padding: 0.6rem 1.5rem;
  transition: all 0.3s ease;
  font-weight: 500;
  letter-spacing: 0.02em;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
  color: white;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 7px 14px rgb(255, 255, 255, 0.2);
  background: linear-gradient(135deg, var(--primary-hover), var(--primary-color));
}

.btn-success {
  background: linear-gradient(135deg, var(--success-color), var(--success-hover));
  color: var(--darker-bg-color);
}

.btn-success:hover {
  transform: translateY(-2px);
  box-shadow: 0 7px 14px rgba(0, 0, 0, 0.2);
  background: linear-gradient(135deg, var(--success-hover), var(--success-color));
}

.btn-outline-secondary {
  border: 1px solid var(--text-muted);
  color: var(--text-color);
  background: rgba(108, 117, 125, 0.1);
  backdrop-filter: blur(var(--blur-strength));
  -webkit-backdrop-filter: blur(var(--blur-strength));
}

.btn-outline-secondary:hover {
  background: rgba(108, 117, 125, 0.2);
  color: white;
  transform: translateY(-2px);
}

/* Cards */
.card {
  background: var(--card-bg-color);
  backdrop-filter: blur(var(--blur-strength));
  -webkit-backdrop-filter: blur(var(--blur-strength));
  border: 1px solid var(--border-color);
  border-radius: 16px;
  box-shadow: var(--card-shadow);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  overflow: hidden;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 14px 28px rgba(0, 0, 0, 0.25);
}

.card-body {
  padding: 2rem;
}

.card-title {
  font-size: 1.4rem;
  margin-bottom: 1rem;
  color: var(--text-color);
}

.card-text {
  color: var(--text-muted);
}

/* Pane Styles */
.main-pane {
  background: var(--card-bg-color);
  backdrop-filter: blur(var(--blur-strength));
  -webkit-backdrop-filter: blur(var(--blur-strength));
  border: 1px solid var(--border-color);
  border-radius: 24px;
  box-shadow: var(--card-shadow);
  padding: 3rem;
  margin: 30px 0;
  position: relative;
  overflow: hidden;
}

.main-pane::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at top right, rgba(106, 165, 255, 0.1), transparent 60%);
  z-index: -1;
}

.pane, .side-pane {
  background: var(--card-bg-color);
  backdrop-filter: blur(var(--blur-strength));
  -webkit-backdrop-filter: blur(var(--blur-strength));
  border: 1px solid var(--border-color);
  border-radius: 20px;
  box-shadow: var(--card-shadow);
  padding: 2rem;
  margin: 15px 0;
  transition: all 0.3s ease;
}

/* List group */
.list-group-item {
  background-color: transparent;
  border-color: var(--border-color);
  color: var(--text-muted);
  padding: 1rem 1.25rem;
  position: relative;
}

.list-group-item::before {
  content: '✓';
  color: var(--success-color);
  margin-right: 10px;
  font-weight: bold;
}

.list-group-flush {
  border-radius: 12px;
  overflow: hidden;
}

/* Forms */
.form-control {
  background-color: var(--input-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  color: var(--text-color);
  padding: 0.75rem 1rem;
  transition: all 0.2s ease;
}

.form-control:focus {
  background-color: rgba(40, 44, 60, 0.8);
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(106, 165, 255, 0.25);
  color: white;
}

.form-control::placeholder {
  color: var(--text-muted);
  opacity: 0.7;
}

.form-group {
  margin-bottom: 1.5rem;
}

/* Login/Register Forms */
#login-pane {
  background: var(--card-bg-color);
  backdrop-filter: blur(var(--blur-strength));
  -webkit-backdrop-filter: blur(var(--blur-strength));
  border: 1px solid var(--border-color);
  border-radius: 20px;
  box-shadow: var(--card-shadow);
  padding: 2.5rem;
  position: relative;
  overflow: hidden;
}

#login-pane::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at bottom left, rgba(106, 165, 255, 0.05), transparent 70%);
  z-index: -1;
}

/* File Upload */
#drop-area {
  border: 2px dashed var(--border-color);
  border-radius: 16px;
  padding: 2.5rem;
  text-align: center;
  transition: all 0.3s ease;
  background: rgba(30, 33, 45, 0.3);
  backdrop-filter: blur(var(--blur-strength));
  -webkit-backdrop-filter: blur(var(--blur-strength));
}

#drop-area.dragover {
  border-color: var(--primary-color);
  background: rgba(106, 165, 255, 0.1);
  box-shadow: 0 0 0 3px rgba(106, 165, 255, 0.25);
}

/* Animation */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.container {
  animation: fadeIn 0.5s ease-out;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .main-pane, .pane, .side-pane {
    padding: 1.5rem;
    margin: 15px 0;
  }
  
  .card-body {
    padding: 1.5rem;
  }
}

/* Custom scrollbar */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--darker-bg-color);
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* Navigation bar styling */
.navbar {
  background: rgba(26, 29, 38, 0.85);
  backdrop-filter: blur(var(--blur-strength));
  -webkit-backdrop-filter: blur(var(--blur-strength));
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 1.5rem;
  transition: all var(--transition-speed) ease;
}

.navbar-brand {
  font-weight: 700;
  background: linear-gradient(90deg, var(--primary-color), var(--success-color));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  padding-right: 1rem;
}

.navbar-dark .navbar-nav .nav-link {
  color: var(--text-color);
  position: relative;
  padding: 0.5rem 1rem;
  transition: all 0.3s ease;
}

.navbar-dark .navbar-nav .nav-link:before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-color), var(--success-color));
  transition: all 0.3s ease;
  transform: translateX(-50%);
  opacity: 0;
}

.navbar-dark .navbar-nav .nav-link:hover:before,
.navbar-dark .navbar-nav .nav-link.active:before {
  width: 70%;
  opacity: 1;
}

.navbar-dark .navbar-nav .nav-link:hover,
.navbar-dark .navbar-nav .nav-link.active {
  color: white;
}

/* Table styles */
.table {
  color: var(--text-color);
  border-color: var(--border-color);
}

.table th {
  font-weight: 600;
  border-top: none;
  border-bottom: 2px solid var(--border-color);
  background-color: var(--darker-bg-color);
  color: var(--text-color);
}

.table td {
  border-color: var(--border-color);
  padding: 1rem 0.75rem;
  background-color: var(--dark-bg-color);
  color: var(--text-color);
}

.table-hover tbody tr:hover {
  background-color: rgba(255, 255, 255, 0.05);
}

/* Badges */
.badge {
  padding: 0.5em 0.8em;
  font-weight: 500;
  border-radius: 8px;
}

.badge-primary {
  background-color: var(--primary-color);
  color: white;
}

.badge-success {
  background-color: var(--success-color);
  color: var(--darker-bg-color);
}

.badge-warning {
  background-color: var(--warning-color);
  color: var(--darker-bg-color);
}

.badge-danger {
  background-color: var(--danger-color);
  color: white;
}

/* Alert styles */
.alert {
  border: none;
  border-radius: 14px;
  padding: 1rem 1.5rem;
  backdrop-filter: blur(var(--blur-strength));
  -webkit-backdrop-filter: blur(var(--blur-strength));
}

.alert-primary {
  background-color: rgba(106, 165, 255, 0.15);
  color: var(--primary-color);
  border-left: 4px solid var(--primary-color);
}

.alert-success {
  background-color: rgba(92, 234, 202, 0.15);
  color: var(--success-color);
  border-left: 4px solid var(--success-color);
}

.alert-warning {
  background-color: rgba(255, 189, 89, 0.15);
  color: var(--warning-color);
  border-left: 4px solid var(--warning-color);
}

.alert-danger {
  background-color: rgba(255, 94, 122, 0.15);
  color: var(--danger-color);
  border-left: 4px solid var(--danger-color);
}

/* Pills and tabs */
.nav-pills .nav-link {
  border-radius: 10px;
  padding: 0.75rem 1.5rem;
  color: var(--text-muted);
  transition: all 0.3s ease;
}

.nav-pills .nav-link.active {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
  color: white;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
}

.nav-pills .nav-link:hover:not(.active) {
  background-color: rgba(255, 255, 255, 0.05);
  color: var(--text-color);
}

.nav-tabs {
  border-bottom: 1px solid var(--border-color);
}

.nav-tabs .nav-link {
  border: none;
  color: var(--text-muted);
  position: relative;
  padding: 0.75rem 1.5rem;
  transition: all 0.3s ease;
}

.nav-tabs .nav-link.active {
  background-color: transparent;
  color: var(--primary-color);
  border: none;
}

.nav-tabs .nav-link.active:after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-color), var(--success-color));
}

/* Toggle switches */
.form-switch .form-check-input {
  height: 1.5rem;
  width: 2.75rem;
  border-radius: 2rem;
  background-color: var(--input-bg);
  border-color: var(--border-color);
}

.form-switch .form-check-input:checked {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
}

.form-switch .form-check-input:focus {
  box-shadow: 0 0 0 0.25rem rgba(106, 165, 255, 0.25);
}

/* Progress bars */
.progress {
  height: 0.75rem;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  overflow: hidden;
}

.progress-bar {
  background: linear-gradient(to right, var(--primary-color), var(--success-color));
  transition: width 0.6s ease;
}

/* Tooltips */
.tooltip .tooltip-inner {
  background-color: var(--card-bg-color);
  backdrop-filter: blur(var(--blur-strength));
  -webkit-backdrop-filter: blur(var(--blur-strength));
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.5rem 0.75rem;
  font-size: 0.85rem;
  box-shadow: var(--card-shadow);
  color: var(--text-color);
}

.tooltip.bs-tooltip-top .tooltip-arrow::before {
  border-top-color: var(--card-bg-color);
}

.tooltip.bs-tooltip-bottom .tooltip-arrow::before {
  border-bottom-color: var(--card-bg-color);
}

.tooltip.bs-tooltip-start .tooltip-arrow::before {
  border-left-color: var(--card-bg-color);
}

.tooltip.bs-tooltip-end .tooltip-arrow::before {
  border-right-color: var(--card-bg-color);
}

.modal-content {
  background-color: var(--card-bg-color);
  backdrop-filter: blur(var(--blur-strength));
  -webkit-backdrop-filter: blur(var(--blur-strength));
  border: 1px solid var(--border-color);
  border-radius: 16px;
  box-shadow: var(--card-shadow);
  color: var(--text-color);
  pointer-events: auto;
  outline: 0;
}

.modal-header {
  border-bottom: 1px solid var(--border-color);
  padding: 1.5rem;
}

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

.modal-title {
  font-weight: 600;
}

.modal-backdrop {
  background-color: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(5px);
}

/* Glass effect for focused elements */
.glass-effect:focus {
  box-shadow: 0 0 0 2px var(--primary-color), 0 0 20px rgba(106, 165, 255, 0.25);
  outline: none;
}

textarea {
  background-color: var(--input-bg);
  color: var(--text-color);
}

/* Button glow effect (used by modern-effects.js) */
.btn-glow {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: inherit;
  background: radial-gradient(circle at var(--x, 50%) var(--y, 50%), rgba(255, 255, 255, 0.7) 0%, rgba(255, 255, 255, 0) 70%);
  opacity: 0;
  pointer-events: none;
  animation: glowEffect 0.7s ease-out;
}

@keyframes glowEffect {
  0% { opacity: 0; }
  25% { opacity: 0.5; }
  100% { opacity: 0; }
}

/* Container backgrounds */
.main-container {
  position: relative;
  overflow: hidden;
}

.bg-gradient-1, .bg-gradient-2 {
  position: fixed;
  border-radius: 50%;
  filter: blur(150px);
  opacity: 0.15;
  z-index: -1;
}

.bg-gradient-1 {
  width: 50vw;
  height: 50vw;
  background: radial-gradient(circle, var(--primary-color) 0%, transparent 70%);
  top: -15vh;
  right: -10vw;
}

.bg-gradient-2 {
  width: 40vw;
  height: 40vw;
  background: radial-gradient(circle, var(--success-color) 0%, transparent 70%);
  bottom: -15vh;
  left: -10vw;
}

/* Animation classes */
.animate-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.animate-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Parallax background elements */
.parallax-bg {
  position: absolute;
  transition: transform 0.1s ease-out;
  pointer-events: none;
}