:root {
    /* Primary: Deep Indigo to Violet Mixing */
    --primary: #4f46e5;
    --primary-light: #818cf8;
    --primary-dark: #3730a3;
    
    /* Accent: Electric Cyan for Contrast */
    --accent: #06b6d4;
    --accent-light: #22d3ee;
    
    /* Enhanced Light Mode Colors - Better Visibility */
    --bg: #ffffff;
    --glass: rgba(255, 255, 255, 0.95);
    --glass-border: rgba(0, 0, 0, 0.08);
    --text: #1e293b;
    --text-muted: #475569;
    --text-secondary: #64748b;
    --border: #e2e8f0;
    --shadow: 0 10px 40px -10px rgba(79, 70, 229, 0.15);
    --hover-bg: rgba(79, 70, 229, 0.08);
}

[data-theme="dark"] {
    /* Perfect Dark Mode Colors - High Contrast & Readable */
    --bg: #0a0e1a !important;
    --glass: rgba(15, 23, 42, 0.95) !important;
    --glass-border: rgba(255, 255, 255, 0.08) !important;
    --text: #f1f5f9 !important;
    --text-muted: #94a3b8 !important;
    --text-secondary: #64748b !important;
    --border: #1e293b !important;
    --shadow: 0 20px 40px -15px rgba(56, 189, 248, 0.15) !important;
    --hover-bg: rgba(56, 189, 248, 0.1) !important;
    
    /* Enhanced Primary Colors for Dark Mode */
    --primary: #38bdf8 !important;
    --primary-light: #7dd3fc !important;
    --primary-dark: #0284c7 !important;
    --accent: #22d3ee !important;
    --accent-light: #67e8f9 !important;
}

body {
    background-color: var(--bg);
    color: var(--text);
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
    margin: 0;
    padding: 0;
    position: relative;
    /* Enhanced background gradients for both themes */
    background-image: 
        radial-gradient(at 0% 0%, rgba(79, 70, 229, 0.03) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(6, 182, 212, 0.03) 0px, transparent 50%);
}

[data-theme="dark"] body {
    background-image: 
        radial-gradient(at 0% 0%, rgba(56, 189, 248, 0.04) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(34, 211, 238, 0.04) 0px, transparent 50%);
}

/* Theme Transitions */
* {
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

/* Additional Dark Theme Fixes */
[data-theme="dark"] .text-white {
    color: var(--text) !important;
}

[data-theme="dark"] .text-light {
    color: var(--text-muted) !important;
}

[data-theme="dark"] .bg-white {
    background-color: var(--glass) !important;
    color: var(--text) !important;
}

[data-theme="dark"] .bg-light {
    background-color: var(--glass) !important;
    color: var(--text) !important;
}

[data-theme="dark"] .border-white {
    border-color: var(--glass-border) !important;
}

[data-theme="dark"] .border-light {
    border-color: var(--glass-border) !important;
}

/* Fix for visitor counter in dark theme */
[data-theme="dark"] #visitor-count {
    color: var(--text) !important;
}

/* Fix for footer links in dark theme */
[data-theme="dark"] footer a {
    color: var(--accent) !important;
}

[data-theme="dark"] footer a:hover {
    color: var(--primary-light) !important;
}

/* Fix for icons in dark theme */
[data-theme="dark"] [data-lucide] {
    color: var(--text) !important;
}

/* Fix for input placeholders in dark theme */
[data-theme="dark"] input::placeholder {
    color: var(--text-muted) !important;
}

[data-theme="dark"] textarea::placeholder {
    color: var(--text-muted) !important;
}

[data-theme="dark"] select::placeholder {
    color: var(--text-muted) !important;
}

/* Fix for focus states in dark theme */
[data-theme="dark"] input:focus {
    border-color: var(--primary) !important;
    box-shadow: 0 0 0 0.2rem rgba(56, 189, 248, 0.25) !important;
}

[data-theme="dark"] select:focus {
    border-color: var(--primary) !important;
    box-shadow: 0 0 0 0.2rem rgba(56, 189, 248, 0.25) !important;
}

[data-theme="dark"] textarea:focus {
    border-color: var(--primary) !important;
    box-shadow: 0 0 0 0.2rem rgba(56, 189, 248, 0.25) !important;
}

/* Fix for disabled elements in dark theme */
[data-theme="dark"] input:disabled {
    background-color: var(--glass-border) !important;
    color: var(--text-muted) !important;
}

[data-theme="dark"] select:disabled {
    background-color: var(--glass-border) !important;
    color: var(--text-muted) !important;
}

[data-theme="dark"] button:disabled {
    background-color: var(--glass-border) !important;
    color: var(--text-muted) !important;
}

/* Fix for internal predictor in dark theme */
[data-theme="dark"] #internal-result {
    background: var(--glass) !important;
    color: var(--text) !important;
    border: 1px solid var(--glass-border) !important;
}

/* Fix for grade predictor in dark theme */
[data-theme="dark"] #grade-predictor {
    background: var(--glass) !important;
    border-color: var(--glass-border) !important;
}

[data-theme="dark"] #grade-predictor th {
    background: var(--glass) !important;
    color: var(--text) !important;
    border-color: var(--glass-border) !important;
}

[data-theme="dark"] #grade-predictor td {
    background: var(--glass) !important;
    color: var(--text) !important;
    border-color: var(--glass-border) !important;
}

/* Fix for SGPA/CGPA results in dark theme */
[data-theme="dark"] #sgpa-result {
    color: var(--text) !important;
}

[data-theme="dark"] #cgpa-result-val {
    color: var(--text) !important;
}

[data-theme="dark"] #cgpa-class {
    color: var(--text-muted) !important;
}

/* Fix for navigation tabs in dark theme */
[data-theme="dark"] .nav-pills .nav-link {
    background: var(--glass) !important;
    border: 1px solid var(--glass-border) !important;
    color: var(--text) !important;
}

[data-theme="dark"] .nav-pills .nav-link:hover {
    background: var(--hover-bg) !important;
    color: var(--primary-light) !important;
}

/* Fix for study planner in dark theme */
[data-theme="dark"] .study-session {
    background: var(--glass) !important;
    border-color: var(--glass-border) !important;
    color: var(--text) !important;
}

[data-theme="dark"] .break-session {
    background: var(--glass) !important;
    border-color: var(--glass-border) !important;
    color: var(--text-muted) !important;
}

/* Fix for modals in dark theme */
[data-theme="dark"] .modal-content {
    background: var(--glass) !important;
    border: 1px solid var(--glass-border) !important;
    color: var(--text) !important;
}

[data-theme="dark"] .modal-header {
    background: var(--glass) !important;
    border-bottom: 1px solid var(--glass-border) !important;
    color: var(--text) !important;
}

[data-theme="dark"] .modal-footer {
    background: var(--glass) !important;
    border-top: 1px solid var(--glass-border) !important;
    color: var(--text) !important;
}

/* Fix for forms in dark theme */
[data-theme="dark"] .form-label {
    color: var(--text) !important;
}

[data-theme="dark"] .form-text {
    color: var(--text-muted) !important;
}

/* Fix for alerts in dark theme */
[data-theme="dark"] .alert {
    background: var(--glass) !important;
    border-color: var(--glass-border) !important;
    color: var(--text) !important;
}

/* Fix for tables in dark theme */
[data-theme="dark"] .table {
    background: var(--glass) !important;
    color: var(--text) !important;
}

[data-theme="dark"] .table th {
    background: var(--glass) !important;
    color: var(--text) !important;
    border-color: var(--glass-border) !important;
}

[data-theme="dark"] .table td {
    background: var(--glass) !important;
    color: var(--text) !important;
    border-color: var(--glass-border) !important;
}

/* Fix for badges in dark theme */
[data-theme="dark"] .badge {
    background: var(--glass) !important;
    color: var(--text) !important;
    border: 1px solid var(--glass-border) !important;
}

/* Fix for progress bars in dark theme */
[data-theme="dark"] .progress {
    background: var(--glass-border) !important;
}

[data-theme="dark"] .progress-bar {
    background-color: var(--primary);
}

/* Fix for tooltips in dark theme */
[data-theme="dark"] .tooltip {
    background: var(--glass) !important;
    color: var(--text) !important;
    border: 1px solid var(--glass-border) !important;
}

/* Fix for dropdowns in dark theme */
[data-theme="dark"] .dropdown-menu {
    background: var(--glass) !important;
    border: 1px solid var(--glass-border) !important;
    color: var(--text) !important;
}

[data-theme="dark"] .dropdown-item {
    color: var(--text) !important;
}

[data-theme="dark"] .dropdown-item:hover {
    background: var(--hover-bg) !important;
    color: var(--primary) !important;
}

[data-theme="dark"] h1,
[data-theme="dark"] h2,
[data-theme="dark"] h3,
[data-theme="dark"] h4,
[data-theme="dark"] h5,
[data-theme="dark"] h6 {
    color: var(--text) !important;
}

[data-theme="dark"] .glass-card {
    background: var(--glass) !important;
    border-color: var(--glass-border) !important;
    color: var(--text) !important;
}

[data-theme="dark"] .text-muted {
    color: var(--text-muted) !important;
}

[data-theme="dark"] .btn {
    background-color: var(--glass) !important;
    border-color: var(--glass-border) !important;
    color: var(--text) !important;
}

[data-theme="dark"] .btn-primary {
    background-color: var(--primary) !important;
    border-color: var(--primary) !important;
    color: white !important;
}

[data-theme="dark"] .btn-light {
    background-color: var(--glass) !important;
    border-color: var(--glass-border) !important;
    color: var(--text) !important;
}

[data-theme="dark"] .form-control,
[data-theme="dark"] .form-select {
    background-color: var(--glass) !important;
    border-color: var(--glass-border) !important;
    color: var(--text) !important;
}

[data-theme="dark"] .modal-content {
    background-color: var(--glass) !important;
    border-color: var(--glass-border) !important;
    color: var(--text) !important;
}

[data-theme="dark"] .modal-header,
[data-theme="dark"] .modal-footer {
    background-color: var(--glass) !important;
    border-color: var(--glass-border) !important;
}

[data-theme="dark"] .navbar {
    background: var(--glass) !important;
    border-bottom-color: var(--glass-border) !important;
}

[data-theme="dark"] .navbar-brand span {
    background: linear-gradient(135deg, var(--text), var(--text-muted));
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

[data-theme="dark"] .nav-link {
    color: var(--text) !important;
}

[data-theme="dark"] .nav-link.active {
    color: var(--primary) !important;
}

[data-theme="dark"] .nav-link:hover {
    color: var(--primary-light) !important;
}

/* Comprehensive Dark Theme Fixes for All Elements */
[data-theme="dark"] .alert {
    background: var(--glass) !important;
    border-color: var(--glass-border) !important;
    color: var(--text) !important;
}

[data-theme="dark"] .alert-success {
    background: rgba(16, 185, 129, 0.15) !important;
    color: #10b981 !important;
    border: 1px solid rgba(16, 185, 129, 0.3) !important;
}

[data-theme="dark"] .alert-info {
    background: rgba(59, 130, 246, 0.15) !important;
    color: #3b82f6 !important;
    border: 1px solid rgba(59, 130, 246, 0.3) !important;
}

[data-theme="dark"] .alert-warning {
    background: rgba(245, 158, 11, 0.15) !important;
    color: #f59e0b !important;
    border: 1px solid rgba(245, 158, 11, 0.3) !important;
}

[data-theme="dark"] .alert-danger {
    background: rgba(239, 68, 68, 0.15) !important;
    color: #ef4444 !important;
    border: 1px solid rgba(239, 68, 68, 0.3) !important;
}

[data-theme="dark"] .status-completed {
    border-left-color: #10b981 !important;
    background: linear-gradient(90deg, rgba(16, 185, 129, 0.15), transparent) !important;
}

[data-theme="dark"] .status-in-progress {
    border-left-color: #3b82f6 !important;
    background: linear-gradient(90deg, rgba(59, 130, 246, 0.15), transparent) !important;
}

[data-theme="dark"] .status-pending {
    border-left-color: #94a3b8 !important;
    background: linear-gradient(90deg, rgba(148, 163, 184, 0.15), transparent) !important;
}

[data-theme="dark"] .time-indicator.normal {
    background: rgba(59, 130, 246, 0.15);
    border-color: rgba(59, 130, 246, 0.3);
    color: #3b82f6;
}

[data-theme="dark"] .time-indicator.warning {
    background: rgba(245, 158, 11, 0.15);
    border-color: rgba(245, 158, 11, 0.3);
    color: #f59e0b;
}

[data-theme="dark"] .time-indicator.danger {
    background: rgba(239, 68, 68, 0.15);
    border-color: rgba(239, 68, 68, 0.3);
    color: #ef4444;
}

[data-theme="dark"] .priority-high {
    background: linear-gradient(135deg, #ef4444, #dc2626) !important;
    color: white !important;
}

[data-theme="dark"] .priority-medium {
    background: linear-gradient(135deg, #f59e0b, #d97706) !important;
    color: white !important;
}

[data-theme="dark"] .priority-low {
    background: linear-gradient(135deg, #10b981, #059669) !important;
    color: white !important;
}

[data-theme="dark"] .chapter-badge {
    background: var(--glass) !important;
    border: 1px solid var(--glass-border) !important;
    color: var(--text) !important;
}

[data-theme="dark"] .subject-icon {
    background: var(--primary) !important;
    color: white !important;
}

[data-theme="dark"] .progress {
    background-color: var(--glass-border) !important;
}

[data-theme="dark"] .progress-bar {
    background: var(--primary) !important;
}

[data-theme="dark"] .table {
    background: var(--glass) !important;
    color: var(--text) !important;
}

[data-theme="dark"] .table th {
    background: var(--glass) !important;
    color: var(--text) !important;
    border-color: var(--glass-border) !important;
}

[data-theme="dark"] .table td {
    background: var(--glass) !important;
    color: var(--text) !important;
    border-color: var(--glass-border) !important;
}

[data-theme="dark"] .card {
    background: var(--glass) !important;
    border-color: var(--glass-border) !important;
    color: var(--text) !important;
}

[data-theme="dark"] .card-header {
    background: var(--glass) !important;
    border-color: var(--glass-border) !important;
    color: var(--text) !important;
}

[data-theme="dark"] .card-body {
    background: var(--glass) !important;
    color: var(--text) !important;
}

[data-theme="dark"] .dropdown-menu {
    background: var(--glass) !important;
    border-color: var(--glass-border) !important;
    color: var(--text) !important;
}

[data-theme="dark"] .dropdown-item {
    background: transparent !important;
    color: var(--text) !important;
}

[data-theme="dark"] .dropdown-item:hover {
    background: var(--hover-bg) !important;
    color: var(--primary) !important;
}

[data-theme="dark"] .tooltip {
    background: var(--glass) !important;
    color: var(--text) !important;
    border-color: var(--glass-border) !important;
}

[data-theme="dark"] .popover {
    background: var(--glass) !important;
    color: var(--text) !important;
    border-color: var(--glass-border) !important;
}

[data-theme="dark"] .popover-header {
    background: var(--glass) !important;
    color: var(--text) !important;
    border-color: var(--glass-border) !important;
}

[data-theme="dark"] .popover-body {
    background: var(--glass) !important;
    color: var(--text) !important;
}

[data-theme="dark"] .badge {
    background: var(--glass) !important;
    color: var(--text) !important;
    border: 1px solid var(--glass-border) !important;
}

[data-theme="dark"] .badge.bg-primary {
    background: var(--primary) !important;
    color: white !important;
    border: none !important;
}

[data-theme="dark"] .badge.bg-success {
    background: #10b981 !important;
    color: white !important;
    border: none !important;
}

[data-theme="dark"] .badge.bg-warning {
    background: #f59e0b !important;
    color: white !important;
    border: none !important;
}

[data-theme="dark"] .badge.bg-danger {
    background: #ef4444 !important;
    color: white !important;
    border: none !important;
}

[data-theme="dark"] .badge.bg-info {
    background: #3b82f6 !important;
    color: white !important;
    border: none !important;
}

[data-theme="dark"] .list-group {
    background: var(--glass) !important;
    border-color: var(--glass-border) !important;
}

[data-theme="dark"] .list-group-item {
    background: var(--glass) !important;
    border-color: var(--glass-border) !important;
    color: var(--text) !important;
}

[data-theme="dark"] .list-group-item:hover {
    background: var(--hover-bg) !important;
    color: var(--primary) !important;
}

[data-theme="dark"] .accordion {
    background: var(--glass) !important;
    border-color: var(--glass-border) !important;
}

[data-theme="dark"] .accordion-item {
    background: var(--glass) !important;
    border-color: var(--glass-border) !important;
}

[data-theme="dark"] .accordion-header {
    background: var(--glass) !important;
    color: var(--text) !important;
}

[data-theme="dark"] .accordion-body {
    background: var(--glass) !important;
    color: var(--text) !important;
}

[data-theme="dark"] .accordion-button {
    background: var(--glass) !important;
    color: var(--text) !important;
    border-color: var(--glass-border) !important;
}

[data-theme="dark"] .accordion-button:not(.collapsed) {
    background: var(--hover-bg) !important;
    color: var(--primary) !important;
}

[data-theme="dark"] .nav-tabs {
    background: var(--glass) !important;
    border-color: var(--glass-border) !important;
}

[data-theme="dark"] .nav-tabs .nav-link {
    background: var(--glass) !important;
    border-color: var(--glass-border) !important;
    color: var(--text) !important;
}

[data-theme="dark"] .nav-tabs .nav-link:hover {
    background: var(--hover-bg) !important;
    color: var(--primary) !important;
}

[data-theme="dark"] .nav-tabs .nav-link.active {
    background: var(--glass) !important;
    color: var(--primary) !important;
    border-color: var(--primary) !important;
}

[data-theme="dark"] .nav-pills .nav-link {
    background: var(--glass) !important;
    border-color: var(--glass-border) !important;
    color: var(--text) !important;
}

[data-theme="dark"] .nav-pills .nav-link:hover {
    background: var(--hover-bg) !important;
    color: var(--primary) !important;
}

[data-theme="dark"] .nav-pills .nav-link.active {
    background: var(--primary) !important;
    color: white !important;
    border-color: var(--primary) !important;
}

[data-theme="dark"] .breadcrumb {
    background: var(--glass) !important;
    border-color: var(--glass-border) !important;
}

[data-theme="dark"] .breadcrumb-item {
    color: var(--text-muted) !important;
}

[data-theme="dark"] .breadcrumb-item.active {
    color: var(--text) !important;
}

[data-theme="dark"] .breadcrumb-item a {
    color: var(--primary) !important;
}

[data-theme="dark"] .breadcrumb-item a:hover {
    color: var(--primary-light) !important;
}

[data-theme="dark"] .pagination {
    background: var(--glass) !important;
    border-color: var(--glass-border) !important;
}

[data-theme="dark"] .page-link {
    background: var(--glass) !important;
    border-color: var(--glass-border) !important;
    color: var(--text) !important;
}

[data-theme="dark"] .page-link:hover {
    background: var(--hover-bg) !important;
    color: var(--primary) !important;
}

[data-theme="dark"] .page-item.active .page-link {
    background: var(--primary) !important;
    color: white !important;
    border-color: var(--primary) !important;
}

[data-theme="dark"] .spinner-border {
    border-color: var(--primary) !important;
    border-right-color: transparent !important;
}

[data-theme="dark"] .spinner-grow {
    background: var(--primary) !important;
}

[data-theme="dark"] .close {
    color: var(--text) !important;
}

[data-theme="dark"] .close:hover {
    color: var(--primary) !important;
}

[data-theme="dark"] .form-check-input {
    background: var(--glass) !important;
    border-color: var(--glass-border) !important;
}

[data-theme="dark"] .form-check-input:checked {
    background: var(--primary) !important;
    border-color: var(--primary) !important;
}

[data-theme="dark"] .form-check-label {
    color: var(--text) !important;
}

[data-theme="dark"] .form-range {
    background: var(--glass) !important;
}

[data-theme="dark"] .form-range::-webkit-slider-track {
    background: var(--glass-border) !important;
}

[data-theme="dark"] .form-range::-webkit-slider-thumb {
    background: var(--primary) !important;
    border-color: var(--primary) !important;
}

[data-theme="dark"] .form-range::-moz-range-track {
    background: var(--glass-border) !important;
}

[data-theme="dark"] .form-range::-moz-range-thumb {
    background: var(--primary) !important;
    border-color: var(--primary) !important;
}

[data-theme="dark"] .form-switch .form-check-input {
    background: var(--glass) !important;
    border-color: var(--glass-border) !important;
}

[data-theme="dark"] .form-switch .form-check-input:checked {
    background: var(--primary) !important;
    border-color: var(--primary) !important;
}

[data-theme="dark"] .input-group-text {
    background: var(--glass) !important;
    border-color: var(--glass-border) !important;
    color: var(--text) !important;
}

[data-theme="dark"] .input-group .form-control {
    background: var(--glass) !important;
    border-color: var(--glass-border) !important;
    color: var(--text) !important;
}

[data-theme="dark"] .input-group .form-control:focus {
    background: var(--glass) !important;
    border-color: var(--primary) !important;
    color: var(--text) !important;
}

[data-theme="dark"] .input-group-append .btn,
[data-theme="dark"] .input-group-prepend .btn {
    background: var(--glass) !important;
    border-color: var(--glass-border) !important;
    color: var(--text) !important;
}

[data-theme="dark"] .input-group-append .btn:hover,
[data-theme="dark"] .input-group-prepend .btn:hover {
    background: var(--hover-bg) !important;
    color: var(--primary) !important;
}

[data-theme="dark"] .invalid-feedback {
    color: #ef4444 !important;
}

[data-theme="dark"] .valid-feedback {
    color: #10b981 !important;
}

[data-theme="dark"] .invalid-tooltip {
    background: #ef4444 !important;
    color: white !important;
}

[data-theme="dark"] .valid-tooltip {
    background: #10b981 !important;
    color: white !important;
}

[data-theme="dark"] .was-validated .form-control:invalid {
    border-color: #ef4444 !important;
}

[data-theme="dark"] .was-validated .form-control:valid {
    border-color: #10b981 !important;
}

[data-theme="dark"] .was-validated .form-select:invalid {
    border-color: #ef4444 !important;
}

[data-theme="dark"] .was-validated .form-select:valid {
    border-color: #10b981 !important;
}

/* Perfect Container for Screen Fitting */
.container, .container-fluid {
    max-width: 100%;
    padding-left: 1rem;
    padding-right: 1rem;
}

@media (min-width: 576px) {
    .container, .container-fluid {
        padding-left: 1.5rem;
        padding-right: 1.5rem;
    }
}

@media (min-width: 768px) {
    .container, .container-fluid {
        padding-left: 2rem;
        padding-right: 2rem;
    }
}

@media (min-width: 992px) {
    .container, .container-fluid {
        max-width: 1200px;
        margin: 0 auto;
    }
}

@media (min-width: 1400px) {
    .container, .container-fluid {
        max-width: 1320px;
    }
}

/* Enhanced Text Contrast for Light Mode */
h1, h2, h3, h4, h5, h6 {
    color: var(--text);
    font-weight: 600;
}

.fw-bold {
    color: var(--text) !important;
    font-weight: 700 !important;
}

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

/* Background Blobs - Professional & Subtle */
.blob {
    position: fixed;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    filter: blur(80px);
    z-index: -1;
    opacity: 0.15;
    animation: blobMove 20s infinite alternate cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
}

.blob-1 {
    top: -100px;
    left: -100px;
    background: var(--primary);
}

.blob-2 {
    bottom: -100px;
    right: -100px;
    background: var(--accent);
    animation-delay: -5s;
    animation-duration: 25s;
}

[data-theme="dark"] .blob {
    opacity: 0.12;
    filter: blur(100px);
}

[data-theme="dark"] .blob-1 {
    background: var(--primary-dark);
}

[data-theme="dark"] .blob-2 {
    background: var(--accent);
}

@keyframes blobMove {
    0% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, 50px) scale(1.1); }
    66% { transform: translate(-20px, 20px) scale(0.9); }
    100% { transform: translate(0, 0) scale(1); }
}

.glass-card {
    background: var(--glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    box-shadow: var(--shadow);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

/* Light Mode Glass Card Enhancement */
.glass-card h1,
.glass-card h2,
.glass-card h3,
.glass-card h4,
.glass-card h5,
.glass-card h6,
.glass-card p,
.glass-card span,
.glass-card div {
    color: inherit;
}

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

.glass-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
    opacity: 0.5;
    animation: shimmer 3s infinite;
}

.glass-card:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 25px 50px -15px rgba(79, 70, 229, 0.2);
    border-color: var(--primary);
}

[data-theme="dark"] .glass-card:hover {
    border-color: var(--primary-light);
    box-shadow: 0 25px 60px -12px rgba(56, 189, 248, 0.2);
}

/* Refined Navbar Mixing */
.navbar {
    background: var(--glass) !important;
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-bottom: 1px solid var(--glass-border) !important;
}

.navbar-brand span {
    background: linear-gradient(135deg, var(--text), var(--text-muted));
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 800;
    letter-spacing: -1px;
}

/* Nav Pills: Dynamic Mixing */
.nav-pills .nav-link {
    color: var(--text-muted);
    font-weight: 700;
    padding: 0.75rem 1.5rem;
    border-radius: 1rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid transparent;
}

.nav-pills .nav-link:hover {
    background: var(--hover-bg);
    color: var(--text);
    border-color: var(--primary);
}

.nav-pills .nav-link.active {
    background: var(--primary);
    color: #ffffff !important;
    box-shadow: 0 10px 25px -5px rgba(56, 189, 248, 0.4);
}

[data-theme="light"] .nav-pills .nav-link.active {
    background: #4f46e5; /* Professional Indigo for light mode */
    color: white !important;
}

/* Summary Box: Enhanced Visibility */
.summary-box {
    background: var(--glass);
    color: var(--text);
    border: 1px solid var(--glass-border);
    border-radius: 1.5rem;
    padding: 2rem;
    text-align: center;
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.summary-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--accent), var(--primary));
    opacity: 0.7;
}

.summary-value {
    font-size: 3.5rem;
    font-weight: 900;
    letter-spacing: -3px;
    line-height: 1;
    color: var(--primary);
    text-shadow: 0 2px 10px rgba(79, 70, 229, 0.2);
    margin-bottom: 1rem;
}

[data-theme="dark"] .summary-value {
    color: var(--primary);
    text-shadow: 0 2px 10px rgba(56, 189, 248, 0.3);
}

.summary-box .small {
    color: var(--text-muted) !important;
    font-weight: 600 !important;
}

.summary-box .opacity-75 {
    opacity: 0.75 !important;
}

.summary-box .fw-bold {
    color: var(--text) !important;
    font-weight: 700 !important;
}

[data-theme="dark"] .summary-box .fw-bold {
    color: var(--text) !important;
}

/* CGPA Class Specific Styling */
#cgpa-class {
    color: var(--primary) !important;
    font-weight: 700 !important;
    text-shadow: 0 1px 3px rgba(79, 70, 229, 0.2);
}

[data-theme="dark"] #cgpa-class {
    color: var(--primary) !important;
    text-shadow: 0 1px 3px rgba(56, 189, 248, 0.3);
}

#sgpa-result, #cgpa-result-val {
    color: var(--primary) !important;
    font-weight: 900 !important;
}

[data-theme="dark"] #sgpa-result,
[data-theme="dark"] #cgpa-result-val {
    color: var(--primary) !important;
    text-shadow: 0 2px 8px rgba(56, 189, 248, 0.3);
}

/* CGPA Input Elements Styling */
.cgpa-input-card {
    background: rgba(56, 189, 248, 0.05) !important;
    border: 1px solid var(--glass-border) !important;
    border-radius: 12px;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.cgpa-label {
    color: var(--text) !important;
    font-weight: 700 !important;
}

.cgpa-input-label {
    color: var(--text-muted) !important;
    background: transparent !important;
    border-color: var(--glass-border) !important;
}

.cgpa-input-field {
    background: var(--glass) !important;
    border-color: var(--glass-border) !important;
    color: var(--text) !important;
}

.cgpa-input-field::placeholder {
    color: var(--text-muted) !important;
    opacity: 0.7;
}

.cgpa-credits {
    color: var(--text-muted) !important;
}

/* Dark Mode CGPA Input Overrides */
[data-theme="dark"] .cgpa-input-card {
    background: rgba(56, 189, 248, 0.08) !important;
    border-color: var(--glass-border) !important;
}

[data-theme="dark"] .cgpa-label {
    color: var(--text) !important;
}

[data-theme="dark"] .cgpa-input-label {
    color: var(--text-muted) !important;
    border-color: var(--glass-border) !important;
}

[data-theme="dark"] .cgpa-input-field {
    background: var(--glass) !important;
    border-color: var(--glass-border) !important;
    color: var(--text) !important;
}

[data-theme="dark"] .cgpa-input-field::placeholder {
    color: var(--text-muted) !important;
}

[data-theme="dark"] .cgpa-credits {
    color: var(--text-muted) !important;
}

/* Light Mode CGPA Input Overrides */
[data-theme="light"] .cgpa-input-card {
    background: rgba(79, 70, 229, 0.05) !important;
    border-color: var(--glass-border) !important;
}

[data-theme="light"] .cgpa-label {
    color: var(--text) !important;
}

[data-theme="light"] .cgpa-input-label {
    color: var(--text-muted) !important;
    border-color: var(--glass-border) !important;
}

[data-theme="light"] .cgpa-input-field {
    background: var(--glass) !important;
    border-color: var(--glass-border) !important;
    color: var(--text) !important;
}

[data-theme="light"] .cgpa-input-field::placeholder {
    color: var(--text-muted) !important;
}

[data-theme="light"] .cgpa-credits {
    color: var(--text-muted) !important;
}

/* Form Elements Refinement */
.form-control, .form-select {
    background: var(--glass) !important;
    border: 1.5px solid var(--glass-border);
    border-radius: 1rem;
    padding: 0.75rem 1.25rem;
    font-weight: 500;
    color: var(--text) !important;
}

.form-control:focus, .form-select:focus {
    border-color: #ffffff;
    background: rgba(255, 255, 255, 1) !important;
    box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .form-control:focus, [data-theme="dark"] .form-select:focus {
    background: #1e293b !important;
    border-color: var(--primary);
    color: #ffffff !important;
}

/* Professional Table Styling */
.table thead th {
    background: rgba(255, 255, 255, 0.05);
    border-bottom: 2px solid var(--glass-border);
    color: var(--primary);
    font-size: 0.75rem;
    font-weight: 800;
    letter-spacing: 1.5px;
    padding: 1.25rem 1rem;
    text-transform: uppercase;
}

.table-hover tbody tr:hover {
    background: var(--hover-bg);
}

[data-theme="dark"] .table-hover tbody tr:hover {
    background: rgba(255, 255, 255, 0.04);
}

/* Button Refinements */
.btn-light {
    background: var(--glass);
    border: 1px solid var(--glass-border);
    font-weight: 700;
    transition: all 0.3s;
    color: var(--text);
}

.btn-light:hover {
    background: var(--primary);
    color: #ffffff;
    border-color: var(--primary);
    transform: translateY(-2px);
}

[data-theme="dark"] .btn-light:hover {
    background: var(--primary-light);
    border-color: var(--primary-light);
}

[data-theme="light"] .btn-light:hover {
    background: #4f46e5;
    color: white;
}

/* Enhanced Scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb {
    background: linear-gradient(var(--primary), var(--accent));
    border-radius: 10px;
    border: 2px solid var(--bg);
}

[data-theme="dark"] ::-webkit-scrollbar-thumb {
    background: linear-gradient(var(--primary-light), var(--accent-light));
}


/* Enhanced Text Visibility */
.text-muted {
    color: var(--text-muted) !important;
}

.text-secondary {
    color: var(--text-secondary) !important;
}

/* High contrast text for better readability */
h1, h2, h3, h4, h5, h6 {
    color: var(--text) !important;
    font-weight: 700;
}

p, span, div {
    color: var(--text);
}

/* Better contrast for links */
a {
    color: var(--primary) !important;
    text-decoration: none;
    font-weight: 500;
}

a:hover {
    color: var(--primary-light) !important;
    text-decoration: underline;
}

[data-theme="dark"] a:hover {
    color: var(--accent-light) !important;
}

/* Enhanced table text visibility */
.table {
    color: var(--text) !important;
}

.table th {
    color: var(--primary) !important;
    font-weight: 700;
}

.table td {
    color: var(--text) !important;
}

/* Better contrast for badges and alerts */
.badge {
    color: #ffffff !important;
    font-weight: 600;
}

.alert {
    color: var(--text) !important;
    background: var(--glass) !important;
    border: 1px solid var(--glass-border) !important;
}

/* Enhanced code blocks */
code, pre {
    color: var(--text) !important;
    background: var(--glass) !important;
    border: 1px solid var(--glass-border) !important;
}

/* Better card text visibility */
.card {
    color: var(--text) !important;
    background: var(--glass) !important;
    border: 1px solid var(--glass-border) !important;
}

.card-title {
    color: var(--text) !important;
    font-weight: 700;
}

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

.form-label {
    color: var(--text) !important;
    font-weight: 700;
}

::placeholder {
    color: var(--text-muted) !important;
    opacity: 0.8;
}

/* Enhanced contrast for form elements */
.form-control, .form-select {
    background: var(--glass) !important;
    border: 1.5px solid var(--glass-border);
    border-radius: 1rem;
    padding: 0.75rem 1.25rem;
    font-weight: 500;
    color: var(--text) !important;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary);
    background: var(--glass) !important;
    box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.1);
    color: var(--text) !important;
}

[data-theme="dark"] .form-control:focus, 
[data-theme="dark"] .form-select:focus {
    border-color: var(--primary-light);
    box-shadow: 0 0 0 4px rgba(56, 189, 248, 0.1);
    color: #ffffff !important;
}

/* Input text clarity */
.form-control {
    color: var(--text) !important;
}

.form-select {
    color: var(--text) !important;
}

.hidden { display: none !important; }

/* Login Modal Styles - Enhanced for both themes */
.login-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(20px);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.5s ease;
}

[data-theme="dark"] .login-overlay {
    background: rgba(0, 0, 0, 0.9);
}

[data-theme="light"] .login-overlay {
    background: rgba(0, 0, 0, 0.8);
}

.login-modal {
    background: var(--glass) !important;
    color: var(--text) !important;
    border: 1px solid var(--glass-border) !important;
    border-radius: 1.5rem;
    padding: 2rem;
    box-shadow: var(--shadow);
}

.login-modal {
    transform: scale(0.9);
    animation: modalIn 0.5s forwards cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes modalIn {
    to { transform: scale(1); }
}

/* Mobile Optimizations */
@media (max-width: 768px) {
    .container-fluid {
        padding-left: 10px !important;
        padding-right: 10px !important;
    }

    .glass-card {
        padding: 1.25rem !important;
        border-radius: 1rem;
    }

    h4 {
        font-size: 1.25rem;
    }

    /* SGPA Table Mobile Fixes */
    .table thead th {
        padding: 0.75rem 0.5rem !important;
        font-size: 0.65rem !important;
        letter-spacing: 0.5px !important;
    }

    .table td {
        padding: 0.75rem 0.4rem !important;
    }

    /* Subject Name Column */
    #sgpa-table-body td:first-child {
        max-width: 140px;
    }

    #sgpa-table-body td:first-child .fw-bold {
        font-size: 0.75rem !important;
        line-height: 1.2;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    #sgpa-table-body td:first-child .text-muted {
        font-size: 0.6rem !important;
    }

    /* Credits Column */
    .table td:nth-child(2), .table th:nth-child(2) {
        width: 40px;
        font-size: 0.75rem !important;
    }

    /* Grade Select Column */
    .table td:nth-child(3) {
        width: 85px;
    }

    .form-select-sm {
        font-size: 0.7rem !important;
        padding: 0.25rem 1.5rem 0.25rem 0.5rem !important;
        height: 32px;
    }

    /* GP Column */
    .gp-display {
        font-size: 0.8rem !important;
        width: 30px;
    }

    /* Summary Box Mobile */
    .summary-box {
        padding: 1.5rem !important;
        margin-bottom: 1rem;
    }

    .summary-value {
        font-size: 2.5rem !important;
    }

    /* Navigation Pills Mobile */
    .nav-pills .nav-link {
        padding: 0.5rem 0.75rem !important;
        font-size: 0.75rem !important;
    }

    /* Career Path Selector Mobile */
    #career-path-container select, #semester-select {
        font-size: 0.75rem !important;
        padding: 0.4rem 2rem 0.4rem 0.75rem !important;
    }

    .footer .glass-card {
        width: 100%;
        border-radius: 1rem;
    }
}

/* Enhanced Custom Scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb {
    background: var(--primary-light);
    border-radius: 10px;
    border: 2px solid var(--bg);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary);
}

[data-theme="dark"] ::-webkit-scrollbar-thumb {
    background: var(--primary-light);
}

[data-theme="dark"] ::-webkit-scrollbar-thumb:hover {
    background: var(--accent-light);
}

@media print {
    @page {
        size: auto;
        margin: 10mm;
    }
    
    html, body {
        height: 100%;
        background: white !important;
        color: black !important;
        font-size: 10pt; /* Slightly smaller for print fit */
    }

    .no-print, nav, .nav-pills, .btn, .btn-sm { 
        display: none !important; 
    }

    .container-fluid {
        padding: 0 !important;
        margin: 0 !important;
        width: 100% !important;
        max-width: 100% !important;
    }

    .tab-content {
        display: none !important;
    }

    .tab-content:not(.hidden) {
        display: block !important;
        page-break-after: avoid;
        page-break-before: avoid;
    }

    .glass-card { 
        border: 1px solid #e2e8f0 !important; 
        box-shadow: none !important; 
        background: white !important; 
        backdrop-filter: none !important;
        margin-bottom: 10mm !important;
        break-inside: avoid;
    }

    .summary-box { 
        background: #f1f5f9 !important; 
        color: #0f172a !important; 
        border: 1.5px solid #cbd5e1 !important;
        padding: 10mm !important;
        break-inside: avoid;
    }

    .summary-value {
        font-size: 24pt !important;
        color: #0f172a !important;
    }

    /* Table adjustments for print */
    .table thead th {
        background: #f8fafc !important;
        color: black !important;
        border-bottom: 1px solid black !important;
    }

    .table td, .table th {
        padding: 4px !important;
        font-size: 9pt !important;
    }

    input, select {
        border: none !important;
        background: transparent !important;
        font-weight: bold !important;
        padding: 0 !important;
    }

    #formula-note {
        background: #f8fafc !important;
        border: 1px solid #e2e8f0 !important;
        color: black !important;
    }
}

/* Offline Mode Styles */
.offline-status {
    animation: slideIn 0.3s ease, slideOut 0.3s ease 2.7s;
}

@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

@keyframes slideOut {
    from { transform: translateX(0); opacity: 1; }
    to { transform: translateX(100%); opacity: 0; }
}

/* Study Planner Enhanced Styles */
.study-day-card {
    transition: all 0.3s ease;
    border-left: 4px solid var(--primary);
}

.study-day-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 50px -15px rgba(79, 70, 229, 0.2);
    border-left-color: var(--primary-light);
}

.study-day-header {
    position: relative;
}

.study-day-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), transparent);
    opacity: 0.3;
}

.study-session {
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.study-session:hover {
    transform: translateX(8px) scale(1.02);
    box-shadow: 0 8px 25px -8px rgba(0, 0, 0, 0.15);
}

.study-session:hover::before {
    opacity: 1;
}

.session-actions {
    opacity: 0;
    transition: all 0.3s ease;
    transform: translateX(10px);
}

.study-session:hover .session-actions {
    opacity: 1;
    transform: translateX(0);
}

.session-actions .btn {
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    border-radius: 0.375rem;
    transition: all 0.2s ease;
}

.session-actions .btn:hover {
    transform: scale(1.1);
}

/* Progress Enhancements */
.progress {
    background-color: var(--glass-border);
    border-radius: 10px;
    overflow: hidden;
    position: relative;
}

.progress-bar {
    transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

/* Study Streak Animation */
#study-streak {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

/* Status Badge Enhancements */
.badge {
    font-weight: 600;
    padding: 0.35em 0.65em;
    border-radius: 0.5rem;
    text-transform: uppercase;
    font-size: 0.7rem;
    letter-spacing: 0.5px;
    position: relative;
    overflow: hidden;
}

.badge::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.badge:hover::before {
    left: 100%;
}

/* Subject Icon Styling */
.subject-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary);
    color: white;
    font-size: 12px;
    margin-right: 8px;
}

/* Study Session Status Indicators */
.status-completed {
    border-left-color: #10b981 !important;
    background: linear-gradient(90deg, rgba(16, 185, 129, 0.1), transparent) !important;
}

.status-in-progress {
    border-left-color: #f59e0b !important;
    background: linear-gradient(90deg, rgba(245, 158, 11, 0.1), transparent) !important;
}

.status-pending {
    border-left-color: #6b7280 !important;
    background: linear-gradient(90deg, rgba(107, 114, 128, 0.1), transparent) !important;
}

/* Exam Study Planner Styles */
.exam-card {
    transition: all 0.3s ease;
    border-left: 4px solid var(--primary);
}

.exam-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 50px -15px rgba(79, 70, 229, 0.2);
    border-left-color: var(--primary-light);
}

.exam-details {
    font-size: 0.85rem;
}

.exam-countdown {
    font-size: 0.9rem;
    font-weight: 600;
}

.exam-actions {
    opacity: 0;
    transition: all 0.3s ease;
    transform: translateX(10px);
}

.exam-card:hover .exam-actions {
    opacity: 1;
    transform: translateX(0);
}

.exam-actions .btn {
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    border-radius: 0.375rem;
    transition: all 0.2s ease;
}

.exam-actions .btn:hover {
    transform: scale(1.1);
}

/* Study Allocation Progress */
.study-allocation {
    margin-top: 1rem;
}

.study-allocation .progress {
    height: 8px;
    background-color: var(--glass-border);
    border-radius: 10px;
    overflow: hidden;
}

.study-allocation .progress-bar {
    transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.study-allocation .break-session::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
}

/* Break Session Styles */
.break-session {
    opacity: 0.8;
    border-style: dashed !important;
}

.break-session:hover {
    opacity: 1;
}

/* Priority Badges */
.priority-high {
    background: linear-gradient(135deg, #ef4444, #dc2626) !important;
}

.priority-medium {
    background: linear-gradient(135deg, #f59e0b, #d97706) !important;
}

.priority-low {
    background: linear-gradient(135deg, #10b981, #059669) !important;
}

/* Urgency Animations */
.animate-pulse {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { 
        opacity: 1; 
        transform: scale(1);
    }
    50% { 
        opacity: 0.7; 
        transform: scale(1.05);
    }
}

/* Exam Dashboard Stats */
.exam-dashboard .stat-card {
    transition: all 0.3s ease;
}

.exam-dashboard .stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px -8px rgba(0, 0, 0, 0.15);
}

/* Enhanced Button Styles */
.btn-sparkles {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border: none;
    color: white;
    transition: all 0.3s ease;
}

.btn-sparkles:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px -5px rgba(79, 70, 229, 0.3);
}

/* Light Mode Button Enhancements */
.btn-light {
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid var(--glass-border);
    color: var(--text);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.btn-light:hover {
    background: rgba(255, 255, 255, 1);
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px -8px rgba(79, 70, 229, 0.3);
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px -8px rgba(79, 70, 229, 0.4);
}

.btn-outline-primary {
    background: transparent;
    border-color: var(--primary);
    color: var(--primary);
}

.btn-outline-primary:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px -8px rgba(79, 70, 229, 0.3);
}

/* Delete Button Styles */
.btn-outline-danger {
    border-color: #ef4444;
    color: #ef4444;
    background: transparent;
    transition: all 0.3s ease;
}

.btn-outline-danger:hover {
    background: #ef4444;
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 10px 25px -5px rgba(239, 68, 68, 0.3);
}

[data-theme="dark"] .btn-outline-danger {
    border-color: #dc2626;
    color: #dc2626;
}

[data-theme="dark"] .btn-outline-danger:hover {
    background: #dc2626;
    color: white;
    box-shadow: 0 10px 25px -5px rgba(220, 38, 38, 0.4);
}

/* Delete All Button Animation */
#delete-all-plan-btn:hover,
#delete-plan-btn:hover {
    animation: shake 0.5s ease-in-out;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-2px); }
    75% { transform: translateX(2px); }
}

/* AI Button Styling */
#generate-plan-btn {
    background: linear-gradient(135deg, var(--primary), var(--accent)) !important;
    border: none !important;
    color: white !important;
    position: relative;
    overflow: hidden;
}

#generate-plan-btn:hover {
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 15px 40px -10px rgba(79, 70, 229, 0.4);
}

/* AI Session Styling */
.ai-optimized {
    border-left: 4px solid var(--accent) !important;
    background: linear-gradient(135deg, var(--glass), rgba(6, 182, 212, 0.05)) !important;
}

.ai-optimized::before {
    content: 'AI';
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    background: var(--accent);
    color: white;
    font-size: 0.6rem;
    font-weight: 700;
    padding: 0.2rem 0.4rem;
    border-radius: 0.3rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* AI Break Styling */
[data-theme="dark"] .ai-break {
    background: linear-gradient(135deg, rgba(34, 211, 238, 0.1), var(--glass)) !important;
    border-left-color: var(--accent) !important;
}

[data-theme="light"] .ai-break {
    background: linear-gradient(135deg, rgba(6, 182, 212, 0.1), var(--glass)) !important;
    border-left-color: var(--primary) !important;
}

/* AI Badge */
.ai-badge {
    background: linear-gradient(135deg, var(--primary), var(--accent)) !important;
    color: white !important;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.3rem 0.6rem;
    border-radius: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
}

.ai-badge::before {
    content: 'AI';
    background: rgba(255, 255, 255, 0.2);
    width: 1.2rem;
    height: 1.2rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.6rem;
    font-weight: 900;
}

/* Enhanced Modal Styles */
.modal-content {
    background: var(--glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    box-shadow: var(--shadow);
}

.modal-header {
    border-bottom: 1px solid var(--glass-border);
    background: var(--glass);
}

.modal-footer {
    border-top: 1px solid var(--glass-border);
    background: var(--glass);
}

.modal-lg {
    max-width: 800px;
}

[data-theme="dark"] .modal-content {
    background: var(--glass);
    border-color: var(--glass-border);
    box-shadow: 0 25px 50px -15px rgba(0, 0, 0, 0.5);
}

[data-theme="dark"] .modal-header,
[data-theme="dark"] .modal-footer {
    background: var(--glass);
    border-color: var(--glass-border);
}

/* Enhanced Form Styles */
.form-control, .form-select {
    background: var(--glass);
    border: 1px solid var(--glass-border);
    color: var(--text);
    border-radius: 8px;
    transition: all 0.3s ease;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary) !important;
    box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.1) !important;
    background: var(--glass);
    outline: none;
}

[data-theme="dark"] .form-control, 
[data-theme="dark"] .form-select {
    background: var(--glass);
    border-color: var(--glass-border);
    color: var(--text);
}

[data-theme="dark"] .form-control:focus, 
[data-theme="dark"] .form-select:focus {
    border-color: var(--primary-light) !important;
    box-shadow: 0 0 0 4px rgba(56, 189, 248, 0.2) !important;
}

/* Chapter Badges */
.chapter-badge {
    font-size: 0.75rem;
    padding: 0.25rem 0.5rem;
    border-radius: 0.375rem;
    background: var(--glass);
    border: 1px solid var(--glass-border);
    color: var(--text);
    transition: all 0.2s ease;
}

.chapter-badge:hover {
    background: var(--hover-bg);
    transform: translateY(-1px);
}

/* Time Indicator */
.time-indicator {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.5rem;
    border-radius: 0.375rem;
    font-size: 0.75rem;
    font-weight: 600;
    background: var(--glass);
    border: 1px solid var(--glass-border);
    color: var(--text);
}

.time-indicator.urgent {
    background: rgba(239, 68, 68, 0.1);
    border-color: rgba(239, 68, 68, 0.2);
    color: #ef4444;
}

.time-indicator.warning {
    background: rgba(245, 158, 11, 0.1);
    border-color: rgba(245, 158, 11, 0.2);
    color: #f59e0b;
}

.time-indicator.normal {
    background: rgba(59, 130, 246, 0.1);
    border-color: rgba(59, 130, 246, 0.2);
    color: #3b82f6;
}

/* Study Plan Timeline */
.study-timeline {
    position: relative;
    padding-left: 2rem;
}

.study-timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--glass-border);
}

.study-timeline-item {
    position: relative;
    margin-bottom: 2rem;
}

.study-timeline-item::before {
    content: '';
    position: absolute;
    left: -2.3rem;
    top: 0.5rem;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--primary);
    border: 2px solid var(--bg);
}

/* Subject Cards */
.subject-card {
    transition: all 0.3s ease;
    border-left: 4px solid var(--primary);
}

.subject-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 40px -10px rgba(79, 70, 229, 0.15);
}

.subject-actions {
    opacity: 0;
    transition: all 0.3s ease;
    transform: translateX(10px);
}

.subject-card:hover .subject-actions {
    opacity: 1;
    transform: translateX(0);
}

.subject-actions .btn {
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    border-radius: 0.375rem;
    transition: all 0.2s ease;
}

.subject-actions .btn:hover {
    transform: scale(1.1);
}

/* Perfect Responsive Design */
@media (max-width: 1400px) {
    .container, .container-fluid {
        padding-left: 1.5rem;
        padding-right: 1.5rem;
    }
}

@media (max-width: 1200px) {
    .container, .container-fluid {
        padding-left: 1rem;
        padding-right: 1rem;
    }
}

@media (max-width: 992px) {
    .glass-card {
        border-radius: 12px;
    }
    
    h1, h2, h3, h4, h5, h6 {
        font-size: 0.9em;
    }
}

@media (max-width: 768px) {
    .container, .container-fluid {
        padding-left: 0.75rem;
        padding-right: 0.75rem;
    }
    
    .glass-card {
        border-radius: 8px;
        margin-bottom: 1rem !important;
    }
    
    .exam-actions, .session-actions, .subject-actions {
        opacity: 1;
        transform: none;
    }
    
    .modal-lg {
        max-width: 95%;
        margin: 1rem;
    }
    
    .modal-content {
        border-radius: 12px;
    }
    
    .btn {
        padding: 0.5rem 1rem;
        font-size: 0.875rem;
    }
    
    .btn-sm {
        padding: 0.375rem 0.75rem;
        font-size: 0.8125rem;
    }
    
    h1 { font-size: 1.75rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.25rem; }
    h4 { font-size: 1.125rem; }
    h5 { font-size: 1rem; }
    h6 { font-size: 0.875rem; }
}

@media (max-width: 576px) {
    .container, .container-fluid {
        padding-left: 0.5rem;
        padding-right: 0.5rem;
    }
    
    .glass-card {
        padding: 1rem !important;
        margin-bottom: 0.75rem !important;
    }
    
    .modal-lg {
        max-width: 98%;
        margin: 0.5rem;
    }
    
    .modal-content {
        padding: 1rem !important;
    }
    
    .btn {
        padding: 0.375rem 0.75rem;
        font-size: 0.8125rem;
    }
    
    .btn-sm {
        padding: 0.25rem 0.5rem;
        font-size: 0.75rem;
    }
    
    .row {
        margin-left: -0.5rem;
        margin-right: -0.5rem;
    }
    
    .row > * {
        padding-left: 0.5rem;
        padding-right: 0.5rem;
    }
    
    .g-3 > * {
        padding-left: 0.25rem;
        padding-right: 0.25rem;
    }
    
    .g-4 > * {
        padding-left: 0.5rem;
        padding-right: 0.5rem;
    }
}


/* Progress Bar Enhancements */
.progress {
    background-color: var(--glass-border);
}

.progress-bar {
    transition: width 0.6s ease;
}

/* Modal Enhancements */
.modal-content {
    background: var(--glass) !important;
    color: var(--text) !important;
    border: 1px solid var(--glass-border) !important;
    backdrop-filter: blur(16px);
}

.modal-header {
    border-bottom: 1px solid var(--glass-border) !important;
}

.modal-footer {
    border-top: 1px solid var(--glass-border) !important;
}

/* Form Enhancements */
.form-control:focus, .form-select:focus {
    border-color: var(--primary) !important;
    box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.1) !important;
}

[data-theme="dark"] .form-control:focus, 
[data-theme="dark"] .form-select:focus {
    border-color: var(--primary-light) !important;
    box-shadow: 0 0 0 4px rgba(56, 189, 248, 0.1) !important;
}

/* Alert Enhancements */
.alert {
    border: none !important;
    backdrop-filter: blur(16px);
}

.alert-success {
    background: rgba(16, 185, 129, 0.1) !important;
    color: #10b981 !important;
    border: 1px solid rgba(16, 185, 129, 0.2) !important;
}

.alert-warning {
    background: rgba(245, 158, 11, 0.1) !important;
    color: #f59e0b !important;
    border: 1px solid rgba(245, 158, 11, 0.2) !important;
}

.alert-danger {
    background: rgba(239, 68, 68, 0.1) !important;
    color: #ef4444 !important;
    border: 1px solid rgba(239, 68, 68, 0.2) !important;
}

.alert-info {
    background: rgba(59, 130, 246, 0.1) !important;
    color: #3b82f6 !important;
    border: 1px solid rgba(59, 130, 246, 0.2) !important;
}

/* Badge Enhancements */
.badge {
    font-weight: 600;
    padding: 0.4em 0.6em;
}

/* Button Enhancements */
.btn-outline-primary:hover {
    background: var(--primary) !important;
    border-color: var(--primary) !important;
}

[data-theme="dark"] .btn-outline-primary:hover {
    background: var(--primary-light) !important;
    border-color: var(--primary-light) !important;
}

/* Loading States */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid var(--primary);
    border-top: 2px solid transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Analytics Dashboard Styles */
.analytics-dashboard {
    background: var(--glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 1.5rem;
}

.analytics-card {
    background: var(--glass);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 1rem;
    transition: all 0.3s ease;
}

.analytics-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px -10px rgba(79, 70, 229, 0.3);
}

.stat-card {
    background: linear-gradient(135deg, var(--glass), rgba(79, 70, 229, 0.05));
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 1.5rem;
    text-align: center;
    transition: all 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 15px 35px -10px rgba(79, 70, 229, 0.4);
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-muted);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.chart-container {
    position: relative;
    height: 300px;
    width: 100%;
}

.analytics-header {
    display: flex;
    justify-content: between;
    align-items: center;
    margin-bottom: 2rem;
}

.analytics-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text);
    margin: 0;
}

.refresh-btn {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border: none;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.refresh-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px -5px rgba(79, 70, 229, 0.4);
}

.refresh-btn:active {
    transform: translateY(0);
}

/* Chart responsive styles */
@media (max-width: 768px) {
    .analytics-dashboard {
        padding: 1rem;
    }
    
    .chart-container {
        height: 250px;
    }
    
    .stat-value {
        font-size: 2rem;
    }
    
    .analytics-card {
        padding: 0.75rem;
    }
}

/* Responsive Enhancements */
@media (max-width: 768px) {
    .exam-actions, .session-actions {
        opacity: 1;
    }
    
    .study-session {
        padding: 0.75rem !important;
    }
    
    .exam-card, .study-day-card {
        margin-bottom: 1rem !important;
    }
}

/* PWA Banner Styles */
.pwa-banner {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 2px solid rgba(255, 255, 255, 0.1);
    position: sticky;
    top: 0;
    z-index: 2000;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
}

.pwa-icon {
    background: rgba(255, 255, 255, 0.15);
    width: 32px;
    height: 32px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.pwa-banner.hidden {
    display: none !important;
}

#pwa-install-btn {
    background-color: white !important;
    border-color: white !important;
    color: var(--primary) !important;
    padding: 0.25rem 0.75rem;
    border-radius: 6px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

#pwa-install-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.15);
}