/*
 * UI Consistency Stylesheet for EduCore
 * Fixes common UI/UX inconsistencies across the application
 */

/* === BUTTON SYSTEM === */

/* Base overrides for Bootstrap .btn */
.btn {
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-sm);
    border-radius: var(--radius-md);
    transition: var(--transition-base);
    padding: 0.5rem 1rem;
    line-height: 1.5;
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: var(--font-size-xs);
}

.btn-lg {
    padding: 0.625rem 1.25rem;
    font-size: var(--font-size-md);
}

/* Fix invisible hover — was same color as default state */
.btn-primary,
a.btn-primary,
button.btn-primary {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff !important;
}

.btn-primary:hover,
.btn-primary:focus,
a.btn-primary:hover,
a.btn-primary:focus,
button.btn-primary:hover,
button.btn-primary:focus {
    background-color: var(--color-primary-hover);
    border-color: var(--color-primary-hover);
    color: #fff !important;
}

.btn-secondary,
a.btn-secondary,
button.btn-secondary {
    background-color: var(--color-gray-700);
    border-color: var(--color-gray-700);
    color: #fff !important;
}

.btn-secondary:hover,
.btn-secondary:focus,
a.btn-secondary:hover,
a.btn-secondary:focus,
button.btn-secondary:hover,
button.btn-secondary:focus {
    background-color: var(--color-gray-800);
    border-color: var(--color-gray-800);
    color: #fff !important;
}

.btn-success,
a.btn-success,
button.btn-success {
    background-color: var(--color-success);
    border-color: var(--color-success);
    color: #fff !important;
}

.btn-success:hover,
.btn-success:focus,
a.btn-success:hover,
a.btn-success:focus,
button.btn-success:hover,
button.btn-success:focus {
    background-color: #0d9466;
    border-color: #0d9466;
    color: #fff !important;
}

.btn-info,
a.btn-info,
button.btn-info {
    background-color: #0f766e;
    border-color: #0f766e;
    color: #fff !important;
}

.btn-info:hover,
.btn-info:focus,
a.btn-info:hover,
a.btn-info:focus,
button.btn-info:hover,
button.btn-info:focus {
    background-color: #115e59;
    border-color: #115e59;
    color: #fff !important;
}

.btn-warning,
a.btn-warning,
button.btn-warning {
    background-color: #b45309;
    border-color: #b45309;
    color: #fff !important;
}

.btn-warning:hover,
.btn-warning:focus,
a.btn-warning:hover,
a.btn-warning:focus,
button.btn-warning:hover,
button.btn-warning:focus {
    background-color: #92400e;
    border-color: #92400e;
    color: #fff !important;
}

.btn-light,
a.btn-light,
button.btn-light {
    background-color: var(--color-gray-100);
    border-color: var(--color-gray-300);
    color: var(--color-gray-900) !important;
}

.btn-light:hover,
.btn-light:focus,
a.btn-light:hover,
a.btn-light:focus,
button.btn-light:hover,
button.btn-light:focus {
    background-color: #e2e8f0;
    border-color: var(--color-gray-400);
    color: var(--color-gray-900) !important;
}

.btn-dark {
    background-color: var(--color-gray-900);
    border-color: var(--color-gray-900);
    color: #fff;
}

.btn-dark:hover,
.btn-dark:focus {
    background-color: var(--color-gray-800);
    border-color: var(--color-gray-800);
    color: #fff;
}

.btn-outline-primary,
a.btn-outline-primary,
button.btn-outline-primary {
    color: var(--color-primary) !important;
    border-color: var(--color-primary);
    background-color: #fff;
}

.btn-outline-primary:hover,
.btn-outline-primary:focus,
a.btn-outline-primary:hover,
a.btn-outline-primary:focus,
button.btn-outline-primary:hover,
button.btn-outline-primary:focus {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff !important;
}

.btn-outline-secondary,
a.btn-outline-secondary,
button.btn-outline-secondary {
    color: var(--color-gray-700) !important;
    border-color: var(--color-gray-400);
    background-color: #fff;
}

.btn-outline-secondary:hover,
.btn-outline-secondary:focus,
a.btn-outline-secondary:hover,
a.btn-outline-secondary:focus,
button.btn-outline-secondary:hover,
button.btn-outline-secondary:focus {
    background-color: var(--color-gray-700);
    border-color: var(--color-gray-700);
    color: #fff !important;
}

.btn-outline-success,
a.btn-outline-success,
button.btn-outline-success {
    color: #047857 !important;
    border-color: #047857;
    background-color: #fff;
}

.btn-outline-success:hover,
.btn-outline-success:focus,
a.btn-outline-success:hover,
a.btn-outline-success:focus,
button.btn-outline-success:hover,
button.btn-outline-success:focus {
    background-color: #047857;
    border-color: #047857;
    color: #fff !important;
}

.btn-outline-info,
a.btn-outline-info,
button.btn-outline-info {
    color: #0f766e !important;
    border-color: #0f766e;
    background-color: #fff;
}

.btn-outline-info:hover,
.btn-outline-info:focus,
a.btn-outline-info:hover,
a.btn-outline-info:focus,
button.btn-outline-info:hover,
button.btn-outline-info:focus {
    background-color: #0f766e;
    border-color: #0f766e;
    color: #fff !important;
}

.btn-outline-warning,
a.btn-outline-warning,
button.btn-outline-warning {
    color: #92400e !important;
    border-color: #b45309;
    background-color: #fff;
}

.btn-outline-warning:hover,
.btn-outline-warning:focus,
a.btn-outline-warning:hover,
a.btn-outline-warning:focus,
button.btn-outline-warning:hover,
button.btn-outline-warning:focus {
    background-color: #b45309;
    border-color: #b45309;
    color: #fff !important;
}

.btn-outline-danger,
a.btn-outline-danger,
button.btn-outline-danger {
    color: #b91c1c !important;
    border-color: #dc2626;
    background-color: #fff;
}

.btn-outline-danger:hover,
.btn-outline-danger:focus,
a.btn-outline-danger:hover,
a.btn-outline-danger:focus,
button.btn-outline-danger:hover,
button.btn-outline-danger:focus {
    background-color: #dc2626;
    border-color: #dc2626;
    color: #fff !important;
}

.btn-outline-light {
    color: #fff;
    border-color: rgba(255, 255, 255, 0.88);
    background-color: rgba(15, 23, 42, 0.18);
}

.btn-outline-light:hover,
.btn-outline-light:focus {
    background-color: #fff;
    border-color: #fff;
    color: var(--color-gray-900);
}

.btn:focus-visible {
    outline: 3px solid rgba(30, 58, 138, 0.28);
    outline-offset: 2px;
}

/* Semantic aliases for primary confirmation actions */
.btn-submit, .btn-save, .btn-confirm {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
    font-weight: var(--font-weight-medium);
}

.btn-submit:hover, .btn-submit:focus,
.btn-save:hover, .btn-save:focus,
.btn-confirm:hover, .btn-confirm:focus {
    background-color: var(--color-primary-hover);
    border-color: var(--color-primary-hover);
    color: #fff;
}

/* Semantic aliases for creation actions */
.btn-create, .btn-add {
    background-color: var(--color-success);
    border-color: var(--color-success);
    color: #fff;
    font-weight: var(--font-weight-medium);
}

.btn-create:hover, .btn-create:focus,
.btn-add:hover, .btn-add:focus {
    background-color: #0d9466;
    border-color: #0d9466;
    color: #fff;
}

/* Cancel button */
.btn-cancel {
    background-color: transparent;
    border-color: var(--color-border);
    color: var(--color-text-secondary);
}

.btn-cancel:hover, .btn-cancel:focus {
    background-color: var(--color-gray-100);
    border-color: var(--color-gray-300);
    color: var(--color-text-primary);
}

/* Back button */
.btn-back {
    background-color: transparent;
    border-color: var(--color-border);
    color: var(--color-text-secondary);
}

.btn-back:hover, .btn-back:focus {
    background-color: var(--color-gray-100);
    border-color: var(--color-gray-300);
    color: var(--color-text-primary);
}

/* Delete button */
.btn-delete {
    background-color: var(--color-danger);
    border-color: var(--color-danger);
    color: #fff;
}

.btn-delete:hover, .btn-delete:focus {
    background-color: #dc2626;
    border-color: #dc2626;
    color: #fff;
}

/* Remove button */
.btn-remove {
    background-color: var(--color-danger);
    border-color: var(--color-danger);
    color: #fff;
}

.btn-remove:hover, .btn-remove:focus {
    background-color: #dc2626;
    border-color: #dc2626;
    color: #fff;
}

/* Complete/Approve actions */
.btn-complete,
.btn-approve {
    background-color: var(--color-success);
    border-color: var(--color-success);
    color: #fff;
    font-weight: var(--font-weight-medium);
}

.btn-complete:hover, .btn-complete:focus,
.btn-approve:hover, .btn-approve:focus {
    background-color: #0d9466;
    border-color: #0d9466;
    color: #fff;
}

/* === Table Consistency === */

/* Standard table styling */
.data-table {
    width: 100%;
    margin-bottom: 1rem;
    vertical-align: top;
    border-color: var(--color-border);
}

.data-table thead {
    background-color: var(--color-gray-100);
    border-bottom: 2px solid var(--color-gray-300);
}

.data-table th {
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    font-size: var(--font-size-sm);
    letter-spacing: 0.5px;
    padding: 1rem 0.75rem;
}

/* Action buttons in tables */
.table-actions {
    white-space: nowrap;
}

.table-actions .btn {
    padding: 0.25rem 0.5rem;
    font-size: var(--font-size-sm);
}

/* === FORM SYSTEM === */

/* Standard form card */
.form-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    padding: var(--space-8);
}

.form-card .card-header {
    background-color: transparent;
    border-bottom: 1px solid var(--color-border);
    font-weight: var(--font-weight-semibold);
}

/* Form sections */
.form-section {
    padding-bottom: var(--space-6);
    margin-bottom: var(--space-6);
    border-bottom: 1px solid var(--color-border);
}

.form-section:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.form-section-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-4);
}

.form-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--space-2);
    padding-top: var(--space-6);
    margin-top: var(--space-6);
    border-top: 1px solid var(--color-border);
    flex-wrap: wrap;
}

@media (max-width: 576px) {
    .form-actions {
        flex-direction: column-reverse;
    }

    .form-actions .btn {
        width: 100%;
        text-align: center;
    }
}

/* === Alert Consistency === */

/* Standard alert with icon */
.alert-with-icon {
    display: flex;
    align-items: start;
    gap: 0.75rem;
}

.alert-with-icon i {
    font-size: 1.25rem;
    margin-top: 0.125rem;
}

/* === Dashboard Widget Consistency === */

/* Standard stat widget (alias to stat-card) */
.stat-widget {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
    transition: var(--transition-base);
}

.stat-widget:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.stat-widget .stat-value {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    line-height: 1;
    margin-bottom: 0.25rem;
}

.stat-widget .stat-label {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
}

.stat-widget .stat-icon {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 3rem;
    opacity: 0.1;
}

/* === Icon Standardization === */

/* Action icon mapping */
[data-action="view"]::before,
.btn-view i::before { content: "\f06e"; } /* fa-eye */

[data-action="edit"]::before,
.btn-edit i::before { content: "\f303"; } /* fa-pencil-alt */

[data-action="delete"]::before,
.btn-delete i::before { content: "\f2ed"; } /* fa-trash-alt */

[data-action="save"]::before,
.btn-save i::before { content: "\f0c7"; } /* fa-save */

[data-action="add"]::before,
.btn-add i::before { content: "\f067"; } /* fa-plus */

[data-action="download"]::before,
.btn-download i::before { content: "\f019"; } /* fa-download */

[data-action="print"]::before,
.btn-print i::before { content: "\f02f"; } /* fa-print */

/* === Breadcrumb Consistency === */

.breadcrumb {
    background-color: transparent;
    padding: 0.75rem 0;
    margin-bottom: var(--space-6);
    font-size: var(--font-size-sm);
}

.breadcrumb-item + .breadcrumb-item::before {
    content: "›";
    font-weight: bold;
    color: var(--color-gray-500);
}

/* === Mobile Responsiveness === */

/* Responsive tables */
@media (max-width: 767px) {
    .table-responsive-mobile {
        display: block;
        width: 100%;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .table-responsive-mobile table {
        min-width: 600px;
    }
}

/* Mobile form adjustments */
@media (max-width: 576px) {
    .form-section {
        margin-bottom: var(--space-6);
    }

    .stat-widget {
        margin-bottom: var(--space-4);
    }

    .stat-widget .stat-value {
        font-size: var(--font-size-2xl);
    }
}

/* === Accessibility Improvements === */

/* Focus indicators - use correct primary color */
.btn:focus,
.form-control:focus,
.form-select:focus {
    box-shadow: 0 0 0 0.25rem rgba(30, 58, 138, 0.2);
    border-color: var(--color-primary);
    outline: none;
}

/* Django form error list */
.errorlist {
    list-style: none;
    padding: var(--space-3) var(--space-4);
    margin: 0 0 var(--space-4) 0;
    background: var(--color-danger-light);
    border: 1px solid var(--color-danger);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-sm);
    color: var(--color-danger);
}

.errorlist li {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-1) 0;
}

.errorlist li + li {
    border-top: 1px solid rgba(239, 68, 68, 0.15);
    padding-top: var(--space-2);
    margin-top: var(--space-1);
}

.errorlist li::before {
    content: '\f06a';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    font-size: var(--font-size-xs);
    flex-shrink: 0;
}

/* Form checkbox and radio */
.form-check-input {
    border-color: var(--color-border);
    width: 1rem;
    height: 1rem;
    transition: var(--transition-fast);
    cursor: pointer;
}

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

.form-check-input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 0.2rem rgba(30, 58, 138, 0.15);
    outline: none;
}

/* Skip navigation link */
.skip-navigation {
    position: absolute;
    left: -9999px;
    top: 0;
    z-index: 999;
    padding: 0.5rem 1rem;
    background: var(--color-primary);
    color: white;
    text-decoration: none;
}

.skip-navigation:focus {
    left: 0;
}

/* Screen reader only content */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* === Loading States === */

.loading-spinner {
    display: inline-block;
    width: 1rem;
    height: 1rem;
    border: 2px solid var(--color-gray-300);
    border-radius: 50%;
    border-top-color: var(--color-primary);
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* === CARD SYSTEM === */

/* Base Card */
.card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--space-6);
    transition: var(--transition-base);
}

.card-header {
    background: transparent;
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-4) var(--space-6);
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-md);
    color: var(--color-text-primary);
}

.card-body {
    padding: var(--space-6);
}

.card-footer {
    background: var(--color-gray-50);
    border-top: 1px solid var(--color-border);
    padding: var(--space-3) var(--space-6);
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Disable hover effect for cards that shouldn't move */
.card.no-hover:hover {
    transform: none;
    box-shadow: var(--shadow-sm);
}

/* Stat Card */
.stat-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    padding: var(--space-6);
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}

.stat-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

/* Content Card */
.content-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-base);
}

.content-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-gray-300);
}

/* Dashboard card alias → content-card behavior */
.dashboard-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--space-6);
    transition: var(--transition-base);
}

.dashboard-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* === Spacing Consistency === */

.section-spacing {
    margin-bottom: var(--space-8);
}

.element-spacing {
    margin-bottom: var(--space-4);
}

/* === Page Header Consistency === */

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-4);
    margin-bottom: var(--space-6);
    padding-bottom: var(--space-6);
    border-bottom: 1px solid var(--color-border);
}

.page-header h1,
.page-header h2 {
    margin-bottom: 0;
}

.page-header .page-description {
    color: var(--color-text-secondary);
    margin-bottom: 0;
}

.page-actions {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    flex-wrap: wrap;
}

/* === Modal Consistency === */

.modal-header {
    background-color: var(--color-gray-50);
    border-bottom: 1px solid var(--color-border);
}

.modal-footer {
    background-color: var(--color-gray-50);
    border-top: 1px solid var(--color-border);
}

/* === Navigation Active States === */

.sidebar .nav-link.active,
.dashboard-sidebar .nav-link.active,
.nav-pills .nav-link.active {
    background-color: var(--color-primary);
    color: white !important;
    border-radius: var(--radius-sm);
}

.navbar-nav .nav-link.active {
    background-color: transparent;
    color: var(--color-primary) !important;
    border-bottom: 2px solid var(--color-primary);
}

/* === Print Styles === */

@media print {
    .no-print {
        display: none !important;
    }

    .card {
        box-shadow: none;
        border: 1px solid var(--color-gray-400);
    }

    .page-break {
        page-break-before: always;
    }
}

/* === Avatar Sizes === */

.avatar-sm {
    width: 32px;
    height: 32px;
    object-fit: cover;
    border-radius: 50%;
}

.avatar-md {
    width: 40px;
    height: 40px;
    object-fit: cover;
    border-radius: 50%;
}

.avatar-lg {
    width: 56px;
    height: 56px;
    object-fit: cover;
    border-radius: 50%;
}

.avatar-xl {
    width: 80px;
    height: 80px;
    object-fit: cover;
    border-radius: 50%;
}

/* === Progress Bar Sizes === */

.progress-sm {
    height: 8px;
}

.progress-md {
    height: 16px;
}

.progress-lg {
    height: 24px;
}

/* === Utility Classes === */

.cursor-pointer {
    cursor: pointer;
}

.cursor-not-allowed {
    cursor: not-allowed;
}

/* === Micro-interactions === */

/* Table row hover transition */
.table tbody tr {
    transition: background-color 0.15s ease;
}

/* === EMPTY STATE SYSTEM === */

.empty-state {
    text-align: center;
    padding: var(--space-12) var(--space-8);
    color: var(--color-text-muted);
}

.empty-state-icon {
    width: 64px;
    height: 64px;
    background: var(--color-gray-100);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-4);
    color: var(--color-gray-400);
}

.empty-state-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-2);
}

.empty-state-description {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-6);
    max-width: 360px;
    margin-left: auto;
    margin-right: auto;
}

/* Legacy empty state support */
.empty-state i,
.empty-state .fa,
.empty-state .fas,
.empty-state .far,
.empty-state .fab {
    opacity: 0.5;
    display: block;
    margin-bottom: 1rem;
}

.empty-state h5 {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-2);
}

.empty-state p {
    color: var(--color-text-muted);
    max-width: 360px;
    margin: 0 auto var(--space-4);
}

/* === Table Loading State === */

.table-loading {
    text-align: center;
    padding: var(--space-12) var(--space-4);
}

.table-loading .spinner-border {
    width: 2.5rem;
    height: 2.5rem;
}

.table-loading p {
    margin-top: var(--space-4);
    color: var(--color-text-secondary);
}

/* === Data Table Enhancements === */

.dataTables_wrapper .dataTables_processing {
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    box-shadow: var(--shadow-md);
}

/* === Link Underline Animation === */

.animated-underline {
    position: relative;
    text-decoration: none;
}

.animated-underline::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -2px;
    left: 0;
    background-color: currentColor;
    transition: width 0.2s ease;
}

.animated-underline:hover::after {
    width: 100%;
}