/* Progressive Enhancement CSS */
/* Mobile navbar toggle fallback */
.navbar-toggle-checkbox {
    display: none;
}

@media (max-width: 991.98px) {
    /* Show checkbox-based toggle when JS is disabled */
    .navbar-toggle-checkbox:not([style*="display: none"]) {
        display: none;
    }

    .navbar-toggle-checkbox:checked ~ .navbar-collapse {
        display: block !important;
    }

    .navbar-toggler {
        cursor: pointer;
    }
}

/* Dropdown fallbacks */
.nav-dropdown-fallback {
    position: relative;
}

.nav-dropdown-fallback summary {
    list-style: none;
    cursor: pointer;
    padding: 0.5rem 1rem;
    text-decoration: none;
    transition: color .15s ease-in-out;
}

.nav-dropdown-fallback summary::-webkit-details-marker {
    display: none;
}

.nav-dropdown-fallback[open] .dropdown-menu {
    display: block;
    position: absolute;
    top: 100%;
    left: 0;
    z-index: 1000;
    min-width: 10rem;
    border: 1px solid rgba(0,0,0,.15);
    border-radius: 0.375rem;
    box-shadow: 0 0.5rem 1rem rgba(0,0,0,.175);
}

/* Hide fallback elements when JS is available */
.js .nav-dropdown-fallback {
    display: none;
}

.js .navbar-toggle-checkbox {
    display: none !important;
}

/* Hide JS-only elements when JS is not available */
.js-only {
    display: none;
}

.js .js-only {
    display: revert;
}

.js .btn-close.js-only {
    display: revert;
}

/* Iframe modal styles */
.iframe-modal {
    width: 100%;
    height: 70vh;
    border: none;
}

/* Client logo styles */
.client-logo {
    max-width: 64px;
    max-height: 64px;
}

/* Icon preview styles */
.icon-preview {
    font-size: 1.5rem;
}

/* Inline form styles */
.inline-form {
    display: inline;
}

/* Markdown preview styles */
.markdown-preview-content {
    min-height: 100px;
}

/* Dark mode enhancements for components that need special handling */
@media (prefers-color-scheme: dark) {
    /* Markdown preview dark theme */
    .markdown-preview-content.bg-light {
        background-color: var(--bs-secondary-bg) !important;
        border-color: var(--bs-border-color) !important;
    }

    /* Icon picker modal dark theme */
    .modal-content {
        background-color: var(--bs-body-bg);
        border-color: var(--bs-border-color);
    }

    .modal-header {
        border-bottom-color: var(--bs-border-color);
    }

    .modal-footer {
        border-top-color: var(--bs-border-color);
    }

    /* Icon grid items */
    #icon-grid .col {
        color: var(--bs-body-color);
    }

    #icon-grid .col:hover {
        background-color: var(--bs-tertiary-bg);
        color: var(--bs-emphasis-color);
    }

    /* Form controls */
    .form-control {
        background-color: var(--bs-body-bg);
        border-color: var(--bs-border-color);
        color: var(--bs-body-color);
    }

    .form-control:focus {
        background-color: var(--bs-body-bg);
        border-color: var(--bs-primary-border-subtle);
        color: var(--bs-body-color);
    }

    /* Button variants for dark theme */
    .btn-light {
        --bs-btn-color: var(--bs-body-color);
        --bs-btn-bg: var(--bs-secondary-bg);
        --bs-btn-border-color: var(--bs-border-color);
        --bs-btn-hover-color: var(--bs-emphasis-color);
        --bs-btn-hover-bg: var(--bs-tertiary-bg);
        --bs-btn-hover-border-color: var(--bs-border-color);
        --bs-btn-active-color: var(--bs-emphasis-color);
        --bs-btn-active-bg: var(--bs-tertiary-bg);
        --bs-btn-active-border-color: var(--bs-border-color);
    }

    /* Input group text */
    .input-group-text {
        background-color: var(--bs-secondary-bg);
        border-color: var(--bs-border-color);
        color: var(--bs-body-color);
    }

    /* Reaction types */
    .reaction-group {
        border-color: var(--bs-border-color);
    }

    .reaction-counts .badge {
        background-color: var(--bs-secondary-bg) !important;
        border-color: var(--bs-border-color) !important;
        color: var(--bs-body-color) !important;
    }

    /* Microsub entries */
    .microsub-entry .reaction-type {
        background-color: var(--bs-tertiary-bg);
        border-color: var(--bs-border-color);
    }

    /* Modal close button for dark mode */
    .btn-close {
        filter: invert(1) grayscale(100%) brightness(200%);
    }
}

/* Reaction display styles */
.reactions {
    margin: 1rem 0;
}

.reaction-group {
    border: 1px solid #dee2e6;
    border-radius: 0.375rem;
    padding: 1rem;
    margin-bottom: 1rem;
}

.reaction-group h4 {
    margin-bottom: 0.75rem;
    font-weight: 600;
}

.reaction-counts .badge {
    font-size: 0.75rem;
    padding: 0.375rem 0.5rem;
}

.reaction-counts .badge:hover {
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    transition: all 0.2s ease-in-out;
}

.reply {
    border-left: 3px solid #0d6efd;
}

.reply .reply-content {
    font-size: 0.9rem;
    line-height: 1.4;
}

/* Microsub entry styles */
.microsub-entry {
    border-left: 4px solid transparent;
    transition: border-color 0.2s ease-in-out;
}

.microsub-entry[data-entry-type="entry"] {
    border-left-color: #6c757d;
}

.microsub-entry .reaction-type {
    background-color: #f8f9fa;
    border-radius: 0.25rem;
    padding: 0.25rem 0.5rem;
    margin: 0.25rem 0;
}

.microsub-entry .media-attachments img {
    border-radius: 0.375rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

/* Microformats2 semantic styling */
.h-entry {
    border-radius: 0.5rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.h-card {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.h-cite {
    border-left: 2px solid #e9ecef;
    padding-left: 0.75rem;
}

/* Accessibility improvements */
@media (prefers-reduced-motion: reduce) {
    .reaction-counts .badge:hover {
        transform: none;
        transition: none;
    }

    .microsub-entry {
        transition: none;
    }
}

/* Responsive reactions display */
@media (max-width: 768px) {
    .reaction-group {
        padding: 0.75rem;
    }

    .reaction-group h4 {
        font-size: 1rem;
    }

    .reactions ul {
        gap: 0.5rem !important;
    }

    .microsub-entry .media-attachments img {
        max-width: 150px !important;
        max-height: 150px !important;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .reaction-group {
        border-width: 2px;
    }

    .reaction-counts .badge {
        border-width: 2px;
        font-weight: bold;
    }

    .microsub-entry {
        border-left-width: 6px;
    }
}

/* Theme enhancement styles */
.theme-loading {
    position: relative;
    opacity: 0.7;
    pointer-events: none;
}

.theme-loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 20px;
    height: 20px;
    border: 2px solid #f3f3f3;
    border-top: 2px solid #0d6efd;
    border-radius: 50%;
    animation: theme-loading-spin 1s linear infinite;
    z-index: 1;
}

@keyframes theme-loading-spin {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

/* Theme preview controls - hide by default, show with JS */
.theme-preview-toggle {
    display: none !important;
}

.js .theme-preview-toggle {
    display: inline-block !important;
}

.js .no-js {
    display: none !important;
}