/* ==========================================================================
   TAREQDESIGN LENS - PURE VANILLA CSS
   Namespaced strictly with .td-lens- to avoid any framework conflicts
   ========================================================================== */

/* --- CSS Variables & Theming --- */
:root {
    /* Light Theme (Default) */
    --td-lens-bg: rgba(255, 255, 255, 0.85);
    --td-lens-backdrop: blur(20px) saturate(180%);
    --td-lens-border: rgba(0, 0, 0, 0.08);
    --td-lens-text: #1a1a1a;
    --td-lens-text-muted: #666;
    --td-lens-accent: #2dd4bf;
    --td-lens-btn-bg: rgba(0, 0, 0, 0.05);
    --td-lens-btn-hover: rgba(0, 0, 0, 0.1);
    --td-lens-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    
    /* Layout */
    --td-lens-panel-width: 340px;
    --td-lens-radius: 20px;
    --td-lens-font: system-ui, -apple-system, sans-serif;
    
    /* Transition Timings (Spring-like) */
    --td-lens-spring: cubic-bezier(0.175, 0.885, 0.32, 1.15);
    --td-lens-ease: cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Theme */
body.td-lens-theme-dark {
    background-color: #020617 !important; /* Tailwind slate-950 */
    color: #f8fafc !important; /* Tailwind slate-50 */
    --td-lens-bg: rgba(20, 20, 20, 0.85);
    --td-lens-border: rgba(255, 255, 255, 0.1);
    --td-lens-text: #f5f5f5;
    --td-lens-text-muted: #a0a0a0;
    --td-lens-btn-bg: rgba(255, 255, 255, 0.08);
    --td-lens-btn-hover: rgba(255, 255, 255, 0.15);
    --td-lens-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
}

/* Paper Theme */
body.td-lens-theme-paper {
    background-color: #f4eee0 !important;
    color: #4a4036 !important;
    --td-lens-bg: rgba(244, 238, 224, 0.95);
    --td-lens-border: rgba(139, 115, 85, 0.15);
    --td-lens-text: #4a4036;
    --td-lens-text-muted: #8b7d6b;
    --td-lens-btn-bg: rgba(139, 115, 85, 0.1);
    --td-lens-btn-hover: rgba(139, 115, 85, 0.2);
    --td-lens-accent: #b85b4d;
}

body.td-lens-theme-paper h1, body.td-lens-theme-paper h2, body.td-lens-theme-paper h3, body.td-lens-theme-paper p {
    color: #4a4036 !important;
}

/* --- Floating Action Button (FAB) & Progress Ring --- */
.td-lens-fab-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 68px;
    height: 68px;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
}

[dir="rtl"] .td-lens-fab-container {
    right: 24px !important;
    left: auto !important;
}



.td-lens-progress-ring {
    position: absolute;
    top: 0;
    left: 0;
    transform: rotate(-90deg);
    pointer-events: none;
}

.td-lens-progress-ring__circle {
    transition: stroke-dashoffset 0.3s ease-out;
}

.td-lens-progress-bg {
    color: var(--td-lens-border);
}

.td-lens-progress-value {
    color: var(--td-lens-accent);
}

.td-lens-fab {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: var(--td-lens-bg);
    backdrop-filter: var(--td-lens-backdrop);
    -webkit-backdrop-filter: var(--td-lens-backdrop);
    border: 1px solid var(--td-lens-border);
    color: var(--td-lens-text);
    box-shadow: var(--td-lens-shadow);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: transform 0.3s var(--td-lens-spring), box-shadow 0.3s var(--td-lens-ease);
    padding: 0;
    position: relative;
    z-index: 2;
}

.td-lens-fab:hover {
    transform: scale(1.08);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

/* --- Main Panel --- */
.td-lens-panel {
    position: fixed;
    bottom: 100px;
    right: 30px;
    width: var(--td-lens-panel-width);
    max-height: calc(100vh - 140px);
    background: var(--td-lens-bg);
    backdrop-filter: var(--td-lens-backdrop);
    -webkit-backdrop-filter: var(--td-lens-backdrop);
    border: 1px solid var(--td-lens-border);
    border-radius: var(--td-lens-radius);
    box-shadow: var(--td-lens-shadow);
    z-index: 10000;
    display: flex;
    flex-direction: column;
    font-family: var(--td-lens-font);
    color: var(--td-lens-text);
    
    /* Animation state */
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px) scale(0.95);
    transform-origin: bottom right;
    transition: opacity 0.3s var(--td-lens-ease), transform 0.4s var(--td-lens-spring), visibility 0.4s;
    overflow: hidden;
}

[dir="rtl"] .td-lens-panel {
    right: 30px !important;
    left: auto !important;
    transform-origin: bottom right !important;
}

.td-lens-panel.td-lens-open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

/* --- Panel Header --- */
.td-lens-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px;
    border-bottom: 1px solid var(--td-lens-border);
}

.td-lens-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    font-size: 1.1rem;
}

.td-lens-close {
    background: transparent;
    border: none;
    color: var(--td-lens-text-muted);
    cursor: pointer;
    padding: 4px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s, color 0.2s;
}

.td-lens-close:hover {
    background: var(--td-lens-btn-bg);
    color: var(--td-lens-text);
}

/* --- Panel Content --- */
.td-lens-content {
    padding: 20px;
    overflow-y: auto;
    flex-grow: 1;
    scrollbar-width: thin;
    scrollbar-color: var(--td-lens-border) transparent;
}

.td-lens-content::-webkit-scrollbar {
    width: 6px;
}
.td-lens-content::-webkit-scrollbar-thumb {
    background-color: var(--td-lens-border);
    border-radius: 10px;
}

/* --- Sections --- */
.td-lens-section {
    margin-bottom: 24px;
}
.td-lens-section:last-child {
    margin-bottom: 0;
}

.td-lens-section-title {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--td-lens-text-muted);
    margin: 0 0 12px 0;
    font-weight: 600;
}

/* --- Buttons --- */
.td-lens-button-group {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.td-lens-btn {
    background: var(--td-lens-btn-bg);
    border: 1px solid transparent;
    color: var(--td-lens-text);
    padding: 8px 14px;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    font-family: inherit;
    transition: background 0.2s, transform 0.1s;
}

.td-lens-btn:hover {
    background: var(--td-lens-btn-hover);
}
.td-lens-btn:active {
    transform: scale(0.96);
}

.td-lens-btn.td-lens-active {
    background: var(--td-lens-text);
    color: var(--td-lens-bg);
}

.td-lens-btn-outline {
    background: transparent;
    border: 1px solid var(--td-lens-border);
}
.td-lens-btn-outline:hover {
    border-color: var(--td-lens-text-muted);
}

.td-lens-btn-text {
    background: transparent;
    border: none;
    color: var(--td-lens-text-muted);
    font-size: 0.85rem;
    cursor: pointer;
    padding: 8px 12px;
    border-radius: 8px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: background 0.2s, color 0.2s;
}
.td-lens-btn-text:hover {
    background: var(--td-lens-btn-bg);
    color: var(--td-lens-text);
}

/* --- Controls --- */
.td-lens-control-group {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}
.td-lens-control-group label {
    font-size: 0.9rem;
    color: var(--td-lens-text);
}
.td-lens-slider {
    width: 60%;
    accent-color: var(--td-lens-text);
}

/* --- Stats --- */
.td-lens-journey-stats {
    display: flex;
    justify-content: space-between;
    background: var(--td-lens-btn-bg);
    padding: 12px;
    border-radius: 12px;
    margin-bottom: 12px;
}
.td-lens-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
}
.td-lens-stat-value {
    font-size: 1.2rem;
    font-weight: 700;
}
.td-lens-stat-label {
    font-size: 0.75rem;
    color: var(--td-lens-text-muted);
}

.td-lens-chapter-nav {
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.td-lens-chapter-label {
    font-size: 0.75rem;
    color: var(--td-lens-text-muted);
}
.td-lens-chapter-current {
    font-size: 0.95rem;
    font-weight: 600;
}

/* --- AI Section --- */
.td-lens-ai-title {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--td-lens-accent);
}
.td-lens-ai-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}
.td-lens-ai-response-container {
    margin-top: 12px;
    padding: 12px;
    background: var(--td-lens-btn-bg);
    border-radius: 8px;
    font-size: 0.9rem;
    line-height: 1.5;
    position: relative;
}
.td-lens-btn-close-sm {
    position: absolute;
    top: 6px;
    right: 6px;
    background: transparent;
    border: none;
    color: var(--td-lens-text-muted);
    font-size: 0.75rem;
    cursor: pointer;
}

/* --- Annotations (Design Lens) --- */
#td-lens-annotation-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none; /* Let clicks pass through */
    z-index: 9998;
}

.td-lens-annotation {
    position: absolute;
    background: var(--td-lens-bg);
    backdrop-filter: var(--td-lens-backdrop);
    -webkit-backdrop-filter: var(--td-lens-backdrop);
    border: 1px solid var(--td-lens-border);
    color: var(--td-lens-text);
    padding: 12px 16px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    font-family: var(--td-lens-font);
    font-size: 0.85rem;
    max-width: 250px;
    line-height: 1.4;
    pointer-events: auto;
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.3s ease, transform 0.3s var(--td-lens-spring);
}
.td-lens-annotation.td-lens-visible {
    opacity: 1;
    transform: translateY(0);
}
.td-lens-annotation-title {
    font-weight: 700;
    display: block;
    margin-bottom: 4px;
    color: var(--td-lens-accent);
}

/* --- Mobile Responsiveness --- */
@media (max-width: 768px) {
    .td-lens-panel {
        bottom: 0;
        right: 0;
        left: 0;
        width: 100%;
        max-height: 80vh;
        border-radius: 24px 24px 0 0;
        transform: translateY(100%);
    }
    
    [dir="rtl"] .td-lens-panel {
        left: 0;
        transform-origin: bottom center;
    }

    .td-lens-panel.td-lens-open {
        transform: translateY(0);
    }
}

/* Respect Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    .td-lens-panel, .td-lens-fab, .td-lens-annotation {
        transition: opacity 0.2s ease !important;
        transform: none !important;
    }
}

/* --- Body Classes for Reading Modes --- */
/* Managed by Lens.js */
body.td-lens-mode-focus .lg\:col-span-4,
body.td-lens-mode-focus .blog-post-share-wrap,
body.td-lens-mode-focus .site-footer {
    display: none !important;
}

body.td-lens-mode-focus .lg\:col-span-8,
body.td-lens-mode-focus .col-lg-8,
body.td-lens-mode-focus .article-content {
    grid-column: span 12 / span 12 !important;
    max-width: var(--td-lens-content-width, 800px) !important;
    flex: 0 0 100% !important;
    width: 100% !important;
    margin: 0 auto !important;
}

/* --- Layout Variables (Font Size & Width) --- */
.lg\:col-span-8,
.col-lg-8,
.article-content {
    max-width: var(--td-lens-content-width, 100%);
    transition: max-width 0.3s ease;
}

.lg\:col-span-8 p, .col-lg-8 p, .article-content p,
.lg\:col-span-8 li, .col-lg-8 li, .article-content li,
.lg\:col-span-8 a, .col-lg-8 a, .article-content a,
.lg\:col-span-8 blockquote, .col-lg-8 blockquote, .article-content blockquote {
    font-size: var(--td-lens-font-size, 18px) !important;
    line-height: 1.8 !important;
    transition: font-size 0.2s ease;
}

.lg\:col-span-8 h2, .col-lg-8 h2, .article-content h2 {
    font-size: calc(var(--td-lens-font-size, 18px) * 1.5) !important;
    transition: font-size 0.2s ease;
}

.lg\:col-span-8 h3, .col-lg-8 h3, .article-content h3 {
    font-size: calc(var(--td-lens-font-size, 18px) * 1.25) !important;
    transition: font-size 0.2s ease;
}