/* 
 * Invisalign Super Pillar CSS Namespace: .inv- 
 */
:root {
    --inv-primary: #0891b2;    /* Orthodontic Teal */
    --inv-primary-dark: #0e7490;
    --inv-accent: #f97316;     /* Smile Coral */
    --inv-accent-hover: #ea580c;
    --inv-green: #22c55e;      /* WhatsApp Green */
    --inv-green-dark: #16a34a;
    --inv-bg-light: #f0fdfa;   /* Light cyan background */
    --inv-dark: #0f172a;       /* Dark Navy */
    --inv-text-dark: #0f172a;
    --inv-text-muted: #475569;
    --inv-border: #e2e8f0;
    --inv-card-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --inv-card-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

body.inv-page {
    background-color: #f8fafc;
    overflow-x: hidden;
}

/* Scope inv typography ONLY to content area — do NOT touch nav/header */
.inv-hero,
.inv-content,
.inv-sidebar,
.inv-bottom-cta,
.inv-stats-bar {
    color: var(--inv-text-dark);
}

/* Base Utilities */
.inv-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}
.inv-section {
    padding: 60px 0;
}
.inv-section-alt {
    background-color: var(--inv-bg-light);
}
.inv-text-center { text-align: center; }
.inv-mb-2 { margin-bottom: 8px; }
.inv-mb-4 { margin-bottom: 16px; }
.inv-mb-6 { margin-bottom: 24px; }
.inv-mb-8 { margin-bottom: 32px; }
.inv-mt-4 { margin-top: 16px; }
.inv-mt-8 { margin-top: 32px; }
.inv-bold { font-weight: 700; }
.inv-text-primary { color: var(--inv-primary); }

/* Buttons */
.inv-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s ease;
    border: none;
    cursor: pointer;
    line-height: 1.5;
}
.inv-btn svg { width: 20px; height: 20px; margin-right: 8px; }
.inv-btn-primary {
    background-color: var(--inv-primary);
    color: white !important;
}
.inv-btn-primary:hover {
    background-color: var(--inv-primary-dark);
    transform: translateY(-1px);
}
.inv-btn-accent {
    background-color: var(--inv-accent);
    color: white !important;
}
.inv-btn-accent:hover {
    background-color: var(--inv-accent-hover);
}
.inv-btn-wa {
    background-color: var(--inv-green);
    color: white !important;
}
.inv-btn-wa:hover {
    background-color: var(--inv-green-dark);
}
.inv-btn-outline {
    background-color: transparent;
    border: 2px solid var(--inv-primary);
    color: var(--inv-primary) !important;
}
.inv-btn-outline:hover {
    background-color: var(--inv-primary);
    color: white !important;
}
.inv-btn-full { width: 100%; }

/* Grid Layouts */
.inv-main-layout {
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: 40px;
    padding: 40px 0;
    align-items: start;
}
.inv-content { min-width: 0; }

/* Hero Section */
.inv-hero {
    background: linear-gradient(to right, rgba(8, 145, 178, 0.9), rgba(8, 145, 178, 0.7)), url('/wp-content/uploads/2026/05/inv-hero.png') center/cover no-repeat;
    color: white;
    padding: 30px 20px 80px 20px;
    margin-bottom: 0;
    box-sizing: border-box; /* Prevent padding from expanding beyond viewport */
    overflow-x: hidden;     /* Guard rail against child element overflow */
}

.inv-breadcrumb {
    max-width: 1200px;
    margin: 0 auto 40px auto;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
    text-align: left;
}
.inv-breadcrumb a {
    color: white;
    text-decoration: none;
}
.inv-breadcrumb a:hover {
    text-decoration: underline;
}
.inv-breadcrumb span {
    margin: 0 10px;
    font-size: 1.1rem;
    vertical-align: middle;
}
.inv-hero-inner {
    max-width: 800px;
    width: 100%;           /* Ensure it respects parent width on mobile */
    margin: 0 auto;
    text-align: center;
    box-sizing: border-box;
}

.inv-hero h1 {
    color: white;
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 24px;
}
.inv-hero-kicker {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 20px;
    backdrop-filter: blur(4px);
}
.inv-hero-lead {
    font-size: 1.2rem;
    line-height: 1.6;
    margin-bottom: 32px;
    opacity: 0.95;
}
.inv-hero-trust {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
    margin-bottom: 32px;
    font-size: 0.9rem;
    font-weight: 500;
}
.inv-hero-trust-item {
    display: flex;
    align-items: center;
}
.inv-hero-trust-item svg {
    color: var(--inv-green);
    width: 18px;
    height: 18px;
    margin-right: 6px;
}
.inv-hero-ctas {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
}
.inv-stats-bar {
    background-color: var(--inv-dark);
    color: white;
    padding: 16px 0;
}
.inv-stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    text-align: center;
    gap: 20px;
}
.inv-stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--inv-accent);
}
.inv-stat-label {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    opacity: 0.8;
}

/* AIO Box */
.inv-aio-box {
    background-color: #f1f5f9;
    border-left: 4px solid var(--inv-primary);
    padding: 20px 24px;
    border-radius: 0 8px 8px 0;
    margin: 32px 0;
}
.inv-aio-box h3 {
    margin-top: 0;
    font-size: 1.1rem;
    color: var(--inv-text-dark);
    display: flex;
    align-items: center;
}
.inv-aio-box h3 svg {
    color: var(--inv-primary);
    margin-right: 8px;
}
.inv-aio-box p:last-child { margin-bottom: 0; }

/* Suitability Checker Widget */
.inv-checker-widget {
    background: white;
    border-radius: 12px;
    box-shadow: var(--inv-card-shadow);
    padding: 32px;
    margin: 40px 0;
    border: 1px solid var(--inv-border);
}
.inv-checker-widget h3 {
    text-align: center;
    margin-top: 0;
    margin-bottom: 24px;
}
.inv-checker-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 32px;
}
.inv-check-item {
    display: flex;
    align-items: flex-start;
    padding: 12px;
    background: var(--inv-bg-light);
    border-radius: 8px;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all 0.2s;
}
.inv-check-item:hover { border-color: rgba(8, 145, 178, 0.3); }
.inv-check-item input {
    margin-top: 4px;
    margin-right: 12px;
    width: 18px;
    height: 18px;
    accent-color: var(--inv-primary);
    cursor: pointer;
}
.inv-check-label {
    font-weight: 500;
    color: var(--inv-text-dark);
    cursor: pointer;
}
.inv-checker-result {
    display: none;
    padding: 20px;
    border-radius: 8px;
    text-align: center;
    background: #f8fafc;
    border: 1px solid var(--inv-border);
}
.inv-checker-result.active { display: block; animation: invFadeIn 0.5s ease; }
.inv-checker-result h4 { margin-top: 0; margin-bottom: 12px; font-size: 1.2rem; }
.inv-result-strong h4 { color: var(--inv-green-dark); }
.inv-result-moderate h4 { color: var(--inv-primary); }
.inv-result-consult h4 { color: var(--inv-accent); }

/* Benefits Grid */
.inv-benefits-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 32px;
}
.inv-benefit-card {
    background: white;
    padding: 24px;
    border-radius: 12px;
    box-shadow: var(--inv-card-shadow);
    text-align: center;
    transition: transform 0.2s;
    border: 1px solid var(--inv-border);
}
.inv-benefit-card:hover { transform: translateY(-5px); box-shadow: var(--inv-card-hover); }
.inv-benefit-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}
.inv-benefit-card h4 {
    margin-top: 0;
    margin-bottom: 12px;
    font-size: 1.1rem;
    color: var(--inv-primary-dark);
}
.inv-benefit-card p {
    font-size: 0.95rem;
    color: var(--inv-text-muted);
    margin: 0;
}

/* Workflow Timeline */
.inv-timeline {
    position: relative;
    max-width: 800px;
    margin: 40px auto;
}
.inv-timeline::before {
    content: '';
    position: absolute;
    top: 0; left: 24px;
    height: 100%; width: 4px;
    background: var(--inv-bg-light);
    border-radius: 2px;
}
.inv-timeline-step {
    position: relative;
    padding-left: 60px;
    margin-bottom: 32px;
}
.inv-timeline-step:last-child { margin-bottom: 0; }
.inv-step-marker {
    position: absolute;
    left: 10px; top: 0;
    width: 32px; height: 32px;
    border-radius: 50%;
    background: var(--inv-primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    z-index: 2;
}
.inv-timeline-content {
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: var(--inv-card-shadow);
    border: 1px solid var(--inv-border);
}
.inv-timeline-content h4 { margin-top: 0; margin-bottom: 8px; color: var(--inv-primary-dark); }
.inv-timeline-content p { margin: 0; font-size: 0.95rem; }

/* Comparison Tables */
.inv-table-wrapper {
    overflow-x: auto;
    margin: 32px 0;
    border-radius: 12px;
    box-shadow: var(--inv-card-shadow);
    border: 1px solid var(--inv-border);
}
.inv-table {
    width: 100%;
    border-collapse: collapse;
    background: white;
}
.inv-table th, .inv-table td {
    padding: 16px;
    text-align: left;
    border-bottom: 1px solid var(--inv-border);
}
.inv-table th {
    background-color: var(--inv-bg-light);
    font-weight: 700;
    color: var(--inv-primary-dark);
}
.inv-table tr:last-child td { border-bottom: none; }
.inv-table-feature { font-weight: 600; color: var(--inv-text-dark); background-color: #f8fafc; }
.inv-table-highlight { background-color: rgba(8, 145, 178, 0.05); }

/* Conditions Grid */
.inv-conditions-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin: 32px 0;
}
.inv-condition-card {
    display: flex;
    background: white;
    border-radius: 8px;
    padding: 20px;
    box-shadow: var(--inv-card-shadow);
    border: 1px solid var(--inv-border);
    align-items: center;
}
.inv-condition-icon {
    width: 60px; height: 60px;
    background: var(--inv-bg-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-right: 20px;
    flex-shrink: 0;
}
.inv-condition-info h4 { margin-top: 0; margin-bottom: 4px; }
.inv-condition-info p { margin: 0; font-size: 0.9rem; color: var(--inv-text-muted); margin-bottom: 8px; }
.inv-suitability {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 600;
}
.inv-suit-good { background: #dcfce7; color: #166534; }
.inv-suit-consult { background: #fef9c3; color: #854d0e; }
.inv-suit-braces { background: #fee2e2; color: #991b1b; }

/* Image Blocks */
.inv-image-block {
    margin: 32px 0;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--inv-card-shadow);
}
.inv-image-block img {
    width: 100%;
    height: auto;
    display: block;
}
.inv-image-caption {
    background: white;
    padding: 12px;
    text-align: center;
    font-size: 0.9rem;
    color: var(--inv-text-muted);
    border-top: 1px solid var(--inv-border);
}

/* Before & After Gallery */
.inv-ba-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin: 32px 0;
}
.inv-ba-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--inv-card-shadow);
    border: 1px solid var(--inv-border);
}
.inv-ba-image-wrap { position: relative; }
.inv-ba-card img { width: 100%; display: block; }
.inv-ba-info { padding: 20px; }
.inv-ba-info h4 { margin-top: 0; margin-bottom: 8px; }
.inv-ba-meta { display: flex; justify-content: space-between; font-size: 0.9rem; color: var(--inv-text-muted); }

/* Trust Signals */
.inv-trust-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin: 32px 0;
}
.inv-trust-card {
    display: flex;
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: var(--inv-card-shadow);
    border: 1px solid var(--inv-border);
}
.inv-trust-icon {
    width: 48px; height: 48px;
    background: var(--inv-primary);
    color: white;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-right: 16px;
    flex-shrink: 0;
}
.inv-trust-info h4 { margin-top: 0; margin-bottom: 4px; }
.inv-trust-info p { margin: 0; font-size: 0.9rem; color: var(--inv-text-muted); }

/* Dr Cuong Profile */
.inv-doc-profile {
    display: flex;
    background: white;
    border-radius: 12px;
    padding: 32px;
    box-shadow: var(--inv-card-shadow);
    margin: 40px 0;
    align-items: center;
    border: 1px solid var(--inv-border);
}
.inv-doc-img {
    width: 150px; height: 150px;
    border-radius: 50%;
    object-fit: cover; /* prevents distortion */
    object-position: top center;
    margin-right: 32px;
    border: 4px solid var(--inv-bg-light);
    flex-shrink: 0;
}
.inv-doc-info h3 { margin-top: 0; margin-bottom: 8px; }
.inv-doc-creds {
    list-style: none; padding: 0; margin: 0 0 16px 0;
}
.inv-doc-creds li {
    display: flex; align-items: center; margin-bottom: 6px; font-weight: 500;
}
.inv-doc-creds svg { color: var(--inv-primary); margin-right: 8px; width: 18px; height: 18px; }

/* Testimonials */
.inv-review-card {
    background: white;
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 20px;
    box-shadow: var(--inv-card-shadow);
    border: 1px solid var(--inv-border);
    position: relative;
}
.inv-review-stars { color: #f59e0b; margin-bottom: 12px; font-size: 1.2rem; letter-spacing: 2px; }
.inv-review-text { font-size: 1.05rem; font-style: italic; line-height: 1.6; margin-bottom: 16px; }
.inv-review-author { font-weight: 600; color: var(--inv-text-dark); }
.inv-review-meta { font-size: 0.85rem; color: var(--inv-text-muted); }

/* FAQ Accordion */
.inv-faq-container { margin: 40px 0; }
.inv-faq-category { margin-bottom: 32px; }
.inv-faq-category-title {
    font-size: 1.3rem;
    color: var(--inv-primary-dark);
    margin-bottom: 16px;
    border-bottom: 2px solid var(--inv-bg-light);
    padding-bottom: 8px;
}
.inv-faq-item {
    background: white;
    border: 1px solid var(--inv-border);
    border-radius: 8px;
    margin-bottom: 12px;
    box-shadow: 0 1px 2px rgba(0,0,0,0.05);
}
.inv-faq-question {
    padding: 16px 20px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--inv-text-dark);
}
.inv-faq-question:hover { color: var(--inv-primary); background: #f8fafc; }
.inv-faq-icon {
    transition: transform 0.3s;
    color: var(--inv-primary);
}
.inv-faq-answer {
    padding: 0 20px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out, padding 0.3s ease;
    background: white;
}
.inv-faq-item.active .inv-faq-answer {
    padding: 0 20px 20px 20px;
}
.inv-faq-item.active .inv-faq-icon {
    transform: rotate(180deg);
}

/* Related Treatments Grid */
.inv-related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin: 32px 0;
}
.inv-related-card {
    background: white;
    border-radius: 8px;
    padding: 20px;
    text-align: center;
    text-decoration: none;
    color: inherit;
    border: 1px solid var(--inv-border);
    transition: all 0.2s;
    display: block;
}
.inv-related-card:hover {
    border-color: var(--inv-primary);
    transform: translateY(-3px);
    box-shadow: var(--inv-card-shadow);
}
.inv-related-card h4 { margin: 0 0 8px 0; color: var(--inv-primary-dark); }
.inv-related-card p { margin: 0; font-size: 0.9rem; color: var(--inv-text-muted); }

/* Sidebar — matches emergency.css pattern exactly */
#inv-sidebar {
    position: sticky;
    top: 100px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}
.inv-widget {
    background: white;
    border-radius: 12px;
    padding: 24px;
    box-shadow: var(--inv-card-shadow);
    border: 1px solid var(--inv-border);
}
.inv-widget-wa {
    border-top: 4px solid var(--inv-green);
}
.inv-widget-wa h3 { margin-top: 0; color: var(--inv-green-dark); display: flex; align-items: center; }
.inv-widget-wa h3 svg { margin-right: 8px; }
.inv-widget-price h3 { margin-top: 0; margin-bottom: 16px; border-bottom: 1px solid var(--inv-border); padding-bottom: 12px;}
.inv-price-list { list-style: none; padding: 0; margin: 0 0 16px 0; }
.inv-price-list li { display: flex; justify-content: space-between; margin-bottom: 12px; border-bottom: 1px dashed var(--inv-border); padding-bottom: 4px;}
.inv-price-list li span:last-child { font-weight: 700; color: var(--inv-primary); }

.inv-toc { list-style: none; padding: 0; margin: 0; }
.inv-toc li { margin-bottom: 8px; }
.inv-toc a {
    color: var(--inv-text-muted);
    text-decoration: none;
    font-size: 0.95rem;
    display: block;
    padding: 4px 8px;
    border-radius: 4px;
    transition: all 0.2s;
}
.inv-toc a:hover, .inv-toc a.active {
    background: var(--inv-bg-light);
    color: var(--inv-primary);
    font-weight: 600;
}

/* Bottom CTA block */
.inv-bottom-cta {
    background: var(--inv-dark);
    color: white;
    padding: 60px 0;
    margin-top: 60px;
}
.inv-cta-grid {
    display: grid;
    grid-template-columns: 3fr 2fr;
    gap: 40px;
    align-items: center;
}
.inv-cta-content h2 { color: white; margin-top: 0; font-size: 2.2rem; }
.inv-cta-content p { font-size: 1.1rem; line-height: 1.6; opacity: 0.9; margin-bottom: 24px; }
.inv-cta-card {
    background: white;
    padding: 32px;
    border-radius: 12px;
    text-align: center;
    color: var(--inv-text-dark);
}
.inv-cta-card h3 { margin-top: 0; color: var(--inv-text-dark); }
.inv-cta-card .inv-btn { width: 100%; margin-bottom: 12px; }

/* Animations */
@keyframes invFadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Mobile Responsive */
@media (max-width: 992px) {
    .inv-main-layout { grid-template-columns: 1fr; }
    #inv-sidebar { position: static; top: auto; order: 99; }
    .inv-hero { padding: 60px 20px; }
    .inv-hero h1 { font-size: 2.2rem; }
    .inv-stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
    .inv-cta-grid { grid-template-columns: 1fr; }
    .inv-benefits-grid, .inv-related-grid { grid-template-columns: repeat(2, 1fr); }
    .inv-ba-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .inv-checker-grid, .inv-ba-grid, .inv-trust-grid, .inv-conditions-grid { grid-template-columns: 1fr; }
    .inv-benefits-grid, .inv-related-grid { grid-template-columns: 1fr; }
    .inv-doc-profile { flex-direction: column; text-align: center; }
    .inv-doc-img { margin-right: 0; margin-bottom: 20px; }
    .inv-hero-ctas { flex-direction: column; width: 100%; }
    .inv-hero-ctas .inv-btn { width: 100%; box-sizing: border-box; }
    /* Remove negative margin — it was causing content bleed on narrow phones */
    .inv-table-wrapper { margin: 20px 0; border-radius: 8px; }
}

/* Extra small phones (≤480px) */
@media (max-width: 480px) {
    .inv-hero { padding: 40px 16px 60px 16px; }
    .inv-hero h1 { font-size: 1.75rem; }
    .inv-hero-kicker { font-size: 0.8rem; padding: 5px 12px; }
    .inv-hero-lead { font-size: 1rem; }
    .inv-container { padding: 0 16px; }
    .inv-stats-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
}


/* Mobile Sticky Bottom CTA */
.inv-mobile-cta {
    position: fixed;
    bottom: 0; left: 0; right: 0;
    background: white;
    padding: 12px 20px;
    box-shadow: 0 -4px 10px rgba(0,0,0,0.1);
    z-index: 100;
    display: none;
    transform: translateY(100%);
    transition: transform 0.3s;
}
.inv-mobile-cta.visible { transform: translateY(0); }
@media (max-width: 992px) {
    .inv-mobile-cta { display: flex; gap: 12px; }
    .inv-mobile-cta .inv-btn { flex: 1; padding: 10px; font-size: 0.9rem; }
    body.inv-page { padding-bottom: 70px; } /* Space for sticky CTA */
}