/* ==========================================================================
   💎 OptiClean - Premium Design System (CSS)
   ========================================================================== */

/* 1. Reset & Base Setup */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&family=Outfit:wght@400;600;700;800&display=swap');

:root {
    --color-primary-navy: #1B2A4A;
    --color-primary-mint: #7AE5C3;
    --color-mint-dark: #58C4A3;
    --color-mint-light: #EBFDF8;
    --color-dark-bg: #0B1325;
    --color-dark-card: #152238;
    --color-text-dark: #1E293B;
    --color-text-light: #F8FAFC;
    --color-text-muted: #64748B;
    --color-white: #FFFFFF;
    --color-border: #E2E8F0;
    
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    --shadow-premium: 0 20px 40px -15px rgba(27, 42, 74, 0.08);
    --shadow-hover: 0 30px 60px -15px rgba(27, 42, 74, 0.15);
    --border-radius-lg: 20px;
    --border-radius-md: 12px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    color: var(--color-text-dark);
    background-color: #FAFAFC;
    line-height: 1.6;
    overflow-x: hidden;
}

/* 2. Typography Rules */
h1, h2, h3, h4 {
    font-family: var(--font-heading);
    color: var(--color-primary-navy);
    font-weight: 700;
}

p {
    font-size: 1.05rem;
    color: var(--color-text-muted);
}

/* 3. Utility Components & Layout */
.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

.section {
    padding: 100px 0;
}

.section-title {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px auto;
}

.section-title h2 {
    font-size: 2.5rem;
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.section-title h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background-color: var(--color-primary-mint);
    margin: 10px auto 0 auto;
    border-radius: 2px;
}

.section-title p {
    font-size: 1.15rem;
}

/* 4. Beautiful Glassmorphic Header Navigation */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-bottom: 1px solid rgba(226, 232, 240, 0.8);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.02);
    transition: var(--transition-smooth);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 85px;
}

.logo-link {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.logo-img {
    height: 65px;
    width: auto;
    transition: var(--transition-smooth);
}

.why-points-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin-top: 40px;
}

@media (max-width: 768px) {
    .why-points-grid {
        grid-template-columns: 1fr;
    }
}

.nav-menu {
    display: flex;
    list-style: none;
    align-items: center;
    gap: 35px;
}

.nav-link {
    text-decoration: none;
    color: var(--color-primary-navy);
    font-weight: 500;
    font-size: 1rem;
    transition: var(--transition-smooth);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -6px;
    left: 0;
    background-color: var(--color-primary-mint);
    transition: var(--transition-smooth);
}

.nav-link:hover {
    color: var(--color-mint-dark);
}

.nav-link:hover::after {
    width: 100%;
}

/* 5. Premium Buttons */
.btn {
    display: inline-block;
    padding: 14px 28px;
    border-radius: 50px;
    font-family: var(--font-heading);
    font-weight: 600;
    text-decoration: none;
    text-align: center;
    cursor: pointer;
    transition: var(--transition-smooth);
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary-mint) 0%, var(--color-mint-dark) 100%);
    color: var(--color-primary-navy);
    box-shadow: 0 10px 20px -5px rgba(88, 196, 163, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 25px -5px rgba(88, 196, 163, 0.6);
}

.btn-secondary {
    background-color: var(--color-primary-navy);
    color: var(--color-text-light);
    box-shadow: 0 10px 20px -5px rgba(27, 42, 74, 0.3);
}

.btn-secondary:hover {
    transform: translateY(-3px);
    background-color: #2a3d66;
    box-shadow: 0 15px 25px -5px rgba(27, 42, 74, 0.4);
}

.btn-outline {
    background-color: transparent;
    color: var(--color-primary-navy);
    border: 2px solid var(--color-primary-navy);
}

.btn-outline:hover {
    background-color: var(--color-primary-navy);
    color: var(--color-white);
    transform: translateY(-3px);
}

/* 6. Stunning Hero Section */
.hero {
    padding: 180px 0 120px 0;
    background: radial-gradient(circle at 80% 20%, var(--color-mint-light) 0%, #FAFAFC 70%);
    position: relative;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    background-color: var(--color-white);
    padding: 8px 16px;
    border-radius: 50px;
    box-shadow: 0 4px 15px rgba(27, 42, 74, 0.04);
    margin-bottom: 25px;
    border: 1px solid rgba(88, 196, 163, 0.2);
}

.hero-badge i {
    color: var(--color-mint-dark);
    margin-right: 8px;
    font-size: 1.1rem;
}

.hero-badge span {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-primary-navy);
}

.hero-content h1 {
    font-size: 3.5rem;
    line-height: 1.15;
    margin-bottom: 20px;
    letter-spacing: -1px;
}

.hero-content h1 span {
    background: linear-gradient(135deg, var(--color-primary-navy) 40%, var(--color-mint-dark) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 35px;
    color: var(--color-text-muted);
}

.hero-actions {
    display: flex;
    gap: 15px;
}

.hero-image-wrapper {
    position: relative;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-premium);
    height: 480px;
    border: 8px solid var(--color-white);
    background-size: cover;
    background-position: center;
    transition: var(--transition-smooth);
}

.hero-image-wrapper:hover {
    transform: scale(1.02);
}

/* 7. Clinical Health Section (Why Deep Cleaning Matters) */
.why-section {
    background: linear-gradient(135deg, #FAFAFC 0%, var(--color-mint-light) 50%, #FAFAFC 100%);
    position: relative;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

/* Tips Slider / Carousel Styling */
.tips-slider-wrapper {
    margin-top: 60px;
    position: relative;
    width: 100%;
}

.tips-slider-container {
    overflow-x: auto;
    scroll-behavior: smooth;
    display: flex;
    gap: 25px;
    padding: 20px 5px 30px 5px;
    scrollbar-width: none; /* Hide scrollbar for Firefox */
}

.tips-slider-container::-webkit-scrollbar {
    display: none; /* Hide scrollbar for Chrome/Safari */
}

.tip-card {
    flex: 0 0 350px;
    background-color: var(--color-white);
    border-radius: var(--border-radius-md);
    padding: 30px;
    box-shadow: var(--shadow-premium);
    border: 1px solid var(--color-border);
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
}

.tip-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(88, 196, 163, 0.4);
}

.tip-card-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
}

.tip-card-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background-color: var(--color-mint-light);
    color: var(--color-mint-dark);
    font-size: 1.2rem;
    flex-shrink: 0;
}

.tip-card h4 {
    font-size: 1.15rem;
    color: var(--color-primary-navy);
}

.tip-card p {
    font-size: 0.95rem;
    color: var(--color-text-muted);
}

.slider-controls {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 20px;
}

.slider-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background-color: var(--color-white);
    color: var(--color-primary-navy);
    border: 1px solid var(--color-border);
    cursor: pointer;
    transition: var(--transition-smooth);
    box-shadow: 0 4px 10px rgba(0,0,0,0.03);
}

.slider-btn:hover {
    background-color: var(--color-primary-mint);
    border-color: var(--color-primary-mint);
    transform: scale(1.05);
}

.why-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 60px;
    align-items: center;
}

.why-content h3 {
    font-size: 2rem;
    margin-bottom: 20px;
    line-height: 1.3;
}

.why-content p {
    margin-bottom: 25px;
}

.why-points {
    list-style: none;
    margin-top: 30px;
}

.why-point {
    display: flex;
    align-items: flex-start;
    margin-bottom: 20px;
}

.why-point-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background-color: var(--color-mint-light);
    color: var(--color-mint-dark);
    margin-right: 20px;
    flex-shrink: 0;
    font-size: 1.2rem;
}

.why-point-text h4 {
    font-size: 1.15rem;
    margin-bottom: 5px;
}

.why-point-text p {
    font-size: 0.95rem;
}

/* 8. Interactive Services Section */
.services-section {
    background-color: #F4F6F9;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.service-card {
    background-color: var(--color-white);
    border-radius: var(--border-radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-premium);
    border: 1px solid var(--color-border);
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(88, 196, 163, 0.4);
}

.service-card-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    border-radius: var(--border-radius-md);
    background-color: var(--color-mint-light);
    color: var(--color-mint-dark);
    font-size: 1.8rem;
    margin-bottom: 25px;
}

.service-card h3 {
    font-size: 1.4rem;
    margin-bottom: 15px;
}

.service-card p {
    font-size: 0.95rem;
    margin-bottom: 25px;
    flex-grow: 1;
}

.service-features {
    list-style: none;
    margin-bottom: 30px;
    border-top: 1px solid var(--color-border);
    padding-top: 20px;
}

.service-features li {
    display: flex;
    align-items: center;
    font-size: 0.9rem;
    color: var(--color-text-muted);
    margin-bottom: 12px;
}

.service-features li i {
    color: var(--color-mint-dark);
    margin-right: 10px;
}

.service-card .btn {
    width: 100%;
}

/* 9. Premium Form Section */
.form-section {
    background: radial-gradient(circle at 10% 80%, var(--color-mint-light) 0%, var(--color-white) 80%);
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 60px;
    align-items: center;
}

.form-info-content h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.form-info-content p {
    margin-bottom: 30px;
}

.contact-channels {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.channel-card {
    display: flex;
    align-items: center;
    background-color: var(--color-white);
    padding: 20px;
    border-radius: var(--border-radius-md);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.02);
    border: 1px solid var(--color-border);
    text-decoration: none;
    transition: var(--transition-smooth);
}

.channel-card:hover {
    transform: translateX(5px);
    border-color: var(--color-primary-mint);
    box-shadow: var(--shadow-premium);
}

.channel-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background-color: #E6F4EA;
    color: #137333;
    font-size: 1.3rem;
    margin-right: 20px;
}

.channel-icon.phone {
    background-color: var(--color-mint-light);
    color: var(--color-mint-dark);
}

.channel-details h4 {
    font-size: 1.05rem;
    margin-bottom: 3px;
    color: var(--color-primary-navy);
}

.channel-details p {
    font-size: 0.9rem;
}

/* Glassmorphic Form Card */
.form-card {
    background: rgba(255, 255, 255, 0.9);
    border-radius: var(--border-radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-premium);
    border: 1px solid var(--color-border);
    backdrop-filter: blur(10px);
}

.form-card h3 {
    font-size: 1.8rem;
    margin-bottom: 10px;
}

.form-card > p {
    font-size: 0.95rem;
    margin-bottom: 30px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-primary-navy);
    margin-bottom: 8px;
}

.form-control {
    width: 100%;
    padding: 14px 20px;
    border-radius: var(--border-radius-md);
    border: 1px solid var(--color-border);
    font-family: var(--font-body);
    font-size: 1rem;
    background-color: var(--color-text-light);
    transition: var(--transition-smooth);
    color: var(--color-text-dark);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-mint-dark);
    background-color: var(--color-white);
    box-shadow: 0 0 0 4px rgba(88, 196, 163, 0.15);
}

textarea.form-control {
    resize: none;
    height: 110px;
}

.form-card .btn {
    width: 100%;
    margin-top: 10px;
}

/* 10. News & Tips Section */
.blog-section {
    background-color: #FAFAFC;
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.blog-card {
    background-color: var(--color-white);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-premium);
    border: 1px solid var(--color-border);
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
}

.blog-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(88, 196, 163, 0.2);
}

.blog-img-wrapper {
    height: 220px;
    background-size: cover;
    background-position: center;
    position: relative;
}

.blog-tag {
    position: absolute;
    top: 20px;
    left: 20px;
    background-color: var(--color-primary-navy);
    color: var(--color-text-light);
    padding: 6px 12px;
    border-radius: 30px;
    font-size: 0.8rem;
    font-weight: 600;
    font-family: var(--font-heading);
}

.blog-card-content {
    padding: 30px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.blog-date {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-bottom: 10px;
}

.blog-card-content h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
    line-height: 1.4;
    transition: var(--transition-smooth);
}

.blog-card-content h3:hover {
    color: var(--color-mint-dark);
}

.blog-card-content p {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    margin-bottom: 20px;
    flex-grow: 1;
}

.blog-read-more {
    text-decoration: none;
    color: var(--color-primary-navy);
    font-weight: 600;
    font-family: var(--font-heading);
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    transition: var(--transition-smooth);
}

.blog-read-more i {
    margin-left: 6px;
    font-size: 0.8rem;
    transition: var(--transition-smooth);
}

.blog-read-more:hover {
    color: var(--color-mint-dark);
}

.blog-read-more:hover i {
    transform: translateX(4px);
}

/* 11. Accordion FAQ Section */
.faq-section {
    background-color: var(--color-white);
}

.faq-wrapper {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid var(--color-border);
    padding: 24px 0;
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
}

.faq-question h3 {
    font-size: 1.2rem;
    color: var(--color-primary-navy);
    font-weight: 600;
    transition: var(--transition-smooth);
}

.faq-question:hover h3 {
    color: var(--color-mint-dark);
}

.faq-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background-color: var(--color-text-light);
    color: var(--color-primary-navy);
    transition: var(--transition-smooth);
    font-size: 0.8rem;
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
    background-color: var(--color-primary-mint);
    color: var(--color-primary-navy);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: var(--transition-smooth);
}

.faq-answer p {
    padding-top: 15px;
    font-size: 0.98rem;
    color: var(--color-text-muted);
}

.faq-item.active .faq-answer {
    max-height: 200px;
}

/* 12. Elegant Footer */
.footer {
    background-color: var(--color-dark-bg);
    color: var(--color-text-light);
    padding: 80px 0 30px 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    padding-bottom: 50px;
    margin-bottom: 30px;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.95rem;
    margin-top: 20px;
    margin-bottom: 25px;
    max-width: 300px;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--color-text-light);
    text-decoration: none;
    transition: var(--transition-smooth);
    font-size: 1.1rem;
}

.social-icon:hover {
    background-color: var(--color-primary-mint);
    color: var(--color-primary-navy);
    transform: translateY(-3px);
}

.footer-col h3 {
    color: var(--color-white);
    font-size: 1.15rem;
    margin-bottom: 25px;
    position: relative;
}

.footer-col h3::after {
    content: '';
    display: block;
    width: 30px;
    height: 3px;
    background-color: var(--color-primary-mint);
    margin-top: 8px;
    border-radius: 2px;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 15px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.65);
    text-decoration: none;
    font-size: 0.95rem;
    transition: var(--transition-smooth);
}

.footer-links a:hover {
    color: var(--color-primary-mint);
    padding-left: 5px;
}

.footer-info {
    list-style: none;
}

.footer-info li {
    display: flex;
    align-items: flex-start;
    color: rgba(255, 255, 255, 0.65);
    font-size: 0.95rem;
    margin-bottom: 18px;
}

.footer-info li i {
    color: var(--color-primary-mint);
    margin-right: 12px;
    font-size: 1.05rem;
    margin-top: 4px;
}

.footer-copyright {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: rgba(255, 255, 255, 0.45);
    font-size: 0.9rem;
}

/* 13. Responsive Breakpoints */
@media (max-width: 1024px) {
    .hero-content h1 {
        font-size: 2.8rem;
    }
    .services-grid, .blog-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .section {
        padding: 70px 0;
    }
    .hero {
        padding: 140px 0 80px 0;
    }
    .hero-grid, .why-grid, .services-grid, .form-grid, .blog-grid, .footer-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .hero-content {
        text-align: center;
    }
    .hero-badge {
        justify-content: center;
    }
    .hero-actions {
        justify-content: center;
        flex-direction: column;
    }
    .hero-image-wrapper {
        height: 320px;
    }
    .nav-menu {
        display: none; /* Can be toggled with JS mobile menu */
    }
    .footer-copyright {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
}

/* ==========================================================================
   💎 14. Before & After Interactive Slider (Versão 2)
   ========================================================================== */

.comparison-container {
    text-align: center;
    margin-bottom: 30px;
}

.slider-section-title {
    max-width: 700px;
    margin: 0 auto 40px auto;
}

.slider-section-title h3 {
    font-size: 2.2rem;
    margin-bottom: 12px;
}

.slider-section-title p {
    font-size: 1.05rem;
    color: var(--color-text-muted);
}

.comparison-slider-wrapper {
    position: relative;
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-premium);
    border: 8px solid var(--color-white);
    aspect-ratio: 16 / 9; /* Ensure fixed aspect ratio */
}

.comparison-slider {
    position: relative;
    width: 100%;
    height: 100%;
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    overflow: hidden;
}

.slider-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.before-image {
    width: 50%; /* Initial split width */
    z-index: 2;
    border-right: 1px solid transparent; /* Just to clear glitches */
}

.after-image {
    width: 100%;
    z-index: 1;
}

.slider-label {
    position: absolute;
    bottom: 20px;
    padding: 8px 16px;
    border-radius: 30px;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.85rem;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    color: var(--color-text-light);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    z-index: 10;
}

.label-before {
    left: 20px;
    background-color: rgba(27, 42, 74, 0.75);
}

.label-after {
    right: 20px;
    background-color: rgba(88, 196, 163, 0.75);
    color: var(--color-primary-navy);
}

.slider-handle {
    position: absolute;
    top: 0;
    left: 50%; /* Initial split */
    width: 4px;
    height: 100%;
    background-color: var(--color-white);
    transform: translateX(-50%);
    z-index: 5;
    cursor: ew-resize;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
}

.handle-line {
    width: 2px;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.5);
}

.handle-button {
    width: 50px;
    height: 50px;
    background-color: var(--color-white);
    color: var(--color-primary-navy);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 15px rgba(27, 42, 74, 0.2);
    cursor: ew-resize;
    font-size: 1.1rem;
    transition: transform 0.2s ease, background-color 0.2s ease;
    border: 3px solid var(--color-primary-mint);
    flex-shrink: 0;
}

.slider-handle:hover .handle-button,
.slider-handle:active .handle-button {
    transform: scale(1.1);
    background-color: var(--color-primary-mint);
}

/* ==========================================================================
   💎 15. Scroll Reveal Animations (Versão 2)
   ========================================================================== */

.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 1s cubic-bezier(0.16, 1, 0.3, 1), transform 1s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* Delay modifiers for sequential entry */
.reveal-delay-1 {
    transition-delay: 0.15s;
}

.reveal-delay-2 {
    transition-delay: 0.3s;
}

.reveal-delay-3 {
    transition-delay: 0.45s;
}

@media (max-width: 768px) {
    .comparison-slider-wrapper {
        aspect-ratio: 4 / 3; /* Taller on mobile for better visibility */
    }
}