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

:root {
    --primary: #1e88e5; /* Trust Blue */
    --primary-light: #e3f2fd;
    --secondary: #43a047; /* Healthcare Mint */
    --secondary-light: #e8f5e9;
    --accent: #90a4ae; /* Subtle Silver */
    --text-dark: #263238;
    --text-muted: #546e7a;
    --bg-light: #ffffff;
    --bg-alt: #f8fafc;
    --shadow-soft: 0 10px 30px rgba(0, 0, 0, 0.05);
    --shadow-medium: 0 15px 40px rgba(0, 0, 0, 0.1);
    --radius: 16px;
    --transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
}

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    background-color: var(--bg-light);
    overflow-x: hidden;
}

h1, h2, h3, h4 {
    font-family: 'Outfit', sans-serif;
    font-weight: 600;
    line-height: 1.2;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

/* Badge */
.bv-badge {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    background: var(--text-dark);
    color: white;
    padding: 4px 12px;
    font-size: 10px;
    letter-spacing: 1px;
    text-transform: uppercase;
    border-radius: 0 0 8px 8px;
    z-index: 2000;
}

/* Header */
header {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 20px 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: var(--transition);
}

header.scrolled {
    padding: 15px 5%;
    box-shadow: var(--shadow-soft);
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: 'Outfit', sans-serif;
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
}

.logo span {
    color: var(--text-dark);
}

.logo i {
    font-size: 28px;
}

nav ul {
    display: flex;
    gap: 30px;
    list-style: none;
}

nav ul li a {
    font-weight: 500;
    color: var(--text-muted);
}

nav ul li a:hover, nav ul li a.active {
    color: var(--primary);
}

.cta-btn {
    background: var(--primary);
    color: white;
    padding: 12px 28px;
    border-radius: 50px;
    font-weight: 600;
    box-shadow: 0 4px 15px rgba(30, 136, 229, 0.3);
}

.cta-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(30, 136, 229, 0.4);
}

/* Section Components */
section {
    padding: 100px 5%;
    position: relative;
}

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

.section-title h2 {
    font-size: 42px;
    margin-bottom: 20px;
}

.section-title p {
    color: var(--text-muted);
    font-size: 18px;
}

/* Cards */
.card {
    background: white;
    border-radius: var(--radius);
    padding: 40px;
    box-shadow: var(--shadow-soft);
    transition: var(--transition);
    border: 1px solid rgba(0, 0, 0, 0.03);
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-medium);
}

/* Reveal Animations */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.165, 0.84, 0.44, 1);
}

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

/* Smile Slider (Before/After) */
.comparison-slider {
    position: relative;
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    border-radius: var(--radius);
    box-shadow: var(--shadow-medium);
}

.comparison-slider img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.comparison-slider .after-img {
    clip-path: inset(0 0 0 50%);
}

.slider-handle {
    position: absolute;
    top: 0;
    left: 50%;
    width: 4px;
    height: 100%;
    background: white;
    transform: translateX(-50%);
    cursor: ew-resize;
    z-index: 10;
}

.slider-handle::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 40px;
    height: 40px;
    background: white;
    border-radius: 50%;
    box-shadow: 0 0 15px rgba(0,0,0,0.2);
}

/* Footer */
footer {
    background: var(--bg-alt);
    padding: 80px 5% 40px;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 60px;
    margin-bottom: 60px;
}

.footer-brand p {
    margin-top: 20px;
    color: var(--text-muted);
}

.footer-links h4 {
    margin-bottom: 25px;
}

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

.footer-links ul li {
    margin-bottom: 12px;
}

.footer-links ul li a {
    color: var(--text-muted);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 40px;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
    color: var(--text-muted);
    font-size: 14px;
}

/* Responsive */
@media (max-width: 992px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
    .section-title h2 {
        font-size: 32px;
    }
}

@media (max-width: 768px) {
    header {
        padding: 15px 5%;
    }
    nav {
        display: none; /* Mobile menu would go here */
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}