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

:root {
    --primary: #0ea5e9;
    --primary-dark: #0284c7;
    --primary-light: #e0f2fe;
    --accent: #06b6d4;
    --dark: #0f172a;
    --dark-soft: #1e293b;
    --gray: #64748b;
    --gray-light: #94a3b8;
    --light: #f8fafc;
    --white: #ffffff;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.1);
    --radius: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--dark);
    background: var(--white);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* NAV */
nav {
    position: sticky;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: 72px;
    background: rgba(255,255,255,0.95);
    border-bottom: 1px solid rgba(0,0,0,0.08);
}

nav .container {
    display: flex;
    flex-wrap: nowrap;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    position: relative;
    z-index: 2;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--dark);
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}

.logo-text {
    font-family: 'Playfair Display', serif;
    font-weight: 700;
    font-size: 20px;
}

.nav-links {
    display: flex;
    flex-direction: row;
    flex-wrap: nowrap;
    align-items: center;
    justify-content: flex-end;
    gap: 32px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-links li {
    display: flex;
    align-items: center;
    white-space: nowrap;
}

.nav-links a {
    text-decoration: none;
    color: var(--gray);
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-links a:hover { color: var(--primary); }

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: var(--transition);
    border-radius: 2px;
}

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

/* HAMBURGER */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 8px;
    z-index: 1100;
    background: none;
    border: none;
}

.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--dark);
    border-radius: 2px;
    transition: var(--transition);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* MOBILE MENU */
.mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 1050;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.mobile-menu.active {
    opacity: 1;
    visibility: visible;
}

.mobile-menu a {
    text-decoration: none;
    color: var(--dark);
    font-size: 22px;
    font-weight: 500;
    padding: 14px 32px;
    border-radius: 12px;
    transition: var(--transition);
}

.mobile-menu a:hover {
    background: var(--primary-light);
    color: var(--primary);
}

.mobile-menu .btn {
    margin-top: 16px;
    font-size: 16px;
    padding: 16px 40px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: var(--white);
    box-shadow: 0 4px 15px rgba(14,165,233,0.35);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(14,165,233,0.45);
}

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

.btn-outline:hover {
    background: var(--dark);
    color: var(--white);
}

.btn-white {
    background: var(--white);
    color: var(--primary);
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.btn-white:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

/* HERO */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--white) 50%, #f0fdfa 100%);
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(14,165,233,0.08) 0%, transparent 70%);
    border-radius: 50%;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(6,182,212,0.06) 0%, transparent 70%);
    border-radius: 50%;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--white);
    padding: 8px 16px;
    border-radius: 50px;
    font-size: 13px;
    font-weight: 500;
    color: var(--primary);
    box-shadow: var(--shadow-sm);
    margin-bottom: 24px;
}

.hero-badge span {
    width: 8px;
    height: 8px;
    background: #22c55e;
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.hero h1 {
    font-family: 'Playfair Display', serif;
    font-size: 64px;
    font-weight: 700;
    line-height: 1.1;
    color: var(--dark);
    margin-bottom: 20px;
}

.hero h1 .highlight {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 18px;
    color: var(--gray);
    margin-bottom: 36px;
    max-width: 480px;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: 16px;
    align-items: center;
    margin-bottom: 48px;
}

.hero-stats {
    display: flex;
    gap: 48px;
}

.stat-item h3 {
    font-size: 36px;
    font-weight: 700;
    color: var(--dark);
    line-height: 1;
}

.stat-item p {
    font-size: 13px;
    color: var(--gray-light);
    margin-bottom: 0;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image-container {
    width: 480px;
    height: 480px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-light), #f0fdfa);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.hero-image-container::before {
    content: '';
    position: absolute;
    inset: -20px;
    border-radius: 50%;
    border: 2px dashed rgba(14,165,233,0.2);
    animation: spin 30s linear infinite;
}

@keyframes spin {
    100% { transform: rotate(360deg); }
}

.tooth-icon {
    font-size: 180px;
    opacity: 0.9;
}

.floating-card {
    position: absolute;
    background: var(--white);
    padding: 16px 20px;
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 12px;
    animation: float 3s ease-in-out infinite;
}

.floating-card:nth-child(2) { top: 40px; right: -20px; animation-delay: 0.5s; }
.floating-card:nth-child(3) { bottom: 60px; left: -30px; animation-delay: 1s; }

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.floating-card .icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
}

.floating-card .icon.green { background: #dcfce7; }
.floating-card .icon.blue { background: var(--primary-light); }

.floating-card .text strong {
    display: block;
    font-size: 14px;
    font-weight: 600;
}

.floating-card .text span {
    font-size: 12px;
    color: var(--gray);
}

/* SECTIONS */
section { padding: 100px 0; }

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-label {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--primary);
    margin-bottom: 12px;
}

.section-title {
    font-family: 'Playfair Display', serif;
    font-size: 44px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 16px;
}

.section-desc {
    font-size: 17px;
    color: var(--gray);
    max-width: 560px;
    margin: 0 auto;
}

/* SERVICES */
.services { background: var(--light); }

.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.service-card {
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid transparent;
    position: relative;
    overflow: hidden;
}

.service-card-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    display: block;
}

.service-card-body {
    padding: 24px 28px 28px;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(14,165,233,0.1);
}

.service-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transform: scaleX(0);
    transition: var(--transition);
}

.service-card:hover::after { transform: scaleX(1); }

.service-card h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--dark);
}

.service-card p {
    font-size: 14px;
    color: var(--gray);
    line-height: 1.6;
}

/* ABOUT */
.about .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-visual {
    position: relative;
}

.about-img {
    width: 100%;
    height: 500px;
    border-radius: 24px;
    background: linear-gradient(135deg, var(--primary-light), #e0f7fa);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 120px;
    position: relative;
    overflow: hidden;
}

.about-img::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(14,165,233,0.1), rgba(6,182,212,0.05));
}

.experience-badge {
    position: absolute;
    bottom: -20px;
    right: -20px;
    background: var(--dark);
    color: var(--white);
    padding: 24px 32px;
    border-radius: 20px;
    text-align: center;
    box-shadow: var(--shadow-lg);
}

.experience-badge h3 {
    font-size: 40px;
    font-weight: 700;
    line-height: 1;
}

.experience-badge p {
    font-size: 13px;
    opacity: 0.7;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.about-content .section-label { text-align: left; }
.about-content .section-title { text-align: left; }

.about-text {
    font-size: 16px;
    color: var(--gray);
    line-height: 1.8;
    margin-bottom: 32px;
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 36px;
}

.about-feature {
    display: flex;
    align-items: center;
    gap: 12px;
}

.about-feature .check {
    width: 28px;
    height: 28px;
    background: var(--primary-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    flex-shrink: 0;
}

.about-feature span {
    font-size: 14px;
    font-weight: 500;
    color: var(--dark-soft);
}

/* WHY US */
.why-us { background: var(--dark); color: var(--white); }
.why-us .section-label { color: var(--accent); }
.why-us .section-title { color: var(--white); }
.why-us .section-desc { color: var(--gray-light); }

.why-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.why-card {
    background: var(--dark-soft);
    padding: 40px 32px;
    border-radius: var(--radius);
    border: 1px solid rgba(255,255,255,0.06);
    transition: var(--transition);
}

.why-card:hover {
    border-color: rgba(14,165,233,0.3);
    transform: translateY(-4px);
}

.why-card .icon {
    width: 60px;
    height: 60px;
    border-radius: 16px;
    background: rgba(14,165,233,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    margin-bottom: 24px;
}

.why-card h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
}

.why-card p {
    font-size: 15px;
    color: var(--gray-light);
    line-height: 1.7;
}

/* TESTIMONIALS */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.testimonial-card {
    background: var(--white);
    padding: 36px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    border: 1px solid rgba(0,0,0,0.04);
    transition: var(--transition);
}

.testimonial-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.stars {
    color: #fbbf24;
    font-size: 16px;
    margin-bottom: 16px;
    letter-spacing: 2px;
}

.testimonial-card blockquote {
    font-size: 15px;
    color: var(--dark-soft);
    line-height: 1.7;
    margin-bottom: 24px;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 14px;
}

.testimonial-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-light), #e0f7fa);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 600;
    color: var(--primary);
}

.testimonial-author strong {
    display: block;
    font-size: 15px;
    font-weight: 600;
}

.testimonial-author span {
    font-size: 13px;
    color: var(--gray-light);
}

/* CONTACT */
.contact-section { background: var(--light); }

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    background: var(--white);
    border-radius: 24px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.contact-info {
    padding: 48px;
    background: linear-gradient(135deg, var(--dark), var(--dark-soft));
    color: var(--white);
}

.contact-info h3 {
    font-family: 'Playfair Display', serif;
    font-size: 32px;
    margin-bottom: 12px;
}

.contact-info > p {
    font-size: 15px;
    color: var(--gray-light);
    margin-bottom: 36px;
    line-height: 1.7;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 28px;
}

.contact-item .icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: rgba(14,165,233,0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
}

.contact-item strong {
    display: block;
    font-size: 14px;
    margin-bottom: 4px;
}

.contact-item span {
    font-size: 14px;
    color: var(--gray-light);
}

.contact-form {
    padding: 48px;
}

.contact-form h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 8px;
}

.contact-form > p {
    font-size: 14px;
    color: var(--gray);
    margin-bottom: 32px;
}

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

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--dark-soft);
    margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    border: 1.5px solid #e2e8f0;
    border-radius: 12px;
    font-family: inherit;
    font-size: 14px;
    transition: var(--transition);
    background: var(--light);
    color: var(--dark);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(14,165,233,0.1);
    background: var(--white);
}

.form-group textarea { resize: vertical; min-height: 100px; }

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.contact-form .btn {
    width: 100%;
    justify-content: center;
    padding: 16px;
    font-size: 15px;
}

/* FOOTER */
footer {
    background: var(--dark);
    color: var(--white);
    padding: 80px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 60px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer-brand .logo {
    color: var(--white);
    margin-bottom: 16px;
}

.footer-brand p {
    font-size: 14px;
    color: var(--gray-light);
    line-height: 1.7;
    margin-bottom: 24px;
    max-width: 300px;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: rgba(255,255,255,0.06);
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    font-size: 16px;
    transition: var(--transition);
}

.footer-social a:hover {
    background: var(--primary);
    transform: translateY(-2px);
}

.footer-col h4 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 20px;
}

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

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

.footer-col a {
    text-decoration: none;
    color: var(--gray-light);
    font-size: 14px;
    transition: var(--transition);
}

.footer-col a:hover { color: var(--white); }

.footer-bottom {
    padding: 24px 0;
    text-align: center;
    font-size: 13px;
    color: var(--gray-light);
}

/* RESPONSIVE */
@media (max-width: 1024px) {
    .hero .container { grid-template-columns: 1fr; text-align: center; }
    .hero p { margin: 0 auto 36px; }
    .hero-actions { justify-content: center; }
    .hero-stats { justify-content: center; }
    .hero-visual { display: none; }
    .services-grid { grid-template-columns: repeat(2, 1fr); }
    .about .container { grid-template-columns: 1fr; }
    .about-visual { order: -1; }
    .about-content .section-label,
    .about-content .section-title { text-align: center; }
    .about-text { text-align: center; }
    .why-grid { grid-template-columns: 1fr; }
    .testimonials-grid { grid-template-columns: 1fr; }
    .contact-wrapper { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    .hero h1 { font-size: 42px; }
    .section-title { font-size: 32px; }
    .services-grid { grid-template-columns: 1fr; }
    .nav-links { display: none; }
    .hamburger { display: flex; }
    .mobile-menu { display: flex; }
    .hero-actions { flex-direction: column; }
    .form-row { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
}