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

:root {
    --blue-900: #0a1628;
    --blue-800: #0f2240;
    --blue-700: #143a6b;
    --blue-600: #1a4f8b;
    --blue-500: #2563eb;
    --blue-400: #4a8af5;
    --blue-300: #7babf8;
    --blue-200: #b3d1fc;
    --blue-100: #dbeafe;
    --blue-50:  #eff6ff;
    --gray-900: #111827;
    --gray-700: #374151;
    --gray-600: #4b5563;
    --gray-500: #6b7280;
    --gray-400: #9ca3af;
    --gray-300: #d1d5db;
    --gray-200: #e5e7eb;
    --gray-100: #f3f4f6;
    --gray-50:  #f9fafb;
    --white:    #ffffff;
    --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
    --max-w: 1200px;
    --radius: 12px;
    --shadow: 0 4px 24px rgba(10,22,40,.08);
    --shadow-lg: 0 8px 40px rgba(10,22,40,.12);
    --transition: .25s ease;
}

html { scroll-behavior: smooth; }
body { font-family: var(--font); color: var(--gray-700); line-height: 1.7; background: var(--white); }
a { color: var(--blue-500); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--blue-700); }
img { max-width: 100%; height: auto; }
ul { list-style: none; }

.container { width: 90%; max-width: var(--max-w); margin: 0 auto; }

/* ===== Header / Navbar ===== */
.navbar {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    background: rgba(255,255,255,.95); backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--gray-200);
    transition: box-shadow var(--transition);
}
.navbar.scrolled { box-shadow: var(--shadow); }

.navbar .container {
    display: flex; align-items: center; justify-content: space-between;
    height: 72px;
}

.navbar__logo {
    font-size: 1.5rem; font-weight: 800; color: var(--blue-700);
    letter-spacing: -.5px;
}
.navbar__logo span { color: var(--blue-500); }

.navbar__links { display: flex; gap: 2rem; align-items: center; }
.navbar__links a {
    font-size: .925rem; font-weight: 500; color: var(--gray-600);
    position: relative; padding: .25rem 0;
}
.navbar__links a::after {
    content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 2px;
    background: var(--blue-500); transition: width var(--transition);
}
.navbar__links a:hover, .navbar__links a.active { color: var(--blue-700); }
.navbar__links a:hover::after, .navbar__links a.active::after { width: 100%; }

.navbar__cta {
    background: transparent; color: var(--blue-600) !important; padding: .5rem 1.1rem;
    border-radius: 6px; font-weight: 600; font-size: .8rem;
    border: 1.5px solid var(--blue-200);
    transition: all var(--transition);
    display: inline-flex; align-items: center; gap: .3rem;
    letter-spacing: .2px;
}
.navbar__cta::after { display: none !important; }
.navbar__cta:hover { border-color: var(--blue-500); background: var(--blue-50); color: var(--blue-700) !important; }

.hamburger {
    display: none; flex-direction: column; gap: 5px; cursor: pointer;
    background: none; border: none; padding: 4px;
}
.hamburger span { width: 24px; height: 2px; background: var(--gray-700); transition: var(--transition); border-radius: 2px; }

/* ===== Hero ===== */
.hero {
    padding: 10rem 0 6rem;
    background: linear-gradient(135deg, var(--blue-900) 0%, var(--blue-700) 100%);
    color: var(--white); position: relative; overflow: hidden;
}
.hero::before {
    content: ''; position: absolute; top: -50%; right: -20%; width: 700px; height: 700px;
    background: radial-gradient(circle, rgba(37,99,235,.25) 0%, transparent 70%);
    border-radius: 50%;
}
.hero .container { position: relative; z-index: 1; }
.hero__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; }
.hero__badge {
    display: inline-block; background: rgba(255,255,255,.12); padding: .4rem 1rem;
    border-radius: 20px; font-size: .8rem; font-weight: 600; margin-bottom: 1.5rem;
    letter-spacing: .5px; text-transform: uppercase;
}
.hero h1 { font-size: 3rem; font-weight: 800; line-height: 1.15; margin-bottom: 1.5rem; }
.hero p { font-size: 1.15rem; line-height: 1.8; color: var(--blue-200); margin-bottom: 2rem; max-width: 520px; }

.hero__buttons { display: flex; gap: 1rem; flex-wrap: wrap; }
.btn {
    display: inline-flex; align-items: center; gap: .5rem; padding: .85rem 1.8rem;
    border-radius: 8px; font-weight: 600; font-size: .95rem;
    transition: all var(--transition); cursor: pointer; border: none;
}
.btn--primary { background: var(--blue-500); color: var(--white); }
.btn--primary:hover { background: var(--blue-400); color: var(--white); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(37,99,235,.35); }
.btn--outline { background: transparent; color: var(--white); border: 2px solid rgba(255,255,255,.3); }
.btn--outline:hover { border-color: var(--white); color: var(--white); transform: translateY(-2px); }
.btn--white { background: var(--white); color: var(--blue-700); }
.btn--white:hover { background: var(--blue-50); color: var(--blue-700); transform: translateY(-2px); box-shadow: var(--shadow-lg); }

.hero__visual {
    display: flex; justify-content: center; align-items: center;
}
.hero__stats {
    display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem;
}
.stat-card {
    background: rgba(255,255,255,.08); backdrop-filter: blur(8px);
    border: 1px solid rgba(255,255,255,.12); border-radius: var(--radius);
    padding: 1.75rem; text-align: center;
    transition: transform var(--transition), background var(--transition);
}
.stat-card:hover { transform: translateY(-4px); background: rgba(255,255,255,.12); }
.stat-card__number { font-size: 2.25rem; font-weight: 800; color: var(--blue-300); }
.stat-card__label { font-size: .85rem; color: var(--blue-200); margin-top: .25rem; }

/* ===== Sections ===== */
.section { padding: 3.5rem 0; }
.section--gray { background: var(--gray-50); }
.section--blue { background: linear-gradient(135deg, var(--blue-900) 0%, var(--blue-800) 100%); color: var(--white); }
.section__header { text-align: center; margin-bottom: 2.5rem; }
.section__label {
    display: inline-block; font-size: .8rem; font-weight: 700; color: var(--blue-500);
    text-transform: uppercase; letter-spacing: 1.5px; margin-bottom: .75rem;
}
.section__title { font-size: 2.25rem; font-weight: 800; color: var(--gray-900); line-height: 1.25; }
.section--blue .section__title { color: var(--white); }
.section__subtitle { font-size: 1.05rem; color: var(--gray-500); margin-top: .75rem; max-width: 600px; margin-left: auto; margin-right: auto; }
.section--blue .section__subtitle { color: var(--blue-200); }

/* ===== Service Cards ===== */
.services-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem;
}
.service-card {
    background: var(--white); border: 1px solid var(--gray-200); border-radius: var(--radius);
    padding: 2.25rem; transition: all var(--transition); position: relative; overflow: hidden;
}
.service-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
    background: linear-gradient(90deg, var(--blue-500), var(--blue-400));
    transform: scaleX(0); transition: transform var(--transition); transform-origin: left;
}
.service-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--blue-200); }
.service-card:hover::before { transform: scaleX(1); }

.service-card__icon {
    width: 52px; height: 52px; border-radius: 10px;
    background: var(--blue-50); color: var(--blue-500);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.5rem; margin-bottom: 1.25rem;
}
.service-card h3 { font-size: 1.15rem; font-weight: 700; color: var(--gray-900); margin-bottom: .75rem; }
.service-card p { font-size: .925rem; color: var(--gray-600); line-height: 1.7; }
.service-card__link {
    display: inline-flex; align-items: center; gap: .35rem;
    font-size: .875rem; font-weight: 600; color: var(--blue-500); margin-top: 1.25rem;
}
.service-card__link:hover { gap: .6rem; }

/* ===== Feature List ===== */
.features-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: center; }
.features-grid--reverse .features-content { order: 2; }
.features-grid--reverse .features-visual { order: 1; }

.feature-item { display: flex; gap: 1rem; margin-bottom: 1.25rem; }
.feature-item__icon {
    flex-shrink: 0; width: 40px; height: 40px; border-radius: 8px;
    background: var(--blue-50); color: var(--blue-500); display: flex;
    align-items: center; justify-content: center; font-weight: 700; font-size: 1.1rem;
}
.feature-item h4 { font-size: 1rem; font-weight: 700; color: var(--gray-900); margin-bottom: .25rem; }
.feature-item p { font-size: .9rem; color: var(--gray-600); }

.features-visual {
    background: linear-gradient(135deg, var(--blue-50), var(--blue-100));
    border-radius: var(--radius); padding: 3rem; text-align: center;
    border: 1px solid var(--blue-200);
}
.features-visual__icon { font-size: 4rem; margin-bottom: 1rem; color: var(--blue-500); opacity: .6; }

/* ===== Partners ===== */
.partners-row {
    display: flex; flex-wrap: wrap; justify-content: center; gap: 2.5rem; align-items: center;
}
.partner-badge {
    background: var(--white); border: 1px solid var(--gray-200); border-radius: 8px;
    padding: .75rem 1.5rem; font-weight: 600; color: var(--gray-600); font-size: .9rem;
    transition: all var(--transition);
}
.partner-badge:hover { border-color: var(--blue-300); color: var(--blue-600); box-shadow: var(--shadow); }

/* ===== Certifications ===== */
.cert-cards { display: flex; justify-content: center; gap: 2rem; flex-wrap: wrap; }
.cert-card {
    background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.12);
    border-radius: var(--radius); padding: 2rem 2.5rem; text-align: center;
    transition: all var(--transition);
}
.cert-card:hover { background: rgba(255,255,255,.1); transform: translateY(-4px); }
.cert-card__name { font-size: 1.5rem; font-weight: 800; color: var(--blue-300); }
.cert-card__desc { font-size: .85rem; color: var(--blue-200); margin-top: .5rem; }

/* ===== Dental Hero ===== */
.dental-hero {
    padding: 10rem 0 5rem;
    background: linear-gradient(135deg, var(--blue-800) 0%, #0c4a6e 100%);
    color: var(--white);
}
.dental-hero h1 { font-size: 2.75rem; font-weight: 800; margin-bottom: 1rem; }
.dental-hero p { font-size: 1.1rem; color: var(--blue-200); max-width: 600px; }

/* ===== Contact ===== */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; }
.contact-info-card {
    background: var(--blue-50); border-radius: var(--radius); padding: 2.5rem;
    border: 1px solid var(--blue-100);
}
.contact-info-card h3 { font-size: 1.25rem; font-weight: 700; color: var(--gray-900); margin-bottom: 1.5rem; }
.contact-detail { display: flex; gap: 1rem; margin-bottom: 1.25rem; align-items: flex-start; }
.contact-detail__icon {
    flex-shrink: 0; width: 40px; height: 40px; border-radius: 8px;
    background: var(--blue-500); color: var(--white); display: flex;
    align-items: center; justify-content: center; font-size: .9rem; font-weight: 700;
}
.contact-detail h4 { font-size: .925rem; font-weight: 700; color: var(--gray-900); margin-bottom: .15rem; }
.contact-detail p, .contact-detail a { font-size: .9rem; color: var(--gray-600); }

.contact-form { background: var(--white); border: 1px solid var(--gray-200); border-radius: var(--radius); padding: 2.5rem; }
.contact-form h3 { font-size: 1.25rem; font-weight: 700; color: var(--gray-900); margin-bottom: 1.5rem; }

.form-group { margin-bottom: 1.25rem; }
.form-group label { display: block; font-size: .875rem; font-weight: 600; color: var(--gray-700); margin-bottom: .4rem; }
.form-group input, .form-group textarea, .form-group select {
    width: 100%; padding: .75rem 1rem; border: 1px solid var(--gray-300); border-radius: 8px;
    font-family: var(--font); font-size: .925rem; color: var(--gray-700);
    transition: border-color var(--transition), box-shadow var(--transition);
    background: var(--white);
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
    outline: none; border-color: var(--blue-500); box-shadow: 0 0 0 3px var(--blue-100);
}
.form-group textarea { resize: vertical; min-height: 120px; }

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

/* ===== Support Banner ===== */
.support-banner {
    background: var(--blue-500); color: var(--white); padding: 1rem 0;
    text-align: center; font-size: .9rem;
}
.support-banner a { color: var(--white); font-weight: 700; text-decoration: underline; }
.support-banner a:hover { color: var(--blue-100); }

/* ===== CTA Section ===== */
.cta-section {
    padding: 3.5rem 0; text-align: center;
    background: linear-gradient(135deg, var(--blue-700) 0%, var(--blue-900) 100%);
    color: var(--white);
}
.cta-section h2 { font-size: 2.25rem; font-weight: 800; margin-bottom: 1rem; }
.cta-section p { font-size: 1.05rem; color: var(--blue-200); margin-bottom: 2rem; max-width: 550px; margin-left: auto; margin-right: auto; }
.cta-section .btn { margin: 0 .5rem; }

/* ===== Footer ===== */
.footer {
    background: var(--blue-900); color: var(--blue-200); padding: 4rem 0 2rem;
}
.footer__grid {
    display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 3rem;
    margin-bottom: 3rem;
}
.footer__brand p { font-size: .9rem; line-height: 1.7; margin-top: .75rem; max-width: 300px; }
.footer h4 { font-size: .925rem; font-weight: 700; color: var(--white); margin-bottom: 1rem; text-transform: uppercase; letter-spacing: .5px; }
.footer ul li { margin-bottom: .5rem; }
.footer ul a { color: var(--blue-200); font-size: .9rem; }
.footer ul a:hover { color: var(--white); }

.footer__bottom {
    border-top: 1px solid rgba(255,255,255,.08); padding-top: 2rem;
    display: flex; justify-content: space-between; align-items: center;
    font-size: .825rem; color: var(--gray-500);
}
.footer__bottom a { color: var(--gray-500); }
.footer__bottom a:hover { color: var(--blue-300); }
.footer__certs { display: flex; gap: 1rem; }
.footer__cert-badge {
    background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.1);
    border-radius: 6px; padding: .35rem .75rem; font-size: .75rem; font-weight: 600;
    color: var(--blue-300);
}

/* ===== Dark Mode ===== */
[data-theme="dark"] {
    --white: #0f1419;
    --gray-50: #161b22;
    --gray-100: #1c2128;
    --gray-200: #2d333b;
    --gray-300: #373e47;
    --gray-400: #768390;
    --gray-500: #8b949e;
    --gray-600: #adbac7;
    --gray-700: #cdd9e5;
    --gray-900: #f0f3f6;
    --blue-50: #121d2f;
    --blue-100: #132337;
}
[data-theme="dark"] .navbar { background: rgba(15,20,25,.95); border-bottom-color: var(--gray-200); }
[data-theme="dark"] .service-card { background: var(--gray-100); border-color: var(--gray-200); }
[data-theme="dark"] .service-card:hover { border-color: var(--blue-400); }
[data-theme="dark"] .contact-form { background: var(--gray-100); border-color: var(--gray-200); }
[data-theme="dark"] .contact-info-card { background: var(--gray-100); border-color: var(--gray-200); }
[data-theme="dark"] .form-group input,
[data-theme="dark"] .form-group textarea,
[data-theme="dark"] .form-group select { background: var(--gray-50); border-color: var(--gray-300); color: var(--gray-700); }
[data-theme="dark"] .partner-badge { background: var(--gray-100); border-color: var(--gray-200); color: var(--gray-500); }
[data-theme="dark"] .features-visual { background: linear-gradient(135deg, var(--gray-100), var(--gray-50)); border-color: var(--gray-200); }
[data-theme="dark"] .hamburger span { background: var(--gray-600); }

.theme-toggle {
    background: none; border: 1px solid var(--gray-200); border-radius: 6px;
    padding: .4rem; cursor: pointer; color: var(--gray-500); display: flex;
    align-items: center; justify-content: center; transition: all var(--transition);
}
.theme-toggle:hover { border-color: var(--blue-400); color: var(--blue-500); }

.navbar__link--subtle {
    font-size: .85rem !important; font-weight: 500; color: var(--gray-400) !important;
}
.navbar__link--subtle::after { display: none !important; }
.navbar__link--subtle:hover { color: var(--blue-500) !important; }

/* ===== Responsive ===== */
@media (max-width: 968px) {
    .hero__grid { grid-template-columns: 1fr; text-align: center; }
    .hero p { margin-left: auto; margin-right: auto; }
    .hero__buttons { justify-content: center; }
    .hero__visual { margin-top: 2rem; }
    .services-grid { grid-template-columns: 1fr 1fr; }
    .features-grid { grid-template-columns: 1fr; }
    .features-grid--reverse .features-content { order: 1; }
    .features-grid--reverse .features-visual { order: 2; }
    .contact-grid { grid-template-columns: 1fr; }
    .footer__grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
    .navbar__links { 
        display: none; position: fixed; top: 72px; left: 0; right: 0; bottom: 0;
        background: var(--white); flex-direction: column; padding: 2rem;
        gap: 1rem; align-items: flex-start; border-top: 1px solid var(--gray-200);
    }
    .navbar__links.open { display: flex; }
    .hamburger { display: flex; }
    .hero h1 { font-size: 2rem; }
    .hero { padding: 8rem 0 4rem; }
    .services-grid { grid-template-columns: 1fr; }
    .hero__stats { grid-template-columns: 1fr 1fr; gap: .75rem; }
    .section__title { font-size: 1.75rem; }
    .footer__grid { grid-template-columns: 1fr; }
    .footer__bottom { flex-direction: column; gap: 1rem; text-align: center; }
    .form-row { grid-template-columns: 1fr; }
    .dental-hero h1 { font-size: 2rem; }
}