/* === Smile Family Dental — Warm Family === */
:root {
    --bg: #ffffff;
    --bg-green: #f0f7f2;
    --bg-warm: #fefcf8;
    --text: #2d3b2e;
    --text-muted: #5e6e60;
    --text-light: #8a9a8c;
    --green: #34a853;
    --green-dark: #2d8f47;
    --green-light: #e8f5e9;
    --yellow: #f9a825;
    --yellow-light: #fff8e1;
    --font: 'Nunito', sans-serif;
    --radius: 16px;
    --radius-sm: 10px;
    --shadow-sm: 0 2px 8px rgba(45,59,46,.04);
    --shadow-md: 0 8px 30px rgba(45,59,46,.06);
    --shadow-lg: 0 16px 50px rgba(45,59,46,.08);
    --transition: .4s cubic-bezier(.25,.46,.45,.94);
}

/* Reset */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    font-weight: 400;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; height: auto; }
a { text-decoration: none; color: inherit; }

/* Layout */
.container { max-width: 1100px; margin: 0 auto; padding: 0 28px; }
.center { display: block; text-align: center; }

/* Typography */
.section-tag {
    font-size: .72rem;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--green);
    font-weight: 700;
    margin-bottom: 8px;
    display: block;
}
.section-title {
    font-size: clamp(1.7rem, 3vw, 2.3rem);
    font-weight: 800;
    margin-bottom: 12px;
    text-align: center;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 14px 28px;
    border-radius: 50px;
    font-size: .88rem;
    font-weight: 700;
    transition: all var(--transition);
    cursor: pointer;
    border: none;
}
.btn-primary { background: var(--green); color: #fff; }
.btn-primary:hover { background: var(--green-dark); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-ghost { background: transparent; color: var(--green); border: 2px solid var(--green-light); }
.btn-ghost:hover { border-color: var(--green); background: var(--green-light); }
.btn-header {
    padding: 9px 20px;
    background: var(--green);
    color: #fff;
    border-radius: 50px;
    font-size: .82rem;
    font-weight: 700;
    transition: all .3s;
}
.btn-header:hover { background: var(--green-dark); }

/* ==================== HEADER ==================== */
.header {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    padding: 14px 0;
    background: rgba(255,255,255,0);
    transition: all .35s ease;
}
.header.scrolled {
    background: rgba(255,255,255,.97);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 16px rgba(45,59,46,.04);
    padding: 10px 0;
}
.header-inner { display: flex; align-items: center; justify-content: space-between; }
.logo { font-size: 1.2rem; font-weight: 800; color: var(--text); display: flex; align-items: center; gap: 4px; }
.logo-icon { font-size: 1.3rem; }
.nav { display: flex; gap: 24px; }
.nav a { font-size: .85rem; color: var(--text-muted); font-weight: 600; transition: color .3s; }
.nav a:hover { color: var(--green); }
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    width: 24px;
    height: 18px;
    flex-direction: column;
    justify-content: space-between;
}
.nav-toggle span { display: block; height: 3px; width: 100%; background: var(--text); border-radius: 3px; transition: all .3s; }

/* ==================== HERO ==================== */
.hero { padding: 130px 0 60px; background: var(--bg-warm); }
.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}
.hero-badge {
    display: inline-block;
    padding: 6px 14px;
    background: var(--green-light);
    color: var(--green);
    font-size: .72rem;
    font-weight: 700;
    border-radius: 20px;
    margin-bottom: 16px;
}
.hero-text h1 {
    font-size: clamp(2rem, 3.5vw, 2.7rem);
    font-weight: 800;
    line-height: 1.25;
    margin-bottom: 16px;
}
.hero-text h1 span { color: var(--green); }
.hero-text > p {
    color: var(--text-muted);
    font-size: .95rem;
    margin-bottom: 28px;
    max-width: 420px;
}
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-img { position: relative; }
.hero-img img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
}
.hero-blob {
    position: absolute;
    top: -20px;
    right: -20px;
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: var(--yellow-light);
    z-index: -1;
}

/* ==================== STATS BAR ==================== */
.stats-bar { padding: 24px 0; border-bottom: 1px solid var(--green-light); }
.stats-inner { display: flex; justify-content: center; gap: 48px; flex-wrap: wrap; }
.stat-item { text-align: center; }
.stat-item strong { display: block; font-size: 1.3rem; font-weight: 800; color: var(--green); }
.stat-item span { font-size: .72rem; color: var(--text-light); font-weight: 600; }

/* ==================== SERVICES ==================== */
.section { padding: 80px 0; }
.section-green { background: var(--bg-green); }
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 36px;
}
.service-card {
    background: var(--bg);
    border-radius: var(--radius);
    padding: 28px 24px;
    border: 2px solid transparent;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}
.service-card:hover {
    transform: translateY(-4px);
    border-color: var(--green-light);
    box-shadow: var(--shadow-md);
}
.card-icon { font-size: 2rem; margin-bottom: 12px; }
.service-card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 8px; }
.service-card p { font-size: .84rem; color: var(--text-muted); line-height: 1.6; margin-bottom: 12px; }
.card-tag {
    font-size: .68rem;
    font-weight: 700;
    color: var(--green);
    background: var(--green-light);
    padding: 3px 10px;
    border-radius: 12px;
    display: inline-block;
}

/* ==================== WHY US ==================== */
.why-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-top: 36px;
}
.why-item {
    background: var(--bg);
    border-radius: var(--radius);
    padding: 28px;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
}
.why-item:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.why-num {
    font-size: 2rem;
    font-weight: 800;
    color: var(--green-light);
    display: block;
    margin-bottom: 8px;
    line-height: 1;
}
.why-item h3 { font-size: .95rem; font-weight: 700; margin-bottom: 6px; }
.why-item p { font-size: .84rem; color: var(--text-muted); }

/* ==================== REVIEWS ==================== */
.reviews-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 36px;
}
.review-card {
    background: var(--bg-warm);
    border-radius: var(--radius);
    padding: 28px;
    border: 1px solid rgba(52,168,83,.08);
    transition: all var(--transition);
}
.review-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.review-stars { color: var(--yellow); font-size: .9rem; margin-bottom: 12px; letter-spacing: 2px; }
.review-card p { font-size: .88rem; color: var(--text-muted); margin-bottom: 16px; font-style: italic; }
.reviewer strong { display: block; font-size: .82rem; color: var(--text); }
.reviewer span { font-size: .72rem; color: var(--text-light); }

/* ==================== PROCESS STEPS ==================== */
.process-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-top: 36px;
}
.step { text-align: center; }
.step-number {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--green);
    color: #fff;
    font-size: 1.2rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 14px;
}
.step h3 { font-size: .9rem; font-weight: 700; margin-bottom: 6px; }
.step p { font-size: .8rem; color: var(--text-muted); }

/* ==================== BOOK ==================== */
.book-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 56px;
    align-items: center;
}
.book-text h2 { font-size: clamp(1.6rem, 2.5vw, 2rem); font-weight: 800; margin-bottom: 12px; }
.book-text > p { color: var(--text-muted); font-size: .9rem; margin-bottom: 28px; }
.book-details { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-bottom: 28px; }
.book-detail strong {
    display: block;
    font-size: .7rem;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: var(--green);
    font-weight: 700;
    margin-bottom: 4px;
}
.book-detail span { font-size: .86rem; color: var(--text-muted); line-height: 1.5; }
.book-image img {
    width: 100%;
    height: 380px;
    object-fit: cover;
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
}

/* ==================== FOOTER ==================== */
.footer { padding: 40px 0 0; border-top: 2px solid var(--green-light); }
.footer-inner {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 32px;
    align-items: start;
}
.footer-left p { font-size: .78rem; color: var(--text-light); margin-top: 6px; line-height: 1.5; }
.footer-nav { display: flex; gap: 20px; }
.footer-nav a { font-size: .82rem; color: var(--text-muted); font-weight: 600; transition: color .3s; }
.footer-nav a:hover { color: var(--green); }
.footer-right { text-align: right; }
.footer-right p { font-size: .78rem; color: var(--text-light); line-height: 1.5; }
.footer-bottom { text-align: center; padding: 16px 0; margin-top: 24px; border-top: 1px solid var(--green-light); }
.footer-bottom p { font-size: .72rem; color: var(--text-light); }

/* ==================== ANIMATIONS ==================== */
.reveal {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity .5s var(--transition), transform .5s var(--transition);
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ==================== RESPONSIVE ==================== */
@media (max-width: 900px) {
    .hero-content, .book-grid { grid-template-columns: 1fr; gap: 36px; }
    .services-grid, .reviews-grid { grid-template-columns: repeat(2, 1fr); }
    .why-grid { grid-template-columns: 1fr; }
    .process-steps { grid-template-columns: repeat(2, 1fr); }
    .hero-img { order: -1; }
    .hero-img img { height: 280px; }
    .footer-inner { grid-template-columns: 1fr; gap: 16px; text-align: center; }
    .footer-right { text-align: center; }
    .footer-nav { justify-content: center; }
}

@media (max-width: 768px) {
    .nav, .btn-header { display: none; }
    .nav-toggle { display: flex; }
    .nav.open {
        display: flex;
        flex-direction: column;
        position: fixed;
        inset: 0;
        background: var(--bg);
        padding: 100px 32px;
        gap: 24px;
        z-index: 999;
    }
    .nav.open a { font-size: 1.1rem; color: var(--text); }
    .hero { padding: 110px 0 40px; }
    .hero-text h1 { font-size: 1.8rem; }
    .services-grid, .reviews-grid { grid-template-columns: 1fr; }
    .process-steps { grid-template-columns: 1fr 1fr; }
    .stats-inner { gap: 20px; }
    .section { padding: 56px 0; }
}