/* ============================================
   Cohen Sheldon DDS — Warm Dental Practice Site
   Palette: Terracotta + Sand
   ============================================ */

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

:root {
  --terracotta:    #C4724E;
  --terracotta-dk: #A85A3C;
  --terracotta-lt: #D4926A;
  --sand:          #F5EDE4;
  --sand-dk:       #E8DDD2;
  --sand-lt:       #FBF7F3;
  --cream:         #FFFDF9;
  --charcoal:      #2D2420;
  --charcoal-mid:  #5A4A42;
  --text:          #3D2E26;
  --text-light:    #7A6558;
  --white:         #FFFFFF;
  --radius-sm:     10px;
  --radius-md:     16px;
  --radius-lg:     24px;
  --radius-xl:     32px;
  --shadow-sm:     0 2px 8px rgba(45,36,32,0.06);
  --shadow-md:     0 4px 20px rgba(45,36,32,0.08);
  --shadow-lg:     0 8px 40px rgba(45,36,32,0.10);
  --font-serif:    'DM Serif Display', Georgia, serif;
  --font-sans:     'Inter', system-ui, sans-serif;
  --transition:    0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--cream);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
ul { list-style: none; }

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

/* ─── TYPOGRAPHY ─── */
h1, h2, h3 { font-family: var(--font-serif); font-weight: 400; line-height: 1.2; color: var(--charcoal); }
h1 { font-size: clamp(2.4rem, 5vw, 3.8rem); }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.6rem); }
h3 { font-size: 1.25rem; }

/* ─── BUTTONS ─── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: var(--terracotta);
  color: var(--white);
  box-shadow: 0 4px 16px rgba(196,114,78,0.3);
}
.btn-primary:hover {
  background: var(--terracotta-dk);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(196,114,78,0.4);
}
.btn-outline {
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255,255,255,0.5);
}
.btn-outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: var(--white);
}
.btn-secondary {
  background: var(--sand);
  color: var(--text);
}
.btn-secondary:hover { background: var(--sand-dk); }
.btn-sm { padding: 8px 20px; font-size: 0.85rem; }
.btn-lg { padding: 16px 36px; font-size: 1.05rem; }
.btn-full { width: 100%; justify-content: center; }

/* ─── SECTION HELPERS ─── */
.section { padding: 100px 0; }
.section-header { text-align: center; max-width: 680px; margin: 0 auto 60px; }
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--terracotta);
  margin-bottom: 12px;
}
.section-title { margin-bottom: 16px; }
.section-desc { color: var(--text-light); font-size: 1.05rem; }

/* ─── HEADER ─── */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,253,249,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(196,114,78,0.08);
  transition: var(--transition);
}
.site-header.scrolled {
  box-shadow: var(--shadow-md);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-serif);
  font-size: 1.15rem;
  color: var(--charcoal);
}
.logo-accent { color: var(--terracotta); }
.main-nav ul { display: flex; align-items: center; gap: 32px; }
.main-nav a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--charcoal-mid);
  transition: var(--transition);
  position: relative;
}
.main-nav a:not(.btn):hover { color: var(--terracotta); }
.main-nav a:not(.btn)::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--terracotta);
  border-radius: 2px;
  transition: var(--transition);
}
.main-nav a:not(.btn):hover::after { width: 100%; }

/* Mobile toggle */
.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  padding: 4px 0;
}
.mobile-toggle span {
  display: block;
  height: 2px;
  background: var(--charcoal);
  border-radius: 2px;
  transition: var(--transition);
}
.mobile-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.mobile-toggle.active span:nth-child(2) { opacity: 0; }
.mobile-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* Mobile overlay */
.mobile-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 999;
  background: var(--cream);
  align-items: center;
  justify-content: center;
}
.mobile-overlay.open { display: flex; }
.mobile-overlay nav ul { display: flex; flex-direction: column; align-items: center; gap: 24px; }
.mobile-overlay a {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  color: var(--charcoal);
  transition: var(--transition);
}
.mobile-overlay a:hover { color: var(--terracotta); }

/* ─── HERO ─── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--sand) 0%, var(--sand-lt) 50%, var(--cream) 100%);
  padding-top: 72px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(196,114,78,0.08) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.hero-content { position: relative; z-index: 1; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--white);
  color: var(--terracotta);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: 50px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 24px;
}
.hero-headline {
  margin-bottom: 20px;
  color: var(--charcoal);
}
.hero-sub {
  font-size: 1.1rem;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 32px;
  max-width: 480px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 48px; }
.hero-stats {
  display: flex;
  align-items: center;
  gap: 24px;
}
.stat { display: flex; flex-direction: column; }
.stat-num {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  color: var(--charcoal);
}
.stat-label { font-size: 0.78rem; color: var(--text-light); text-transform: uppercase; letter-spacing: 0.05em; }
.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--sand-dk);
}

/* Hero visual */
.hero-visual { position: relative; }
.hero-img-wrap {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.hero-img-wrap img {
  width: 100%;
  height: 640px;
  object-fit: cover;
}
.hero-img-accent {
  position: absolute;
  bottom: -20px;
  left: -20px;
  width: 120px;
  height: 120px;
  background: var(--terracotta);
  border-radius: var(--radius-lg);
  z-index: -1;
  opacity: 0.2;
}
.hero-floating-card {
  position: absolute;
  bottom: 32px;
  left: -32px;
  background: var(--white);
  padding: 16px 24px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  color: var(--charcoal);
  font-size: 0.9rem;
  z-index: 2;
}
.hero-wave {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  line-height: 0;
}
.hero-wave svg { display: block; width: 100%; height: 80px; }

/* ─── SERVICES ─── */
.services { background: var(--sand-lt); }
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.service-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border: 1px solid rgba(196,114,78,0.06);
}
.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(196,114,78,0.15);
}
.service-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  margin-bottom: 20px;
}
.service-card h3 { margin-bottom: 10px; color: var(--charcoal); }
.service-card p { color: var(--text-light); font-size: 0.95rem; line-height: 1.65; }

/* ─── ABOUT ─── */
.about { background: var(--cream); }
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.about-visual { position: relative; }
.about-img-main {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.about-img-main img { width: 100%; height: 600px; object-fit: cover; }
.about-img-secondary {
  position: absolute;
  bottom: -32px;
  right: -32px;
  width: 200px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 4px solid var(--cream);
}
.about-img-secondary img { width: 100%; height: 200px; object-fit: cover; }
.about-badge {
  position: absolute;
  top: -16px;
  left: -16px;
  background: var(--white);
  padding: 12px 20px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--charcoal);
  display: flex;
  align-items: center;
  gap: 8px;
}
.about-content .section-tag { margin-bottom: 12px; }
.about-content .section-title { margin-bottom: 20px; }
.about-text {
  color: var(--text-light);
  font-size: 1rem;
  line-height: 1.75;
  margin-bottom: 16px;
}
.about-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 28px 0 32px;
}
.about-feature {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--charcoal-mid);
}
.about-feature svg { color: var(--terracotta); flex-shrink: 0; }

/* ─── PATIENTS ─── */
.patients { background: linear-gradient(135deg, var(--terracotta) 0%, var(--terracotta-dk) 100%); color: var(--white); }
.patients .section-tag { color: rgba(255,255,255,0.7); }
.patients .section-title { color: var(--white); }
.patients .section-desc { color: rgba(255,255,255,0.75); }
.patients-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.patient-card {
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius-lg);
  padding: 36px 24px;
  text-align: center;
  backdrop-filter: blur(8px);
  transition: var(--transition);
}
.patient-card:hover {
  background: rgba(255,255,255,0.16);
  transform: translateY(-4px);
}
.patient-num {
  font-family: var(--font-serif);
  font-size: 2.8rem;
  color: rgba(255,255,255,0.2);
  margin-bottom: 12px;
  line-height: 1;
}
.patient-card h3 {
  color: var(--white);
  font-size: 1.15rem;
  margin-bottom: 10px;
}
.patient-card p { color: rgba(255,255,255,0.7); font-size: 0.9rem; line-height: 1.6; }

/* ─── LOCATION ─── */
.location { background: var(--sand-lt); }
.location-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: stretch;
}
.location-info .section-tag { margin-bottom: 12px; }
.location-info .section-title { margin-bottom: 16px; }
.location-desc { color: var(--text-light); margin-bottom: 32px; font-size: 1.02rem; }
.location-details { display: flex; flex-direction: column; gap: 24px; }
.location-detail {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.location-detail svg { color: var(--terracotta); flex-shrink: 0; margin-top: 2px; }
.location-detail strong {
  display: block;
  font-size: 0.95rem;
  color: var(--charcoal);
  margin-bottom: 4px;
}
.location-detail span,
.location-detail a {
  font-size: 0.92rem;
  color: var(--text-light);
  line-height: 1.6;
}
.location-detail a:hover { color: var(--terracotta); }
.location-map { border-radius: var(--radius-lg); overflow: hidden; min-height: 400px; box-shadow: var(--shadow-md); }

/* ─── CONTACT ─── */
.contact { background: var(--cream); }
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}
.contact-info .section-tag { margin-bottom: 12px; }
.contact-info .section-title { margin-bottom: 16px; }
.contact-desc { color: var(--text-light); font-size: 1.02rem; margin-bottom: 28px; }
.contact-phone {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-serif);
  font-size: 1.4rem;
  color: var(--terracotta);
  transition: var(--transition);
}
.contact-phone:hover { color: var(--terracotta-dk); }
.contact-address {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  color: var(--text-light);
  font-size: 0.92rem;
}
.contact-address svg { color: var(--terracotta); flex-shrink: 0; }

/* Form */
.contact-form-wrap {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: 40px;
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(196,114,78,0.06);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--charcoal-mid);
  margin-bottom: 6px;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--sand-dk);
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--text);
  background: var(--sand-lt);
  transition: var(--transition);
  outline: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--terracotta);
  background: var(--white);
  box-shadow: 0 0 0 3px rgba(196,114,78,0.1);
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text-light); }
.form-note { text-align: center; font-size: 0.8rem; color: var(--text-light); margin-top: 12px; }

/* Success state */
.form-success {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 40px 20px;
  gap: 12px;
}
.form-success h3 { font-size: 1.5rem; color: var(--charcoal); }
.form-success p { color: var(--text-light); font-size: 0.95rem; }

/* ─── FOOTER ─── */
.site-footer {
  background: var(--charcoal);
  color: rgba(255,255,255,0.7);
  padding: 64px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
}
.footer-brand .logo-text { color: var(--white); }
.footer-brand p { margin-top: 16px; font-size: 0.92rem; line-height: 1.7; max-width: 300px; }
.footer-links strong,
.footer-contact strong {
  display: block;
  color: var(--white);
  font-size: 0.9rem;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.footer-links ul,
.footer-contact ul { display: flex; flex-direction: column; gap: 10px; }
.footer-links a,
.footer-contact a {
  font-size: 0.9rem;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 8px;
}
.footer-links a:hover,
.footer-contact a:hover { color: var(--terracotta-lt); }
.footer-contact svg { color: var(--terracotta-lt); flex-shrink: 0; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.4);
}

/* ─── REVEAL ANIMATIONS ─── */
.reveal {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
}
@media (prefers-reduced-motion: no-preference) {
  .reveal[data-reveal] {
    opacity: 0;
    transform: translateY(24px);
  }
  .reveal.visible {
    opacity: 1;
    transform: translateY(0);
  }
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; }
}

/* ─── RESPONSIVE ─── */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { order: -1; max-width: 480px; margin: 0 auto; }
  .hero-img-wrap img { height: 440px; }
  .hero-floating-card { left: 16px; }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .patients-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid { grid-template-columns: 1fr; gap: 48px; }
  .about-visual { max-width: 480px; }
  .location-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .section { padding: 72px 0; }
  .main-nav { display: none; }
  .mobile-toggle { display: flex; }
  .hero { padding-top: 80px; padding-bottom: 40px; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { justify-content: center; }
  .hero-stats { flex-wrap: wrap; gap: 16px; }
  .hero-floating-card { left: 16px; bottom: 16px; }
  .services-grid { grid-template-columns: 1fr; }
  .patients-grid { grid-template-columns: 1fr; }
  .about-img-secondary { width: 160px; right: -16px; bottom: -24px; }
  .about-features { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .contact-form-wrap { padding: 28px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .hero-img-wrap img { height: 340px; }
  .hero-floating-card { padding: 12px 16px; font-size: 0.82rem; }
}