/* ===================================
   Acute Low Back Clinic — Styles
   =================================== */

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

:root {
  --terracotta: #B8603C;
  --terracotta-dark: #9A4E2E;
  --terracotta-light: #D4896A;
  --sand: #F5EDE4;
  --sand-light: #FAF6F1;
  --sand-dark: #E8D5C4;
  --charcoal: #2C2420;
  --charcoal-light: #4A3F38;
  --warm-gray: #8A7E76;
  --warm-gray-light: #B8AD A5;
  --white: #FFFFFF;
  --font-body: 'DM Sans', system-ui, sans-serif;
  --font-heading: 'Playfair Display', Georgia, serif;
  --max-width: 1200px;
  --radius: 12px;
  --radius-sm: 8px;
  --transition: 0.3s ease;
}

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

body {
  font-family: var(--font-body);
  color: var(--charcoal);
  background: var(--sand-light);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

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

a:hover {
  color: var(--terracotta-dark);
}

ul {
  list-style: none;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.text-center {
  text-align: center;
}

/* --- Skip Link --- */
.skip-link {
  position: absolute;
  top: -100%;
  left: 16px;
  background: var(--charcoal);
  color: var(--white);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  z-index: 1000;
  font-size: 0.875rem;
}

.skip-link:focus {
  top: 16px;
}

/* --- Typography --- */
.section-eyebrow {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--terracotta);
  margin-bottom: 12px;
}

.section-heading {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 400;
  line-height: 1.2;
  color: var(--charcoal);
  margin-bottom: 20px;
}

.section-lead {
  font-size: 1.0625rem;
  color: var(--warm-gray);
  max-width: 600px;
  line-height: 1.7;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 500;
  border-radius: 50px;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn--terracotta {
  background: var(--terracotta);
  color: var(--white);
  border-color: var(--terracotta);
}

.btn--terracotta:hover {
  background: var(--terracotta-dark);
  border-color: var(--terracotta-dark);
  color: var(--white);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(184, 96, 60, 0.25);
}

.btn--outline {
  background: transparent;
  color: var(--charcoal);
  border-color: var(--charcoal);
}

.btn--outline:hover {
  background: var(--charcoal);
  color: var(--white);
  transform: translateY(-1px);
}

.btn--light {
  background: var(--white);
  color: var(--terracotta);
  border-color: var(--white);
}

.btn--light:hover {
  background: var(--sand);
  color: var(--terracotta-dark);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}

.btn--ghost {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,0.5);
}

.btn--ghost:hover {
  background: rgba(255,255,255,0.1);
  border-color: var(--white);
  color: var(--white);
}

.btn--full {
  width: 100%;
  justify-content: center;
}

.btn--lg {
  padding: 16px 32px;
  font-size: 1rem;
}

.btn-icon {
  flex-shrink: 0;
}

/* --- Header --- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(250, 246, 241, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(184, 96, 60, 0.08);
  transition: box-shadow var(--transition);
}

.site-header.scrolled {
  box-shadow: 0 2px 20px rgba(44, 36, 32, 0.06);
}

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

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-size: 1.0625rem;
  color: var(--charcoal);
  font-weight: 500;
  text-decoration: none;
}

.logo--light {
  color: var(--white);
}

.logo--light:hover {
  color: var(--white);
}

.logo-icon {
  flex-shrink: 0;
}

.main-nav ul {
  display: flex;
  align-items: center;
  gap: 32px;
}

.main-nav a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--charcoal-light);
  text-decoration: none;
  position: relative;
  padding: 4px 0;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1.5px;
  background: var(--terracotta);
  transition: width var(--transition);
}

.main-nav a:hover::after,
.main-nav a:focus::after {
  width: 100%;
}

.main-nav a:hover {
  color: var(--charcoal);
}

/* --- Nav Toggle --- */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle-line {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--charcoal);
  transition: all var(--transition);
  transform-origin: center;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(1) {
  transform: rotate(45deg) translate(4px, 5px);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(3) {
  transform: rotate(-45deg) translate(4px, -5px);
}

/* --- Hero --- */
.hero {
  padding-top: 72px;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  background: var(--sand-light);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -20%;
  right: -10%;
  width: 60%;
  height: 140%;
  background: linear-gradient(135deg, var(--sand) 0%, var(--sand-dark) 100%);
  border-radius: 0 0 0 40%;
  z-index: 0;
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
  padding: 60px 0;
}

.hero-content {
  max-width: 520px;
}

.hero-eyebrow {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--terracotta);
  margin-bottom: 16px;
}

.hero-heading {
  font-family: var(--font-heading);
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  font-weight: 400;
  line-height: 1.15;
  color: var(--charcoal);
  margin-bottom: 24px;
}

.hero-heading em {
  font-style: italic;
  color: var(--terracotta);
}

.hero-sub {
  font-size: 1.0625rem;
  color: var(--warm-gray);
  line-height: 1.75;
  margin-bottom: 36px;
  max-width: 460px;
}

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

.hero-stats {
  display: flex;
  align-items: center;
  gap: 0;
}

.stat {
  flex: 1;
  text-align: left;
}

.stat-number {
  display: block;
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 500;
  color: var(--charcoal);
  line-height: 1.2;
}

.stat-label {
  font-size: 0.8125rem;
  color: var(--warm-gray);
  letter-spacing: 0.02em;
}

.stat-divider {
  flex: 0 0 1px;
  height: 36px;
  background: var(--sand-dark);
  margin: 0 24px;
}

.hero-image {
  position: relative;
}

.hero-img-wrapper {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 24px 64px rgba(44, 36, 32, 0.12);
}

.hero-img-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-accent {
  position: absolute;
  bottom: -20px;
  left: -20px;
  width: 120px;
  height: 120px;
  background: var(--terracotta);
  border-radius: var(--radius);
  z-index: -1;
  opacity: 0.15;
}

/* --- About --- */
.about {
  padding: 120px 0;
  background: var(--white);
}

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

.about-image {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 20px 48px rgba(44, 36, 32, 0.08);
}

.about-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.about-content .section-heading {
  margin-bottom: 24px;
}

.about-content p {
  color: var(--warm-gray);
  margin-bottom: 16px;
  font-size: 0.9375rem;
}

.about-values {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 32px;
  padding-top: 32px;
  border-top: 1px solid var(--sand-dark);
}

.value-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--charcoal-light);
}

.value-icon {
  color: var(--terracotta);
  flex-shrink: 0;
}

/* --- Services --- */
.services {
  padding: 120px 0;
  background: var(--sand-light);
}

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

.section-header .section-lead {
  margin: 0 auto;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 36px 28px;
  border: 1px solid rgba(184, 96, 60, 0.08);
  transition: all var(--transition);
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(44, 36, 32, 0.08);
  border-color: rgba(184, 96, 60, 0.15);
}

.service-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--sand);
  border-radius: var(--radius-sm);
  margin-bottom: 20px;
}

.service-card h3 {
  font-family: var(--font-heading);
  font-size: 1.1875rem;
  font-weight: 500;
  color: var(--charcoal);
  margin-bottom: 12px;
  line-height: 1.3;
}

.service-card p {
  font-size: 0.9375rem;
  color: var(--warm-gray);
  line-height: 1.7;
}

/* --- Approach --- */
.approach {
  padding: 120px 0;
  background: var(--white);
}

.approach-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.approach-content .section-heading {
  margin-bottom: 16px;
}

.approach-content .section-lead {
  margin-bottom: 40px;
}

.steps {
  counter-reset: step;
}

.step {
  display: flex;
  gap: 24px;
  padding: 24px 0;
  border-bottom: 1px solid var(--sand-dark);
  counter-increment: step;
}

.step:first-child {
  padding-top: 0;
}

.step:last-child {
  border-bottom: none;
}

.step-number {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--terracotta-light);
  line-height: 1.2;
  flex-shrink: 0;
  width: 40px;
}

.step-title {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--charcoal);
  margin-bottom: 6px;
}

.step-desc {
  font-size: 0.9375rem;
  color: var(--warm-gray);
  line-height: 1.65;
}

.approach-image {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 20px 48px rgba(44, 36, 32, 0.08);
}

.approach-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* --- Testimonials --- */
.testimonials {
  padding: 120px 0;
  background: var(--sand);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.testimonial-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 36px 28px;
  position: relative;
  border: 1px solid rgba(184, 96, 60, 0.06);
}

.testimonial-quote {
  position: absolute;
  top: 20px;
  right: 24px;
  width: 36px;
  height: 36px;
}

.testimonial-text {
  font-size: 0.9375rem;
  color: var(--charcoal-light);
  line-height: 1.75;
  margin-bottom: 20px;
  margin-top: 16px;
  font-style: italic;
}

.testimonial-author {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--terracotta);
  letter-spacing: 0.02em;
}

/* --- CTA --- */
.cta {
  padding: 100px 0;
  background: var(--charcoal);
  position: relative;
  overflow: hidden;
}

.cta::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 60%;
  height: 200%;
  background: radial-gradient(ellipse, rgba(184, 96, 60, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.cta-inner {
  text-align: center;
  position: relative;
  z-index: 1;
  max-width: 680px;
  margin: 0 auto;
}

.cta-eyebrow {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--terracotta-light);
  margin-bottom: 16px;
}

.cta-heading {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4.5vw, 3rem);
  font-weight: 400;
  color: var(--white);
  line-height: 1.2;
  margin-bottom: 20px;
}

.cta-sub {
  font-size: 1.0625rem;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 36px;
  line-height: 1.7;
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}

/* --- Visit --- */
.visit {
  padding: 120px 0;
  background: var(--sand-light);
}

.visit-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.visit-info .section-heading {
  margin-bottom: 32px;
}

.visit-details {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.visit-detail {
  display: flex;
  gap: 16px;
}

.visit-icon {
  color: var(--terracotta);
  flex-shrink: 0;
  margin-top: 2px;
}

.visit-detail strong {
  display: block;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--charcoal);
  margin-bottom: 4px;
}

.visit-detail p {
  font-size: 0.875rem;
  color: var(--warm-gray);
  line-height: 1.65;
}

.visit-map {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 16px 40px rgba(44, 36, 32, 0.08);
  min-height: 480px;
}

/* --- Contact --- */
.contact {
  padding: 120px 0;
  background: var(--white);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.contact-info .section-heading {
  margin-bottom: 16px;
}

.contact-info .section-lead {
  margin-bottom: 36px;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 0.9375rem;
  color: var(--charcoal-light);
}

.contact-item a {
  color: var(--charcoal-light);
  text-decoration: none;
  transition: color var(--transition);
}

.contact-item a:hover {
  color: var(--terracotta);
}

.contact-icon {
  color: var(--terracotta);
  flex-shrink: 0;
}

/* --- Form --- */
.contact-form-wrapper {
  background: var(--sand-light);
  border-radius: var(--radius);
  padding: 40px;
  border: 1px solid var(--sand-dark);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

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

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--charcoal);
  letter-spacing: 0.02em;
}

.form-group input,
.form-group select,
.form-group textarea {
  font-family: var(--font-body);
  font-size: 0.9375rem;
  color: var(--charcoal);
  background: var(--white);
  border: 1.5px solid var(--sand-dark);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  transition: border-color var(--transition);
  outline: none;
  width: 100%;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--terracotta);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--warm-gray-light);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-note {
  font-size: 0.8125rem;
  color: var(--warm-gray);
  text-align: center;
}

.form-success {
  text-align: center;
  padding: 40px 20px;
}

.form-success h3 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--charcoal);
  margin: 16px 0 8px;
}

.form-success p {
  font-size: 0.9375rem;
  color: var(--warm-gray);
  line-height: 1.65;
}

/* --- Footer --- */
.site-footer {
  background: var(--charcoal);
  color: rgba(255, 255, 255, 0.7);
  padding: 80px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  padding-bottom: 60px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand p {
  font-size: 0.875rem;
  line-height: 1.7;
  margin-top: 16px;
  max-width: 280px;
}

.footer-links h4,
.footer-contact h4 {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 500;
  color: var(--white);
  margin-bottom: 20px;
}

.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.6);
  text-decoration: none;
  transition: color var(--transition);
}

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

.footer-contact p {
  font-size: 0.875rem;
  line-height: 1.7;
}

.footer-contact a {
  color: var(--terracotta-light);
  text-decoration: none;
}

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

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  padding: 24px 0;
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.4);
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.4);
}

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

/* --- Back to Top --- */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px;
  height: 44px;
  background: var(--terracotta);
  color: var(--white);
  border: none;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all var(--transition);
  z-index: 50;
  box-shadow: 0 4px 16px rgba(184, 96, 60, 0.3);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--terracotta-dark);
  transform: translateY(-2px);
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .hero-grid,
  .about-grid,
  .approach-grid,
  .visit-grid,
  .contact-grid {
    gap: 48px;
  }

  .services-grid,
  .testimonials-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
    z-index: 101;
  }

  .main-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    height: 100dvh;
    background: var(--sand-light);
    padding: 100px 32px 32px;
    transition: right var(--transition);
    box-shadow: -8px 0 32px rgba(44, 36, 32, 0.1);
    z-index: 100;
  }

  .main-nav.open {
    right: 0;
  }

  .main-nav ul {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .main-nav a {
    font-size: 1rem;
    padding: 12px 0;
    display: block;
  }

  .main-nav .btn {
    margin-top: 16px;
  }

  .hero {
    min-height: auto;
    padding-top: 100px;
    padding-bottom: 60px;
  }

  .hero::before {
    display: none;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
    padding: 0;
  }

  .hero-content {
    max-width: 100%;
  }

  .hero-image {
    order: -1;
  }

  .hero-img-wrapper {
    border-radius: var(--radius-sm);
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    justify-content: center;
  }

  .hero-stats {
    flex-wrap: wrap;
    gap: 16px;
  }

  .stat-divider {
    display: none;
  }

  .stat {
    flex: none;
  }

  .about,
  .services,
  .approach,
  .testimonials,
  .visit,
  .contact {
    padding: 80px 0;
  }

  .about-grid,
  .approach-grid,
  .visit-grid,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .about-image,
  .approach-image {
    order: -1;
  }

  .services-grid,
  .testimonials-grid {
    grid-template-columns: 1fr;
  }

  .about-values {
    grid-template-columns: 1fr;
  }

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

  .contact-form-wrapper {
    padding: 24px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .cta-actions {
    flex-direction: column;
    align-items: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .section-heading {
    font-size: 1.625rem;
  }

  .hero-heading {
    font-size: 1.875rem;
  }

  .service-card {
    padding: 28px 20px;
  }
}

/* --- Reduced Motion --- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }

  .back-to-top {
    transition: none;
  }
}