/* ============================================
   Dr. Ruvan C. Wickramasinghe — Medical Practice
   Terracotta & Sand | Editorial Serif Design
   ============================================ */

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

:root {
  --terracotta: #B8543A;
  --terracotta-deep: #9A432E;
  --terracotta-light: #D4785E;
  --sand: #F5F0EB;
  --sand-dark: #E8DFD5;
  --sand-mid: #EDE5DA;
  --charcoal: #2A2420;
  --charcoal-light: #4A403A;
  --warm-gray: #7A6F67;
  --cream: #FDFBF8;
  --white: #FFFFFF;
  --font-serif: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 3px rgba(42, 36, 32, 0.08);
  --shadow-md: 0 4px 16px rgba(42, 36, 32, 0.1);
  --shadow-lg: 0 8px 32px rgba(42, 36, 32, 0.12);
  --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(--charcoal);
  background: var(--cream);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

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

/* --- Typography --- */
h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 500;
  line-height: 1.2;
  color: var(--charcoal);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 0.938rem;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid transparent;
  text-align: center;
}

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

.btn-primary:hover {
  background: var(--terracotta-deep);
  border-color: var(--terracotta-deep);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

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

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

.btn-outline-light {
  background: transparent;
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.6);
}

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

.btn-full {
  width: 100%;
}

/* --- Section Labels --- */
.section-label {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--terracotta);
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 20px;
  color: var(--charcoal);
}

.section-sub {
  font-size: 1.125rem;
  color: var(--warm-gray);
  max-width: 600px;
  line-height: 1.7;
}

/* ============================================
   NAVIGATION
   ============================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(253, 251, 248, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(42, 36, 32, 0.08);
  transition: var(--transition);
}

.nav.scrolled {
  box-shadow: var(--shadow-sm);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--charcoal);
}

.nav-logo-icon {
  color: var(--terracotta);
}

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

.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--charcoal-light);
  transition: var(--transition);
  position: relative;
}

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

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

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

.nav-cta {
  background: var(--terracotta) !important;
  color: var(--white) !important;
  padding: 10px 20px !important;
  border-radius: var(--radius-sm) !important;
  font-size: 0.875rem !important;
  transition: var(--transition) !important;
}

.nav-cta::after {
  display: none !important;
}

.nav-cta:hover {
  background: var(--terracotta-deep) !important;
  transform: translateY(-1px);
}

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

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

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

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

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

/* ============================================
   HERO
   ============================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  background: linear-gradient(
    135deg,
    #8B3A2A 0%,
    #B8543A 25%,
    #D4785E 50%,
    #E8A87C 70%,
    #F5C8A0 85%,
    #F5F0EB 100%
  );
  padding: 120px 24px 80px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: url('https://images.pexels.com/photos/4046948/pexels-photo-4046948.jpeg?auto=compress&cs=tinysrgb&fit=crop&w=1920&h=1080') center/cover no-repeat;
  opacity: 0.2;
  filter: saturate(0.6);
}

.hero-scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    160deg,
    rgba(139, 58, 42, 0.85) 0%,
    rgba(184, 84, 58, 0.7) 40%,
    rgba(212, 120, 94, 0.5) 70%,
    rgba(245, 200, 160, 0.3) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
}

.hero-eyebrow {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 24px;
}

.hero-headline {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 500;
  color: var(--white);
  line-height: 1.1;
  margin-bottom: 24px;
}

.hero-headline em {
  font-style: italic;
  color: #FDE8D8;
}

.hero-sub {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: rgba(255, 255, 255, 0.9);
  line-height: 1.7;
  max-width: 580px;
  margin: 0 auto 40px;
}

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

.hero-scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  animation: float 2s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(6px); }
}

/* ============================================
   SERVICES
   ============================================ */
.services {
  padding: 120px 0;
  background: var(--cream);
}

.services .section-label,
.services .section-title,
.services .section-sub {
  text-align: center;
}

.services .section-sub {
  margin: 0 auto 64px;
}

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

.service-card {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 40px 32px;
  border: 1px solid var(--sand-dark);
  transition: var(--transition);
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--terracotta-light);
}

.service-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--terracotta), var(--terracotta-light));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  margin-bottom: 24px;
}

.service-card h3 {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  margin-bottom: 12px;
  color: var(--charcoal);
}

.service-card p {
  font-size: 0.938rem;
  color: var(--warm-gray);
  line-height: 1.7;
}

/* ============================================
   ABOUT
   ============================================ */
.about {
  padding: 120px 0;
  background: var(--sand);
}

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

.about-image-wrap {
  position: relative;
}

.about-image-wrap img {
  width: 100%;
  height: 700px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.about-image-accent {
  position: absolute;
  bottom: -20px;
  right: -20px;
  width: 200px;
  height: 200px;
  background: var(--terracotta);
  border-radius: var(--radius-lg);
  z-index: -1;
  opacity: 0.15;
}

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

.about-content p {
  font-size: 1.05rem;
  color: var(--charcoal-light);
  line-height: 1.8;
  margin-bottom: 20px;
}

.about-stats {
  display: flex;
  gap: 40px;
  margin: 40px 0;
  padding: 32px 0;
  border-top: 1px solid var(--sand-dark);
  border-bottom: 1px solid var(--sand-dark);
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat-number {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 600;
  color: var(--terracotta);
  line-height: 1;
}

.stat-label {
  font-size: 0.813rem;
  color: var(--warm-gray);
  letter-spacing: 0.02em;
}

.about-content .btn {
  margin-top: 8px;
}

/* ============================================
   APPROACH
   ============================================ */
.approach {
  padding: 120px 0;
  background: var(--cream);
}

.approach .section-label,
.approach .section-title {
  text-align: center;
}

.approach .section-title {
  margin-bottom: 64px;
}

.approach-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 48px;
}

.approach-item {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 24px;
}

.approach-num {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--terracotta);
  opacity: 0.4;
  line-height: 1;
  padding-top: 4px;
}

.approach-item h3 {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  margin-bottom: 10px;
  color: var(--charcoal);
}

.approach-item p {
  font-size: 0.938rem;
  color: var(--warm-gray);
  line-height: 1.7;
}

/* ============================================
   TESTIMONIALS
   ============================================ */
.testimonials {
  padding: 120px 0;
  background: var(--charcoal);
}

.testimonials .section-label {
  color: var(--terracotta-light);
}

.testimonials .section-title {
  color: var(--white);
  text-align: center;
  margin-bottom: 64px;
}

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

.testimonial-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  padding: 40px 32px;
  transition: var(--transition);
}

.testimonial-card:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-4px);
}

.testimonial-quote {
  color: var(--terracotta-light);
  opacity: 0.6;
  margin-bottom: 20px;
}

.testimonial-text {
  font-size: 1rem;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 24px;
  font-style: italic;
}

.testimonial-author {
  font-size: 0.813rem;
  color: rgba(255, 255, 255, 0.5);
  letter-spacing: 0.02em;
}

/* ============================================
   CONTACT
   ============================================ */
.contact {
  padding: 120px 0;
  background: var(--sand);
}

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

.contact-intro {
  font-size: 1.05rem;
  color: var(--warm-gray);
  line-height: 1.7;
  margin-bottom: 40px;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.contact-detail {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.contact-detail svg {
  color: var(--terracotta);
  flex-shrink: 0;
  margin-top: 2px;
}

.contact-detail strong {
  display: block;
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: var(--charcoal);
  margin-bottom: 4px;
}

.contact-detail span,
.contact-detail a {
  font-size: 0.938rem;
  color: var(--warm-gray);
  line-height: 1.6;
}

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

.contact-form-wrap {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 48px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--sand-dark);
}

.contact-form h3 {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  margin-bottom: 32px;
  color: var(--charcoal);
}

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

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

.form-group label {
  display: block;
  font-size: 0.813rem;
  font-weight: 500;
  color: var(--charcoal-light);
  margin-bottom: 8px;
  letter-spacing: 0.02em;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--sand-dark);
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 0.938rem;
  color: var(--charcoal);
  background: var(--cream);
  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(184, 84, 58, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--sand-dark);
}

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

.form-notice {
  font-size: 0.813rem;
  color: var(--warm-gray);
  margin-top: 16px;
  text-align: center;
}

/* Success state */
.form-success {
  text-align: center;
  padding: 40px 20px;
}

.form-success svg {
  margin: 0 auto 20px;
}

.form-success h3 {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: var(--charcoal);
  margin-bottom: 12px;
}

.form-success p {
  font-size: 0.938rem;
  color: var(--warm-gray);
  margin-bottom: 24px;
}

/* ============================================
   MAP STRIP
   ============================================ */
.map-strip {
  height: 280px;
  background: var(--sand-dark);
}

.map-strip iframe {
  filter: saturate(0.5) brightness(1.05);
}

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

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 2fr;
  gap: 64px;
  padding-bottom: 64px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 16px;
}

.footer-logo svg {
  color: var(--terracotta-light);
}

.footer-brand p {
  font-size: 0.938rem;
  line-height: 1.7;
  max-width: 320px;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.footer-col strong {
  display: block;
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--white);
  margin-bottom: 20px;
}

.footer-col a {
  display: block;
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 12px;
  transition: var(--transition);
}

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

.footer-col span {
  display: block;
  font-size: 0.875rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.6);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 24px;
  padding: 32px 0;
  font-size: 0.813rem;
  color: rgba(255, 255, 255, 0.4);
}

.footer-legal {
  max-width: 400px;
  text-align: right;
  line-height: 1.6;
}

/* ============================================
   SCROLL REVEAL (progressive enhancement)
   ============================================ */
@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
  }

  .reveal.revealed {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Default visible state for reduced-motion or no-JS */
@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .testimonials-grid .testimonial-card:last-child {
    grid-column: span 2;
    max-width: 50%;
    justify-self: center;
  }

  .about-layout {
    gap: 48px;
  }

  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 48px;
  }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(253, 251, 248, 0.98);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    flex-direction: column;
    padding: 32px 24px;
    gap: 24px;
    border-bottom: 1px solid rgba(42, 36, 32, 0.08);
    transform: translateY(-120%);
    opacity: 0;
    transition: var(--transition);
    pointer-events: none;
  }

  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .nav-toggle {
    display: flex;
  }

  .hero {
    min-height: 100svh;
    padding: 100px 24px 80px;
  }

  .hero-headline {
    font-size: clamp(2rem, 8vw, 3rem);
  }

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

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

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

  .about-image-wrap img {
    height: 400px;
  }

  .about-image-accent {
    width: 120px;
    height: 120px;
    bottom: -10px;
    right: -10px;
  }

  .about-stats {
    gap: 24px;
  }

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

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

  .testimonials-grid .testimonial-card:last-child {
    grid-column: span 1;
    max-width: 100%;
  }

  .contact-layout {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .contact-form-wrap {
    padding: 32px 24px;
  }

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

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

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

  .footer-bottom {
    flex-direction: column;
    gap: 12px;
  }

  .footer-legal {
    text-align: left;
  }
}

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

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

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

  .about-stats {
    flex-wrap: wrap;
    gap: 20px;
  }

  .contact-form-wrap {
    padding: 24px 20px;
  }
}