:root {
  --color-primary: #0f766e;
  --color-primary-dark: #115e59;
  --color-primary-light: #14b8a6;
  --color-bg: #ffffff;
  --color-bg-alt: #f0fdfa;
  --color-text: #1f2937;
  --color-text-muted: #6b7280;
  --color-border: #e2e8f0;
  --radius: 12px;
  --shadow: 0 4px 16px rgba(15, 118, 110, 0.08);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-primary: #2dd4bf;
    --color-primary-dark: #14b8a6;
    --color-primary-light: #5eead4;
    --color-bg: #0f172a;
    --color-bg-alt: #16213a;
    --color-text: #e5e7eb;
    --color-text-muted: #9ca3af;
    --color-border: #26324a;
    --shadow: 0 4px 16px rgba(0, 0, 0, 0.35);
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
}

img,
svg {
  max-width: 100%;
}

a {
  color: var(--color-primary-dark);
}

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.9rem;
  padding-bottom: 0.9rem;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1.05rem;
  text-decoration: none;
  color: var(--color-text);
  white-space: nowrap;
}

.brand img {
  width: 30px;
  height: 30px;
  border-radius: 7px;
}

.brand small {
  display: block;
  font-weight: 400;
  font-size: 0.72rem;
  color: var(--color-text-muted);
}

.nav-toggle {
  display: none;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 1.4rem;
  overflow-x: auto;
}

.main-nav a {
  text-decoration: none;
  color: var(--color-text);
  font-size: 0.92rem;
  white-space: nowrap;
}

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

.nav-cta {
  background: var(--color-primary);
  color: #fff !important;
  padding: 0.45rem 0.9rem;
  border-radius: 999px;
  font-weight: 600;
}

@media (max-width: 720px) {
  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 8px;
    border: 1px solid var(--color-border);
    background: var(--color-bg);
    font-size: 1.1rem;
    cursor: pointer;
  }

  .main-nav {
    position: absolute;
    inset: 100% 0 auto 0;
    flex-direction: column;
    align-items: flex-start;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: 0.5rem 1.5rem 1.2rem;
    display: none;
  }

  .nav-toggle:checked ~ .main-nav {
    display: flex;
  }
}

/* Hero */
.hero {
  background: linear-gradient(180deg, var(--color-bg-alt), var(--color-bg) 70%);
  padding: 3.5rem 0 3rem;
  text-align: center;
}

.hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  margin: 0 0 0.4rem;
}

.hero .subtitle {
  color: var(--color-text-muted);
  font-size: 1.05rem;
  margin: 0 0 1.6rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.7rem 1.3rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--color-primary-dark);
}

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

.hero-note {
  margin-top: 1.4rem;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* Sections */
section {
  padding: 3.2rem 0;
  border-top: 1px solid var(--color-border);
}

section h2 {
  font-size: 1.6rem;
  margin: 0 0 0.2rem;
}

section .section-sub {
  color: var(--color-text-muted);
  margin: 0 0 1.6rem;
  font-size: 0.95rem;
}

.lang-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.2rem;
}

.lang-chips span {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  border-radius: 999px;
  padding: 0.3rem 0.8rem;
  font-size: 0.85rem;
}

/* Tables */
.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
  min-width: 480px;
}

th,
td {
  text-align: left;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--color-border);
}

thead th {
  background: var(--color-bg-alt);
  font-weight: 600;
}

tbody tr:last-child td {
  border-bottom: none;
}

.price {
  font-weight: 600;
  color: var(--color-primary-dark);
}

/* Doctors */
.doctor-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.2rem;
}

.doctor-card {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.4rem;
  box-shadow: var(--shadow);
}

.doctor-card .avatar {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: 0.8rem;
}

.doctor-card h3 {
  margin: 0 0 0.2rem;
  font-size: 1.05rem;
}

.doctor-card p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

/* Hours + location */
.hours-location {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 2rem;
}

@media (max-width: 720px) {
  .hours-location {
    grid-template-columns: 1fr;
  }
}

.info-card {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.4rem;
}

.info-card h3 {
  margin-top: 0;
  font-size: 1rem;
}

.info-card dl {
  margin: 0;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.4rem 1rem;
  font-size: 0.92rem;
}

.info-card dt {
  color: var(--color-text-muted);
}

.info-card dd {
  margin: 0;
}

/* FAQ */
details {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 0.9rem 1.1rem;
  margin-bottom: 0.7rem;
  background: var(--color-bg);
}

summary {
  cursor: pointer;
  font-weight: 600;
}

details p {
  margin: 0.6rem 0 0;
  color: var(--color-text-muted);
  font-size: 0.93rem;
}

details p.faq-en {
  font-style: italic;
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.2rem;
}

.contact-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.3rem;
}

.contact-card h3 {
  margin: 0 0 0.4rem;
  font-size: 0.95rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.contact-card p {
  margin: 0;
  font-size: 1.02rem;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 2rem 0;
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.88rem;
}

.site-footer .powered-by {
  margin-top: 0.4rem;
}

.demo-banner {
  background: var(--color-primary-dark);
  color: #fff;
  text-align: center;
  font-size: 0.82rem;
  padding: 0.5rem 1rem;
}

.demo-banner a {
  color: #fff;
  text-decoration: underline;
}