/* ===========================================================
   Nova Nephrology — Shared Stylesheet
   Calming, trustworthy, accessible medical design system
   =========================================================== */

:root {
  --color-primary: #1c6e8c;
  --color-primary-dark: #124b61;
  --color-primary-light: #eaf4f7;
  --color-secondary: #4f9d69;
  --color-secondary-dark: #397a4d;
  --color-accent: #e8f4f2;
  --color-bg: #fbfdfd;
  --color-bg-alt: #f2f8f7;
  --color-text: #223338;
  --color-text-light: #52666c;
  --color-white: #ffffff;
  --color-border: #dfe9ea;
  --font-heading: 'Poppins', 'Segoe UI', sans-serif;
  --font-body: 'Inter', 'Segoe UI', sans-serif;
  --radius: 14px;
  --shadow-soft: 0 8px 30px rgba(18, 75, 97, 0.08);
  --shadow-med: 0 14px 40px rgba(18, 75, 97, 0.14);
  --max-width: 1180px;
  --transition: 0.35s cubic-bezier(.4,0,.2,1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.65;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  color: var(--color-primary-dark);
  line-height: 1.25;
  margin: 0 0 .6em;
  font-weight: 600;
}

h1 { font-size: clamp(2rem, 4.2vw, 3.1rem); font-weight: 700; }
h2 { font-size: clamp(1.6rem, 3vw, 2.3rem); }
h3 { font-size: clamp(1.15rem, 2vw, 1.5rem); }

p { margin: 0 0 1em; color: var(--color-text-light); }

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

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

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

section { padding: 90px 0; position: relative; }
section.alt { background: var(--color-bg-alt); }

.eyebrow {
  display: inline-block;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  font-size: .8rem;
  font-weight: 700;
  color: var(--color-secondary-dark);
  background: rgba(79,157,105,0.12);
  padding: 6px 14px;
  border-radius: 30px;
  margin-bottom: 18px;
}

.section-head { max-width: 720px; margin: 0 auto 50px; text-align: center; }
.section-head p { font-size: 1.05rem; }

/* ---------- Buttons (high contrast, accessible) ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 15px 30px;
  border-radius: 50px;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  border: 2px solid transparent;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
  text-align: center;
}
.btn:focus-visible {
  outline: 3px solid #ffb703;
  outline-offset: 3px;
}
.btn-primary {
  background: var(--color-primary);
  color: #ffffff;
}
.btn-primary:hover { background: var(--color-primary-dark); transform: translateY(-2px); box-shadow: var(--shadow-med); }
.btn-secondary {
  background: #ffffff;
  color: var(--color-primary-dark);
  border-color: var(--color-primary);
}
.btn-secondary:hover { background: var(--color-primary-light); transform: translateY(-2px); }
.btn-light {
  background: #ffffff;
  color: var(--color-primary-dark);
}
.btn-light:hover { background: var(--color-accent); transform: translateY(-2px); }
.btn-block { width: 100%; }

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(251,253,253,0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  max-width: var(--max-width);
  margin: 0 auto;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--color-primary-dark);
  font-size: 1.25rem;
}
.brand .brand-mark {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 700; font-size: 1.1rem;
  flex-shrink: 0;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
  margin: 0; padding: 0;
}
.nav-links a {
  color: var(--color-text);
  font-weight: 500;
  font-size: .97rem;
  padding: 6px 2px;
  border-bottom: 2px solid transparent;
  transition: border-color var(--transition), color var(--transition);
}
.nav-links a:hover { color: var(--color-primary); border-color: var(--color-secondary); }

.nav-right { display: flex; align-items: center; gap: 16px; }

/* Language selector */
.lang-select {
  position: relative;
}
.lang-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--color-white);
  border: 2px solid var(--color-primary);
  color: var(--color-primary-dark);
  font-weight: 600;
  font-family: var(--font-heading);
  padding: 8px 14px;
  border-radius: 30px;
  cursor: pointer;
  font-size: .92rem;
}
.lang-btn:hover { background: var(--color-primary-light); }
.lang-menu {
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  box-shadow: var(--shadow-med);
  min-width: 190px;
  padding: 8px;
  display: none;
  flex-direction: column;
  gap: 2px;
  z-index: 1100;
}
.lang-select.open .lang-menu { display: flex; }
.lang-menu a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 12px;
  border-radius: 8px;
  color: var(--color-text);
  font-size: .95rem;
}
.lang-menu a:hover { background: var(--color-accent); }
.lang-menu a.active { background: var(--color-primary-light); font-weight: 700; color: var(--color-primary-dark); }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.nav-toggle span {
  display: block;
  width: 26px;
  height: 3px;
  margin: 5px 0;
  background: var(--color-primary-dark);
  border-radius: 2px;
  transition: var(--transition);
}

/* ---------- Hero ---------- */
.hero {
  padding: 70px 0 90px;
  background:
    radial-gradient(circle at 85% 15%, rgba(79,157,105,0.14), transparent 45%),
    radial-gradient(circle at 10% 90%, rgba(28,110,140,0.12), transparent 45%),
    var(--color-bg);
  overflow: hidden;
}
.hero .container {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 50px;
  align-items: center;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-accent);
  color: var(--color-secondary-dark);
  font-weight: 700;
  font-size: .85rem;
  padding: 8px 16px;
  border-radius: 30px;
  margin-bottom: 22px;
}
.hero h1 { margin-bottom: 20px; }
.hero .lead { font-size: 1.15rem; color: var(--color-text-light); max-width: 560px; }
.hero-ctas { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 30px; }
.hero-note {
  margin-top: 24px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: .92rem;
  color: var(--color-text-light);
}
.hero-note strong { color: var(--color-primary-dark); }

.hero-photos {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  gap: 18px;
}
.hero-photo-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 10px;
  box-shadow: var(--shadow-soft);
  text-align: center;
  width: 48%;
  flex-shrink: 0;
  transition: transform var(--transition);
}
.hero-photo-card:hover { transform: translateY(-6px); }
.hero-photo-card img {
  border-radius: 10px;
  width: 100%;
  aspect-ratio: 3/4;
  object-fit: cover;
  object-position: top center;
}
.hero-photo-card:first-child { margin-top: 34px; }
.hero-photo-card span {
  display: block;
  margin-top: 10px;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: .92rem;
  color: var(--color-primary-dark);
}

/* ---------- About ---------- */
.about-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 50px;
}
.about-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 32px 26px;
  box-shadow: var(--shadow-soft);
  border-top: 4px solid var(--color-secondary);
}
.about-card .icon {
  width: 52px; height: 52px;
  border-radius: 12px;
  background: var(--color-accent);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 16px;
}

/* ---------- Doctors ---------- */
.doctors-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 34px;
  margin-top: 20px;
}
.doctor-card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
  display: flex;
  flex-direction: column;
  transition: transform var(--transition), box-shadow var(--transition);
}
.doctor-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-med); }
.doctor-photo-wrap {
  background: linear-gradient(160deg, var(--color-primary-light), var(--color-accent));
  padding: 28px 28px 0;
  display: flex;
  justify-content: center;
}
.doctor-photo-wrap img {
  width: 190px;
  height: 190px;
  object-fit: cover;
  object-position: top center;
  border-radius: 50%;
  border: 5px solid #fff;
  box-shadow: var(--shadow-soft);
}
.doctor-body { padding: 26px 30px 32px; }
.doctor-body h3 { margin-bottom: 2px; }
.doctor-title { color: var(--color-secondary-dark); font-weight: 700; font-size: .92rem; margin-bottom: 14px; }
.doctor-tags { display: flex; flex-wrap: wrap; gap: 8px; margin: 14px 0 16px; }
.tag {
  background: var(--color-accent);
  color: var(--color-primary-dark);
  font-size: .82rem;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: 30px;
}
.doctor-list { padding-left: 18px; margin: 12px 0; color: var(--color-text-light); }
.doctor-list li { margin-bottom: 6px; }

/* ---------- Services ---------- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  margin-top: 20px;
}
.service-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 26px 24px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-soft);
  border-color: var(--color-secondary);
}

/* ---------- Why choose us ---------- */
.why-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
  margin-top: 20px;
}
.why-item {
  display: flex;
  gap: 16px;
  background: #fff;
  padding: 22px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
}
.why-item .check {
  flex-shrink: 0;
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--color-secondary);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700;
}
.why-item h4 { margin-bottom: 4px; font-size: 1.05rem; }
.why-item p { margin: 0; font-size: .95rem; }

/* ---------- Resources ---------- */
.resources-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 20px;
}
.resource-card {
  background: var(--color-primary-dark);
  background: linear-gradient(160deg, var(--color-primary), var(--color-primary-dark));
  color: #fff;
  border-radius: var(--radius);
  padding: 26px 22px;
  min-height: 170px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.resource-card h4 { color: #fff; margin-bottom: 8px; }
.resource-card p { color: rgba(255,255,255,0.85); font-size: .92rem; margin: 0; }

/* ---------- Languages ---------- */
.languages-strip {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 30px;
}
.lang-chip {
  background: #fff;
  border: 2px solid var(--color-border);
  padding: 14px 26px;
  border-radius: 40px;
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--color-primary-dark);
  display: flex;
  align-items: center;
  gap: 10px;
}
.lang-chip .dot { width: 10px; height: 10px; border-radius: 50%; background: var(--color-secondary); }

/* ---------- Contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  margin-top: 20px;
  align-items: stretch;
}
.contact-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 34px;
  box-shadow: var(--shadow-soft);
}
.contact-row {
  display: flex;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--color-border);
}
.contact-row:last-child { border-bottom: none; }
.contact-row .ic {
  width: 42px; height: 42px;
  border-radius: 10px;
  background: var(--color-accent);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  font-size: 1.15rem;
}
.contact-row strong { display: block; color: var(--color-primary-dark); font-family: var(--font-heading); }
.map-embed {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
  min-height: 340px;
  border: 1px solid var(--color-border);
}
.map-embed iframe { width: 100%; height: 100%; min-height: 340px; border: 0; }

/* ---------- Final CTA ---------- */
.final-cta {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary-dark));
  color: #fff;
  text-align: center;
  border-radius: var(--radius);
  padding: 60px 30px;
  margin: 0 24px;
}
.final-cta h2 { color: #fff; }
.final-cta p { color: rgba(255,255,255,0.9); max-width: 600px; margin: 0 auto 26px; }
.final-cta .btn-primary { background: #fff; color: var(--color-primary-dark); }
.final-cta .btn-primary:hover { background: #eef8f5; }

/* ---------- Footer ---------- */
footer.site-footer {
  background: var(--color-primary-dark);
  color: rgba(255,255,255,0.85);
  padding: 50px 0 24px;
  font-size: .92rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 30px;
  padding-bottom: 30px;
  border-bottom: 1px solid rgba(255,255,255,0.15);
}
.footer-grid h4 { color: #fff; font-size: 1rem; margin-bottom: 14px; }
.footer-grid a { color: rgba(255,255,255,0.78); display: block; margin-bottom: 8px; }
.footer-grid a:hover { color: #fff; }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  padding-top: 20px;
  font-size: .82rem;
  color: rgba(255,255,255,0.6);
}

/* ---------- Reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: .1s; }
.reveal-delay-2 { transition-delay: .2s; }
.reveal-delay-3 { transition-delay: .3s; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- Skip link ---------- */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-primary-dark);
  color: #fff;
  padding: 12px 18px;
  z-index: 2000;
  border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .hero .container { grid-template-columns: 1fr; }
  .hero-photos { margin-top: 10px; max-width: 420px; margin-left: auto; margin-right: auto; }
  .about-grid { grid-template-columns: 1fr; }
  .doctors-grid { grid-template-columns: 1fr; }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .why-grid { grid-template-columns: 1fr; }
  .resources-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 760px) {
  section { padding: 60px 0; }
  .nav-links { display: none; }
  .nav-toggle { display: block; }
  .services-grid { grid-template-columns: 1fr; }
  .resources-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-ctas { flex-direction: column; align-items: stretch; }
  .hero-ctas .btn { width: 100%; }
}

/* Mobile nav open state */
body.nav-open .nav-links {
  display: flex;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: #fff;
  flex-direction: column;
  padding: 20px 24px 26px;
  gap: 16px;
  box-shadow: var(--shadow-med);
  border-bottom: 1px solid var(--color-border);
}