@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:ital,wght@0,300;0,400;0,500;0,600;0,700;0,800;1,400;1,600&family=Source+Serif+4:ital,opsz,wght@0,8..60,400;0,8..60,600;1,8..60,400&display=swap');

/* ============================================================
   DASSDEV — Clinic Master Template Design System
   Visual Identity: Medical Precision, Trust, Serene Teal & Deep Navy
   ============================================================ */

:root {
  --clinic-bg: #f8fafc;
  --clinic-surface: #ffffff;
  --clinic-card-bg: #ffffff;
  --clinic-border: #e2e8f0;
  
  --clinic-navy: #0f172a;
  --clinic-navy-light: #1e293b;
  --clinic-blue: #0284c7;
  --clinic-teal: #0d9488;
  --clinic-teal-light: #14b8a6;
  --clinic-teal-pale: #f0fdfa;
  --clinic-blue-pale: #f0f9ff;
  
  --text-main: #0f172a;
  --text-muted: #64748b;
  --text-subtle: #94a3b8;
  
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-serif: 'Source Serif 4', Georgia, serif;
  
  --shadow-soft: 0 4px 20px -2px rgba(15, 23, 42, 0.05);
  --shadow-card: 0 10px 30px -4px rgba(15, 23, 42, 0.08);
  --shadow-hover: 0 20px 40px -4px rgba(13, 148, 136, 0.12);
  
  --transition-smooth: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--clinic-bg);
  color: var(--text-main);
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-sans);
  background-color: var(--clinic-bg);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Typography */
.font-serif {
  font-family: var(--font-serif);
}

/* Header & Nav */
.clinic-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  transition: var(--transition-smooth);
}

#main-nav {
  padding: 1.25rem 2.5rem;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--clinic-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: var(--transition-smooth);
}

#main-nav.scrolled {
  padding: 0.9rem 2.5rem;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
}

.clinic-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--clinic-navy);
  letter-spacing: -0.02em;
}

.clinic-cross-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--clinic-teal), var(--clinic-blue));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  box-shadow: 0 4px 12px rgba(13, 148, 136, 0.3);
}

.clinic-nav-links {
  display: flex;
  align-items: center;
  gap: 2.25rem;
  list-style: none;
}

.clinic-nav-links a {
  color: var(--clinic-navy-light);
  font-size: 0.92rem;
  font-weight: 500;
  text-decoration: none;
  transition: var(--transition-smooth);
  position: relative;
  padding: 0.3rem 0;
}

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

.btn-clinic-primary {
  background: linear-gradient(135deg, #0d9488, #0284c7);
  color: white;
  padding: 0.75rem 1.6rem;
  font-size: 0.88rem;
  font-weight: 600;
  border-radius: 6px;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: 0 4px 14px rgba(13, 148, 136, 0.25);
  transition: var(--transition-smooth);
}

.btn-clinic-primary:hover {
  box-shadow: 0 8px 22px rgba(13, 148, 136, 0.35);
  transform: translateY(-1px);
}

.btn-clinic-secondary {
  background: white;
  color: var(--clinic-navy);
  border: 1px solid var(--clinic-border);
  padding: 0.75rem 1.6rem;
  font-size: 0.88rem;
  font-weight: 600;
  border-radius: 6px;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: var(--shadow-soft);
  transition: var(--transition-smooth);
}

.btn-clinic-secondary:hover {
  border-color: var(--clinic-teal);
  color: var(--clinic-teal);
  background: var(--clinic-teal-pale);
}

/* Hamburger */
.clinic-hamburger {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  width: 32px;
  height: 32px;
  position: relative;
  z-index: 60;
  flex-direction: column;
  justify-content: space-around;
}

.clinic-hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--clinic-navy);
  transition: var(--transition-smooth);
}

.clinic-hamburger.open span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}
.clinic-hamburger.open span:nth-child(2) {
  opacity: 0;
}
.clinic-hamburger.open span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* Mobile Nav */
.clinic-mobile-panel {
  position: fixed;
  top: 0;
  right: -100%;
  width: 100%;
  height: 100vh;
  background-color: #ffffff;
  z-index: 55;
  transition: right 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 2.5rem;
}

.clinic-mobile-panel.open {
  right: 0;
}

.clinic-mobile-links {
  list-style: none;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.clinic-mobile-links a {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--clinic-navy);
  text-decoration: none;
}

/* Reveal animations */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.visible, .reveal-left.visible {
  opacity: 1;
  transform: translate(0, 0);
}

.delay-1 { transition-delay: 0.15s; }
.delay-2 { transition-delay: 0.3s; }
.delay-3 { transition-delay: 0.45s; }

/* Interactive Service Tabs */
.tab-btn {
  padding: 1rem 1.5rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-muted);
  background: white;
  border: 1px solid var(--clinic-border);
  border-radius: 8px;
  cursor: pointer;
  transition: var(--transition-smooth);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-align: left;
  width: 100%;
}

.tab-btn:hover {
  background: var(--clinic-teal-pale);
  color: var(--clinic-teal);
  border-color: var(--clinic-teal-light);
}

.tab-btn.active {
  background: linear-gradient(135deg, var(--clinic-navy), #1e293b);
  color: white;
  border-color: var(--clinic-navy);
  box-shadow: var(--shadow-card);
}

.tab-btn.active .tab-icon {
  background: var(--clinic-teal);
  color: white;
}

.tab-icon {
  width: 36px;
  height: 36px;
  border-radius: 6px;
  background: #f1f5f9;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clinic-teal);
  transition: var(--transition-smooth);
}

/* Service Panels */
[data-tab-panel] {
  display: none;
  opacity: 0;
  transition: opacity 0.4s ease;
}

[data-tab-panel].active {
  display: block;
  opacity: 1;
}

/* Medical Badges */
.med-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.9rem;
  border-radius: 9999px;
  background: var(--clinic-teal-pale);
  color: var(--clinic-teal);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* Cards */
.clinic-card {
  background: white;
  border: 1px solid var(--clinic-border);
  border-radius: 12px;
  box-shadow: var(--shadow-soft);
  transition: var(--transition-smooth);
}

.clinic-card:hover {
  box-shadow: var(--shadow-hover);
  border-color: rgba(13, 148, 136, 0.4);
  transform: translateY(-3px);
}

/* Responsive */
@media (max-width: 992px) {
  .clinic-nav-links, #main-nav .btn-clinic-primary {
    display: none;
  }
  .clinic-hamburger {
    display: flex;
  }
  #main-nav {
    padding: 1rem 1.5rem;
  }
}