:root {
  --primary-color: #0b3d91;
  --primary-light: #185abc;
  --secondary-color: #0077b6;
  --accent-color: #d32f2f;
  --accent-hover: #b71c1c;
  --bg-color: #ffffff;
  --bg-light: #f4f7f6;
  --text-main: #333333;
  --text-light: #666666;
  --text-muted: #999999;
  --white: #ffffff;
  --font-primary: 'Inter', sans-serif;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
  --border-radius: 8px;
  --box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
  --box-shadow-hover: 0 10px 20px rgba(0, 0, 0, 0.1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  color: var(--text-main);
  line-height: 1.6;
  font-size: 16px;
  background-color: var(--bg-color);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: var(--spacing-sm);
  line-height: 1.2;
}

h1 { font-size: 2.5rem; }
@media (min-width: 768px) { h1 { font-size: 3.5rem; } }

h2 { font-size: 2rem; }
@media (min-width: 768px) { h2 { font-size: 2.5rem; } }

h3 { font-size: 1.5rem; }
@media (min-width: 768px) { h3 { font-size: 1.75rem; } }

p {
  margin-bottom: var(--spacing-md);
  color: var(--text-light);
}

a {
  text-decoration: none;
  color: var(--primary-color);
  transition: color 0.3s ease;
}
a:hover {
  color: var(--accent-color);
}

/* Layout */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}
@media (min-width: 768px) {
  .container {
    padding: 0 var(--spacing-md);
  }
}

section { padding: var(--spacing-xl) 0; }

.section-light { 
  background-color: var(--bg-light); 
}

/* Services Section Specific Styles */
#services {
  background: linear-gradient(135deg, #f0f5fa 0%, #dce8f4 100%);
  position: relative;
  z-index: 1;
}
#services::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background-image: url("data:image/svg+xml,%3Csvg width='200' height='100' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M 0 50 L 40 50 L 50 20 L 70 90 L 90 10 L 110 70 L 120 50 L 200 50' stroke='%230b3d91' stroke-width='2' fill='none' opacity='0.06'/%3E%3C/svg%3E");
  background-size: 200px 100px;
  z-index: -1;
}
.section-dark {
  background-color: var(--primary-color);
  color: var(--white);
}
.section-dark h1, .section-dark h2, .section-dark h3, .section-dark h4, .section-dark p {
  color: var(--white);
}
.section-dark .card h1, .section-dark .card h2, .section-dark .card h3, .section-dark .card h4, .section-dark .card p, .section-dark .card ul, .section-dark .card li {
  color: var(--text-main);
}
.section-dark .card .card-title {
  color: var(--primary-color);
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
}
@media (min-width: 768px) {
  .grid-2 {
    grid-template-columns: repeat(2, 1fr);
    align-items: center;
  }
}

.grid-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
}
@media (min-width: 768px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 992px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
}

.text-center { text-align: center; }
.section-header {
  margin-bottom: var(--spacing-lg);
  text-align: center;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: var(--border-radius);
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s ease;
  border: 2px solid transparent;
}
.btn.btn-primary {
  background-color: var(--accent-color);
  color: var(--white);
}
.btn.btn-primary:hover {
  background-color: var(--accent-hover);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: var(--box-shadow);
}
.btn.btn-outline {
  background-color: transparent;
  color: var(--primary-color);
  border-color: var(--primary-color);
}
.btn.btn-outline:hover {
  background-color: var(--primary-color);
  color: var(--white);
  transform: translateY(-2px);
}
.btn.btn-outline.light {
  color: var(--white);
  border-color: var(--white);
}
.btn.btn-outline.light:hover {
  background-color: var(--white);
  color: var(--primary-color);
}
.btn.btn-block {
  display: block;
  width: 100%;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  box-shadow: var(--box-shadow);
  padding: var(--spacing-sm) 0;
}
.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.header .logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.header .logo:hover {
  color: var(--primary-color);
}
.header .logo .logo-icon { font-size: 1.8rem; }
.header .logo .logo-light {
  font-weight: 300;
  color: var(--secondary-color);
}

/* Navigation */
.nav-list { list-style: none; }
.nav-list a {
  font-weight: 500;
  color: var(--text-main);
}
.nav-list a:hover {
  color: var(--primary-color);
}
.nav-list a.btn { color: var(--white); }
.nav-list a.btn:hover { color: var(--white); }

@media (min-width: 768px) {
  .nav-list {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
  }
}
@media (max-width: 767.98px) {
  .nav {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background-color: var(--white);
    display: flex;
    flex-direction: column;
    padding: var(--spacing-md);
    transition: left 0.3s ease;
  }
  .nav.active { left: 0; }
  .nav-list {
    display: flex;
    flex-direction: column;
    width: 100%;
  }
  .nav-list li {
    margin-bottom: var(--spacing-md);
    text-align: center;
  }
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}
.mobile-menu-toggle span {
  display: block;
  width: 25px;
  height: 3px;
  background-color: var(--primary-color);
  transition: all 0.3s ease;
}
@media (max-width: 767.98px) {
  .mobile-menu-toggle {
    display: flex;
    flex-direction: column;
    gap: 6px;
  }
}
.mobile-menu-toggle.active span:nth-child(1) {
  transform: translateY(9px) rotate(45deg);
}
.mobile-menu-toggle.active span:nth-child(2) {
  opacity: 0;
}
.mobile-menu-toggle.active span:nth-child(3) {
  transform: translateY(-9px) rotate(-45deg);
}

/* Cards */
.card {
  background: linear-gradient(to bottom, #ffffff 0%, #f9fbfc 100%);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  box-shadow: var(--box-shadow);
  transition: all 0.3s ease;
  height: 100%;
  border-top: 4px solid var(--primary-light);
  position: relative;
  overflow: hidden;
}
.card::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 100px;
  height: 100px;
  background: radial-gradient(circle, rgba(11, 61, 145, 0.05) 0%, rgba(255,255,255,0) 70%);
  border-radius: 50%;
  transform: translate(30%, -30%);
}
.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--box-shadow-hover);
  border-top-color: var(--accent-color);
}
.card-icon {
  font-size: 2.8rem;
  color: var(--accent-color);
  margin-bottom: var(--spacing-sm);
  display: inline-block;
  padding: 10px;
  background: rgba(211, 47, 47, 0.05);
  border-radius: 50%;
}
.card-title {
  margin-bottom: var(--spacing-xs);
  color: var(--primary-color);
}

.card p {
  color: var(--text-light);
}

.card ul {
  color: var(--text-light);
}

/* Card Content Modifiers */
/* Echo (Heart) - Red accent */
.card-echo { border-top-color: #d32f2f; }
.card-echo .card-icon { background: rgba(211, 47, 47, 0.08); }
.card-echo::after { background: radial-gradient(circle, rgba(211, 47, 47, 0.05) 0%, rgba(255,255,255,0) 70%); }
.card-echo:hover { border-top-color: #b71c1c; }

/* ECG (Chart) - Blue accent */
.card-ecg { border-top-color: #0288d1; }
.card-ecg .card-icon { background: rgba(2, 136, 209, 0.08); }
.card-ecg::after { background: radial-gradient(circle, rgba(2, 136, 209, 0.05) 0%, rgba(255,255,255,0) 70%); }
.card-ecg:hover { border-top-color: #01579b; }

/* Stress Test (Runner) - Orange accent */
.card-stress { border-top-color: #f57c00; }
.card-stress .card-icon { background: rgba(245, 124, 0, 0.08); }
.card-stress::after { background: radial-gradient(circle, rgba(245, 124, 0, 0.05) 0%, rgba(255,255,255,0) 70%); }
.card-stress:hover { border-top-color: #e65100; }

/* Pacemaker (Battery) - Green accent */
.card-pacemaker { border-top-color: #388e3c; }
.card-pacemaker .card-icon { background: rgba(56, 142, 60, 0.08); }
.card-pacemaker::after { background: radial-gradient(circle, rgba(56, 142, 60, 0.05) 0%, rgba(255,255,255,0) 70%); }
.card-pacemaker:hover { border-top-color: #1b5e20; }

/* Holter (Stopwatch) - Purple accent */
.card-holter { border-top-color: #7b1fa2; }
.card-holter .card-icon { background: rgba(123, 31, 162, 0.08); }
.card-holter::after { background: radial-gradient(circle, rgba(123, 31, 162, 0.05) 0%, rgba(255,255,255,0) 70%); }
.card-holter:hover { border-top-color: #4a148c; }

/* Consultations (Stethoscope) - Teal accent */
.card-consult { border-top-color: #00897b; }
.card-consult .card-icon { background: rgba(0, 137, 123, 0.08); }
.card-consult::after { background: radial-gradient(circle, rgba(0, 137, 123, 0.05) 0%, rgba(255,255,255,0) 70%); }
.card-consult:hover { border-top-color: #004d40; }

/* Staffing Solutions - Indigo accent */
.card-staffing { 
    border-top-color: #3949ab; 
    background-image: linear-gradient(rgba(255, 255, 255, 0.85), rgba(255, 255, 255, 0.95)), url('../images/staffing_solutions.png');
    background-size: cover;
    background-position: center;
}
.card-staffing .card-icon { background: rgba(57, 73, 171, 0.08); }
.card-staffing::after { background: radial-gradient(circle, rgba(57, 73, 171, 0.05) 0%, rgba(255,255,255,0) 70%); }
.card-staffing:hover { border-top-color: #1a237e; }

/* Turnkey Setup - Blue Grey accent */
.card-setup { 
    border-top-color: #546e7a; 
    background-image: linear-gradient(rgba(255, 255, 255, 0.85), rgba(255, 255, 255, 0.95)), url('../images/clinic_setup.jpg');
    background-size: cover;
    background-position: center;
}
.card-setup .card-icon { background: rgba(84, 110, 122, 0.08); }
.card-setup::after { background: radial-gradient(circle, rgba(84, 110, 122, 0.05) 0%, rgba(255,255,255,0) 70%); }
.card-setup:hover { border-top-color: #263238; }

/* Hero Section */
.hero {
  padding-top: 120px;
  padding-bottom: var(--spacing-xl);
  background: linear-gradient(135deg, var(--bg-light) 0%, var(--white) 100%);
  position: relative;
  overflow: hidden;
}
.hero-content {
  position: relative;
  z-index: 2;
}
.hero-image {
  position: relative;
  z-index: 2;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow-hover);
  overflow: hidden;
}
.hero-image img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.5s ease;
}
.hero-image img:hover {
  transform: scale(1.05);
}
.hero-btns {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
  margin-top: var(--spacing-md);
}
.hero::before {
  content: '';
  position: absolute;
  top: -100px;
  right: -100px;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background-color: rgba(11, 61, 145, 0.05);
  z-index: 1;
}

/* Form */
.form-group {
  margin-bottom: var(--spacing-sm);
}
.form-group label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 500;
}
.form-group input, .form-group select, .form-group textarea {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid #ddd;
  border-radius: var(--border-radius);
  font-family: var(--font-primary);
  transition: border-color 0.3s ease;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(11, 61, 145, 0.1);
}

/* Footer */
.footer {
  background-color: var(--primary-color);
  color: var(--white);
  padding: var(--spacing-xl) 0 var(--spacing-md);
}
.footer .footer-col h3 {
  color: var(--white);
  margin-bottom: var(--spacing-sm);
}
.footer .footer-col p {
  color: rgba(255, 255, 255, 0.8);
}
.footer .footer-col ul {
  list-style: none;
}
.footer .footer-col ul li {
  margin-bottom: var(--spacing-xs);
}
.footer .footer-col ul li a {
  color: rgba(255, 255, 255, 0.8);
  transition: all 0.3s ease;
}
.footer .footer-col ul li a:hover {
  color: var(--white);
  padding-left: 5px;
}
.footer .footer-bottom {
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-md);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.9rem;
}