/* Nursing Network - Theme Styles */
/* Mobile-First Design System */

:root {
  --primary: #005ea2;
  --primary-dark: #1a4480;
  --primary-light: #e8f2fc;
  --accent: #0071bc;
  --success: #00a91c;
  --bg-light: #f8fafc;
  --text-dark: #1b1b1b;
  --text-muted: #71767a;
  --white: #ffffff;
  --border-color: #e5e5e5;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
}

/* Base */
body {
  font-family: 'Source Sans Pro', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--text-dark);
  line-height: 1.6;
  font-size: 18px;
  margin: 0;
}

/* Navigation */
.nav-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255,255,255,0.98);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  text-decoration: none;
}

.logo-primary { color: var(--primary-dark); }
.logo-accent { color: var(--primary); }

.nav-links {
  display: none;
  gap: 2rem;
  list-style: none;
  margin: 0;
  padding: 0;
  align-items: center;
}

.nav-links.active {
  display: flex;
}

.nav-links a {
  color: var(--text-dark);
  text-decoration: none;
  font-weight: 600;
  font-size: 1.1rem;
  transition: color 0.2s;
}

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

.menu-toggle {
  display: inline-flex;
  padding: 0.75rem 1.25rem;
  font-size: 1rem;
  font-weight: 600;
  background: var(--white);
  color: var(--primary);
  border: 2px solid var(--primary);
  border-radius: 10px;
  cursor: pointer;
}

@media (min-width: 768px) {
  .nav-links { display: flex; }
  .menu-toggle { display: none; }
}

/* Mobile Menu Overlay */
.mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0,0,0,0.5);
  z-index: 999;
}

.mobile-menu.active {
  display: block;
}

.mobile-menu-content {
  position: absolute;
  top: 0;
  right: 0;
  width: 280px;
  height: 100%;
  background: var(--white);
  padding: 1.5rem;
  box-shadow: var(--shadow-lg);
}

.mobile-menu-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
}

.mobile-menu-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-muted);
}

.mobile-menu-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.mobile-menu-links li {
  margin-bottom: 1.5rem;
}

.mobile-menu-links a {
  display: block;
  color: var(--text-dark);
  text-decoration: none;
  font-size: 1.25rem;
  font-weight: 600;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border-color);
}

/* Hero */
.hero {
  padding: 10rem 1.5rem 5rem;
  background: linear-gradient(180deg, #f0f6fc 0%, var(--white) 100%);
  text-align: center;
}

.hero-content {
  max-width: 720px;
  margin: 0 auto;
}

.hero h1 {
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 1.25rem;
  line-height: 1.2;
}

@media (min-width: 640px) { .hero h1 { font-size: 3rem; } }
@media (min-width: 1024px) { .hero h1 { font-size: 3.5rem; } }

.hero p {
  font-size: 1.25rem;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  line-height: 1.6;
}

.hero-buttons {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  justify-content: center;
}

@media (min-width: 480px) { .hero-buttons { flex-direction: row; } }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 2rem;
  font-size: 1.1rem;
  font-weight: 600;
  border-radius: 10px;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.25s ease;
  border: none;
  white-space: nowrap;
}

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

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background: var(--white);
  color: var(--primary);
  border: 2px solid var(--primary);
}

.btn-secondary:hover {
  background: var(--primary);
  color: var(--white);
  transform: translateY(-2px);
}

.btn-block {
  width: 100%;
  max-width: 100%;
}

@media (max-width: 480px) {
  .btn-block {
    width: auto;
    min-width: 200px;
  }
}

/* Stats */
.stats-bar {
  background: var(--primary-dark);
  padding: 2.5rem 1.5rem;
}

.stats-grid {
  max-width: 1000px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  text-align: center;
}

@media (min-width: 640px) {
  .stats-grid { grid-template-columns: repeat(4, 1fr); gap: 2rem; }
}

.stat-item p { margin: 0; }

.stat-number {
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--white);
  display: block;
}

@media (min-width: 640px) { .stat-number { font-size: 2.5rem; } }

.stat-label {
  font-size: 1rem;
  color: rgba(255,255,255,0.85);
  margin-top: 0.25rem;
}

/* Sections */
.section {
  padding: 5rem 1.5rem;
}

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

.section-title {
  text-align: center;
  margin-bottom: 3.5rem;
}

.section-title h2 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 0.75rem;
}

@media (min-width: 768px) { .section-title h2 { font-size: 2.25rem; } }

.section-title p {
  color: var(--text-muted);
  font-size: 1.15rem;
}

/* Cards */
.card-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 640px) { .card-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .card-grid { grid-template-columns: repeat(3, 1fr); } }

.card {
  background: var(--white);
  border-radius: 14px;
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
  transition: all 0.3s ease;
}

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

.card-icon {
  width: 56px;
  height: 56px;
  background: var(--primary-light);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  font-size: 1.75rem;
}

.card h3 {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--primary-dark);
  margin-bottom: 0.75rem;
}

.card p {
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.7;
  margin: 0;
}

/* Steps */
.steps-container {
  max-width: 1000px;
  margin: 0 auto;
}

.steps-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}

@media (min-width: 768px) {
  .steps-grid { grid-template-columns: repeat(3, 1fr); gap: 2rem; }
}

.step {
  text-align: center;
}

.step-number {
  width: 64px;
  height: 64px;
  background: var(--primary);
  color: var(--white);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
}

.step h3 {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--primary-dark);
  margin-bottom: 0.75rem;
}

.step p {
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.6;
}

/* Pricing */
.pricing-grid {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 768px) { .pricing-grid { grid-template-columns: repeat(3, 1fr); } }

.pricing-card {
  background: var(--white);
  border-radius: 14px;
  padding: 2.5rem 2rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
  text-align: center;
}

.pricing-card.featured {
  border: 2px solid var(--primary);
  position: relative;
  box-shadow: var(--shadow-md);
}

.pricing-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary);
  color: var(--white);
  padding: 0.5rem 1.25rem;
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: 25px;
}

.pricing-card h3 {
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--primary-dark);
  margin-bottom: 0.5rem;
}

.pricing-price {
  font-size: 3rem;
  font-weight: 700;
  color: var(--primary);
}

.pricing-price span {
  font-size: 1.15rem;
  font-weight: 400;
  color: var(--text-muted);
}

.pricing-features {
  list-style: none;
  padding: 0;
  margin: 1.75rem 0;
  text-align: left;
}

.pricing-features li {
  padding: 0.75rem 0;
  color: var(--text-muted);
  font-size: 1.05rem;
  padding-left: 1.75rem;
  position: relative;
}

.pricing-features li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--success);
  font-weight: 600;
  font-size: 1rem;
}

/* Contact */
.contact-section {
  background: var(--primary-dark);
  padding: 5rem 1.5rem;
}

.contact-container {
  max-width: 1000px;
  margin: 0 auto;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
}

@media (min-width: 768px) { .contact-grid { grid-template-columns: repeat(2, 1fr); } }

.contact-content h2 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 1rem;
}

@media (min-width: 768px) { .contact-content h2 { font-size: 2.25rem; } }

.contact-content p {
  color: rgba(255,255,255,0.85);
  font-size: 1.15rem;
  line-height: 1.7;
  margin-bottom: 1.25rem;
}

.contact-form {
  background: var(--white);
  border-radius: 14px;
  padding: 2.5rem;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 0.5rem;
  font-size: 1.05rem;
}

.form-group input {
  width: 100%;
  padding: 1rem 1.25rem;
  border: 1px solid #d1d5db;
  border-radius: 10px;
  font-size: 1.1rem;
  transition: all 0.2s;
}

.form-group input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(0,94,162,0.15);
}

/* Footer */
.footer {
  background: #1b1b1b;
  padding: 4rem 1.5rem 2rem;
}

.footer-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}

@media (min-width: 640px) { .footer-grid { grid-template-columns: 2fr 1fr 1fr 1fr; } }

.footer-brand p {
  color: var(--text-muted);
  font-size: 1rem;
  margin-top: 0.75rem;
  line-height: 1.6;
}

.footer h4 {
  color: var(--white);
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.footer ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer li {
  margin-bottom: 0.75rem;
}

.footer a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 1rem;
  transition: color 0.2s;
}

.footer a:hover { color: var(--white); }

.footer-bottom {
  border-top: 1px solid #2d2d2d;
  margin-top: 2.5rem;
  padding-top: 2rem;
  text-align: center;
}

.footer-bottom p {
  color: #525252;
  font-size: 0.95rem;
}

/* Utility */
.text-center { text-align: center; }