:root {
  --primary: #047857; /* Deep Emerald / Forest Green */
  --primary-hover: #065f46;
  --primary-light: #ecfdf5;
  --primary-tint: #d1fae5;
  --secondary: #0284c7; /* Vibrant Oceanic Cyan */
  --secondary-light: #e0f2fe;
  --accent: #f59e0b; /* Warm Amber */
  --text-main: #0f172a; /* Slate 900 */
  --text-muted: #475569; /* Slate 600 */
  --bg-page: #f8fafc;
  --bg-card: #ffffff;
  --border-color: #e2e8f0;
  --border-radius: 14px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 14px rgba(0,0,0,0.07);
  --shadow-lg: 0 10px 30px rgba(0,0,0,0.1);
  --font-family: 'Plus Jakarta Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --transition: all 0.25s ease-in-out;
}

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

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

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

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header & Navigation */
header {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid var(--border-color);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 0;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 20px;
  font-weight: 800;
  color: var(--text-main);
}

.brand-icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}

.nav-menu {
  display: flex;
  gap: 24px;
  list-style: none;
  align-items: center;
}

.nav-link {
  font-weight: 600;
  color: var(--text-muted);
  font-size: 15px;
}

.nav-link:hover, .nav-link.active {
  color: var(--primary);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 10px;
  font-weight: 700;
  font-size: 15px;
  cursor: pointer;
  transition: var(--transition);
  border: none;
}

.btn-primary {
  background-color: var(--primary);
  color: #ffffff !important;
  box-shadow: 0 4px 14px rgba(4, 120, 87, 0.25);
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(4, 120, 87, 0.35);
}

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

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

/* Hero Section */
.hero-section {
  padding: 70px 0 50px;
  background: radial-gradient(circle at top right, var(--primary-light) 0%, transparent 60%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: center;
}

.badge-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 700;
  font-size: 13px;
  padding: 6px 14px;
  border-radius: 30px;
  margin-bottom: 16px;
  border: 1px solid var(--primary-tint);
}

.hero-title {
  font-size: 44px;
  line-height: 1.2;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: 18px;
  color: var(--text-muted);
  margin-bottom: 30px;
  line-height: 1.7;
}

.hero-card-preview {
  background: var(--bg-card);
  border-radius: 20px;
  padding: 30px;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg);
  position: relative;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
}

.stat-item h4 {
  font-size: 26px;
  font-weight: 800;
  color: var(--primary);
}

.stat-item p {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
}

/* Feature Cards & Grid */
.section {
  padding: 60px 0;
}

.section-light {
  background: #ffffff;
}

.section-header {
  text-align: center;
  max-width: 650px;
  margin: 0 auto 40px;
}

.section-title {
  font-size: 32px;
  font-weight: 800;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.section-desc {
  font-size: 16px;
  color: var(--text-muted);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.card {
  background: var(--bg-card);
  border-radius: var(--border-radius);
  padding: 28px;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-tint);
}

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin-bottom: 20px;
}

.card-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
}

.card-text {
  font-size: 15px;
  color: var(--text-muted);
  margin-bottom: 20px;
  flex-grow: 1;
}

/* Interactive Calculator / Habit Planner Widget */
.widget-box {
  background: var(--bg-card);
  border-radius: 18px;
  border: 1px solid var(--border-color);
  padding: 30px;
  box-shadow: var(--shadow-md);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-weight: 700;
  font-size: 14px;
  margin-bottom: 8px;
  color: var(--text-main);
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-family: inherit;
  font-size: 15px;
  background: #ffffff;
  color: var(--text-main);
  transition: var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(4, 120, 87, 0.15);
}

.result-box {
  background: var(--primary-light);
  border: 1px dashed var(--primary);
  border-radius: 12px;
  padding: 20px;
  margin-top: 20px;
  display: none;
}

/* Contact & Info Box */
.info-row {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 20px;
}

.info-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}

/* Legal & Compliance Notice */
.compliance-disclaimer {
  background: #f1f5f9;
  border-left: 4px solid var(--text-muted);
  padding: 14px 20px;
  font-size: 13px;
  color: var(--text-muted);
  border-radius: 0 8px 8px 0;
  margin-top: 30px;
}

/* Cookie Banner */
.cookie-banner {
  position: fixed;
  bottom: 20px;
  left: 20px;
  right: 20px;
  max-width: 580px;
  background: #ffffff;
  border: 1px solid var(--border-color);
  box-shadow: 0 10px 40px rgba(0,0,0,0.15);
  border-radius: 16px;
  padding: 24px;
  z-index: 9999;
  display: none;
}

.cookie-banner.show {
  display: block;
}

.cookie-content h4 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
}

.cookie-content p {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 18px;
  line-height: 1.5;
}

.cookie-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* Footer */
footer {
  background: #0f172a;
  color: #94a3b8;
  padding: 60px 0 30px;
  font-size: 14px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-col h4 {
  color: #ffffff;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 18px;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  color: #94a3b8;
}

.footer-links a:hover {
  color: #ffffff;
}

.footer-bottom {
  border-top: 1px solid #1e293b;
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 13px;
}

/* Responsive */
@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 600px) {
  .nav-menu {
    display: none;
  }
  .stats-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
}