/* Reset and base styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: #333;
  background-color: #f8f9fa;
}

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

/* Header */
header {
  background: #fff;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
}

.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  color: #2c3e50;
  font-weight: bold;
  font-size: 1.5rem;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: 10px;
  color: white;
  font-size: 1.2rem;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-menu a {
  text-decoration: none;
  color: #333;
  font-weight: 500;
  transition: color 0.3s ease;
}

.nav-menu a:hover,
.nav-menu a.active {
  color: #667eea;
}

/* Dropdown Menu */
.dropdown {
  position: relative;
}

.dropdown-arrow {
  font-size: 0.8rem;
  margin-left: 5px;
  transition: transform 0.3s ease;
}

.dropdown:hover .dropdown-arrow {
  transform: rotate(180deg);
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  background: white;
  min-width: 250px;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
  border-radius: 8px;
  padding: 0.5rem 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.3s ease;
  z-index: 1000;
  border: 1px solid #e1e5e9;
  display: block;
}

.dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-menu li {
  list-style: none;
}

.dropdown-menu a {
  display: block;
  padding: 10px 20px;
  color: #333;
  text-decoration: none;
  font-size: 0.9rem;
  transition: all 0.3s ease;
  border-radius: 0;
}

.dropdown-menu a:hover {
  background: #f8f9fa;
  color: #667eea;
  padding-left: 25px;
}

.dropdown-divider {
  height: 1px;
  background: #e1e5e9;
  margin: 0.5rem 0;
}

.view-all {
  font-weight: 600 !important;
  color: #667eea !important;
  border-top: 1px solid #e1e5e9;
  margin-top: 0.5rem;
  padding-top: 15px !important;
}

.view-all:hover {
  background: #667eea !important;
  color: white !important;
}

/* Mobile dropdown adjustments */
@media (max-width: 768px) {
  .dropdown-menu {
    position: static;
    opacity: 0;
    visibility: hidden;
    transform: none;
    box-shadow: none;
    border: none;
    background: #f8f9fa;
    margin-top: 0.5rem;
    border-radius: 5px;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease;
  }

  .dropdown.mobile-open .dropdown-menu {
    opacity: 1;
    visibility: visible;
    max-height: 500px;
  }

  .dropdown-menu a {
    padding: 8px 15px;
    font-size: 0.85rem;
  }

  .dropdown-menu a:hover {
    padding-left: 20px;
  }

  .dropdown-arrow {
    display: inline-block;
  }

  .dropdown.mobile-open .dropdown-arrow {
    transform: rotate(180deg);
  }
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 4rem 0;
  text-align: center;
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
  font-weight: 700;
}

.hero p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  opacity: 0.9;
}

.cta-button {
  display: inline-block;
  background: rgba(255, 255, 255, 0.2);
  color: white;
  padding: 12px 30px;
  text-decoration: none;
  border-radius: 25px;
  font-weight: 600;
  transition: all 0.3s ease;
  border: 2px solid rgba(255, 255, 255, 0.3);
}

.cta-button:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: translateY(-2px);
}

/* Content Sections */
.content-section {
  padding: 4rem 0;
}

.content-section:nth-child(even) {
  background: white;
}

.section-title {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 3rem;
  color: #2c3e50;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.feature-card {
  background: white;
  padding: 2rem;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  text-align: center;
  transition: transform 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-5px);
}

.feature-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
  color: white;
  font-size: 1.5rem;
}

.feature-card h3 {
  font-size: 1.3rem;
  margin-bottom: 1rem;
  color: #2c3e50;
}

.feature-card p {
  color: #666;
  line-height: 1.6;
}

/* Tools Grid */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.tool-card {
  background: white;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease;
}

.tool-card:hover {
  transform: translateY(-5px);
}

.tool-image {
  width: 100%;
  height: 200px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 3rem;
}

.tool-content {
  padding: 1.5rem;
}

.tool-content h3 {
  font-size: 1.3rem;
  margin-bottom: 1rem;
  color: #2c3e50;
}

.tool-content p {
  color: #666;
  margin-bottom: 1.5rem;
}

.tool-link {
  display: inline-block;
  background: #667eea;
  color: white;
  padding: 10px 20px;
  text-decoration: none;
  border-radius: 5px;
  font-weight: 500;
  transition: background 0.3s ease;
}

.tool-link:hover {
  background: #5a67d8;
}

/* Calculator Styles */
.calculator {
  background: white;
  border-radius: 10px;
  padding: 2rem;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  max-width: 500px;
  margin: 2rem auto;
}

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

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: #2c3e50;
}

.form-group input {
  width: 100%;
  padding: 12px;
  border: 2px solid #e1e5e9;
  border-radius: 5px;
  font-size: 1rem;
  transition: border-color 0.3s ease;
}

.form-group input:focus {
  outline: none;
  border-color: #667eea;
}

.btn {
  background: #667eea;
  color: white;
  padding: 12px 30px;
  border: none;
  border-radius: 5px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.3s ease;
  width: 100%;
}

.btn:hover {
  background: #5a67d8;
}

.result {
  margin-top: 2rem;
  padding: 1.5rem;
  background: #f8f9fa;
  border-radius: 5px;
  border-left: 4px solid #667eea;
}

.result h3 {
  color: #2c3e50;
  margin-bottom: 1rem;
}

.result p {
  margin-bottom: 0.5rem;
  font-size: 1.1rem;
}

.result .highlight {
  font-weight: bold;
  color: #667eea;
  font-size: 1.2rem;
}

/* Footer */
footer {
  background: #2c3e50;
  color: white;
  padding: 3rem 0 1rem;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-section h3 {
  margin-bottom: 1rem;
  color: #667eea;
}

.footer-section p,
.footer-section a {
  color: #bbb;
  text-decoration: none;
  line-height: 1.6;
}

.footer-section a:hover {
  color: white;
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid #34495e;
  color: #bbb;
}

/* Responsive Design */
@media (max-width: 768px) {
  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    flex-direction: column;
    padding: 1rem;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  }

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

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

  .hero h1 {
    font-size: 2rem;
  }

  .hero p {
    font-size: 1rem;
  }

  .section-title {
    font-size: 2rem;
  }

  .features-grid,
  .tools-grid {
    grid-template-columns: 1fr;
  }

  .calculator {
    margin: 1rem;
    padding: 1.5rem;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 15px;
  }

  .hero {
    padding: 2rem 0;
  }

  .content-section {
    padding: 2rem 0;
  }

  .calculator {
    padding: 1rem;
  }
}