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

body {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  background: #f8f9fa;
  color: #333;
}

/* ===== CONTAINERS ===== */
.container {
  width: 90%;
  max-width: 1200px;
  margin: auto;
}

/* ===== HEADER ===== */
.site-header {
  background: #1a1a1a;
  color: #fff;
  padding: 1rem 0;
}

.site-header .logo a {
  color: #fff;
  text-decoration: none;
  font-size: 1.8rem;
  font-weight: bold;
}

.main-nav ul {
  list-style: none;
  display: flex;
  gap: 20px;
}

.main-nav a {
  color: #fff;
  text-decoration: none;
  padding: 0.3rem 0.6rem;
  transition: background 0.3s;
}

.main-nav a:hover,
.main-nav .active {
  background: #ff6600;
  border-radius: 4px;
}

/* ===== MAIN CONTENT ===== */
.main-content {
  display: flex;
  gap: 2rem;
  margin: 2rem auto;
}

/* Left Section */
.content-area {
  flex: 3;
}

.content-area h2 {
  margin-bottom: 1rem;
  color: #222;
}

.calculator-block {
  background: #fff;
  padding: 1rem;
  margin-bottom: 1.5rem;
  border-radius: 6px;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.calculator-block h3 {
  margin-bottom: 0.5rem;
  color: #ff6600;
}

.tool-placeholder {
  background: #f1f1f1;
  padding: 1rem;
  border: 1px dashed #ccc;
  text-align: center;
  font-style: italic;
}

/* Sidebar */
.sidebar {
  flex: 1;
  background: #fff;
  padding: 1rem;
  border-radius: 6px;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.sidebar h2 {
  margin-bottom: 1rem;
  color: #222;
}

.tips-list {
  list-style: none;
}

.tips-list li {
  margin-bottom: 0.8rem;
}

.tips-list a {
  text-decoration: none;
  color: #0073e6;
}

.tips-list a:hover {
  text-decoration: underline;
}

/* ===== FOOTER ===== */
.site-footer {
  background: #1a1a1a;
  color: #ccc;
  padding: 1rem 0;
  margin-top: 2rem;
}

.site-footer p {
  margin-bottom: 0.5rem;
  text-align: center;
}

.footer-nav ul {
  list-style: none;
  display: flex;
  justify-content: center;
  gap: 15px;
}

.footer-nav a {
  color: #ccc;
  text-decoration: none;
}

.footer-nav a:hover {
  color: #fff;
}