* {
  box-sizing: border-box;
}

body {
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  margin: 0;
  background: #f6f8f7;
  color: #1f2937;
  line-height: 1.5;
}

/* HEADER */
.topbar {
  background: #ffffff;
  border-bottom: 1px solid #e5e7eb;
  padding: 28px 0;
}

.container {
  max-width: 1000px;
  margin: auto;
  padding: 0 20px;
}

h1 {
  margin: 0;
  font-size: 30px;
}

.subtitle {
  margin: 6px 0 0;
  color: #6b7280;
  font-size: 14px;
}

/* HEADINGS */
h2 {
  margin-top: 30px;
  font-size: 18px;
  color: #111827;
}

/* SEARCH BAR */
.search {
  width: 100%;
  padding: 12px 14px;
  margin: 20px 0 10px;
  border: 1px solid #e5e7eb;
  border-radius: 10px;
  font-size: 14px;
  outline: none;
}

.search:focus {
  border-color: #16a34a;
  box-shadow: 0 0 0 2px rgba(22, 163, 74, 0.15);
}

/* GRID LAYOUT */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
  margin-bottom: 10px;
}

/* CARDS */
.card {
  background: #ffffff;
  border: 1px solid #e5e7eb;
  border-radius: 14px;
  padding: 16px;
  transition: all 0.2s ease;
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 22px rgba(0, 0, 0, 0.08);
  border-color: #d1d5db;
}

/* LINKS */
.card a {
  text-decoration: none;
  color: #16a34a;
  font-weight: 600;
  display: block;
  font-size: 15px;
}

.card a:hover {
  color: #15803d;
}

/* FOOTER */
footer {
  font-size: 13px;
}

/* AD / MONETIZATION BLOCKS */
.ad-box,
.ad {
  background: #f3f4f6;
  padding: 12px;
  margin: 16px 0;
  text-align: center;
  border: 1px dashed #cbd5e1;
  border-radius: 10px;
  color: #6b7280;
  font-size: 13px;
}

/* AFFILIATE BOX */
.affiliate {
  margin-top: 20px;
  padding: 14px;
  background: #ecfdf5;
  border: 1px solid #a7f3d0;
  border-radius: 10px;
  font-size: 14px;
}

.affiliate a {
  color: #047857;
  font-weight: 700;
  text-decoration: none;
}

.affiliate a:hover {
  text-decoration: underline;
}

/* BUTTONS (for calculators) */
button {
  background: #16a34a;
  color: white;
  border: none;
  padding: 10px 14px;
  margin-top: 10px;
  border-radius: 10px;
  cursor: pointer;
  font-weight: 600;
}

button:hover {
  background: #15803d;
}

/* INPUTS */
input {
  width: 100%;
  padding: 10px 12px;
  margin: 6px 0 12px;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  font-size: 14px;
}

input:focus {
  border-color: #16a34a;
  outline: none;
}

/* RESULTS */
#out {
  margin-top: 14px;
  font-size: 16px;
  font-weight: 600;
}