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

body {
  font-family: 'IBM Plex Sans', Arial, sans-serif;
  line-height: 1.6;
  background: #f5f7fa;
  color: #333;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Hero header */
header.hero {
  background: linear-gradient(135deg, #0f62fe 0%, #0043ce 100%);
  color: #fff;
  text-align: center;
  padding: 3rem 1rem;
  position: relative;
  overflow: hidden;
}

header.hero h1 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}

header.hero p {
  font-size: 1.1rem;
  opacity: 0.9;
  margin-bottom: 1.5rem;
}

header.hero input {
  max-width: 400px;
  width: 100%;
  padding: 0.75rem 1rem;
  border-radius: 50px;
  border: none;
  outline: none;
  font-size: 1rem;
  box-shadow: 0 3px 8px rgba(0,0,0,0.2);
}

/* Filter buttons */
nav.filters {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
  padding: 1rem;
  background: #fff;
  border-bottom: 1px solid #e5e5e5;
}

nav.filters button {
  padding: 0.5rem 1rem;
  border: 1px solid #0f62fe;
  border-radius: 6px;
  background: transparent;
  color: #0f62fe;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

nav.filters button:hover {
  background: #0f62fe;
  color: #fff;
}

nav.filters button.active {
  background: #0f62fe;
  color: #fff;
  box-shadow: 0 3px 6px rgba(15, 98, 254, 0.4);
}

/* Cards grid */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.2rem;
  padding: 2rem;
}
.actions {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin: 1rem;
}
.actions button {
  padding: 0.6rem 1rem;
  border: none;
  border-radius: 6px;
  background: #0f62fe;
  color: #fff;
  cursor: pointer;
  transition: background 0.2s;
}
.actions button:hover {
  background: #0043ce;
}
.card {
  background: #fff;
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: 0 3px 6px rgba(0,0,0,0.08);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  animation: fadeIn 0.6s ease forwards;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 16px rgba(0,0,0,0.15);
}

.card h2 {
  font-size: 1.2rem;
  margin-bottom: 0.4rem;
  color: #0f62fe;
}

.card .meta {
  font-size: 0.85rem;
  color: #555;
  margin-bottom: 0.8rem;
}

.card a.visit-btn {
  display: inline-block;
  padding: 0.5rem 0.9rem;
  border-radius: 6px;
  background: #0f62fe;
  color: #fff;
  text-decoration: none;
  font-size: 0.9rem;
  transition: background 0.2s;
}

.card a.visit-btn:hover {
  background: #0043ce;
}

/* Fade-in animation */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(15px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Tips aside */
aside.tips {
  background: #fff;
  margin: 2rem;
  padding: 1.5rem;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

aside.tips h2 {
  margin-bottom: 1rem;
  color: #0f62fe;
}

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

aside.tips li {
  margin: 0.6rem 0;
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: 0.95rem;
}

aside.tips i {
  color: #0f62fe;
  margin-top: 0.2rem;
}

/* Footer */
footer {
  margin-top: auto;
  background: #0f62fe;
  color: #fff;
  text-align: center;
  padding: 1.5rem 1rem;
}

footer .footer-links {
  margin-bottom: 0.6rem;
}

footer .footer-links a {
  color: #fff;
  text-decoration: none;
  margin: 0 0.8rem;
  font-size: 0.95rem;
  transition: color 0.2s;
}

footer .footer-links a:hover {
  color: #e0e0e0;
}

/* Dark mode */
@media (prefers-color-scheme: dark) {
  body { background: #1a1a1a; color: #ddd; }
  header.hero { background: linear-gradient(135deg, #0043ce, #001d6c); }
  nav.filters { background: #111; border-bottom: 1px solid #333; }
  nav.filters button { border: 1px solid #bbb; color: #bbb; }
  nav.filters button.active { background: #0f62fe; color: #fff; }
  .card { background: #222; color: #ddd; }
  .card h2 { color: #4da3ff; }
  aside.tips { background: #222; color: #ddd; }
  footer { background: #000; }
}