/* 404 Museum – style.css */
:root {
  --bg: #f6f6f9;
  --primary: #2d2d5a;
  --accent: #ff5e5b;
  --card-bg: #fff;
  --card-shadow: 0 2px 12px rgba(44,44,80,0.08);
  --border-radius: 1.2rem;
  --transition: 0.2s cubic-bezier(.4,0,.2,1);
  --gallery-gap: 2.5rem;
}

html { box-sizing: border-box; font-size: 18px; }
*,*:before,*:after { box-sizing: inherit; }
body {
  margin: 0;
  font-family: 'Segoe UI', 'Arial', sans-serif;
  background: var(--bg);
  color: var(--primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
header {
  background: var(--primary);
  color: #fff;
  padding: 2rem 1rem 1rem 1rem;
  text-align: center;
  border-bottom-left-radius: var(--border-radius);
  border-bottom-right-radius: var(--border-radius);
  box-shadow: 0 2px 8px rgba(44,44,80,0.07);
}
header h1 { margin: 0 0 0.5rem 0; font-size: 2.2rem; letter-spacing: 0.02em; }
nav#room-nav {
  margin: 1rem 0 0.5rem 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
}
nav#room-nav button {
  background: #fff;
  color: var(--primary);
  border: none;
  border-radius: 2rem;
  padding: 0.4rem 1.2rem;
  font-size: 1rem;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}
nav#room-nav button.active,
nav#room-nav button:focus {
  background: var(--accent);
  color: #fff;
  outline: none;
}
#search-form {
  margin: 1rem auto 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
  max-width: 600px;
}
#search-input, #category-filter {
  padding: 0.5rem 1rem;
  border-radius: 2rem;
  border: 1px solid #ddd;
  font-size: 1rem;
  outline: none;
  transition: border var(--transition);
}
#search-input:focus, #category-filter:focus {
  border: 1.5px solid var(--accent);
}
main {
  flex: 1;
  width: 100%;
  max-width: 1200px;
  margin: 2rem auto 0 auto;
  padding: 0 1rem;
}
#gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--gallery-gap);
  margin-bottom: 2.5rem;
}
.gallery-card {
  background: var(--card-bg);
  border-radius: var(--border-radius);
  box-shadow: var(--card-shadow);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition), box-shadow var(--transition);
  min-width: 0;
}
.gallery-card:hover, .gallery-card:focus-within {
  transform: translateY(-6px) scale(1.025);
  box-shadow: 0 6px 24px rgba(44,44,80,0.13);
}
.gallery-card img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  background: #eaeaea;
  display: block;
  border-bottom: 1px solid #f0f0f0;
}
.gallery-card .card-content {
  padding: 1.1rem 1.2rem 1.2rem 1.2rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.gallery-card h3 {
  margin: 0 0 0.4rem 0;
  font-size: 1.2rem;
  color: var(--primary);
}
.gallery-card p {
  margin: 0 0 0.7rem 0;
  color: #444;
  font-size: 1rem;
  flex: 1;
}
.gallery-card a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
  margin-top: 0.5rem;
  align-self: flex-start;
  transition: color var(--transition);
}
.gallery-card a:hover, .gallery-card a:focus {
  color: var(--primary);
  text-decoration: underline;
}
#no-results {
  text-align: center;
  color: #888;
  margin: 2rem 0;
}
#submit {
  background: #fff8f8;
  border-radius: var(--border-radius);
  padding: 1.5rem 1.2rem;
  margin-bottom: 2rem;
  box-shadow: 0 1px 6px rgba(255,94,91,0.07);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}
#submit h2 { margin-top: 0; color: var(--accent); }
footer {
  text-align: center;
  color: #888;
  font-size: 1rem;
  padding: 1.5rem 0 1rem 0;
  margin-top: auto;
}
/* ------------------- Responsive Design ------------------- */

/* Large desktops (1200px+) */
@media (max-width: 1200px) {
  main {
    max-width: 1000px;
  }
  #gallery {
    gap: 2rem;
  }
}

/* Tablets and small desktops (992px and below) */
@media (max-width: 992px) {
  main {
    max-width: 800px;
  }
  #gallery {
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
  }
  header h1 {
    font-size: 1.7rem;
  }
}

/* Tablets and large phones (768px and below) */
@media (max-width: 768px) {
  main {
    max-width: 98vw;
    margin-top: 1.2rem;
    padding: 0 0.5rem;
  }
  #gallery {
    grid-template-columns: 1fr;
    gap: 1.2rem;
  }
  header {
    padding: 1.2rem 0.5rem 0.7rem 0.5rem;
  }
  #submit {
    padding: 1rem 0.5rem;
  }
  #search-form {
    flex-direction: column;
    gap: 0.7rem;
    max-width: 98vw;
  }
  #search-input, #category-filter {
    width: 100%;
    min-width: 0;
  }
}

/* Mobile phones (600px and below) */
@media (max-width: 600px) {
  header h1 {
    font-size: 1.2rem;
  }
  nav#room-nav button {
    font-size: 0.95rem;
    padding: 0.35rem 0.9rem;
  }
  .gallery-card .card-content {
    padding: 0.8rem 0.7rem 1rem 0.7rem;
  }
  .gallery-card h3 {
    font-size: 1rem;
  }
  .gallery-card p {
    font-size: 0.95rem;
  }
}

/* Extra small devices (480px and below) */
@media (max-width: 480px) {
  main {
    padding: 0 0.2rem;
  }
  #gallery {
    gap: 0.7rem;
  }
  .gallery-card {
    border-radius: 0.7rem;
  }
  #submit {
    border-radius: 0.7rem;
  }
}

/* Accessibility: focus ring for keyboard users */
:focus-visible {
  outline: 2.5px solid var(--accent);
  outline-offset: 2px;
}
/* End of responsive design */