:root {
  color-scheme: light;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background-color: #f4f5f7;
  color: #1f2933;
  font-family: inherit;
}

.site-header {
  padding: 2rem 1.5rem;
  background-color: #ffffff;
  border-bottom: 1px solid #e0e6ed;
}

.site-header h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.75rem, 2vw + 1rem, 2.5rem);
}

.site-header p {
  margin: 0;
  color: #52606d;
}

main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
  display: grid;
  gap: 2.5rem;
}

.form-section,
.feed-section {
  background-color: #ffffff;
  border-radius: 1rem;
  padding: 2rem;
  box-shadow: 0 12px 30px -20px rgba(15, 23, 42, 0.45);
}

.form-section h2,
.feed-section h2 {
  margin-top: 0;
  font-size: 1.5rem;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.field label {
  font-weight: 600;
}

input[type="text"],
input[type="number"],
textarea,
input[type="file"] {
  border: 1px solid #cbd2d9;
  border-radius: 0.75rem;
  padding: 0.75rem 1rem;
  font-size: 1rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

input[type="file"] {
  padding: 0.5rem 1rem;
}

input:focus-visible,
textarea:focus-visible {
  outline: 3px solid #3d8bfd33;
  border-color: #3d8bfd;
  box-shadow: 0 0 0 4px #3d8bfd1a;
}

textarea {
  resize: vertical;
  min-height: 140px;
}

.field-help {
  margin: 0;
  font-size: 0.9rem;
  color: #8292a0;
}

.photo-preview {
  border: 2px dashed #cbd2d9;
  border-radius: 1rem;
  padding: 1.25rem;
  text-align: center;
  min-height: 160px;
  display: grid;
  place-items: center;
  background-color: #f8f9fb;
  margin-bottom: 1.5rem;
}

.photo-preview .placeholder {
  color: #8292a0;
}

.preview-image {
  max-width: 100%;
  border-radius: 0.75rem;
  box-shadow: 0 10px 25px -20px rgba(15, 23, 42, 0.6);
}

.primary-button {
  background-color: #2563eb;
  color: #ffffff;
  border: none;
  border-radius: 999px;
  padding: 0.85rem 1.75rem;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.2s ease, transform 0.1s ease;
}

.primary-button:hover {
  background-color: #1d4ed8;
}

.primary-button:active {
  transform: translateY(1px);
}

.primary-button:focus-visible {
  outline: 3px solid #93c5fd;
  outline-offset: 3px;
}

.empty-state {
  margin-top: 0.5rem;
  color: #52606d;
  font-style: italic;
}

.listing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.listing-card {
  border: 1px solid #e5e9f2;
  border-radius: 1rem;
  overflow: hidden;
  background-color: #ffffff;
  display: flex;
  flex-direction: column;
  box-shadow: 0 12px 28px -24px rgba(15, 23, 42, 0.5);
}

.listing-photo {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.listing-body {
  padding: 1.25rem 1.5rem 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.listing-title {
  margin: 0;
  font-size: 1.15rem;
}

.listing-price {
  margin: 0;
  font-weight: 700;
  color: #2563eb;
}

.listing-area {
  margin: 0;
  color: #52606d;
  font-size: 0.95rem;
}

.listing-description {
  margin: 0.5rem 0 0;
  color: #384657;
  font-size: 0.95rem;
}

.error {
  color: #c73632;
  font-weight: 600;
}

@media (min-width: 960px) {
  main {
    grid-template-columns: minmax(320px, 360px) 1fr;
    align-items: start;
  }
}