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

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: #f8f5f2;
  color: #333;
  line-height: 1.6;
}

header {
  background: #1a1a1a;
  color: white;
  padding: 0.8rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 100;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.3rem;
  font-weight: bold;
}

.logo-img {
  height: 55px;
  width: auto;
  object-fit: contain;
  background: white;
  border-radius: 8px;
  padding: 4px;
}

nav a, .btn-admin, .btn-logout {
  color: white;
  text-decoration: none;
  margin-left: 1.5rem;
  font-weight: 500;
}

.btn-admin, .btn-logout {
  background: #c9a227;
  padding: 0.4rem 1rem;
  border-radius: 4px;
  border: none;
  cursor: pointer;
  color: white;
}

.btn-admin:hover, .btn-logout:hover {
  background: #b08d1f;
}

.hero {
  background: linear-gradient(rgba(0,0,0,0.55), rgba(0,0,0,0.55)),
              url('https://images.unsplash.com/photo-1521572163474-6864f9cf17ab?w=1200') center/cover;
  color: white;
  text-align: center;
  padding: 5rem 1rem;
}

.hero h1 {
  font-size: 2.8rem;
  margin-bottom: 0.5rem;
}

.productos-container {
  max-width: 1200px;
  margin: 3rem auto;
  padding: 0 1rem;
}

.productos-container h2 {
  text-align: center;
  margin-bottom: 2rem;
  font-size: 2rem;
}

.grid-productos {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.8rem;
}

.card {
  background: white;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
  transition: transform 0.2s;
}

.card:hover {
  transform: translateY(-5px);
}

.card img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.card-body {
  padding: 1.2rem;
}

.card h3 {
  margin-bottom: 0.4rem;
  font-size: 1.2rem;
}

/* categoría */
.categoria {
  display: inline-block;
  background: #eee;
  padding: 0.2rem 0.6rem;
  border-radius: 20px;
  font-size: 0.8rem;
  margin-bottom: 0.5rem;
}

.acciones {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.8rem;
}

.acciones button {
  flex: 1;
  padding: 0.4rem;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.9rem;
}

.btn-editar {
  background: #3498db;
  color: white;
}

.btn-eliminar {
  background: #e74c3c;
  color: white;
}

/* Login */
.login-box {
  max-width: 400px;
  margin: 4rem auto;
  background: white;
  padding: 2.5rem;
  border-radius: 12px;
  box-shadow: 0 8px 25px rgba(0,0,0,0.1);
  text-align: center;
}

.login-box input {
  width: 100%;
  padding: 0.8rem;
  margin: 0.6rem 0;
  border: 1px solid #ddd;
  border-radius: 6px;
  font-size: 1rem;
}

.login-box button {
  width: 100%;
  padding: 0.9rem;
  background: #1a1a1a;
  color: white;
  border: none;
  border-radius: 6px;
  font-size: 1rem;
  cursor: pointer;
  margin-top: 0.8rem;
}

.login-box button:hover {
  background: #333;
}

.error {
  color: #e74c3c;
  margin-top: 1rem;
}

/* Formulario de producto */
.form-agregar {
  background: white;
  padding: 1.8rem;
  border-radius: 10px;
  margin-bottom: 2.5rem;
  box-shadow: 0 4px 12px rgba(0,0,0,0.06);
}

.form-agregar input,
.form-agregar textarea,
.form-agregar select {
  width: 100%;
  padding: 0.7rem;
  margin: 0.5rem 0;
  border: 1px solid #ddd;
  border-radius: 6px;
  font-size: 1rem;
}

.form-agregar button {
  padding: 0.7rem 1.5rem;
  margin-right: 0.5rem;
  margin-top: 0.8rem;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  background: #c9a227;
  color: white;
  font-weight: 600;
}

#btn-cancelar {
  background: #777;
}

/* Preview imagen */
.img-preview-wrap {
  display: flex;
  gap: 0.8rem;
  align-items: center;
  margin-bottom: 0.5rem;
}

.img-preview {
  width: 140px;
  height: 100px;
  object-fit: cover;
  border-radius: 8px;
  border: 1px solid #ddd;
  background: #fafafa;
}

.btn-small {
  padding: 0.4rem 0.6rem;
  background: #e74c3c;
  color: white;
  border: none;
  border-radius: 6px;
  cursor: pointer;
}

/* Footer */
footer {
  background: #1a1a1a;
  color: #aaa;
  margin-top: 4rem;
  padding: 2.5rem 1rem;
  text-align: center;
}

.footer-content {
  max-width: 600px;
  margin: 0 auto;
}

.footer-logo {
  height: 80px;
  width: auto;
  margin-bottom: 1rem;
  background: white;
  border-radius: 10px;
  padding: 8px;
}

footer p {
  margin: 0.4rem 0;
}

@media (max-width: 600px) {
  .hero h1 { font-size: 2rem; }
  header { flex-direction: column; gap: 0.8rem; padding: 1rem; }
  .logo-img { height: 45px; }
  .img-preview { width: 110px; height: 80px; }
}