/* public/css/style.css */
/* Mobile-first Grundlayout */
html, body {
  margin: 0;
  padding: 0;
  font-family: Arial, sans-serif;
  background: #f9f9f9;
  color: #333;
}
.container, main {
  padding: 1rem;
}
header {
  background: #004080;
  color: #fff;
  padding: 1rem;
}
header h1 {
  margin: 0 0 0.5rem;
  font-size: 1.25rem;
}
nav a {
  color: #fff;
  text-decoration: none;
  margin-right: 0.75rem;
  font-size: 0.9rem;
}
nav a:hover {
  text-decoration: underline;
}
input[type="text"], input[type="date"], select, button, input[type="file"] {
  width: 100%;
  padding: 0.5rem;
  margin: 0.25rem 0 0.75rem;
  border: 1px solid #ccc;
  border-radius: 0.25rem;
  font-size: 1rem;
}
button {
  background: #0066cc;
  color: #fff;
  border: none;
  cursor: pointer;
  border-radius: 0.25rem;
  padding: 0.6rem;
  font-size: 1rem;
}
button:hover {
  background: #005bb5;
}
.error {
  color: #c00;
  margin-top: 0.5rem;
}
/* Raumliste */
#room-list, .upload, table {
  margin-top: 1rem;
}
.room-row {
  background: #fff;
  margin-bottom: 1rem;
  padding: 1rem;
  border-radius: 0.5rem;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}
.room-row h2 {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
}
.room-row img {
  max-width: 100%;
  height: auto;
  display: block;
  margin-bottom: 0.5rem;
  border-radius: 0.25rem;
}
.room-row label {
  display: block;
  margin: 0.5rem 0;
  font-size: 0.95rem;
}
.key-status {
  margin-top: 0.75rem;
}
.key-status span {
  display: block;
  margin-bottom: 0.5rem;
}
/* Tabellen für Tage, Nutzer, Schlüssel */
table {
  width: 100%;
  border-collapse: collapse;
}
table th, table td {
  border: 1px solid #ddd;
  padding: 0.5rem;
  text-align: left;
  font-size: 0.95rem;
}
table th {
  background: #e6e6e6;
}
@media (min-width: 600px) {
  /* Zwei-Spalten-Layour für Raum-Übersicht auf größeren Displays */
  .room-row {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
  }
  .room-row img {
    max-width: 150px;
  }
  .room-row h2 {
    flex: 1;
  }
}
/* Upload-Form */
.upload {
  background: #fff;
  padding: 1rem;
  border-radius: 0.5rem;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}
.upload h2 {
  margin-top: 0;
}
```