:root {
  --bg: #0f1117;
  --surface: #1a1d27;
  --border: #2a2d3a;
  --accent: #6c63ff;
  --accent-hover: #5a52e0;
  --text: #e2e8f0;
  --text-muted: #8892a4;
  --success: #48bb78;
  --error: #fc8181;
  --radius: 10px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Header */
header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 1rem 2rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

header .logo {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text);
}

header .logo span { color: var(--accent); }

nav { margin-left: auto; }
nav a { color: var(--text-muted); font-size: 0.9rem; margin-left: 1.5rem; }
nav a:hover { color: var(--text); text-decoration: none; }

/* Main */
main { flex: 1; padding: 2rem; max-width: 1100px; margin: 0 auto; width: 100%; }

/* Footer */
footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  text-align: center;
  padding: 1rem;
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* Suchfeld */
.search-wrap {
  margin-bottom: 2rem;
}

.search-wrap input {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 1rem;
  outline: none;
  transition: border-color 0.2s;
}

.search-wrap input:focus { border-color: var(--accent); }
.search-wrap input::placeholder { color: var(--text-muted); }

/* Projekt-Grid */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}

.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: border-color 0.2s, transform 0.15s;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.project-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.project-card .icon { font-size: 2rem; }

.project-card h2 {
  font-size: 1.1rem;
  font-weight: 600;
}

.project-card p {
  color: var(--text-muted);
  font-size: 0.9rem;
  flex: 1;
}

.project-card .tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.tag {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 0.15rem 0.6rem;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.project-card .btn {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  font-size: 0.9rem;
  text-align: center;
  transition: background 0.2s;
}

.project-card .btn:hover { background: var(--accent-hover); text-decoration: none; }

/* Keine Ergebnisse */
.no-results {
  text-align: center;
  color: var(--text-muted);
  padding: 3rem 0;
  display: none;
}

/* Flash-Meldungen */
.flashes { margin-bottom: 1.5rem; }

.flash {
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
}

.flash.error { background: #3b1a1a; border: 1px solid var(--error); color: var(--error); }
.flash.success { background: #1a3b2a; border: 1px solid var(--success); color: var(--success); }
.flash.info { background: #1a1f3b; border: 1px solid var(--accent); color: var(--accent); }

/* Projekt-Seiten */
.project-header {
  margin-bottom: 2rem;
}

.project-header h1 { font-size: 1.8rem; margin-bottom: 0.5rem; }
.project-header p { color: var(--text-muted); }
.back-link { display: inline-block; margin-bottom: 1.5rem; color: var(--text-muted); font-size: 0.9rem; }
.back-link:hover { color: var(--text); }

/* Upload-Bereich */
.drop-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 3rem 2rem;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
  background: var(--surface);
}

.drop-zone.drag-over {
  border-color: var(--accent);
  background: #1e1a3a;
}

.drop-zone .drop-icon { font-size: 3rem; margin-bottom: 1rem; }
.drop-zone p { color: var(--text-muted); margin-bottom: 0.5rem; }
.drop-zone .hint { font-size: 0.85rem; color: var(--text-muted); }

.upload-btn {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  padding: 0.6rem 1.4rem;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  font-size: 0.95rem;
  margin-top: 1rem;
  transition: background 0.2s;
}

.upload-btn:hover { background: var(--accent-hover); }

/* Error-Seite */
.error-page {
  text-align: center;
  padding: 5rem 2rem;
}

.error-page .code {
  font-size: 6rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}

.error-page h2 { font-size: 1.5rem; margin: 1rem 0 0.5rem; }
.error-page p { color: var(--text-muted); margin-bottom: 2rem; }

@media (max-width: 600px) {
  header { padding: 1rem; }
  main { padding: 1rem; }
  .project-grid { grid-template-columns: 1fr; }
}