:root {
  --drk-bg: #18191a;
  --drk-surface: #ffffff;
  --drk-surface-soft: #f6f7f8;
  --drk-border: #d1d5db;
  --drk-text: #1f2937;
  --drk-text-soft: #6b7280;
  --drk-primary: #429ed7;
  --drk-primary-hover: #2884bd;
  --drk-accent: #e30613;
  --drk-shadow: 0 12px 30px rgba(0, 0, 0, 0.12);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--drk-text);
  background:
    linear-gradient(rgba(24, 25, 26, 0.48), rgba(24, 25, 26, 0.48)),
    url("https://auth.drk-bochum.de/files/media/public/bd7cac35-9505-423d-935a-fc1df1d00341.png") center center / cover fixed no-repeat;
}

.page {
  min-height: 100vh;
  display: grid;
  place-items: start center;
  padding: 3rem 1rem;
}

.panel {
  width: min(960px, 100%);
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid rgba(209, 213, 219, 0.9);
  border-radius: 8px;
  box-shadow: var(--drk-shadow);
  overflow: hidden;
}

.panel__header {
  padding: 1.25rem 1.5rem;
  background: linear-gradient(180deg, #ffffff, #f9fafb);
  border-bottom: 1px solid var(--drk-border);
}

.panel__title {
  margin: 0;
  font-size: 1.25rem;
}

.panel__body {
  padding: 1.5rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
}

.card {
  border: 1px solid var(--drk-border);
  border-radius: 8px;
  background: var(--drk-surface);
  padding: 1rem;
}

.muted { color: var(--drk-text-soft); }

input, select, button, textarea {
  font: inherit;
}

input, select {
  width: 100%;
  border: 1px solid var(--drk-border);
  border-radius: 6px;
  padding: 0.7rem 0.85rem;
}

button {
  border: 0;
  border-radius: 6px;
  padding: 0.75rem 1rem;
  background: var(--drk-primary);
  color: #fff;
  cursor: pointer;
}

button:hover { background: var(--drk-primary-hover); }

.button-secondary {
  background: #ffffff;
  color: var(--drk-text);
  border: 1px solid var(--drk-border);
}

.button-secondary:hover { background: var(--drk-surface-soft); }

.button-danger {
  background: var(--drk-accent);
}

.button-danger:hover {
  filter: brightness(0.95);
}

.stack {
  display: grid;
  gap: 0.75rem;
}

.row {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  flex-wrap: wrap;
}

.table {
  width: 100%;
  border-collapse: collapse;
}

.table th, .table td {
  padding: 0.7rem;
  border-bottom: 1px solid var(--drk-border);
  text-align: left;
}

.flash {
  margin: 0 0 1rem 0;
  padding: 0.8rem 1rem;
  border-radius: 6px;
  background: #eef8ff;
  border: 1px solid #a8dcf6;
}

.error {
  background: #fff1f1;
  border-color: #ffc7c7;
}