/* ─────────────────────────────────────────────────────────────
   about.css — "Über ATLAS"-Modal + Version-Badge im Header
   Wird ZUSÄTZLICH zu styles.css geladen.
   ─────────────────────────────────────────────────────────────*/

/* Version-Badge im Header (nur Dev/Staging) */
.version-badge {
  display: inline-block;
  margin-left: 8px;
  padding: 1px 8px;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 10px;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  vertical-align: middle;
  opacity: 0.85;
  cursor: help;
}

/* Footer-Link "Über ATLAS" */
.app-footer {
  margin-top: 24px;
  padding: 16px 20px;
  border-top: 1px solid rgba(0, 0, 0, 0.08);
  font-size: 12px;
  color: #6b7785;
  text-align: center;
}
.app-footer a {
  color: #6b7785;
  text-decoration: none;
  margin: 0 6px;
}
.app-footer a:hover {
  color: var(--theme-primary, #0d2840);
  text-decoration: underline;
}
.app-footer .footer-sep {
  opacity: 0.4;
}

/* Modal-Backdrop */
.about-modal-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  z-index: 2000;
  align-items: flex-start;
  justify-content: center;
  padding: 5vh 20px;
  overflow-y: auto;
}
.about-modal-backdrop.visible {
  display: flex;
}

/* Modal */
.about-modal {
  background: white;
  border-radius: 10px;
  max-width: 640px;
  width: 100%;
  box-shadow: 0 12px 48px rgba(0, 0, 0, 0.25);
  position: relative;
  overflow: hidden;
}
.about-close {
  position: absolute;
  top: 12px;
  right: 12px;
  background: rgba(0, 0, 0, 0.08);
  color: #4a5664;
  border: none;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
  z-index: 1;
}
.about-close:hover {
  background: rgba(0, 0, 0, 0.16);
}

.about-header {
  padding: 22px 24px 14px;
  background: linear-gradient(135deg, var(--theme-bg-dark, #0d2840) 0%, var(--theme-primary, #1565a8) 100%);
  color: white;
}
.about-header h2 {
  margin: 0;
  font-size: 20px;
  font-weight: 700;
}
.about-subtitle {
  margin: 4px 0 0;
  font-size: 13px;
  opacity: 0.85;
}

.about-body {
  padding: 20px 24px 24px;
  max-height: 70vh;
  overflow-y: auto;
}

.about-loading,
.about-error {
  text-align: center;
  color: #6b7785;
  padding: 40px 20px;
  font-style: italic;
}
.about-error {
  color: #c44b1c;
}

/* Sections */
.about-section {
  margin-bottom: 22px;
}
.about-section:last-child {
  margin-bottom: 0;
}
.about-section h3 {
  font-size: 12px;
  font-weight: 700;
  color: var(--theme-primary, #0d2840);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin: 0 0 10px;
  padding-bottom: 6px;
  border-bottom: 1px solid #eef0f3;
}

/* Description-List */
.about-dl {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 8px 14px;
  margin: 0;
  font-size: 13px;
}
.about-dl dt {
  color: #6b7785;
  font-weight: 600;
}
.about-dl dd {
  margin: 0;
  color: #1a2332;
}
.about-dl dd code {
  background: #f4f6f8;
  padding: 1px 6px;
  border-radius: 3px;
  font-size: 11px;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}
.about-meta {
  font-size: 11px;
  color: #6b7785;
  margin-top: 2px;
}

/* Environment Badge */
.about-env-badge {
  display: inline-block;
  margin-left: 8px;
  padding: 1px 8px;
  border-radius: 10px;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  vertical-align: middle;
}
.about-env-badge.prod {
  background: #d4edda;
  color: #155724;
}
.about-env-badge.non-prod {
  background: #fff3cd;
  color: #856404;
}

/* OSS-Toggle und Tabelle */
.oss-toggle {
  background: none;
  border: 1px solid #d8dee5;
  color: #4a5664;
  padding: 5px 10px;
  border-radius: 5px;
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
}
.oss-toggle:hover {
  border-color: var(--theme-primary, #0d2840);
  color: var(--theme-primary, #0d2840);
}
.oss-list {
  margin-top: 10px;
  max-height: 260px;
  overflow-y: auto;
  border: 1px solid #eef0f3;
  border-radius: 5px;
}
.oss-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}
.oss-table th {
  background: #f4f6f8;
  text-align: left;
  padding: 7px 10px;
  font-weight: 600;
  color: #4a5664;
  border-bottom: 1px solid #d8dee5;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  position: sticky;
  top: 0;
}
.oss-table td {
  padding: 5px 10px;
  border-bottom: 1px solid #eef0f3;
}
.oss-table tr:last-child td {
  border-bottom: none;
}
.oss-table code {
  background: #f4f6f8;
  padding: 1px 5px;
  border-radius: 3px;
  font-size: 10px;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

/* Mobile */
@media (max-width: 600px) {
  .about-modal {
    max-width: 100%;
  }
  .about-dl {
    grid-template-columns: 1fr;
    gap: 2px 0;
  }
  .about-dl dt {
    margin-top: 6px;
  }
}