/* BOS Layout-System – Version 1.0 · Sprint 2 */

/* Reset */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { height: 100%; font-size: 14px; -webkit-text-size-adjust: 100%; }

body {
  height: 100%;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  color: var(--color-text-primary);
  background: var(--color-bg-page);
  line-height: var(--leading-normal);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Barrierefreiheit – Fokusring */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* Bildschirm-System */
.screen { display: none; }
.screen.active { display: block; }
.hidden { display: none !important; }

/* --- Anmeldung --- */
.auth-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-page);
  padding: var(--space-6);
}

.auth-card {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-12) var(--space-8);
  width: 100%;
  max-width: 400px;
  box-shadow: var(--shadow-lg);
}

.auth-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  justify-content: center;
  margin-bottom: var(--space-8);
}

.auth-logo-text {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  color: var(--color-text-primary);
}

.auth-heading {
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  color: var(--color-text-primary);
  text-align: center;
  margin-bottom: var(--space-1);
}

.auth-subheading {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  text-align: center;
  margin-bottom: var(--space-8);
}

.auth-footer {
  text-align: center;
  margin-top: var(--space-6);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}
.auth-notice {
  text-align: center;
  margin-top: var(--space-4);
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
}

/* --- App-Rahmen --- */
.app-shell {
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

.app-body {
  display: flex;
  flex: 1;
  overflow: hidden;
}

.main-content {
  flex: 1;
  overflow-y: auto;
  background: var(--color-bg-page);
  padding: var(--space-8);
}

/* --- Seitenstruktur --- */
.page-header {
  margin-bottom: var(--space-8);
}

.page-header-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-6);
  margin-bottom: var(--space-1);
}

.page-title {
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  color: var(--color-text-primary);
  line-height: var(--leading-tight);
}

.page-description {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  margin-top: var(--space-1);
}

.page-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

/* --- Raster --- */
.grid      { display: grid; gap: var(--space-6); }
.grid-4    { grid-template-columns: repeat(4, 1fr); }
.grid-3    { grid-template-columns: repeat(3, 1fr); }
.grid-2    { grid-template-columns: repeat(2, 1fr); }
.grid-auto { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }

/* --- Hilfsklassen --- */
.flex           { display: flex; }
.flex-col       { flex-direction: column; }
.items-center   { align-items: center; }
.items-start    { align-items: flex-start; }
.justify-between{ justify-content: space-between; }
.justify-end    { justify-content: flex-end; }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.mt-4  { margin-top: var(--space-4); }
.mt-6  { margin-top: var(--space-6); }
.mt-8  { margin-top: var(--space-8); }
.mb-4  { margin-bottom: var(--space-4); }
.mb-6  { margin-bottom: var(--space-6); }
.mb-8  { margin-bottom: var(--space-8); }
.min-w-0 { min-width: 0; }

.text-xs        { font-size: var(--text-xs); }
.text-sm        { font-size: var(--text-sm); }
.text-md        { font-size: var(--text-md); }
.text-secondary { color: var(--color-text-secondary); }
.text-tertiary  { color: var(--color-text-tertiary); }
.text-success   { color: var(--color-success); }
.text-error     { color: var(--color-error); }
.font-medium    { font-weight: var(--font-medium); }
.font-semibold  { font-weight: var(--font-semibold); }
.font-bold      { font-weight: var(--font-bold); }
.truncate       { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); border: 0;
}

/* Abschnitt */
.section { margin-bottom: var(--space-8); }
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
}
.section-title {
  font-size: var(--text-md);
  font-weight: var(--font-semibold);
  color: var(--color-text-primary);
}

/* Trennlinie */
.divider { height: 1px; background: var(--color-border); margin: var(--space-6) 0; }

/* --- Ansprechbares Design --- */
@media (max-width: 1279px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .main-content { padding: var(--space-6); }
}

@media (max-width: 1023px) {
  .main-content { padding: var(--space-6); }
}

@media (max-width: 767px) {
  .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .main-content { padding: var(--space-4); }
  .page-header-row { flex-direction: column; }
  .page-actions { width: 100%; }
  .auth-card { padding: var(--space-8) var(--space-6); }
}