/* ============================================================
   NotesManager – Modernes Grau-Design, barrierefrei (WCAG 2.1 AA)
   ============================================================ */

/* --- Farb-Variablen --- */
:root {
  --nm-bg:           #f0f2f5;
  --nm-surface:      #ffffff;
  --nm-nav-bg:       #1c1f26;
  --nm-nav-hover:    #2a2e38;
  --nm-nav-active:   #353a47;
  --nm-nav-text:     #c8cdd8;
  --nm-nav-text-act: #ffffff;
  --nm-accent:       #4a6fa5;
  --nm-accent-hover: #3a5a8f;
  --nm-accent-light: #eaf0fa;
  --nm-text:         #1a1d23;
  --nm-text-muted:   #5a6070;
  --nm-border:       #d4d8e1;
  --nm-shadow-sm:    0 1px 4px rgba(0,0,0,0.07), 0 2px 8px rgba(0,0,0,0.05);
  --nm-shadow-md:    0 2px 8px rgba(0,0,0,0.09), 0 4px 16px rgba(0,0,0,0.07);
  --nm-radius:       0.5rem;
  --nm-radius-sm:    0.35rem;
  --nm-transition:   0.18s ease;
}

/* --- Basis --- */
*, *::before, *::after { box-sizing: border-box; }

body {
  background: var(--nm-bg);
  color: var(--nm-text);
  font-family: system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 0.9375rem;
  line-height: 1.6;
  min-height: 100vh;
}

/* --- Barrierefreiheit: Fokus-Indikator --- */
:focus-visible {
  outline: 3px solid var(--nm-accent);
  outline-offset: 2px;
  border-radius: var(--nm-radius-sm);
}
a:focus-visible, button:focus-visible, input:focus-visible,
select:focus-visible, textarea:focus-visible {
  outline: 3px solid var(--nm-accent);
  outline-offset: 2px;
}

/* --- Navigation --- */
.navbar {
  background: var(--nm-nav-bg) !important;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  padding: 0.65rem 1.25rem;
  box-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

.navbar-brand {
  color: var(--nm-nav-text-act) !important;
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 0.02em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.navbar-brand::before {
  content: "▪";
  color: var(--nm-accent);
  font-size: 1.3rem;
}

.nav-link {
  color: var(--nm-nav-text) !important;
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.45rem 0.8rem !important;
  border-radius: var(--nm-radius-sm);
  transition: background var(--nm-transition), color var(--nm-transition);
}
.nav-link:hover {
  background: var(--nm-nav-hover);
  color: var(--nm-nav-text-act) !important;
}
.nav-link.active {
  background: var(--nm-nav-active);
  color: var(--nm-nav-text-act) !important;
}

/* Navbar-User-Bereich */
.navbar .nm-user-info {
  font-size: 0.8rem;
  color: var(--nm-nav-text);
  padding: 0.3rem 0.7rem;
  background: rgba(255,255,255,0.06);
  border-radius: var(--nm-radius-sm);
  border: 1px solid rgba(255,255,255,0.1);
}

.btn-outline-light.btn-sm {
  font-size: 0.8rem;
  padding: 0.3rem 0.85rem;
  border-color: rgba(255,255,255,0.3);
  color: #fff;
  transition: background var(--nm-transition), border-color var(--nm-transition);
}
.btn-outline-light.btn-sm:hover {
  background: rgba(255,255,255,0.12);
  border-color: rgba(255,255,255,0.5);
  color: #fff;
}

/* --- Main-Content --- */
main.container {
  max-width: 1200px;
  padding-top: 1.75rem;
  padding-bottom: 4rem;
}

/* --- Seitenüberschriften --- */
h1, h2, h3, h4, h5, h6 {
  color: var(--nm-text);
  font-weight: 600;
  line-height: 1.3;
}

/* --- Cards --- */
.card {
  background: var(--nm-surface);
  border: 1px solid var(--nm-border) !important;
  border-radius: var(--nm-radius) !important;
  box-shadow: var(--nm-shadow-sm);
  transition: box-shadow var(--nm-transition);
}
.card:hover {
  box-shadow: var(--nm-shadow-md);
}
.card-body {
  padding: 1.4rem 1.5rem;
}

/* --- Stat-Cards (Dashboard) --- */
.stat-card {
  border-left: 3px solid var(--nm-accent) !important;
  transition: transform var(--nm-transition), box-shadow var(--nm-transition);
}
.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--nm-shadow-md);
}
.stat-number {
  font-size: 2.1rem;
  font-weight: 700;
  color: var(--nm-accent);
  line-height: 1.1;
}
.stat-label {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--nm-text-muted);
  margin-top: 0.2rem;
}

/* --- Buttons --- */
.btn {
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--nm-radius-sm);
  transition: background var(--nm-transition), border-color var(--nm-transition),
              transform var(--nm-transition), box-shadow var(--nm-transition);
}
.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--nm-accent);
  border-color: var(--nm-accent);
  color: #fff;
}
.btn-primary:hover, .btn-primary:focus {
  background: var(--nm-accent-hover);
  border-color: var(--nm-accent-hover);
  color: #fff;
  box-shadow: 0 2px 8px rgba(74,111,165,0.35);
}

.btn-outline-secondary {
  color: var(--nm-text-muted);
  border-color: var(--nm-border);
}
.btn-outline-secondary:hover {
  background: #eef0f4;
  color: var(--nm-text);
  border-color: #c0c5d0;
}

.btn-outline-primary {
  color: var(--nm-accent);
  border-color: var(--nm-accent);
}
.btn-outline-primary:hover {
  background: var(--nm-accent);
  color: #fff;
}

.btn-danger {
  background: #c0392b;
  border-color: #a93226;
}
.btn-danger:hover { background: #a93226; border-color: #922b21; }

.btn-sm {
  font-size: 0.8rem;
  padding: 0.28rem 0.7rem;
}

/* --- Formularelemente --- */
.form-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--nm-text);
  margin-bottom: 0.35rem;
}
.form-control, .form-select {
  border: 1px solid var(--nm-border);
  border-radius: var(--nm-radius-sm);
  color: var(--nm-text);
  background: #fff;
  font-size: 0.9rem;
  transition: border-color var(--nm-transition), box-shadow var(--nm-transition);
  padding: 0.5rem 0.75rem;
}
.form-control:focus, .form-select:focus {
  border-color: var(--nm-accent);
  box-shadow: 0 0 0 3px rgba(74,111,165,0.18);
  outline: none;
}
textarea.form-control { min-height: 9rem; resize: vertical; }

/* --- Tabellen --- */
.table {
  color: var(--nm-text);
  border-color: var(--nm-border);
  font-size: 0.875rem;
}
.table > thead > tr > th {
  background: #f4f6f9;
  color: var(--nm-text-muted);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  border-bottom: 2px solid var(--nm-border);
  padding: 0.75rem 1rem;
}
.table > tbody > tr > td {
  padding: 0.75rem 1rem;
  vertical-align: middle;
  border-bottom: 1px solid #eef0f4;
}
.table-hover > tbody > tr:hover > td {
  background: #f7f9fc;
}

/* --- Badges --- */
.badge {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 0.28em 0.65em;
  border-radius: 0.25rem;
}
.text-bg-secondary {
  background: #e4e7ed !important;
  color: var(--nm-text) !important;
}
.text-bg-success  { background: #d4edda !important; color: #1a5c35 !important; }
.text-bg-danger   { background: #f8d7da !important; color: #7a1c1c !important; }
.text-bg-warning  { background: #fff3cd !important; color: #664d03 !important; }
.text-bg-info     { background: #d1ecf1 !important; color: #0c4a55 !important; }
.text-bg-primary  { background: var(--nm-accent-light) !important; color: var(--nm-accent) !important; }

/* --- List-Group --- */
.list-group-item {
  border-color: var(--nm-border);
  color: var(--nm-text);
  font-size: 0.875rem;
  padding: 0.8rem 1rem;
  transition: background var(--nm-transition);
}
.list-group-item-action:hover,
.list-group-item-action:focus {
  background: #f4f6fa;
  color: var(--nm-text);
}
.list-group-flush .list-group-item { border-left: 0; border-right: 0; }

/* --- Alerts --- */
.alert {
  border-radius: var(--nm-radius-sm);
  font-size: 0.875rem;
  border-width: 1px;
}
.alert-success  { background:#d4edda; color:#1a5c35; border-color:#b8dfc7; }
.alert-danger   { background:#f8d7da; color:#7a1c1c; border-color:#f1b0b5; }
.alert-warning  { background:#fff3cd; color:#664d03; border-color:#ffe69c; }
.alert-info     { background:#d1ecf1; color:#0c4a55; border-color:#a8d8e1; }

/* --- Login-Seite --- */
.login-wrapper {
  min-height: calc(100vh - 5rem);
  display: flex;
  align-items: center;
  justify-content: center;
}
.login-card {
  width: 100%;
  max-width: 400px;
}
.login-logo {
  width: 2.5rem;
  height: 2.5rem;
  background: var(--nm-accent);
  border-radius: var(--nm-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: #fff;
  font-weight: 800;
  margin: 0 auto 1rem;
}

/* --- Text-Hilfklassen --- */
.text-muted { color: var(--nm-text-muted) !important; }

/* --- Seitenüberschrift-Bereich --- */
.page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}
.page-header h1 {
  margin-bottom: 0.15rem;
  font-size: 1.5rem;
}

/* --- Content pre (Dokumentation) --- */
.content-pre {
  white-space: pre-wrap;
  word-break: break-word;
  font-family: inherit;
  margin: 0;
  color: var(--nm-text);
  line-height: 1.7;
}

/* --- Trennlinie --- */
hr { border-color: var(--nm-border); opacity: 1; }

/* --- Scrollbar (Webkit) --- */
::-webkit-scrollbar { width: 7px; height: 7px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #c5c9d4; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #a8adb9; }