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

:root {
  /* ── POST-PILOT DARK NAVY THEME ── */

  /* Hintergründe */
  --color-bg:           #0a1628;
  --color-surface:      #0f2040;
  --color-surface-2:    #162952;
  --color-surface-3:    #1e3a6e;

  /* Rahmen */
  --color-border:       rgba(0, 212, 170, 0.15);
  --color-border-soft:  rgba(255,255,255,0.08);

  /* Text */
  --color-text:         #e8f0fe;
  --color-text-muted:   #7ea8c9;
  --color-text-subtle:  #4a7ba7;

  /* Accent: Teal/Mint */
  --color-primary:       #00d4aa;
  --color-primary-hover: #00f0c0;
  --color-primary-light: rgba(0, 212, 170, 0.12);
  --color-primary-glow:  rgba(0, 212, 170, 0.25);

  /* Status */
  --color-success:      #00d4aa;
  --color-warning:      #f59e0b;
  --color-danger:       #f87171;
  --color-danger-deep:  #ef4444;
  --color-info:         #60a5fa;
  --color-neutral:      #7ea8c9;

  /* Formgebung */
  --radius:    16px;
  --radius-sm:  9px;
  --radius-xs:  5px;

  /* Schatten */
  --shadow:     0 2px 12px rgba(0,0,0,.4), 0 1px 4px rgba(0,0,0,.3);
  --shadow-md:  0 8px 32px rgba(0,0,0,.5), 0 2px 12px rgba(0,212,170,.12);
  --shadow-lg:  0 20px 60px rgba(0,0,0,.6), 0 4px 20px rgba(0,212,170,.2);

  /* Übergänge */
  --transition: 0.17s ease;

  /* Gradienten */
  --gradient-nav: linear-gradient(135deg, #0a1f3d 0%, #0d2d52 60%, #0a2244 100%);
  --gradient-card: linear-gradient(145deg, rgba(15,32,64,.9) 0%, rgba(22,41,82,.8) 100%);
}

html { font-size: 16px; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  min-height: 100vh;
  /* subtle grid pattern */
  background-image:
    radial-gradient(ellipse at 20% 50%, rgba(0,212,170,.04) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(0,100,200,.06) 0%, transparent 50%);
}

/* ── Navbar ───────────────────────────────────────────────── */
.navbar {
  background: var(--gradient-nav) !important;
  border-bottom: 1px solid rgba(0,212,170,.2);
  padding: 0 2rem;
  height: 62px;
  display: flex;
  align-items: center;
  gap: 2rem;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 4px 24px rgba(0,0,0,.5), 0 1px 0 rgba(0,212,170,.15);
  backdrop-filter: blur(12px);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: .55rem;
  font-weight: 800;
  font-size: 1.2rem;
  white-space: nowrap;
  text-decoration: none;
  color: #fff !important;
  letter-spacing: -.01em;
}
.nav-icon { font-size: 1.45rem; }
.nav-title {
  color: var(--color-primary) !important;
  text-shadow: 0 0 20px rgba(0,212,170,.4);
  letter-spacing: .02em;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: .2rem;
  flex: 1;
}
.nav-links a {
  display: block;
  padding: .4rem 1rem;
  border-radius: 999px;
  text-decoration: none;
  color: rgba(255,255,255,.70) !important;
  font-size: .89rem;
  font-weight: 500;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
  border: 1px solid transparent;
}
.nav-links a:hover {
  background: rgba(0,212,170,.1);
  color: var(--color-primary) !important;
  border-color: rgba(0,212,170,.25);
}
.nav-links a.active {
  background: rgba(0,212,170,.15);
  color: var(--color-primary) !important;
  border-color: rgba(0,212,170,.4);
  font-weight: 700;
  box-shadow: 0 0 12px rgba(0,212,170,.15);
}

/* Prüfen-Badge in der Nav – inline positioniert (kein overflow, kein Überlapp) */
.nav-badge {
  display: inline-block;
  position: relative;
  top: -5px;            /* visuell hochgezogen (Hochzeichen-Effekt) */
  margin-left: 3px;
  background: #ef4444;
  color: #fff;
  font-size: .57rem;
  font-weight: 900;
  border-radius: 999px;
  padding: .05rem .3rem;
  min-width: 1.15em;
  line-height: 1.55;
  text-align: center;
  white-space: nowrap;
  pointer-events: none;
  border: 1.5px solid #0a1628;
  box-shadow: 0 1px 4px rgba(239,68,68,.55);
  vertical-align: baseline;
}
.nav-badge:empty { display: none; }

.nav-status {
  display: flex;
  align-items: center;
  gap: .4rem;
  font-size: .8rem;
  color: rgba(255,255,255,.6);
  white-space: nowrap;
}
.status-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: rgba(255,255,255,.3);
}
.status-dot.ok    { background: var(--color-primary); box-shadow: 0 0 8px rgba(0,212,170,.6); }
.status-dot.error { background: var(--color-danger);  box-shadow: 0 0 8px rgba(248,113,113,.6); }

/* ── Main-Content ─────────────────────────────────────────── */
.main-content {
  max-width: 1150px;
  margin: 0 auto;
  padding: 2.5rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
  position: relative;
  z-index: 1;
}

.page-header h1 {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -.025em;
  color: var(--color-text);
  text-shadow: 0 0 40px rgba(0,212,170,.15);
}
.page-subtitle {
  color: var(--color-text-muted);
  margin-top: .3rem;
  font-size: .95rem;
}

/* ── Alerts ───────────────────────────────────────────────── */
#alerts-container {
  display: flex;
  flex-direction: column;
  gap: .75rem;
}
.alert {
  padding: .9rem 1.25rem;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  gap: .75rem;
  font-size: .92rem;
  font-weight: 500;
  backdrop-filter: blur(8px);
}
.alert--danger  {
  background: rgba(239,68,68,.1);
  border: 1px solid rgba(239,68,68,.3);
  border-left: 4px solid var(--color-danger);
  color: #fca5a5;
}
.alert--warning {
  background: rgba(245,158,11,.1);
  border: 1px solid rgba(245,158,11,.25);
  border-left: 4px solid var(--color-warning);
  color: #fcd34d;
}
.alert--info {
  background: rgba(96,165,250,.1);
  border: 1px solid rgba(96,165,250,.2);
  border-left: 4px solid var(--color-info);
  color: #93c5fd;
}

/* ══════════════════════════════════════════════════════════════════
   DASHBOARD-KACHELN
   ══════════════════════════════════════════════════════════════════ */
.tiles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(235px, 1fr));
  gap: 1.3rem;
}

.tile {
  border-radius: var(--radius);
  padding: 1.6rem 1.75rem;
  display: flex;
  align-items: flex-start;
  gap: 1.2rem;
  text-decoration: none;
  color: inherit;
  border: 1px solid var(--color-border-soft);
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  cursor: pointer;
  overflow: hidden;
  position: relative;
  backdrop-filter: blur(8px);
}
.tile:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(0,212,170,.3);
}
.tile:hover .tile-icon { transform: scale(1.15) rotate(-6deg); }

.tile-icon {
  font-size: 2.4rem;
  line-height: 1;
  transition: transform var(--transition);
  flex-shrink: 0;
}
.tile-content { display: flex; flex-direction: column; gap: .2rem; }
.tile-label {
  font-size: .72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .07em;
  opacity: .72;
}
.tile-value { font-size: 2.6rem; font-weight: 800; line-height: 1; }
.tile-sub   { font-size: .82rem; opacity: .72; margin-top: .2rem; }

/* ── Farbige Kacheln ─────────────────────────────────────── */
.tile--warning {
  background: linear-gradient(145deg, rgba(245,158,11,.08) 0%, rgba(245,158,11,.15) 100%);
  border-top: 3px solid var(--color-warning);
  color: #fcd34d;
}
.tile--success {
  background: linear-gradient(145deg, rgba(0,212,170,.06) 0%, rgba(0,212,170,.12) 100%);
  border-top: 3px solid var(--color-success);
  color: var(--color-primary);
}
.tile--info {
  background: linear-gradient(145deg, rgba(96,165,250,.06) 0%, rgba(96,165,250,.12) 100%);
  border-top: 3px solid var(--color-info);
  color: #93c5fd;
}
.tile--neutral {
  background: linear-gradient(145deg, rgba(126,168,201,.06) 0%, rgba(126,168,201,.1) 100%);
  border-top: 3px solid var(--color-neutral);
  color: #7ea8c9;
}
.tile--danger {
  background: linear-gradient(145deg, rgba(239,68,68,.08) 0%, rgba(239,68,68,.15) 100%);
  border-top: 3px solid var(--color-danger);
  color: #fca5a5;
}

/* ── Sektionen ────────────────────────────────────────────── */
.section { display: flex; flex-direction: column; gap: 1rem; }
.section-title { font-size: 1.2rem; font-weight: 700; color: var(--color-text); }
.section-desc  { font-size: .88rem; color: var(--color-text-muted); }

.item-list { display: flex; flex-direction: column; gap: .5rem; }
.item-list-empty { color: var(--color-text-muted); font-size: .9rem; font-style: italic; padding: .5rem 0; }

/* ── Systeminformationen ──────────────────────────────────── */
.system-info {
  background: var(--color-surface);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius);
  padding: 1rem 1.5rem;
  font-size: .85rem;
  box-shadow: var(--shadow);
}
.system-info summary {
  cursor: pointer;
  color: var(--color-text-muted);
  font-weight: 600;
  user-select: none;
  padding: .15rem 0;
}
.system-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: .6rem;
  margin-top: .85rem;
}
.sys-item { display: flex; flex-direction: column; gap: .1rem; }
.sys-label { font-size: .72rem; text-transform: uppercase; letter-spacing: .05em; color: var(--color-text-muted); }
.sys-item span:last-child { font-family: monospace; font-size: .8rem; word-break: break-all; color: var(--color-text-muted); }

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 700px) {
  .navbar       { padding: 0 1rem; gap: .75rem; height: 56px; }
  .nav-links    { gap: 0; }
  .nav-links a  { padding: .3rem .55rem; font-size: .8rem; }
  .main-content { padding: 1.5rem 1rem; gap: 1.75rem; }
  .tiles-grid   { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .tiles-grid { grid-template-columns: 1fr; }
}