/* ========================================================
   Birkenrode - Modernes Dunkles Schlichtes Design-System
   Design Tokens, Komponenten & UI-Basics
   ======================================================== */

:root {
  /* Farbpalette - Tiefes, edles Dunkelgrau/Anthrazit (Vercel/Linear Style) */
  --bg-canvas: #0a0d13;
  --bg-canvas-subtle: #0e121a;
  --bg-surface: #131722;
  --bg-surface-elevated: #181d2b;
  --bg-surface-hover: #1e2436;
  --bg-input: #0d1017;
  --bg-input-focus: #11151f;

  /* Ränder & Konturen */
  --border-subtle: rgba(255, 255, 255, 0.07);
  --border-medium: rgba(255, 255, 255, 0.12);
  --border-focus: #3b82f6;
  --border-focus-ring: rgba(59, 130, 246, 0.25);

  /* Typografie & Texte */
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-dim: #475569;

  /* Akzentfarben (Dezent & Schlicht) */
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --primary-subtle: rgba(59, 130, 246, 0.12);
  --primary-border: rgba(59, 130, 246, 0.3);

  --success: #10b981;
  --success-subtle: rgba(16, 185, 129, 0.12);
  --success-border: rgba(16, 185, 129, 0.25);

  --warning: #f59e0b;
  --warning-subtle: rgba(245, 158, 11, 0.12);
  --warning-border: rgba(245, 158, 11, 0.25);

  --danger: #ef4444;
  --danger-hover: #dc2626;
  --danger-subtle: rgba(239, 68, 68, 0.12);
  --danger-border: rgba(239, 68, 68, 0.25);

  --purple: #8b5cf6;
  --purple-subtle: rgba(139, 92, 246, 0.12);

  /* Radien & Schatten */
  --radius-xs: 4px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 16px -2px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 12px 32px -4px rgba(0, 0, 0, 0.65);
  --shadow-modal: 0 24px 60px -12px rgba(0, 0, 0, 0.85);

  --transition-fast: 0.15s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ========================================================
   Dunkle Karten- & Panel-Klassen
   ======================================================== */
.glass-panel {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

.glass-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast);
}

.glass-card:hover {
  background: var(--bg-surface-elevated);
  border-color: var(--border-medium);
  box-shadow: var(--shadow-md);
}

/* ========================================================
   Formularfelder & Inputs
   ======================================================== */
.glass-input {
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  border-radius: var(--radius-sm);
  padding: 9px 12px;
  font-size: 0.9rem;
  font-family: inherit;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
  outline: none;
  width: 100%;
  box-sizing: border-box;
}

.glass-input::placeholder {
  color: var(--text-muted);
}

.glass-input:hover {
  border-color: var(--border-medium);
}

.glass-input:focus {
  background: var(--bg-input-focus);
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--border-focus-ring);
}

select.glass-input {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
}

textarea.glass-input {
  resize: vertical;
  min-height: 80px;
  line-height: 1.5;
}

/* ========================================================
   Buttons
   ======================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 8px 14px;
  font-size: 0.88rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  border: 1px solid transparent;
  line-height: 1.25;
  user-select: none;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: #2563eb;
  color: #ffffff;
  border-color: #3b82f6;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.4);
}

.btn-primary:hover {
  background: #1d4ed8;
  border-color: #60a5fa;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.35);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-primary);
  border-color: var(--border-subtle);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--border-medium);
  color: #ffffff;
}

.btn-danger {
  background: rgba(239, 68, 68, 0.15);
  color: #fca5a5;
  border-color: var(--danger-border);
}

.btn-danger:hover {
  background: var(--danger);
  color: #ffffff;
  border-color: var(--danger-hover);
  box-shadow: 0 2px 8px rgba(239, 68, 68, 0.35);
}

.btn-success {
  background: rgba(16, 185, 129, 0.15);
  color: #6ee7b7;
  border-color: var(--success-border);
}

.btn-success:hover {
  background: var(--success);
  color: #ffffff;
}

.btn-sm {
  padding: 5px 10px;
  font-size: 0.8rem;
  border-radius: var(--radius-xs);
}

/* ========================================================
   Badges & Pills
   ======================================================== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  font-size: 0.74rem;
  font-weight: 500;
  border-radius: var(--radius-full);
  letter-spacing: 0.01em;
  line-height: 1.4;
  border: 1px solid transparent;
}

/* ========================================================
   Modalfenster
   ======================================================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(5, 7, 11, 0.82);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-fast), visibility var(--transition-fast);
  padding: 20px;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 580px;
  max-height: 88vh;
  overflow-y: auto;
  box-shadow: var(--shadow-modal);
  transform: scale(0.96) translateY(8px);
  transition: transform var(--transition-fast);
}

.modal-overlay.active .modal-content {
  transform: scale(1) translateY(0);
}

.modal-header {
  padding: 18px 22px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-header h3 {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.modal-close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.35rem;
  cursor: pointer;
  line-height: 1;
  padding: 4px 8px;
  border-radius: var(--radius-xs);
  transition: color var(--transition-fast), background var(--transition-fast);
}

.modal-close:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.06);
}

.modal-body {
  padding: 22px;
}

.modal-footer {
  padding: 14px 22px;
  border-top: 1px solid var(--border-subtle);
  background: rgba(0, 0, 0, 0.15);
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  border-bottom-left-radius: var(--radius-lg);
  border-bottom-right-radius: var(--radius-lg);
}

/* ========================================================
   Schlichte Scrollbars (Dark Minimal)
   ======================================================== */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.22);
}