:root {
  --bg-deep: #08080d;
  --bg-elevated: #0e0e16;
  --surface: rgba(255, 255, 255, 0.035);
  --surface-hover: rgba(255, 255, 255, 0.06);
  --border: rgba(255, 255, 255, 0.09);
  --border-strong: rgba(255, 255, 255, 0.16);

  --text: #f5f5f7;
  --text-secondary: #9aa1ae;
  --text-tertiary: #62677a;

  --violet: #8b5cf6;
  --violet-light: #a78bfa;
  --cyan: #22d3ee;
  --accent-gradient: linear-gradient(135deg, var(--violet), var(--cyan));

  --success: #22c55e;
  --danger: #ef4444;
  --warning: #f59e0b;

  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', Monaco, Consolas, monospace;

  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  color-scheme: dark;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: var(--font-sans);
  background: var(--bg-deep);
  color: var(--text);
  line-height: 1.5;
  padding: 40px 24px 56px;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Ambient background glow */
.bg-glow {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.22;
}

.orb-violet {
  width: 480px;
  height: 480px;
  top: -160px;
  left: -120px;
  background: var(--violet);
}

.orb-cyan {
  width: 420px;
  height: 420px;
  bottom: -180px;
  right: -140px;
  background: var(--cyan);
}

@media (prefers-reduced-motion: no-preference) {
  .orb {
    animation: drift 22s var(--ease) infinite alternate;
  }
  .orb-cyan { animation-delay: -8s; }
}

@keyframes drift {
  from { transform: translate(0, 0) scale(1); }
  to { transform: translate(40px, 30px) scale(1.08); }
}

.container {
  max-width: 640px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

/* Header / brand */
.app-header {
  margin-bottom: 28px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: var(--surface);
  border: 1px solid var(--border);
}

.brand-mark svg {
  width: 26px;
  height: 26px;
}

.brand-text h1 {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.subtitle {
  color: var(--text-secondary);
  font-size: 13.5px;
  margin-top: 2px;
}

/* Cards */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.04) inset, 0 20px 40px -24px rgba(0, 0, 0, 0.6);
  padding: 22px;
  margin-bottom: 18px;
}

.card-section + .card-section {
  margin-top: 4px;
}

.section-label {
  display: block;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 14px;
}

.divider {
  height: 1px;
  background: var(--border);
  margin: 18px 0;
}

.form-row { margin-bottom: 14px; }
.form-row:last-child { margin-bottom: 0; }

.form-row label {
  display: block;
  font-size: 12.5px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.input-group {
  display: flex;
  gap: 8px;
}

/* Inputs */
input[type="text"],
input[type="number"] {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  font-family: inherit;
  transition: border-color 0.18s var(--ease), background 0.18s var(--ease), box-shadow 0.18s var(--ease);
}

input[type="text"]::placeholder,
input[type="number"]::placeholder {
  color: var(--text-tertiary);
}

input[type="text"]:read-only {
  color: var(--text-secondary);
  cursor: default;
}

input[type="text"]:focus,
input[type="number"]:focus {
  outline: none;
  border-color: var(--violet-light);
  background: rgba(255, 255, 255, 0.045);
  box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.18);
}

/* Select */
.select-wrap {
  position: relative;
}

.select-wrap::after {
  content: '';
  position: absolute;
  right: 12px;
  top: 50%;
  width: 8px;
  height: 8px;
  border-right: 1.5px solid var(--text-secondary);
  border-bottom: 1.5px solid var(--text-secondary);
  transform: translateY(-70%) rotate(45deg);
  pointer-events: none;
}

select {
  width: 100%;
  appearance: none;
  -webkit-appearance: none;
  padding: 10px 34px 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  font-family: inherit;
  cursor: pointer;
  transition: border-color 0.18s var(--ease), box-shadow 0.18s var(--ease);
}

select:focus {
  outline: none;
  border-color: var(--violet-light);
  box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.18);
}

select option {
  background: var(--bg-elevated);
  color: var(--text);
}

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.nested-row {
  margin-left: 2px;
  padding-left: 14px;
  border-left: 2px solid var(--border);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  font-weight: 500;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.15s var(--ease), border-color 0.15s var(--ease), transform 0.15s var(--ease), box-shadow 0.15s var(--ease);
  white-space: nowrap;
}

.btn .icon {
  width: 15px;
  height: 15px;
  flex-shrink: 0;
}

.btn-ghost {
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  color: var(--text-secondary);
}

.btn-ghost:hover {
  background: var(--surface-hover);
  border-color: var(--border-strong);
  color: var(--text);
}

.btn-small {
  padding: 6px 11px;
  font-size: 12px;
}

.btn-primary {
  width: 100%;
  padding: 13px;
  margin-top: 20px;
  background: var(--accent-gradient);
  color: #ffffff;
  font-size: 14.5px;
  font-weight: 600;
  box-shadow: 0 8px 24px -8px rgba(139, 92, 246, 0.55);
}

.btn-primary:hover {
  box-shadow: 0 10px 28px -6px rgba(139, 92, 246, 0.7);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-primary:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

button:focus-visible,
input:focus-visible,
select:focus-visible {
  outline: 2px solid var(--violet-light);
  outline-offset: 2px;
}

/* Toggle switches */
.toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 9px 0;
  cursor: pointer;
}

.toggle-text {
  font-size: 13.5px;
  color: var(--text);
}

.toggle {
  position: relative;
  flex-shrink: 0;
  width: 40px;
  height: 24px;
}

.toggle input {
  position: absolute;
  opacity: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  cursor: pointer;
  z-index: 1;
}

.toggle-track {
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border);
  border-radius: 999px;
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease);
}

.toggle-thumb {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #cfd2da;
  transition: transform 0.22s var(--ease), background 0.22s var(--ease);
}

.toggle input:checked ~ .toggle-track {
  background: var(--accent-gradient);
  border-color: transparent;
}

.toggle input:checked ~ .toggle-track .toggle-thumb {
  transform: translateX(16px);
  background: #ffffff;
}

.toggle input:focus-visible ~ .toggle-track {
  outline: 2px solid var(--violet-light);
  outline-offset: 2px;
}

/* Progress */
.progress-area {
  margin-top: 16px;
}

.progress-bar {
  height: 6px;
  background: rgba(255, 255, 255, 0.07);
  border-radius: 999px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  width: 0%;
  background: var(--accent-gradient);
  border-radius: 999px;
  transition: width 0.3s var(--ease);
}

.progress-text {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 9px;
  text-align: center;
}

/* Log card */
.log-card {
  padding: 0;
  overflow: hidden;
}

.log-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
}

.log-title {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary);
}

.log-title .icon {
  width: 15px;
  height: 15px;
}

.log-header h2 {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--text);
}

pre#logOutput {
  padding: 16px 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  max-height: 320px;
  overflow-y: auto;
  white-space: pre-wrap;
  word-break: break-word;
  color: #c7cbd6;
  background: rgba(0, 0, 0, 0.25);
}

pre#logOutput:empty::before {
  content: 'Noch keine Ausgabe…';
  color: var(--text-tertiary);
  font-style: normal;
}

pre#logOutput::-webkit-scrollbar {
  width: 8px;
}

pre#logOutput::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.12);
  border-radius: 999px;
}

pre#logOutput::-webkit-scrollbar-track {
  background: transparent;
}

/* Footer */
.app-footer {
  text-align: center;
  margin-top: 24px;
}

.app-footer p {
  font-size: 12px;
  color: var(--text-tertiary);
}

/* Responsive */
@media (max-width: 480px) {
  body { padding: 24px 16px 40px; }
  .two-col { grid-template-columns: 1fr; }
  .card { padding: 18px; }
}