:root {
  --brand: #ff0036;
  --brand-dark: #cc0028;
  --bg: #f8f9fa;
  --text: #212529;
  --muted: #6c757d;
  --border: #dee2e6;
  --radius: 10px;
  --shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}
.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 24px;
}
header h1 {
  margin: 0 0 4px;
}
.muted {
  color: var(--muted);
  font-size: 14px;
}
.steps {
  display: flex;
  gap: 8px;
  margin: 20px 0;
  flex-wrap: wrap;
}
.step {
  flex: 1 1 120px;
  padding: 10px;
  text-align: center;
  background: #e9ecef;
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 500;
}
.step.done {
  background: #d1e7dd;
  color: #0f5132;
}
.step.active {
  background: var(--brand);
  color: #fff;
}
.input {
  width: 100%;
  padding: 11px 13px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 15px;
  margin: 6px 0 12px;
  font-family: inherit;
}
.input:focus {
  outline: 2px solid var(--brand);
  border-color: transparent;
}
textarea.input {
  resize: vertical;
  font-family: ui-monospace, monospace;
  font-size: 13px;
}
.input[disabled] {
  background: #f1f3f5;
  color: var(--muted);
}
label {
  font-weight: 600;
  font-size: 14px;
  display: block;
  margin-top: 8px;
}
.btn {
  padding: 11px 18px;
  border: 0;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  font-family: inherit;
  transition: transform 0.1s, box-shadow 0.1s, opacity 0.1s;
}
.btn:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: var(--shadow);
}
.btn:disabled {
  opacity: 0.6;
  cursor: wait;
}
.btn-primary {
  background: var(--brand);
  color: #fff;
}
.btn-primary:hover:not(:disabled) {
  background: var(--brand-dark);
}
.btn-secondary {
  background: #e9ecef;
  color: var(--text);
}
.actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 16px;
}
.alert {
  padding: 12px 16px;
  border-radius: var(--radius);
  margin: 12px 0;
  font-size: 14px;
}
.alert-danger {
  background: #f8d7da;
  color: #842029;
}
.alert-success {
  background: #d1e7dd;
  color: #0f5132;
}
.alert-info {
  background: #cff4fc;
  color: #055160;
}
.info {
  font-size: 15px;
  margin: 8px 0;
}
.metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 10px;
  margin: 16px 0;
}
.metric {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
  display: flex;
  flex-direction: column;
}
.metric-label {
  font-size: 12px;
  color: var(--muted);
  text-transform: uppercase;
}
.metric strong {
  font-size: 18px;
  margin-top: 4px;
}
.panel {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 16px;
  margin: 10px 0;
}
.panel summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 15px;
  padding: 4px 0;
}
.panel[open] summary {
  margin-bottom: 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}
.json {
  background: #f8f9fa;
  padding: 12px;
  border-radius: var(--radius);
  overflow-x: auto;
  font-size: 12px;
  margin: 0;
}
.qr-card {
  text-align: center;
  padding: 20px;
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  max-width: 380px;
  margin: 0 auto;
}
.qr-card h3 {
  margin: 0 0 6px;
}
.qr-img-wrap {
  background: #fff;
  padding: 15px;
  border-radius: 8px;
  display: inline-block;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
  margin: 12px 0;
}
.qr-code {
  font-family: ui-monospace, monospace;
  font-weight: bold;
  font-size: 16px;
  margin: 8px 0 0;
}
.log-line {
  font-size: 12px;
  padding: 4px 0;
  border-bottom: 1px solid #f1f3f5;
}
.log-line code {
  background: #f1f3f5;
  padding: 1px 4px;
  border-radius: 3px;
}
.oturumlar-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.oturumlar-list li {
  padding: 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin: 6px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121212;
    --text: #e9ecef;
    --muted: #adb5bd;
    --border: #333;
  }
  .input {
    background: #1e1e1e;
    color: var(--text);
  }
  .metric,
  .panel,
  .qr-card,
  .json {
    background: #1e1e1e;
  }
  .step {
    background: #2b2b2b;
  }
  .btn-secondary {
    background: #2b2b2b;
    color: var(--text);
  }
  .log-line code {
    background: #2b2b2b;
  }
}
/* ══════════ STEP CARDS (monolithic) ══════════ */
.step-card{
  background:var(--surface); border-radius:var(--radius-lg);
  border:1px solid var(--border); box-shadow:var(--shadow-sm);
  margin-bottom:20px; overflow:hidden;
  transition:opacity .4s var(--ease), transform .3s var(--ease),
             border-color .3s var(--ease), box-shadow .3s var(--ease);
}
.step-card.locked{opacity:.4; pointer-events:none; filter:grayscale(.5)}
.step-card.active{border-color:var(--brand); box-shadow:0 0 0 4px var(--brand-soft), var(--shadow-md)}
.step-card.done{border-color:var(--success)}
.step-card.unlocking{animation:unlock-in .5s var(--ease) both}
@keyframes unlock-in{from{opacity:.4; transform:translateY(12px)} to{opacity:1; transform:none}}

.step-card-header{
  display:flex; align-items:center; gap:12px; padding:16px 20px;
  border-bottom:1px solid var(--border); background:var(--surface-2);
  transition:background .3s, color .3s;
}
.step-card.active .step-card-header{background:var(--brand); color:#fff; border-bottom-color:transparent}
.step-card.done .step-card-header{background:var(--success-bg); color:var(--success-text)}
.step-card-header .num{
  width:34px; height:34px; border-radius:50%; background:var(--surface);
  color:var(--text); display:grid; place-items:center; font-weight:700;
  font-size:14px; flex-shrink:0; transition:all .3s;
}
.step-card.active .step-card-header .num{background:rgba(255,255,255,.22); color:#fff}
.step-card.done .step-card-header .num{background:var(--success); color:#fff}
.step-card-header h3{margin:0; font-size:15px; font-weight:700; flex:1; letter-spacing:-.01em}
.step-card-header .status{font-size:12px; opacity:.85; font-weight:500}
.step-card-body{padding:20px}

.reset-link{
  display:inline-flex; align-items:center; gap:6px; font-size:13px;
  color:var(--text-2); padding:8px 12px; border-radius:var(--radius-sm);
  background:var(--surface); border:1px solid var(--border);
}
.reset-link:hover{color:var(--danger); border-color:var(--danger)}
.btn-danger{background:var(--danger); color:#fff}
.btn-danger:hover:not(:disabled){background:#dc2626}