:root {
  --bg-primary: #0b0f19;
  --bg-card: rgba(18, 24, 38, 0.85);
  --bg-card-border: rgba(255, 255, 255, 0.08);
  --accent: #3b82f6;
  --accent-glow: rgba(59, 130, 246, 0.35);
  --accent-hover: #2563eb;
  --success: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;
  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --input-bg: #111827;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

body {
  background-color: var(--bg-primary);
  background-image: 
    radial-gradient(at 0% 0%, rgba(59, 130, 246, 0.12) 0px, transparent 50%),
    radial-gradient(at 100% 100%, rgba(139, 92, 246, 0.12) 0px, transparent 50%);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 2.5rem 1.25rem;
  width: 100%;
}

.header {
  text-align: center;
  margin-bottom: 2.5rem;
}

.logo-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(59, 130, 246, 0.15);
  border: 1px solid rgba(59, 130, 246, 0.3);
  padding: 0.35rem 1rem;
  border-radius: 9999px;
  color: #60a5fa;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.title {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  background: linear-gradient(135deg, #ffffff 0%, #cbd5e1 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 0.75rem;
}

.subtitle {
  color: var(--text-muted);
  font-size: 1rem;
  max-width: 540px;
  margin: 0 auto;
  line-height: 1.6;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--bg-card-border);
  backdrop-filter: blur(16px);
  border-radius: 1.25rem;
  padding: 2rem;
  box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.6);
  margin-bottom: 2rem;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.stat-box {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  padding: 1.25rem;
  border-radius: 1rem;
  display: flex;
  flex-direction: column;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.stat-value {
  font-size: 1.75rem;
  font-weight: 700;
  color: #ffffff;
}

.progress-container {
  margin-top: 1rem;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 9999px;
  height: 8px;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  border-radius: 9999px;
  transition: width 0.3s ease;
  background: linear-gradient(90deg, #3b82f6, #60a5fa);
}

.progress-bar.limit-reached {
  background: var(--danger);
}

.badge {
  display: inline-block;
  padding: 0.25rem 0.65rem;
  border-radius: 0.375rem;
  font-size: 0.75rem;
  font-weight: 600;
}

.badge-success { background: rgba(16, 185, 129, 0.15); color: #34d399; border: 1px solid rgba(16, 185, 129, 0.3); }
.badge-danger { background: rgba(239, 68, 68, 0.15); color: #f87171; border: 1px solid rgba(239, 68, 68, 0.3); }
.badge-warning { background: rgba(245, 158, 11, 0.15); color: #fbbf24; border: 1px solid rgba(245, 158, 11, 0.3); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: var(--accent);
  color: #ffffff;
  padding: 0.9rem 1.75rem;
  border-radius: 0.75rem;
  font-size: 1rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
  width: 100%;
  box-shadow: 0 4px 14px var(--accent-glow);
}

.btn:hover:not(:disabled) {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--accent-glow);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  box-shadow: none;
}
.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.14);
}

.btn-danger {
  background: var(--danger);
  box-shadow: 0 4px 14px rgba(239, 68, 68, 0.3);
}
.btn-danger:hover {
  background: #dc2626;
}

.alert {
  padding: 1rem 1.25rem;
  border-radius: 0.75rem;
  margin-bottom: 1.5rem;
  font-size: 0.925rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.alert-danger {
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #fca5a5;
}

.alert-success {
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: #6ee7b7;
}

.key-display {
  background: rgba(0, 0, 0, 0.4);
  border: 2px dashed rgba(59, 130, 246, 0.5);
  border-radius: 1rem;
  padding: 1.5rem;
  text-align: center;
  margin: 1.5rem 0;
}

.key-code {
  font-family: "Courier New", Courier, monospace;
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: #60a5fa;
  word-break: break-all;
  user-select: all;
  margin-bottom: 1rem;
}

.steps {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.step-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.step-num {
  background: rgba(59, 130, 246, 0.2);
  color: #60a5fa;
  border: 1px solid rgba(59, 130, 246, 0.4);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  font-weight: 700;
  flex-shrink: 0;
}

.step-content h4 {
  font-size: 1rem;
  margin-bottom: 0.25rem;
  color: #fff;
}

.step-content p {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.form-input, .form-textarea, .form-select {
  width: 100%;
  padding: 0.8rem 1rem;
  background: var(--input-bg);
  border: 1px solid var(--bg-card-border);
  border-radius: 0.625rem;
  color: #fff;
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.2s;
}

.form-input:focus, .form-textarea:focus, .form-select:focus {
  border-color: var(--accent);
}

.table-responsive {
  overflow-x: auto;
  border-radius: 0.75rem;
  border: 1px solid var(--bg-card-border);
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9rem;
}

th, td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

th {
  background: rgba(255, 255, 255, 0.03);
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
}

tr:hover {
  background: rgba(255, 255, 255, 0.02);
}

.tab-nav {
  display: flex;
  gap: 0.5rem;
  border-bottom: 1px solid var(--bg-card-border);
  margin-bottom: 1.5rem;
  padding-bottom: 0.5rem;
  overflow-x: auto;
}

.tab-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.95rem;
  transition: all 0.2s;
}

.tab-btn.active {
  background: rgba(59, 130, 246, 0.15);
  color: #60a5fa;
}

.footer {
  margin-top: auto;
  text-align: center;
  padding: 1.5rem;
  color: var(--text-muted);
  font-size: 0.85rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}