:root {
  --z-bg: #060a12;
  --z-surface: #0c1322;
  --z-surface2: #111a2e;
  --z-border: rgba(148, 163, 184, 0.14);
  --z-text: #f1f5f9;
  --z-muted: #94a3b8;
  --z-accent: #2563eb;
  --z-accent-hover: #3b82f6;
  --z-accent2: #38bdf8;
  --z-green: #10b981;
  --z-amber: #f59e0b;
  --z-red: #ef4444;
  --radius-lg: 14px;
  --radius-md: 10px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: radial-gradient(circle at 50% 0%, #0f2147 0%, var(--z-bg) 62%);
  color: var(--z-text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

.card {
  background: rgba(12, 19, 34, 0.86);
  border: 1px solid var(--z-border);
  border-radius: var(--radius-lg);
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.42), inset 0 1px 0 rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(16px);
}

.eyebrow {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.11em;
  color: var(--z-accent2);
}

.label {
  display: block;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--z-muted);
  margin-bottom: 0.32rem;
}

.input {
  width: 100%;
  background: rgba(17, 26, 46, 0.9);
  border: 1px solid var(--z-border);
  border-radius: var(--radius-md);
  padding: 0.54rem 0.8rem;
  color: var(--z-text);
  font-size: 0.875rem;
  line-height: 1.35;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.input:focus {
  border-color: var(--z-accent2);
  background: rgba(17, 26, 46, 1);
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.14);
}

.code-input {
  font-size: 1.65rem;
  font-weight: 700;
  letter-spacing: 0.34em;
  text-align: center;
  text-transform: uppercase;
  max-width: 14.5rem;
  margin: 0 auto;
  display: block;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  background: linear-gradient(180deg, #3b82f6 0%, #2563eb 100%);
  color: #ffffff;
  border: 1px solid rgba(96, 165, 250, 0.35);
  border-radius: var(--radius-md);
  padding: 0.48rem 0.95rem;
  font-size: 0.84rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.28), inset 0 1px 0 rgba(255, 255, 255, 0.18);
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-primary:hover:not(:disabled) {
  background: linear-gradient(180deg, #60a5fa 0%, #2563eb 100%);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.25);
  transform: translateY(-0.5px);
}

.btn-primary:active:not(:disabled) {
  transform: translateY(0);
}

.btn-primary:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  box-shadow: none;
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  background: rgba(255, 255, 255, 0.04);
  color: #e2e8f0;
  border: 1px solid var(--z-border);
  border-radius: var(--radius-md);
  padding: 0.45rem 0.85rem;
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.btn-ghost:hover:not(:disabled) {
  background: rgba(56, 189, 248, 0.08);
  border-color: rgba(56, 189, 248, 0.32);
  color: #ffffff;
}

.btn-danger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  background: rgba(239, 68, 68, 0.14);
  color: #fca5a5;
  border: 1px solid rgba(239, 68, 68, 0.32);
  border-radius: var(--radius-md);
  padding: 0.45rem 0.85rem;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-danger:hover:not(:disabled) {
  background: rgba(239, 68, 68, 0.24);
  color: #ffffff;
}

.tab-pill {
  padding: 0.42rem 0.8rem;
  border-radius: 8px;
  font-size: 0.8rem;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  background: transparent;
  color: var(--z-muted);
  transition: all 0.15s ease;
}

.tab-pill.active {
  background: linear-gradient(180deg, rgba(59, 130, 246, 0.25) 0%, rgba(37, 99, 235, 0.32) 100%);
  border-color: rgba(56, 189, 248, 0.35);
  color: #ffffff;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
}

.avatar-circle {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: inline-grid;
  place-items: center;
  font-weight: 700;
  font-size: 0.92rem;
  color: #fff;
  flex-shrink: 0;
  user-select: none;
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(3, 6, 14, 0.78);
  backdrop-filter: blur(6px);
  display: grid;
  place-items: center;
  padding: 1rem;
  z-index: 60;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.16rem 0.52rem;
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 600;
}

.badge-green {
  background: rgba(16, 185, 129, 0.14);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.25);
}

.badge-amber {
  background: rgba(245, 158, 11, 0.14);
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.25);
}

.badge-blue {
  background: rgba(56, 189, 248, 0.14);
  color: #38bdf8;
  border: 1px solid rgba(56, 189, 248, 0.25);
}