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

:root {
  --bg: #0f1117;
  --surface: #1a1d27;
  --border: #2a2d3a;
  --text: #e1e4ed;
  --text-dim: #8b8fa3;
  --accent: #6366f1;
  --accent-hover: #818cf8;
  --danger: #ef4444;
  --radius: 8px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-wrapper {
  width: 100%;
  max-width: 400px;
  padding: 20px;
}

.login-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 40px 32px;
  text-align: center;
}

.login-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
}

.login-logo {
  height: 44px;
  width: auto;
}

.login-app-name {
  font-size: 0.7rem;
  color: var(--text-dim);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.login-subtitle {
  color: var(--text-dim);
  font-size: 0.875rem;
  margin-bottom: 32px;
}

.input-group {
  margin-bottom: 16px;
}

.input-group input {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 1rem;
  font-family: 'SF Mono', 'Cascadia Code', 'Consolas', monospace;
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.input-group input::placeholder {
  color: var(--text-dim);
  opacity: 0.5;
  text-transform: none;
  letter-spacing: normal;
}

.input-group input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.login-btn {
  width: 100%;
  padding: 12px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
}

.login-btn:hover {
  background: var(--accent-hover);
}

.login-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.login-error {
  margin-top: 16px;
  font-size: 0.85rem;
  color: var(--danger);
  min-height: 20px;
}