* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'Segoe UI', system-ui, sans-serif; background: #0f1117; color: #e8eaed; min-height: 100vh; }
.hidden { display: none !important; }
.screen { min-height: 100vh; }

/* ── Login screen ── */
.login-screen {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 1.5rem;
}
.login-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 20% 10%, rgba(79, 140, 255, 0.18), transparent 55%),
    radial-gradient(ellipse 70% 50% at 85% 80%, rgba(230, 81, 0, 0.12), transparent 50%),
    linear-gradient(160deg, #0a0c12 0%, #0f1117 45%, #12151f 100%);
  pointer-events: none;
}
.login-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: radial-gradient(ellipse 70% 70% at 50% 50%, black 20%, transparent 75%);
}
.login-wrap {
  position: relative;
  width: 100%;
  max-width: 420px;
  z-index: 1;
}
.login-card {
  background: rgba(26, 29, 39, 0.92);
  border: 1px solid rgba(79, 140, 255, 0.2);
  border-radius: 20px;
  padding: 2.25rem 2rem 1.75rem;
  box-shadow:
    0 24px 64px rgba(0, 0, 0, 0.45),
    0 0 0 1px rgba(255, 255, 255, 0.03) inset;
  backdrop-filter: blur(12px);
}
.login-brand {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2rem;
}
.login-logo {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: linear-gradient(135deg, #4f8cff 0%, #3a6fd8 100%);
  color: #fff;
  font-size: 1.6rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(79, 140, 255, 0.35);
  flex-shrink: 0;
}
.login-brand h1 {
  font-size: 1.45rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.2rem;
  line-height: 1.2;
}
.login-subtitle {
  color: #9aa0b4;
  font-size: 0.875rem;
  line-height: 1.4;
}
.login-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.login-field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.login-field span {
  font-size: 0.8rem;
  font-weight: 600;
  color: #b4b9c9;
  letter-spacing: 0.02em;
}
.login-field input {
  width: 100%;
  margin: 0;
  padding: 0.75rem 1rem;
  border-radius: 10px;
  border: 1px solid #3d4266;
  background: #12151f;
  color: #e8eaed;
  font-size: 0.95rem;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.login-field input:focus {
  outline: none;
  border-color: #4f8cff;
  box-shadow: 0 0 0 3px rgba(79, 140, 255, 0.2);
}
.login-field input::placeholder {
  color: #6b7289;
}
.login-error {
  color: #ff6b6b;
  font-size: 0.85rem;
  min-height: 1.1rem;
  margin: 0;
}
.login-error:empty {
  display: none;
}
.login-btn {
  width: 100%;
  margin: 0.25rem 0 0;
  padding: 0.85rem 1rem;
  border-radius: 10px;
  border: none;
  background: linear-gradient(135deg, #4f8cff 0%, #3a7ae8 100%);
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.12s, box-shadow 0.12s, background 0.12s;
  box-shadow: 0 4px 16px rgba(79, 140, 255, 0.35);
}
.login-btn:hover {
  background: linear-gradient(135deg, #5a96ff 0%, #4285ef 100%);
  box-shadow: 0 6px 20px rgba(79, 140, 255, 0.45);
  transform: translateY(-1px);
}
.login-btn:active {
  transform: translateY(0);
}
.login-footer {
  margin-top: 1.5rem;
  text-align: center;
  color: #6b7289;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.card { background: #1a1d27; border-radius: 12px; padding: 1.5rem; margin: 1rem 0; border: 1px solid #2d3148; }
h1, h2, h3, h4, h5 { margin-bottom: 1rem; }
input, select, button { padding: 0.6rem 1rem; border-radius: 8px; border: 1px solid #3d4266; background: #252836; color: #e8eaed; margin: 0.25rem; }
button { background: #4f8cff; border: none; cursor: pointer; font-weight: 600; }
button:hover { background: #3a7ae8; }
button.logout { background: #c44; }
button.nav-active { background: #3a7ae8; outline: 2px solid #4f8cff; }
.error { color: #f66; margin-top: 0.5rem; }
.hint { color: #9aa0b4; font-size: 0.85rem; margin: 0.5rem 0; }
nav { background: #1a1d27; padding: 1rem 2rem; display: flex; align-items: center; gap: 0.5rem; border-bottom: 1px solid #2d3148; flex-wrap: wrap; }
nav h2 { margin: 0; flex: 1; min-width: 150px; }
main { padding: 2rem; max-width: 1400px; margin: 0 auto; }
.toolbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1rem; }
.form-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 0.5rem; margin-bottom: 1rem; }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width: 900px) { .two-col { grid-template-columns: 1fr; } }
.stats-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 1rem; margin-bottom: 1.5rem; }
.stat-card { background: #1a1d27; border: 1px solid #2d3148; border-radius: 12px; padding: 1.25rem; text-align: center; }
.stat-card .value { font-size: 2rem; font-weight: 700; color: #4f8cff; }
.stat-card .label { color: #9aa0b4; font-size: 0.85rem; margin-top: 0.25rem; }
table { width: 100%; border-collapse: collapse; margin-top: 0.5rem; font-size: 0.9rem; }
th, td { padding: 0.6rem 0.75rem; text-align: left; border-bottom: 1px solid #2d3148; }
th { color: #9aa0b4; font-size: 0.8rem; }
.status-active { color: #4caf50; }
.status-inactive { color: #f66; }
.action-activated { color: #4caf50; }
.action-transferred { color: #ff9800; }
.action-deactivated, .action-expired, .action-revoked { color: #f66; }
#codes-output { margin: 1rem 0; font-family: monospace; color: #4f8cff; }
.section-block { border: 1px solid #2d3148; border-radius: 8px; padding: 1rem; margin-bottom: 1rem; }
.section-block h5 { margin-bottom: 0.75rem; color: #9aa0b4; font-size: 0.9rem; text-transform: uppercase; letter-spacing: 0.05em; }
.btn-row { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 0.5rem; }
.btn-success { background: #2e7d32; }
.btn-success:hover { background: #1b5e20; }
.btn-warning { background: #e65100; }
.btn-warning:hover { background: #bf360c; }
.btn-muted { background: #444; }
.btn-muted:hover { background: #555; }
.btn-danger { background: #c62828; }
.btn-danger:hover { background: #b71c1c; }
.status-badge { display: inline-block; padding: 0.4rem 0.8rem; border-radius: 6px; font-weight: 600; font-size: 0.85rem; }
.status-badge.active { background: #1b3a1b; color: #4caf50; }
.status-badge.stopped { background: #3a1b1b; color: #f66; }
.status-badge.expired { background: #3a3a1b; color: #ff9800; }
.action-renewed { color: #4caf50; }
.action-stopped { color: #f66; }
.action-changed { color: #ff9800; }