:root {
  --bg: #0a0a12;
  --panel: #12121e;
  --border: #26263a;
  --neon-cyan: #00f6ff;
  --neon-magenta: #ff00e6;
  --neon-green: #39ff14;
  --text: #d6f6ff;
  --text-dim: #7a8ba8;
  --danger: #ff2d55;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: radial-gradient(circle at top, #10101c, var(--bg) 60%);
  color: var(--text);
  font-family: 'Courier New', ui-monospace, monospace;
  min-height: 100vh;
}

h1, h2 {
  color: var(--neon-cyan);
  text-shadow: 0 0 8px var(--neon-cyan);
  letter-spacing: 0.05em;
}

.topbar {
  position: sticky;
  top: 0;
  background: var(--panel);
  border-bottom: 1px solid var(--neon-magenta);
  box-shadow: 0 0 12px rgba(255, 0, 230, 0.35);
  padding: 0.75rem 1.5rem;
  z-index: 10;
}

.topbar-inner {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.brand {
  font-weight: bold;
  color: var(--neon-magenta);
  text-shadow: 0 0 8px var(--neon-magenta);
  letter-spacing: 0.15em;
}

.login-form {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-left: auto;
}

.session-info {
  margin-left: auto;
  color: var(--neon-green);
}

.topbar-error, .error, .feedback.bad {
  color: var(--danger);
}

.feedback.ok {
  color: var(--neon-green);
}

main {
  padding: 2rem;
  max-width: 960px;
  margin: 0 auto;
}

input, select {
  background: var(--panel);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.4rem 0.6rem;
  border-radius: 4px;
  font-family: inherit;
}

input:focus {
  outline: none;
  border-color: var(--neon-cyan);
  box-shadow: 0 0 6px var(--neon-cyan);
}

button {
  background: transparent;
  border: 1px solid var(--neon-cyan);
  color: var(--neon-cyan);
  padding: 0.4rem 0.9rem;
  border-radius: 4px;
  cursor: pointer;
  font-family: inherit;
  transition: box-shadow 0.15s ease;
}

button:hover {
  box-shadow: 0 0 8px var(--neon-cyan);
}

button.danger {
  border-color: var(--danger);
  color: var(--danger);
}

button.danger:hover {
  box-shadow: 0 0 8px var(--danger);
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
}

th, td {
  border: 1px solid var(--border);
  padding: 0.5rem;
  text-align: left;
}

th {
  color: var(--neon-magenta);
}

form {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.admin-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.admin-tabs button.active {
  box-shadow: 0 0 8px var(--neon-cyan);
  color: var(--neon-cyan);
}

.welcome {
  text-align: center;
  margin-top: 3rem;
}