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

:root {
  --bg: #080c10;
  --surface: #0e1318;
  --surface2: #141b22;
  --border: #1e2c38;
  --accent: #00ffee;
  --accent2: #ff3cac;
  --text: #e8f4f8;
  --text-muted: #5a7a8a;
  --error: #ff4466;
  --success: #00ffaa;
  --font-display: 'Syne', sans-serif;
  --font-mono: 'Space Mono', monospace;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-display);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.bg-grid {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,255,238,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,255,238,0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: 0;
}

.noise {
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 0;
  opacity: 0.4;
}

.auth-container {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 420px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  animation: fadeUp 0.6s ease both;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

.brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  text-align: center;
}

.logo-mark {
  animation: pulse 3s ease infinite;
}

@keyframes pulse {
  0%, 100% { filter: drop-shadow(0 0 8px #00ffee88); }
  50% { filter: drop-shadow(0 0 20px #00ffeecc); }
}

.brand-name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 2rem;
  letter-spacing: -1px;
  color: var(--text);
}

.brand-name span { color: var(--accent); }

.brand-tagline {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

.auth-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px;
  box-shadow: 0 0 0 1px rgba(0,255,238,0.05), 0 32px 64px rgba(0,0,0,0.5);
}

.tab-switcher {
  display: flex;
  background: var(--bg);
  border-radius: 8px;
  padding: 4px;
  margin-bottom: 24px;
  gap: 4px;
}

.tab {
  flex: 1;
  padding: 8px;
  background: transparent;
  border: none;
  border-radius: 6px;
  color: var(--text-muted);
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.tab.active {
  background: var(--surface2);
  color: var(--accent);
  box-shadow: 0 0 12px rgba(0,255,238,0.1);
}

.form-panel { display: flex; flex-direction: column; gap: 16px; }
.form-panel.hidden { display: none; }

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.form-group input {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 14px;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0,255,238,0.08);
}

.hint {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
}

.role-toggle {
  display: flex;
  gap: 8px;
}

.role-btn {
  flex: 1;
  padding: 10px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-muted);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.2s;
}

.role-btn.active {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(0,255,238,0.05);
  box-shadow: 0 0 12px rgba(0,255,238,0.1);
}

.btn-primary {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px;
  background: var(--accent);
  color: #000;
  border: none;
  border-radius: 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.2s;
  margin-top: 4px;
}

.btn-primary:hover {
  background: #33ffee;
  box-shadow: 0 0 24px rgba(0,255,238,0.4);
  transform: translateY(-1px);
}

.btn-primary:active { transform: translateY(0); }

.error-msg {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--error);
  min-height: 18px;
  text-align: center;
}

.success-msg {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--success);
  min-height: 18px;
  text-align: center;
}

.footer-note {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  text-align: center;
}