/* signin.css — GEHS Choral sign-in page (green accent) */
:root {
  --bg: #0a1a0e;
  --panel: rgba(255,255,255,0.04);
  --accent: #2a9a3a;
  --muted: #90b898;
}
html, body {
  height: 100%; margin: 0;
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial;
  background: linear-gradient(180deg, #061009, #0a1a0e);
  color: #eafff0;
}
.signin-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px;
}
.signin-panel {
  background: var(--panel);
  padding: 20px 28px 28px;
  border-radius: 12px;
  width: 100%;
  max-width: 420px;
  box-shadow: 0 8px 30px rgba(0,10,2,0.6);
}
.back-btn {
  display: inline-block;
  margin: 0 0 12px;
  padding: 8px 12px;
  background: transparent;
  color: #c6f0cc;
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 8px;
  cursor: pointer;
  font-weight: 600;
  text-decoration: none;
}
.back-btn:hover { background: rgba(255,255,255,0.02); }
.signin-panel h1 { margin: 0 0 16px; font-size: 20px; color: #fff; }
.field { margin-bottom: 14px; }
.field label { display: block; margin-bottom: 6px; color: var(--muted); font-size: 13px; }
.field input {
  width: 100%; padding: 12px 10px;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.06);
  background: rgba(255,255,255,0.02);
  color: #fff; font-size: 15px;
  box-sizing: border-box;
}
.field input:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(42,154,58,0.18);
  border-color: rgba(42,154,58,0.3);
}
.actions { margin-top: 8px; }
.actions button {
  width: 100%; padding: 12px;
  background: linear-gradient(180deg, var(--accent), #1e7a2c);
  color: #fff; border: 0; border-radius: 8px;
  font-weight: 600; cursor: pointer; font-size: 15px;
}
.actions button:active { transform: translateY(1px); }
.error { color: #ffccd5; font-size: 13px; min-height: 18px; margin-top: 6px; }
.form-message { margin-top: 12px; font-size: 14px; min-height: 20px; }
.form-message.error { color: #ff6b6b; }
.form-message.success { color: #b6ffcc; }
.help { margin-top: 14px; color: var(--muted); font-size: 13px; }
.shake { animation: shake .36s ease; }
@keyframes shake {
  0%   { transform: translateX(0); }
  25%  { transform: translateX(-6px); }
  50%  { transform: translateX(6px); }
  75%  { transform: translateX(-4px); }
  100% { transform: translateX(0); }
}
@media (max-width: 420px) { .signin-panel { padding: 20px; border-radius: 10px; } }