:root {
  --fondo: #0f172a;
  --card: #1e293b;
  --texto: #f8fafc;
  --gris: #94a3b8;
  --border: #334155;
  --verde: #34d399;
  --azul: #60a5fa;
  --rosa: #f472b6;
  --error: #f87171;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: 'Inter', system-ui, sans-serif;
  min-height: 100vh;
  background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 50%, #0f172a 100%);
  color: var(--texto);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.login-page { width: 100%; max-width: 440px; position: relative; }
.back-home {
  display: inline-block;
  color: var(--gris);
  text-decoration: none;
  font-size: 0.9rem;
  margin-bottom: 20px;
  transition: color 0.2s;
}
.back-home:hover { color: var(--verde); }
.login-card {
  background: linear-gradient(145deg, rgba(30, 41, 59, 0.95), rgba(15, 23, 42, 0.98));
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 32px 28px;
  box-shadow: 0 25px 80px rgba(0, 0, 0, 0.5);
}
.login-brand { text-align: center; margin-bottom: 24px; }
.login-logo { width: 64px; height: 64px; border-radius: 16px; margin-bottom: 12px; object-fit: contain; }
.login-brand h1 { font-size: 1.5rem; font-weight: 700; margin-bottom: 6px; }
.login-brand p { color: var(--gris); font-size: 0.9rem; }
.lang-row { display: flex; justify-content: center; gap: 6px; margin-bottom: 20px; flex-wrap: wrap; }
.lang-pill {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--gris);
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  cursor: pointer;
}
.lang-pill.active { background: var(--verde); color: #0f172a; border-color: var(--verde); font-weight: 600; }
.auth-tabs { display: flex; gap: 8px; margin-bottom: 20px; border-bottom: 1px solid var(--border); padding-bottom: 12px; }
.auth-tab {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--gris);
  padding: 10px;
  cursor: pointer;
  font-size: 0.95rem;
  border-radius: 8px 8px 0 0;
  transition: color 0.2s, background 0.2s;
}
.auth-tab.active { color: var(--texto); font-weight: 600; border-bottom: 2px solid var(--verde); }
.auth-form { display: flex; flex-direction: column; gap: 10px; }
.auth-form.hidden { display: none; }
.auth-form label { font-size: 0.85rem; color: var(--gris); margin-top: 4px; }
.auth-form .hint { font-weight: 400; opacity: 0.8; }
.auth-form input {
  width: 100%;
  padding: 12px 14px;
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--border);
  border-radius: 12px;
  color: var(--texto);
  font-size: 1rem;
}
.auth-form input:focus { outline: none; border-color: var(--verde); }
.btn-primary {
  margin-top: 8px;
  padding: 14px;
  border: none;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--verde), var(--azul));
  color: #0f172a;
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  transition: transform 0.15s, opacity 0.2s;
}
.btn-primary:hover { transform: translateY(-1px); opacity: 0.95; }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }
.btn-register { background: linear-gradient(135deg, var(--rosa), #8b5cf6); color: white; }
.auth-divider { display: flex; align-items: center; gap: 12px; margin: 20px 0; color: var(--gris); font-size: 0.85rem; }
.auth-divider::before, .auth-divider::after { content: ''; flex: 1; height: 1px; background: var(--border); }
.btn-google {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 12px 16px;
  background: white;
  color: #1f2937;
  border: none;
  border-radius: 12px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: box-shadow 0.2s, transform 0.15s;
}
.btn-google:hover { box-shadow: 0 8px 24px rgba(0,0,0,0.25); transform: translateY(-1px); }
.login-footer { text-align: center; margin-top: 24px; font-size: 0.9rem; }
.login-footer a { color: var(--azul); text-decoration: none; }
.login-footer a:hover { text-decoration: underline; }
#toast-container { position: fixed; top: 16px; right: 16px; z-index: 9999; display: flex; flex-direction: column; gap: 8px; }
.toast {
  padding: 12px 18px;
  border-radius: 12px;
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--texto);
  font-size: 0.9rem;
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
  animation: slideIn 0.3s ease;
}
.toast.error { border-color: var(--error); }
.toast.success { border-color: var(--verde); }
@keyframes slideIn { from { opacity: 0; transform: translateX(20px); } to { opacity: 1; transform: translateX(0); } }