/* Login Screen */
.login-screen {
  display: none;
  position: fixed; inset: 0; z-index: 1000;
  background: var(--daylight);
  justify-content: center; align-items: center;
  flex-direction: column;
}
.login-screen.active { display: flex; }

.login-card {
  width: 100%; max-width: 400px; padding: 48px 32px;
  background: var(--pure);
  border-radius: var(--radius-xl);
  box-shadow: var(--sh-lg);
  text-align: center;
  position: relative; z-index: 1;
}
.login-logo {
  font-family: var(--font-display);
  font-size: 36px; font-weight: 700;
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}
.login-subtitle {
  font-size: 15px; color: var(--n400);
  margin-bottom: 36px;
}

.login-divider {
  display: flex; align-items: center; gap: 12px;
  margin: 24px 0; color: var(--n400); font-size: 13px;
}
.login-divider::before, .login-divider::after {
  content: ''; flex: 1; height: 1px; background: var(--n100);
}

.login-btn-google {
  display: flex; align-items: center; justify-content: center; gap: 10px;
  width: 100%; padding: 14px;
  background: var(--pure);
  border: 1.5px solid var(--n200);
  border-radius: var(--radius-md);
  font-family: var(--font); font-size: 15px; font-weight: 600;
  color: var(--n700);
  cursor: pointer; transition: all 0.2s;
}
.login-btn-google:hover {
  border-color: var(--n300);
  box-shadow: var(--sh-sm);
}
.login-btn-google svg { flex-shrink: 0; }

.login-email-form { display: flex; flex-direction: column; gap: 12px; }
.login-email-input {
  width: 100%; padding: 14px 16px;
  border: 1.5px solid var(--n200);
  border-radius: var(--radius-md);
  font-family: var(--font); font-size: 15px;
  color: var(--night); outline: none;
  transition: border-color 0.2s;
}
.login-email-input:focus { border-color: var(--sunrise); }
.login-email-input::placeholder { color: var(--n300); }

.login-btn-send {
  width: 100%; padding: 14px;
  background: var(--sunrise-gradient);
  border: none; border-radius: var(--radius-md);
  font-family: var(--font); font-size: 15px; font-weight: 600;
  color: var(--pure);
  cursor: pointer; transition: opacity 0.2s;
}
.login-btn-send:hover { opacity: 0.9; }
.login-btn-send:disabled { opacity: 0.5; cursor: not-allowed; }

.login-message {
  margin-top: 16px; padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 14px; display: none;
}
.login-message.success {
  display: block; background: #f0fdf4; color: #166534; border: 1px solid #bbf7d0;
}
.login-message.error {
  display: block; background: #fef2f2; color: #991b1b; border: 1px solid #fecaca;
}

.login-footer {
  margin-top: 24px; font-size: 13px; color: var(--n400);
}
.login-footer a {
  color: var(--sunrise); text-decoration: none; font-weight: 500;
}
.login-footer a:hover { text-decoration: underline; }

@media (max-width: 600px) {
  .login-card { margin: 16px; padding: 36px 24px; }
}